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DTSTART;TZID=Europe/Madrid:20161010T150000
DTEND;TZID=Europe/Madrid:20161010T160000
DTSTAMP:20260405T204912
CREATED:20160928T191705Z
LAST-MODIFIED:20160928T191705Z
UID:95918-1476111600-1476115200@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Publishing in the Nature journals
DESCRIPTION:IBEC Seminar: Publishing in the Nature journals\nDr. Alexia-Ileana Zaromytidou (Chief Editor\, Nature Cell Biology)\nAlexia-Ileana Zaromytidou\, Chief Editor of Nature Cell Biology will provide an editor’s perspective on the editorial and publishing process in the Nature journals.\nShe received her PhD from the London Research Institute of Cancer Research UK in London\, UK (now the Francis Crick Institute) in January 2007. Her doctoral work with Richard Treisman centered on the molecular interactions between actin-regulated transcription factors and their coactivators in the context of MAPK and Rho signaling responses. She pursued her postdoctoral research in the lab of Joan Massagué at Memorial Sloan-Kettering Cancer Center in New York\, where she studied how different phosphorylation inputs affect TGFβ/BMP pathway activity to achieve distinct biological outcomes. In September 2010 she joined the editorial team of Nature Cell Biology as the editor responsible for the areas of cancer biology\, mechanobiology\, cell adhesion\, migration and the cytoskeleton\, and became Chief editor of the journal in November 2015.
URL:https://ibecbarcelona.eu/event/24759-2/
LOCATION:Sala Félix Serratossa\, Parc Científic de Barcelona\, Barcelona\, Spain
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161010T150000
DTEND;TZID=Europe/Madrid:20161010T160000
DTSTAMP:20260405T204912
CREATED:20160928T191705Z
LAST-MODIFIED:20160930T122011Z
UID:24759-1476111600-1476115200@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Publishing in the Nature journals
DESCRIPTION:IBEC Seminar: Publishing in the Nature journals\nDr. Alexia-Ileana Zaromytidou (Chief Editor\, Nature Cell Biology)\nAlexia-Ileana Zaromytidou\, Chief Editor of Nature Cell Biology will provide an editor’s perspective on the editorial and publishing process in the Nature journals.\nShe received her PhD from the London Research Institute of Cancer Research UK in London\, UK (now the Francis Crick Institute) in January 2007. Her doctoral work with Richard Treisman centered on the molecular interactions between actin-regulated transcription factors and their coactivators in the context of MAPK and Rho signaling responses. She pursued her postdoctoral research in the lab of Joan Massagué at Memorial Sloan-Kettering Cancer Center in New York\, where she studied how different phosphorylation inputs affect TGFβ/BMP pathway activity to achieve distinct biological outcomes. In September 2010 she joined the editorial team of Nature Cell Biology as the editor responsible for the areas of cancer biology\, mechanobiology\, cell adhesion\, migration and the cytoskeleton\, and became Chief editor of the journal in November 2015.
URL:https://ibecbarcelona.eu/event/24759/
LOCATION:Sala Félix Serratossa\, Parc Científic de Barcelona\, Barcelona\, Spain
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161013T100000
DTEND;TZID=Europe/Madrid:20161013T110000
DTSTAMP:20260405T204912
CREATED:20161007T133132Z
LAST-MODIFIED:20161007T133132Z
UID:95921-1476352800-1476356400@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Scaling up in Systems Biology: from a minimal cell to microbiomes
DESCRIPTION:Scaling up in Systems Biology: from a minimal cell to microbiomes\nMaria Lluch Senar\, Design of Biological Systems grup\, Centre for Genomic Regulation (CRG)\nUltra-sequencing technologies have allowed the massive identification of human-associated microbiomes. Genome annotations of microbiomes consider conserved ORFs or those encoding for proteins larger than 100aa. However\, growing evidence highlight the existence of a hidden universe of small genes (smORFs) encoding for small peptides (SEPs; <100aa)\, many of them secreted\, being involved in infection and quorum sensing. Also\, in eukaryotes\, small antimicrobial peptides (AMPs) are secreted in response to infection. The interplay between these secreted SEPs is essential to control the different human microbiomes to ensure coexistence rather than weakening the host against opportunistic infections. Thus\, determining the smORFome of bacterial-host ecosystems and studying its role in homeostasis are essential. In this seminar\, I will explain how by using different system biology approaches we discovered this layer of small peptides in Mycoplasma pneumoniae and our future plans to study their role in human microbiomes focusing in female reproductive tract.
URL:https://ibecbarcelona.eu/event/ibec-seminar-scaling-up-in-systems-biology-from-a-minimal-cell-to-microbiomes-2/
CATEGORIES:IBEC Seminar
ORGANIZER;CN="IBEC":MAILTO:www.ibecbarcelona.eu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161013T100000
DTEND;TZID=Europe/Madrid:20161013T110000
DTSTAMP:20260405T204912
CREATED:20161007T133132Z
LAST-MODIFIED:20161010T161238Z
UID:24827-1476352800-1476356400@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Scaling up in Systems Biology: from a minimal cell to microbiomes
DESCRIPTION:Scaling up in Systems Biology: from a minimal cell to microbiomes\nMaria Lluch Senar\, Design of Biological Systems grup\, Centre for Genomic Regulation (CRG)\nUltra-sequencing technologies have allowed the massive identification of human-associated microbiomes. Genome annotations of microbiomes consider conserved ORFs or those encoding for proteins larger than 100aa. However\, growing evidence highlight the existence of a hidden universe of small genes (smORFs) encoding for small peptides (SEPs; <100aa)\, many of them secreted\, being involved in infection and quorum sensing. Also\, in eukaryotes\, small antimicrobial peptides (AMPs) are secreted in response to infection. The interplay between these secreted SEPs is essential to control the different human microbiomes to ensure coexistence rather than weakening the host against opportunistic infections. Thus\, determining the smORFome of bacterial-host ecosystems and studying its role in homeostasis are essential. In this seminar\, I will explain how by using different system biology approaches we discovered this layer of small peptides in Mycoplasma pneumoniae and our future plans to study their role in human microbiomes focusing in female reproductive tract.
URL:https://ibecbarcelona.eu/event/ibec-seminar-scaling-up-in-systems-biology-from-a-minimal-cell-to-microbiomes/
CATEGORIES:IBEC Seminar
ORGANIZER;CN="IBEC":MAILTO:www.ibecbarcelona.eu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161013T150000
DTEND;TZID=Europe/Madrid:20161013T160000
DTSTAMP:20260405T204912
CREATED:20161006T150918Z
LAST-MODIFIED:20161006T150918Z
UID:95920-1476370800-1476374400@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Targeting fibroblast durotaxis as anti-fibrotic therapy
DESCRIPTION:Targeting fibroblast durotaxis as anti-fibrotic therapy\nDr. David Lagares\, Harvard Medical School\nDysregulated wound repair process in response to chronic tissue injury can lead to the development of tissue fibrosis in most organs. Fibrosis is characterized by accumulation of collagens and other matrix proteins that result in the distortion of tissue architecture\, and ultimately organ failure\, in variety of human diseases including idiopathic pulmonary fibrosis (IPF). Tissue stiffening\, traditionally thought to simply be a consequence of lung fibrosis\, has been recently shown to be a contributing factor to its pathogenesis by inducing fibroblasts differentiation into activated myofibroblasts\, the principal effector cells responsible matrix deposition. \nThe cellular and molecular mechanisms through which increased tissue rigidity drives disease progression remain to be fully elucidated. Using atomic force microscopy (AFM) to mechanically characterize the “topography”\, i.e. the spatial distribution\, of alterations in matrix stiffness produced in mouse models of lung fibrosis\, we consistently found that stiffness\, rather than being uniformly elevated in lung fibrotic tissues from animals models\, rises and falls in spatial gradients between “peaks” and “valleys.” We hypothesize that the stiffness “peaks” represent areas in which the fibrotic process was initiated\, or “nucleated”. Once fibrosis is nucleated\, the stiffness gradients leading to these fibrotic peaks are amplified by fibroblast “durotaxis\,” – the directed migration of cells from regions of lower to higher stiffness\, which occurs in the absence of chemoattractant gradients. Using hydrogels that recapitulate the stiffness gradients observed in animal fibrosis models\, we demonstrated durotaxis of lung fibroblasts in time-lapse microscopy studies. In human studies with lung tissues from IPF patients\, AFM revealed similar stiffness topography as we observed in mouse models\, i.e. the presence of focal peaks surrounded by stiffness gradients. Of note\, we have also found that primary lung fibroblasts from IPF patients exhibit greater durotactic responses to stiffness gradients than do control lung fibroblasts. In efforts to identify the molecular pathways involved in cell durotaxis\, we have found that the increased durotaxis of IPF fibroblasts may be attributable\, at least in part\, to increased acetylation of their microtubules. Acetylation of α-tubulin is dependent on α-tubulin acetyltransferase (αTAT1) activity\, which is upregulated in fibrotic fibroblasts compared with controls. siRNA-mediated αTAT1 downregulation in these fibrotic fibroblasts reduced their pro-durotactic phenotype without affecting fibroblast chemotaxis.  In vivo\, αTAT-1-deficient mice were protected from bleomycin-induced lung fibrosis\, as assessed qualitatively by histology and quantitatively by hydroxyproline levels. Together\, we identified a novel mechanism through which gradients of matrix stiffness produced in the injured lung drives the progression of lung fibrosis\, by recruiting additional fibroblasts to sites of injury and incipient fibrosis through durotaxis. We consequently hypothesize that inhibition of fibroblast durotaxis has the potential to be an entirely new therapeutic strategy for IPF and other fibrotic diseases.
URL:https://ibecbarcelona.eu/event/ibec-seminar-targeting-fibroblast-durotaxis-as-anti-fibrotic-therapy-2/
CATEGORIES:IBEC Seminar
ORGANIZER;CN="IBEC":MAILTO:www.ibecbarcelona.eu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161013T150000
DTEND;TZID=Europe/Madrid:20161013T160000
DTSTAMP:20260405T204912
CREATED:20161006T150918Z
LAST-MODIFIED:20161010T161431Z
UID:24823-1476370800-1476374400@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Targeting fibroblast durotaxis as anti-fibrotic therapy
DESCRIPTION:Targeting fibroblast durotaxis as anti-fibrotic therapy\nDr. David Lagares\, Harvard Medical School\nDysregulated wound repair process in response to chronic tissue injury can lead to the development of tissue fibrosis in most organs. Fibrosis is characterized by accumulation of collagens and other matrix proteins that result in the distortion of tissue architecture\, and ultimately organ failure\, in variety of human diseases including idiopathic pulmonary fibrosis (IPF). Tissue stiffening\, traditionally thought to simply be a consequence of lung fibrosis\, has been recently shown to be a contributing factor to its pathogenesis by inducing fibroblasts differentiation into activated myofibroblasts\, the principal effector cells responsible matrix deposition. \nThe cellular and molecular mechanisms through which increased tissue rigidity drives disease progression remain to be fully elucidated. Using atomic force microscopy (AFM) to mechanically characterize the “topography”\, i.e. the spatial distribution\, of alterations in matrix stiffness produced in mouse models of lung fibrosis\, we consistently found that stiffness\, rather than being uniformly elevated in lung fibrotic tissues from animals models\, rises and falls in spatial gradients between “peaks” and “valleys.” We hypothesize that the stiffness “peaks” represent areas in which the fibrotic process was initiated\, or “nucleated”. Once fibrosis is nucleated\, the stiffness gradients leading to these fibrotic peaks are amplified by fibroblast “durotaxis\,” – the directed migration of cells from regions of lower to higher stiffness\, which occurs in the absence of chemoattractant gradients. Using hydrogels that recapitulate the stiffness gradients observed in animal fibrosis models\, we demonstrated durotaxis of lung fibroblasts in time-lapse microscopy studies. In human studies with lung tissues from IPF patients\, AFM revealed similar stiffness topography as we observed in mouse models\, i.e. the presence of focal peaks surrounded by stiffness gradients. Of note\, we have also found that primary lung fibroblasts from IPF patients exhibit greater durotactic responses to stiffness gradients than do control lung fibroblasts. In efforts to identify the molecular pathways involved in cell durotaxis\, we have found that the increased durotaxis of IPF fibroblasts may be attributable\, at least in part\, to increased acetylation of their microtubules. Acetylation of α-tubulin is dependent on α-tubulin acetyltransferase (αTAT1) activity\, which is upregulated in fibrotic fibroblasts compared with controls. siRNA-mediated αTAT1 downregulation in these fibrotic fibroblasts reduced their pro-durotactic phenotype without affecting fibroblast chemotaxis.  In vivo\, αTAT-1-deficient mice were protected from bleomycin-induced lung fibrosis\, as assessed qualitatively by histology and quantitatively by hydroxyproline levels. Together\, we identified a novel mechanism through which gradients of matrix stiffness produced in the injured lung drives the progression of lung fibrosis\, by recruiting additional fibroblasts to sites of injury and incipient fibrosis through durotaxis. We consequently hypothesize that inhibition of fibroblast durotaxis has the potential to be an entirely new therapeutic strategy for IPF and other fibrotic diseases.
URL:https://ibecbarcelona.eu/event/ibec-seminar-targeting-fibroblast-durotaxis-as-anti-fibrotic-therapy/
CATEGORIES:IBEC Seminar
ORGANIZER;CN="IBEC":MAILTO:www.ibecbarcelona.eu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161116T123000
DTEND;TZID=Europe/Madrid:20161116T133000
DTSTAMP:20260405T204912
CREATED:20161111T084218Z
LAST-MODIFIED:20161115T115233Z
UID:25828-1479299400-1479303000@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Dr. Silvia Muro\, Nanobiotechnology for drug delivery
DESCRIPTION:Nanobio-technology for drug delivery: fundamental aspects and translational applications\nDr. Silvia Muro\, University of Maryland\, College Park\, MD\, USA\nThe design of targeting and carrier strategies to enable delivery of therapeutic or diagnostic agents to areas of the body requiring intervention is an active research field. Therapeutic and diagnostic targets are often confined to specific regions or tissues in the body\, where access may require active transport from the circulation into the subjacent tissue. In addition\, once within the tissue or body compartment of interest\, most targets of intervention relate to sub-cellular environments\, e.g.\, the cell surface versus different intracellular compartments\, further requiring strategies to achieve this goal. \nUsing polymer nanocarriers functionalized with affinity moieties against single or combined cell-surface receptors\, along with additional biological signaling moieties\, my laboratory focuses on understanding the parameters that regulate transport of drug delivery vehicles across cellular barriers and into cells of subjacent tissues. We examine these aspects using cell culture models with subsequent validation in laboratory animals to correlate molecular/cellular mechanisms with in vivo outcomes. We investigate the influence exerted on targeting and uptake by drug carrier design parameters (size\, shape\, avidity\, combination targeting\, etc.) and parameters that are intrinsic to the physiological system (disease states\, flow\, receptor epitopes being targeted\, modulation of regulatory molecules\, etc.). The characterization of these complex physiological and design parameters\, along with the understanding of the mechanisms governing the interaction of drugs carriers with the surrounding biological environment\, are necessary steps toward achieving efficient drug delivery systems.
URL:https://ibecbarcelona.eu/event/ibec-seminar-nanobio-technology-for-drug-delivery-fundamental-aspects-and-translational-applications/
CATEGORIES:IBEC Seminar
ORGANIZER;CN="IBEC":MAILTO:www.ibecbarcelona.eu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161116T123000
DTEND;TZID=Europe/Madrid:20161116T133000
DTSTAMP:20260405T204912
CREATED:20161111T084218Z
LAST-MODIFIED:20161111T084218Z
UID:95938-1479299400-1479303000@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Dr. Silvia Muro\, Nanobiotechnology for drug delivery
DESCRIPTION:Nanobio-technology for drug delivery: fundamental aspects and translational applications\nDr. Silvia Muro\, University of Maryland\, College Park\, MD\, USA\nThe design of targeting and carrier strategies to enable delivery of therapeutic or diagnostic agents to areas of the body requiring intervention is an active research field. Therapeutic and diagnostic targets are often confined to specific regions or tissues in the body\, where access may require active transport from the circulation into the subjacent tissue. In addition\, once within the tissue or body compartment of interest\, most targets of intervention relate to sub-cellular environments\, e.g.\, the cell surface versus different intracellular compartments\, further requiring strategies to achieve this goal. \nUsing polymer nanocarriers functionalized with affinity moieties against single or combined cell-surface receptors\, along with additional biological signaling moieties\, my laboratory focuses on understanding the parameters that regulate transport of drug delivery vehicles across cellular barriers and into cells of subjacent tissues. We examine these aspects using cell culture models with subsequent validation in laboratory animals to correlate molecular/cellular mechanisms with in vivo outcomes. We investigate the influence exerted on targeting and uptake by drug carrier design parameters (size\, shape\, avidity\, combination targeting\, etc.) and parameters that are intrinsic to the physiological system (disease states\, flow\, receptor epitopes being targeted\, modulation of regulatory molecules\, etc.). The characterization of these complex physiological and design parameters\, along with the understanding of the mechanisms governing the interaction of drugs carriers with the surrounding biological environment\, are necessary steps toward achieving efficient drug delivery systems.
URL:https://ibecbarcelona.eu/event/ibec-seminar-nanobio-technology-for-drug-delivery-fundamental-aspects-and-translational-applications-2/
CATEGORIES:IBEC Seminar
ORGANIZER;CN="IBEC":MAILTO:www.ibecbarcelona.eu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161118T120000
DTEND;TZID=Europe/Madrid:20161118T130000
DTSTAMP:20260405T204912
CREATED:20161111T084848Z
LAST-MODIFIED:20161111T084848Z
UID:95939-1479470400-1479474000@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Enabling technologies for biofabrication of functional materials and biomimetic environments
DESCRIPTION:Enabling technologies for biofabrication of functional materials and biomimetic environments\nDr. Alvaro Mata\, Director of the Institute of Bioengineering at Queen Mary University of London\nThe talk will present novel self-assembling and printing technologies enabling the fabrication of 2D and 3D bioactive and/or biomimetic materials for potential application in tissue engineering\, regenerative medicine\, and in vitro models. \nExamples of projects that will be presented include a) a bioactive membrane capable of growing hierarchically-ordered hydroxyapatite structures that resemble those found in human dental enamel; b) a dynamic self-assembling peptide-protein system capable of controllably accessing non-equilibrium to grow tubes and capillaries with potential application in tissue engineering; and c) a simple 3D molecular printing method to create distinct chemical environments ranging from tens of microns to centimeters in size and depth within different types of hydrogels.
URL:https://ibecbarcelona.eu/event/ibec-seminar-enabling-technologies-for-biofabrication-of-functional-materials-and-biomimetic-environments-2/
CATEGORIES:IBEC Seminar
ORGANIZER;CN="IBEC":MAILTO:www.ibecbarcelona.eu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161118T120000
DTEND;TZID=Europe/Madrid:20161118T130000
DTSTAMP:20260405T204912
CREATED:20161111T084848Z
LAST-MODIFIED:20161114T164758Z
UID:25831-1479470400-1479474000@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Enabling technologies for biofabrication of functional materials and biomimetic environments
DESCRIPTION:Enabling technologies for biofabrication of functional materials and biomimetic environments\nDr. Alvaro Mata\, Director of the Institute of Bioengineering at Queen Mary University of London\nThe talk will present novel self-assembling and printing technologies enabling the fabrication of 2D and 3D bioactive and/or biomimetic materials for potential application in tissue engineering\, regenerative medicine\, and in vitro models. \nExamples of projects that will be presented include a) a bioactive membrane capable of growing hierarchically-ordered hydroxyapatite structures that resemble those found in human dental enamel; b) a dynamic self-assembling peptide-protein system capable of controllably accessing non-equilibrium to grow tubes and capillaries with potential application in tissue engineering; and c) a simple 3D molecular printing method to create distinct chemical environments ranging from tens of microns to centimeters in size and depth within different types of hydrogels.
URL:https://ibecbarcelona.eu/event/ibec-seminar-enabling-technologies-for-biofabrication-of-functional-materials-and-biomimetic-environments/
CATEGORIES:IBEC Seminar
ORGANIZER;CN="IBEC":MAILTO:www.ibecbarcelona.eu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161122T150000
DTEND;TZID=Europe/Madrid:20161122T160000
DTSTAMP:20260405T204912
CREATED:20161116T160120Z
LAST-MODIFIED:20161116T160120Z
UID:95955-1479826800-1479830400@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Herbert Levine
DESCRIPTION:Models of individual and collective cell motility\nHerbert Levine\, Director\, Center for Theoretical Biological Physics (CTBP)\, Rice University\, Houston\nEukaryotic cells can move either individually or collectively and this property is crucial for many biological functions. Often cells use directional information to decide on their direction; for single cells this can take the form of chemical or mechanical gradients. For collective motion\, additional information can be obtained from neighboring cells through such processes as the contact inhibition of locomotion. Our group develops a variety of computational models for studying actin-based crawling motions. These models range from rather complex and detailed at the single cell levels to simple reduced representations that can handle tissue-level processes. This talk will focus on out recent progress in this direction\, specifically on collective chemotaxis of cellular clusters and the role of contact inhibition in the mechanical state of expanding tissues.
URL:https://ibecbarcelona.eu/event/ibec-seminar-herbert-levine-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20161122T150000
DTEND;TZID=Europe/Madrid:20161122T160000
DTSTAMP:20260405T204912
CREATED:20161116T160120Z
LAST-MODIFIED:20161116T160456Z
UID:25914-1479826800-1479830400@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Herbert Levine
DESCRIPTION:Models of individual and collective cell motility\nHerbert Levine\, Director\, Center for Theoretical Biological Physics (CTBP)\, Rice University\, Houston\nEukaryotic cells can move either individually or collectively and this property is crucial for many biological functions. Often cells use directional information to decide on their direction; for single cells this can take the form of chemical or mechanical gradients. For collective motion\, additional information can be obtained from neighboring cells through such processes as the contact inhibition of locomotion. Our group develops a variety of computational models for studying actin-based crawling motions. These models range from rather complex and detailed at the single cell levels to simple reduced representations that can handle tissue-level processes. This talk will focus on out recent progress in this direction\, specifically on collective chemotaxis of cellular clusters and the role of contact inhibition in the mechanical state of expanding tissues.
URL:https://ibecbarcelona.eu/event/ibec-seminar-herbert-levine/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170116T120000
DTEND;TZID=Europe/Madrid:20170116T130000
DTSTAMP:20260405T204912
CREATED:20170111T111500Z
LAST-MODIFIED:20170111T111500Z
UID:95966-1484568000-1484571600@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Christian A. Nijhuis
DESCRIPTION:Molecular Diodes with Rectification Ratios of Nearly Six Orders of Magnitude\nChristian A. Nijhuis\, Department of Chemistry\, National University of Singapore\nOne of the major goals of molecular electronics is to relate the performance and electronic function of molecular devices to the chemical structure and intermolecular interactions of the organic molecules inside them. Molecular electronic devices are complex physical-organic systems that consist of at least two electrodes\, the organic component\, and two (different) organic/inorganic interfaces. Singling out the contribution of each of these components to the device performance is not straightforward. Besides\, fabrication of molecular junctions is still challenging and defects have to be minimized. \nDuring the talk\, I will discuss our recent progress of molecular diodes based on self-assembled monolayers (SAMs) of ferrocene-alkanethiolates of the form H(CH2)nFc (Fc = ferrocene) sandwiched between two electrodes. I will discuss in detail how we fabricate the junctions (using the well-characterized “EGaIn”-technique) and characterize our junctions and SAMs. We have investigated the various sources of defects in the junctions caused by the impurities in the SAM precursors\,[1] defects in the electrode material\,[2] or subtle changes to the electronic[3] and supramolecular structure of the junctions.[4] We used this accumulated knowledge to develop a well-performing diode that blocks the current in one direction of bias\, but allows it to pass through in the other\, with a difference of a factor of 6.3 x 105.[5\,6] \nWe hope that our findings will help to guide future experiments and to explain why some on paper promising diodes had disappointing performances.[7] \nReferences\n1) Jiang\, L.; Yuan\, L.; Cao\, L.; Nijhuis\, C. A. J. Am. Chem. Soc. 2014\, 136\, 1982.\n2) Yuan\, L.; jiang\, L.; Thompson\, D.; Nijhuis\, C. A. J. Am. Chem. Soc. 2014\, 136\, 6554.\n3) Yuan\, L.; Nerngchamnong\, N.; Cao\, L.; Hamoudi\, H.; Del Barco\, E.; Roemer\, M.; Sriramula\, R.; Thompson\, D.; Nijhuis\, C. A. Nat. Commun. 2015\, 6.\n4) Nerngchanmnong\, N.; Yuan\, L.; Qi\, D. C.; Jiang\, L.; Thompson\, D.; Nijhuis\, C. A. Nat. Nanotechnol. 2013\, 8\, 113.\n5) Yuan\, L.; Breuer\, R.; Jiang\, L.; Schmittel\, M.; Nijhuis\, C. A. Nano Lett. 2015\, 15\, 5506.\n6) Chen\, X.; Roemer\, M.; Yuan\, L.; Wei\, D.; Del Barco\, E.; Thompson\, D.; Nijhuis\, C.A. submitted\n7) Thompson\, D.; Nijhuis\, C. A. Acc. Chem. Res. 2016\, 49\, 2061
URL:https://ibecbarcelona.eu/event/ibec-seminar-christian-a-nijhuis-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170116T120000
DTEND;TZID=Europe/Madrid:20170116T130000
DTSTAMP:20260405T204912
CREATED:20170111T111500Z
LAST-MODIFIED:20170111T111500Z
UID:27046-1484568000-1484571600@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Christian A. Nijhuis
DESCRIPTION:Molecular Diodes with Rectification Ratios of Nearly Six Orders of Magnitude\nChristian A. Nijhuis\, Department of Chemistry\, National University of Singapore\nOne of the major goals of molecular electronics is to relate the performance and electronic function of molecular devices to the chemical structure and intermolecular interactions of the organic molecules inside them. Molecular electronic devices are complex physical-organic systems that consist of at least two electrodes\, the organic component\, and two (different) organic/inorganic interfaces. Singling out the contribution of each of these components to the device performance is not straightforward. Besides\, fabrication of molecular junctions is still challenging and defects have to be minimized. \nDuring the talk\, I will discuss our recent progress of molecular diodes based on self-assembled monolayers (SAMs) of ferrocene-alkanethiolates of the form H(CH2)nFc (Fc = ferrocene) sandwiched between two electrodes. I will discuss in detail how we fabricate the junctions (using the well-characterized “EGaIn”-technique) and characterize our junctions and SAMs. We have investigated the various sources of defects in the junctions caused by the impurities in the SAM precursors\,[1] defects in the electrode material\,[2] or subtle changes to the electronic[3] and supramolecular structure of the junctions.[4] We used this accumulated knowledge to develop a well-performing diode that blocks the current in one direction of bias\, but allows it to pass through in the other\, with a difference of a factor of 6.3 x 105.[5\,6] \nWe hope that our findings will help to guide future experiments and to explain why some on paper promising diodes had disappointing performances.[7] \nReferences\n1) Jiang\, L.; Yuan\, L.; Cao\, L.; Nijhuis\, C. A. J. Am. Chem. Soc. 2014\, 136\, 1982.\n2) Yuan\, L.; jiang\, L.; Thompson\, D.; Nijhuis\, C. A. J. Am. Chem. Soc. 2014\, 136\, 6554.\n3) Yuan\, L.; Nerngchamnong\, N.; Cao\, L.; Hamoudi\, H.; Del Barco\, E.; Roemer\, M.; Sriramula\, R.; Thompson\, D.; Nijhuis\, C. A. Nat. Commun. 2015\, 6.\n4) Nerngchanmnong\, N.; Yuan\, L.; Qi\, D. C.; Jiang\, L.; Thompson\, D.; Nijhuis\, C. A. Nat. Nanotechnol. 2013\, 8\, 113.\n5) Yuan\, L.; Breuer\, R.; Jiang\, L.; Schmittel\, M.; Nijhuis\, C. A. Nano Lett. 2015\, 15\, 5506.\n6) Chen\, X.; Roemer\, M.; Yuan\, L.; Wei\, D.; Del Barco\, E.; Thompson\, D.; Nijhuis\, C.A. submitted\n7) Thompson\, D.; Nijhuis\, C. A. Acc. Chem. Res. 2016\, 49\, 2061
URL:https://ibecbarcelona.eu/event/ibec-seminar-christian-a-nijhuis/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170203T100000
DTEND;TZID=Europe/Madrid:20170203T110000
DTSTAMP:20260405T204912
CREATED:20170202T075031Z
LAST-MODIFIED:20170202T075031Z
UID:27390-1486116000-1486119600@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Giuseppe Battaglia
DESCRIPTION:Bionic nanoscopic carriers for precision drug delivery\nGiuseppe Battaglia\, Department of Chemistry and Department of Chemical Engineering\, University College London\nGetting across biological barriers and deliver therapeutic cargo to the right site is indeed a very challenging task that requires the judicious combination of physiological information with carrier engineering. In the last decade\, we have approached this problem\, applying a constructionist approach where we mimic biological complexity in the form of design principles to produce functional bionic units from simple building blocks and their interactions. We combine synthetic and supramolecular chemistry to tune inter/intramolecular interactions and self-assembly processes to form dynamic soft materials. Among the different bionic efforts\, we have focussed our attention to possibly one of the few that encompasses polymerisation\, compartmentalisation and positional self-assembly in the same unit; Polymersomes. These are vesicles formed by the self-assembly of amphiphilic block copolymers in water. We have equipped polymersomes with the critical elements to address the challenges for getting across biological barriers. They have surface engineered to control both attractive (binding) and repulsive (anti-fouling) interaction with proteins and receptors to create systems that can avoid opsonisation and yet target specific cell populations. We have engineered their mechanical properties so as to be flexible and able to penetrate dense tissues exploiting size-exclusion percolation patterns. We have equipped them with both asymmetric topology and enzymes to control their fluid-dynamics and diffusion so as to create chemotactic and active propulsion toward endogenous signalling molecules. Finally\, we have engineered their shape and size to guide cellular endocytosis as well as to escape the endocytic sorting accessing and delivering cargo within the cell interior. \nI will present our design efforts discussing each structural and functional elements as a function of the respective biological challenge\, I will conclude presenting applications where these precision systems are being applied to address challenges in oncology\, immunology and neurology.
URL:https://ibecbarcelona.eu/event/ibec-seminar-giuseppe-battaglia/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170203T100000
DTEND;TZID=Europe/Madrid:20170203T110000
DTSTAMP:20260405T204912
CREATED:20170202T075031Z
LAST-MODIFIED:20170202T075031Z
UID:95975-1486116000-1486119600@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Giuseppe Battaglia
DESCRIPTION:Bionic nanoscopic carriers for precision drug delivery\nGiuseppe Battaglia\, Department of Chemistry and Department of Chemical Engineering\, University College London\nGetting across biological barriers and deliver therapeutic cargo to the right site is indeed a very challenging task that requires the judicious combination of physiological information with carrier engineering. In the last decade\, we have approached this problem\, applying a constructionist approach where we mimic biological complexity in the form of design principles to produce functional bionic units from simple building blocks and their interactions. We combine synthetic and supramolecular chemistry to tune inter/intramolecular interactions and self-assembly processes to form dynamic soft materials. Among the different bionic efforts\, we have focussed our attention to possibly one of the few that encompasses polymerisation\, compartmentalisation and positional self-assembly in the same unit; Polymersomes. These are vesicles formed by the self-assembly of amphiphilic block copolymers in water. We have equipped polymersomes with the critical elements to address the challenges for getting across biological barriers. They have surface engineered to control both attractive (binding) and repulsive (anti-fouling) interaction with proteins and receptors to create systems that can avoid opsonisation and yet target specific cell populations. We have engineered their mechanical properties so as to be flexible and able to penetrate dense tissues exploiting size-exclusion percolation patterns. We have equipped them with both asymmetric topology and enzymes to control their fluid-dynamics and diffusion so as to create chemotactic and active propulsion toward endogenous signalling molecules. Finally\, we have engineered their shape and size to guide cellular endocytosis as well as to escape the endocytic sorting accessing and delivering cargo within the cell interior. \nI will present our design efforts discussing each structural and functional elements as a function of the respective biological challenge\, I will conclude presenting applications where these precision systems are being applied to address challenges in oncology\, immunology and neurology.
URL:https://ibecbarcelona.eu/event/ibec-seminar-giuseppe-battaglia-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170208T120000
DTEND;TZID=Europe/Madrid:20170208T130000
DTSTAMP:20260405T204912
CREATED:20170203T102730Z
LAST-MODIFIED:20170203T102730Z
UID:95984-1486555200-1486558800@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Stijn Mertens
DESCRIPTION:Electrochemical surface science of TiO2 rutile (110)\, graphene and boron nitride\nStijn Mertens\, TU Wien\, Institute of Applied Physics / KU Leuven\, Chemistry Department\nThe rational design of catalysts and other functional materials requires an atomic-level understanding of their structure and of the interface to supporting surfaces. I will present an in situ electrochemical STM study of TiO2 rutile (110) with atomic resolution. This is achieved using a new wet-chemical cleaning procedure for the substrate and with Pt-Ir tips. If tungsten tips are used\, WO3 is spontaneously formed at the tungsten–liquid interface and strongly adsorbs on oxide surfaces below their point of zero charge through an electrostatic mechanism. Under clean conditions\, the TiO2 rutile (110) surface shows a bulk-like\, unreconstructed structure\, which resembles its appearance in vacuum\, even though the surface is probably fully hydroxylated. \nIn the second part of my talk\, I will focus on 2D materials graphene and hexagonal boron nitride. By combining electrochemical grafting of diazonium salts with tip-induced nanolithography\, nanopatterned sp3 defects can be introduced\, opening perspectives towards graphene band gap engineering [1\,2]. Hexagonal boron nitride\, isoelectronic with graphene\, can be grown on Rh(111) and forms a so-called nanomesh superstructure [3]\, characterized by a 3.2-nm lattice constant and strong electronic corrugation\, useful for trapping atoms and molecules. Electrochemical intercalation of hydrogen between the boron nitride layer and the rhodium substrate leads to microscopic flattening within the 2-dimensional material and a macroscopic 10% change in adsorption energy [4]. \n[1] Greenwood et al.\, ACS Nano 9\, 2015\, 5520.\n[2] Huynh et al.\, Nanoscale 9\, 2017\, 362.\n[3] Corso et al.\, Science 303\, 2004\, 217.\n[4] Mertens et al.\, Nature 534\, 2016\, 676.
URL:https://ibecbarcelona.eu/event/ibec-seminar-stijn-mertens-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170208T120000
DTEND;TZID=Europe/Madrid:20170208T130000
DTSTAMP:20260405T204912
CREATED:20170203T102730Z
LAST-MODIFIED:20170213T120656Z
UID:27427-1486555200-1486558800@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Stijn Mertens
DESCRIPTION:Electrochemical surface science of TiO2 rutile (110)\, graphene and boron nitride\nStijn Mertens\, TU Wien\, Institute of Applied Physics / KU Leuven\, Chemistry Department\nThe rational design of catalysts and other functional materials requires an atomic-level understanding of their structure and of the interface to supporting surfaces. I will present an in situ electrochemical STM study of TiO2 rutile (110) with atomic resolution. This is achieved using a new wet-chemical cleaning procedure for the substrate and with Pt-Ir tips. If tungsten tips are used\, WO3 is spontaneously formed at the tungsten–liquid interface and strongly adsorbs on oxide surfaces below their point of zero charge through an electrostatic mechanism. Under clean conditions\, the TiO2 rutile (110) surface shows a bulk-like\, unreconstructed structure\, which resembles its appearance in vacuum\, even though the surface is probably fully hydroxylated. \nIn the second part of my talk\, I will focus on 2D materials graphene and hexagonal boron nitride. By combining electrochemical grafting of diazonium salts with tip-induced nanolithography\, nanopatterned sp3 defects can be introduced\, opening perspectives towards graphene band gap engineering [1\,2]. Hexagonal boron nitride\, isoelectronic with graphene\, can be grown on Rh(111) and forms a so-called nanomesh superstructure [3]\, characterized by a 3.2-nm lattice constant and strong electronic corrugation\, useful for trapping atoms and molecules. Electrochemical intercalation of hydrogen between the boron nitride layer and the rhodium substrate leads to microscopic flattening within the 2-dimensional material and a macroscopic 10% change in adsorption energy [4]. \n[1] Greenwood et al.\, ACS Nano 9\, 2015\, 5520.\n[2] Huynh et al.\, Nanoscale 9\, 2017\, 362.\n[3] Corso et al.\, Science 303\, 2004\, 217.\n[4] Mertens et al.\, Nature 534\, 2016\, 676.
URL:https://ibecbarcelona.eu/event/ibec-seminar-stijn-mertens/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170216T100000
DTEND;TZID=Europe/Madrid:20170216T110000
DTSTAMP:20260405T204912
CREATED:20170213T100423Z
LAST-MODIFIED:20170213T100423Z
UID:95987-1487239200-1487242800@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Jesús Martínez de la Fuente
DESCRIPTION:Designing Hybrid Nanoparticles for Therapy and Diagnosis\nJesús Martínez de la Fuente\, Instituto de Ciencia de Materiales de Aragón\, CSIC/University of Zaragoza\nIn the last decades\, inorganic nanoparticles have been steadily gaining more attention from scientists from a wide variety of fields such as material science\, engineering\, physics or chemistry. The very different properties compared to that of the respective bulk\, and thus intriguing characteristics of materials in the nanometre scale\, have driven nanoscience to be the centre of many basic and applied research topics. Moreover\, a wide variety of recently developed methodologies for their surface functionalization provide these materials with very specific properties such as drug delivery and circulating cancer biomarkers detection. In this talk we describe the synthesis and functionalization of gold nanoparticles as therapeutic and diagnosis tools against cancer: \n-Pseudo-spherical gold nanoparticles derivatized with with fluorescent dyes\, cell penetrating peptides and small interfering RNA (siRNA) complementary to the proto-oncogene myc have been tested using a hierarchical approach including three biological systems of increasing complexity: in vitro cultured human cells\, in vivo invertebrate (freshwater polyp\, Hydra) and in vivo vertebrate (mouse) model. Selection of the most active functionalities was assisted step by step through functional testing adopting this hierarchical strategy.(1) Merging these chemical and biological approaches lead to a siRNA/RGD gold nanoparticle capable of targeting tumor cells in lung cancer xenograft mouse model\, resulting in successful and significant c-myc oncogene downregulation followed by tumor growth inhibition and prolonged survival of the animals.(2) \n-Gold nanoprisms (NPRs) have been functionalized with PEG\, glucose\, cell penetrating and RGD peptides\, antibodies and/or fluorescent dyes\, aiming to enhance NPRs stability\, cellular uptake and imaging capabilities\, respectively.(3) Cellular uptake and impact was assayed by a multiparametric investigation on the impact of surface modified NPRs on mice and human primary and transform cell lines. Under NIR illumination\, these nanoprobes can cause apoptosis. Moreover\, these nanoparticles have also been used for optoacoustic imaging and cancer treatment\,(4) as well as for tumoral marker detection using a novel type of thermal ELISA nanobiosensor using a thermosensitive support.(5) \nReferences\n[1] J. Conde\, A. Ambrosone\, V. Sanz\, Y. Hernandez\, F. Tian\, P. V. Baptista\, M. R. Ibarra\, C. Tortiglione\, J. M. de la Fuente. ACS Nano\, 2012\, 6\, 8316.\n[2] J. Conde\, F. Tian\, Y. Hernández\, C. Bao\, D. Cui\, M. R. Ibarra\, P. V. Baptista\, J. M. de la Fuente. Biomaterials. 2013\, 34\, 7744.\n[3] a) B. Pelaz\, V. Grazú\, A. Ibarra\, C. Magén\, P. del Pino\, J. M. de la Fuente. Langmuir\, 2012\, 28\, 8965 ; b) M. Perez-Hernandez\, P. del Pino\, S.G. Mitchell\, M. Moros\, G. Stepien\, B. Pelaz\, W.J. Parak\, E.M. Galvez\, J. Pardo\, J.M. de la Fuente. ACS Nano\, 2015\, 9\, 52\n[4] a) C. Bao\, N. Beziere\, P. del Pino\, B. Pelaz\, G. Estrada\, F. Tian\, V. Ntziachristos\, J. M. de la Fuente\, D. Cui. Small\, 2013\, 9\, 68 ; b) J. Han\, J. Zhang\, M. Yang\, D. Cui\, J.M. de la Fuente. Nanoscale\, 2016 (in press)\n[5] E. Polo\, P. del Pino\,  B. Pelaz\,  V. Grazu\, J.M. de la Fuente. Chemical Communications\, 2013\, 49\, 3676.
URL:https://ibecbarcelona.eu/event/ibec-seminar-jesus-martinez-de-la-fuente-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170216T100000
DTEND;TZID=Europe/Madrid:20170216T110000
DTSTAMP:20260405T204912
CREATED:20170213T100423Z
LAST-MODIFIED:20170214T123640Z
UID:27592-1487239200-1487242800@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Jesús Martínez de la Fuente
DESCRIPTION:Designing Hybrid Nanoparticles for Therapy and Diagnosis\nJesús Martínez de la Fuente\, Instituto de Ciencia de Materiales de Aragón\, CSIC/University of Zaragoza\nIn the last decades\, inorganic nanoparticles have been steadily gaining more attention from scientists from a wide variety of fields such as material science\, engineering\, physics or chemistry. The very different properties compared to that of the respective bulk\, and thus intriguing characteristics of materials in the nanometre scale\, have driven nanoscience to be the centre of many basic and applied research topics. Moreover\, a wide variety of recently developed methodologies for their surface functionalization provide these materials with very specific properties such as drug delivery and circulating cancer biomarkers detection. In this talk we describe the synthesis and functionalization of gold nanoparticles as therapeutic and diagnosis tools against cancer: \n-Pseudo-spherical gold nanoparticles derivatized with with fluorescent dyes\, cell penetrating peptides and small interfering RNA (siRNA) complementary to the proto-oncogene myc have been tested using a hierarchical approach including three biological systems of increasing complexity: in vitro cultured human cells\, in vivo invertebrate (freshwater polyp\, Hydra) and in vivo vertebrate (mouse) model. Selection of the most active functionalities was assisted step by step through functional testing adopting this hierarchical strategy.(1) Merging these chemical and biological approaches lead to a siRNA/RGD gold nanoparticle capable of targeting tumor cells in lung cancer xenograft mouse model\, resulting in successful and significant c-myc oncogene downregulation followed by tumor growth inhibition and prolonged survival of the animals.(2) \n-Gold nanoprisms (NPRs) have been functionalized with PEG\, glucose\, cell penetrating and RGD peptides\, antibodies and/or fluorescent dyes\, aiming to enhance NPRs stability\, cellular uptake and imaging capabilities\, respectively.(3) Cellular uptake and impact was assayed by a multiparametric investigation on the impact of surface modified NPRs on mice and human primary and transform cell lines. Under NIR illumination\, these nanoprobes can cause apoptosis. Moreover\, these nanoparticles have also been used for optoacoustic imaging and cancer treatment\,(4) as well as for tumoral marker detection using a novel type of thermal ELISA nanobiosensor using a thermosensitive support.(5) \nReferences\n[1] J. Conde\, A. Ambrosone\, V. Sanz\, Y. Hernandez\, F. Tian\, P. V. Baptista\, M. R. Ibarra\, C. Tortiglione\, J. M. de la Fuente. ACS Nano\, 2012\, 6\, 8316.\n[2] J. Conde\, F. Tian\, Y. Hernández\, C. Bao\, D. Cui\, M. R. Ibarra\, P. V. Baptista\, J. M. de la Fuente. Biomaterials. 2013\, 34\, 7744.\n[3] a) B. Pelaz\, V. Grazú\, A. Ibarra\, C. Magén\, P. del Pino\, J. M. de la Fuente. Langmuir\, 2012\, 28\, 8965 ; b) M. Perez-Hernandez\, P. del Pino\, S.G. Mitchell\, M. Moros\, G. Stepien\, B. Pelaz\, W.J. Parak\, E.M. Galvez\, J. Pardo\, J.M. de la Fuente. ACS Nano\, 2015\, 9\, 52\n[4] a) C. Bao\, N. Beziere\, P. del Pino\, B. Pelaz\, G. Estrada\, F. Tian\, V. Ntziachristos\, J. M. de la Fuente\, D. Cui. Small\, 2013\, 9\, 68 ; b) J. Han\, J. Zhang\, M. Yang\, D. Cui\, J.M. de la Fuente. Nanoscale\, 2016 (in press)\n[5] E. Polo\, P. del Pino\,  B. Pelaz\,  V. Grazu\, J.M. de la Fuente. Chemical Communications\, 2013\, 49\, 3676.
URL:https://ibecbarcelona.eu/event/ibec-seminar-jesus-martinez-de-la-fuente/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170303T100000
DTEND;TZID=Europe/Madrid:20170303T110000
DTSTAMP:20260405T204912
CREATED:20170213T103423Z
LAST-MODIFIED:20170213T103423Z
UID:95988-1488535200-1488538800@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Maria Virumbrales
DESCRIPTION:“Development of microfluidic tools to reproduce and characterize the tumor microenvironment”\nMaria Virumbrales\, University of Zaragoza\nCompelling evidence over the years has demonstrated that the tumor microenvironment (TME) shapes tumor initiation\, development and response to therapy. This results in a high heterogeneity within the same cancer type\, and hinders the process of finding effective treatments.[1\,2] \nIn this context\, microfluidics has proven a worthy sum of techniques to create comprehensive and personalized cancer in vitro 3D models reproducing the TME in a more relevant fashion than traditional in vitro setups. \nMicrofluidics also permits a high degree of control over the setup\, combining different cell types in an orderly manner\, as well as different physical and biochemical cues. [3] Furthermore\, microfluidics facilitates optical inspection and diminishes sample sizes and reagent volumes needed for each experiment. Microfluidic devices are also compatible with high-throughput approaches\, which make them an interesting option for drug testing\, research and development.[4] \nHence\, we developed two microfluidic tumor models\, which we used to model and characterize different aspects of the TME. TME was characterized in terms of hypoxia\, proliferation rates\, reactive oxygen species concentration\, apoptosis rate and glucose uptake.[5] Moreover\, the influence of tumor cells on an endothelium was investigated. Furthermore\, we carried out pharmacodynamic and drug efficiency studies in these newly-established models. Thereafter\, we developed a simple enzymatic protocol to extract cells seeded in 3D from the microfluidic devices. Cells could be sorted by flow cytometry according to the expression of specific surface markers or by using different fluorescent stains. RNA was extracted for downstream quantification and gene profiling was carried out for the mentioned aspects of the tumor microenvironment. \nAll in all\, we developed two easy-to-use microfluidic models for personalized medicine capable of comprehensive reproduction of the TME\, which allows characterization of tumor signatures by means of microscopy and traditional benchtop methods. \n\nBalkwill FR\, Capasso M\, Hagemann T (2012) The tumor microenvironment at a glance. J Cell Sci 125: 5591-5596.\nKlemm F\, Joyce JA (2015) Microenvironmental regulation of therapeutic response in cancer. Trends Cell Biol 25: 198-213.\nSackmann EK\, Fulton AL\, Beebe DJ (2014) The present and future role of microfluidics in biomedical research. Nature 507: 181-189.\nDu G\, Fang Q\, den Toonder JMJ (2016) Microfluidics for cell-based high throughput screening platforms—A review. Analytica Chimica Acta 903: 36-50.\nAyuso JM\, Virumbrales-Munoz M\, Lacueva A\, Lanuza PM\, Checa-Chavarria E\, et al. (2016) Development and characterization of a microfluidic model of the tumour microenvironment. Sci Rep 6: 36086.\n\n 
URL:https://ibecbarcelona.eu/event/ibec-seminar-maria-virumbrales-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170303T100000
DTEND;TZID=Europe/Madrid:20170303T110000
DTSTAMP:20260405T204912
CREATED:20170213T103423Z
LAST-MODIFIED:20170215T152756Z
UID:27594-1488535200-1488538800@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Maria Virumbrales
DESCRIPTION:“Development of microfluidic tools to reproduce and characterize the tumor microenvironment”\nMaria Virumbrales\, University of Zaragoza\nCompelling evidence over the years has demonstrated that the tumor microenvironment (TME) shapes tumor initiation\, development and response to therapy. This results in a high heterogeneity within the same cancer type\, and hinders the process of finding effective treatments.[1\,2] \nIn this context\, microfluidics has proven a worthy sum of techniques to create comprehensive and personalized cancer in vitro 3D models reproducing the TME in a more relevant fashion than traditional in vitro setups. \nMicrofluidics also permits a high degree of control over the setup\, combining different cell types in an orderly manner\, as well as different physical and biochemical cues. [3] Furthermore\, microfluidics facilitates optical inspection and diminishes sample sizes and reagent volumes needed for each experiment. Microfluidic devices are also compatible with high-throughput approaches\, which make them an interesting option for drug testing\, research and development.[4] \nHence\, we developed two microfluidic tumor models\, which we used to model and characterize different aspects of the TME. TME was characterized in terms of hypoxia\, proliferation rates\, reactive oxygen species concentration\, apoptosis rate and glucose uptake.[5] Moreover\, the influence of tumor cells on an endothelium was investigated. Furthermore\, we carried out pharmacodynamic and drug efficiency studies in these newly-established models. Thereafter\, we developed a simple enzymatic protocol to extract cells seeded in 3D from the microfluidic devices. Cells could be sorted by flow cytometry according to the expression of specific surface markers or by using different fluorescent stains. RNA was extracted for downstream quantification and gene profiling was carried out for the mentioned aspects of the tumor microenvironment. \nAll in all\, we developed two easy-to-use microfluidic models for personalized medicine capable of comprehensive reproduction of the TME\, which allows characterization of tumor signatures by means of microscopy and traditional benchtop methods. \n\nBalkwill FR\, Capasso M\, Hagemann T (2012) The tumor microenvironment at a glance. J Cell Sci 125: 5591-5596.\nKlemm F\, Joyce JA (2015) Microenvironmental regulation of therapeutic response in cancer. Trends Cell Biol 25: 198-213.\nSackmann EK\, Fulton AL\, Beebe DJ (2014) The present and future role of microfluidics in biomedical research. Nature 507: 181-189.\nDu G\, Fang Q\, den Toonder JMJ (2016) Microfluidics for cell-based high throughput screening platforms—A review. Analytica Chimica Acta 903: 36-50.\nAyuso JM\, Virumbrales-Munoz M\, Lacueva A\, Lanuza PM\, Checa-Chavarria E\, et al. (2016) Development and characterization of a microfluidic model of the tumour microenvironment. Sci Rep 6: 36086.\n\n 
URL:https://ibecbarcelona.eu/event/ibec-seminar-maria-virumbrales/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170306T120000
DTEND;TZID=Europe/Madrid:20170306T130000
DTSTAMP:20260405T204912
CREATED:20170222T083846Z
LAST-MODIFIED:20170222T083846Z
UID:96001-1488801600-1488805200@ibecbarcelona.eu
SUMMARY:IBEC Seminar: David Cahen
DESCRIPTION:Electron Transport across Peptides and Proteins\nProf. David Cahen\, Weizmann Institute of Science\nElectron transport (ETp)\, i.e.\, electronic conduction across peptides and proteins in a solid state–like configuration is surprisingly efficient\, and comparable to\, or at times even more efficient than via completely conjugated molecules of comparable length. Working with modified proteins and with homopeptides we find both cofactors and secondary structure to matter for ETp efficiency. An open question is if contact to the external world is the dominant factor\, or intra-protein transport. This is important\, also for electron transfer\, ET: nature regulates ET via redox chemistry\, i.e.\, injection and extraction of electrons; this is where ET and ETp are related\, because the analog in the latter is the coupling to the electrodes. In ET control over the process is achieved at the free energy price of a redox event\, but no redox process is required for ETp. This allows studying ETp via non-redox proteins\, such as rhodopsins or albumins (“dopable” proteins)\, pointing to peptides as efficient transport media; studying transport via\, including coupling to them\, can help to learn about protein ETp.
URL:https://ibecbarcelona.eu/event/ibec-seminar-david-cahen-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170306T120000
DTEND;TZID=Europe/Madrid:20170306T130000
DTSTAMP:20260405T204912
CREATED:20170222T083846Z
LAST-MODIFIED:20170303T081702Z
UID:27719-1488801600-1488805200@ibecbarcelona.eu
SUMMARY:IBEC Seminar: David Cahen
DESCRIPTION:Electron Transport across Peptides and Proteins\nProf. David Cahen\, Weizmann Institute of Science\nElectron transport (ETp)\, i.e.\, electronic conduction across peptides and proteins in a solid state–like configuration is surprisingly efficient\, and comparable to\, or at times even more efficient than via completely conjugated molecules of comparable length. Working with modified proteins and with homopeptides we find both cofactors and secondary structure to matter for ETp efficiency. An open question is if contact to the external world is the dominant factor\, or intra-protein transport. This is important\, also for electron transfer\, ET: nature regulates ET via redox chemistry\, i.e.\, injection and extraction of electrons; this is where ET and ETp are related\, because the analog in the latter is the coupling to the electrodes. In ET control over the process is achieved at the free energy price of a redox event\, but no redox process is required for ETp. This allows studying ETp via non-redox proteins\, such as rhodopsins or albumins (“dopable” proteins)\, pointing to peptides as efficient transport media; studying transport via\, including coupling to them\, can help to learn about protein ETp.
URL:https://ibecbarcelona.eu/event/ibec-seminar-david-cahen/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170329T120000
DTEND;TZID=Europe/Madrid:20170329T130000
DTSTAMP:20260405T204912
CREATED:20170308T135727Z
LAST-MODIFIED:20170308T135727Z
UID:28031-1490788800-1490792400@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Aranzazu Villasante
DESCRIPTION:Cancer Engineering: Strategies to Engineer Predictable Tumor Models\nDr. Aranzazu Villasante\, Department of Biomedical Engineering\, Columbia University\, New York\nAlthough many drugs show promise in monolayer or in animal models systems\, most fail to translate in humans and this is because they lack of ability to replicate the human microenvironment in patients. In response to these limitations\, I have generated a set of predictable tissue-engineered (TE) models of cancer by using different strategies. Today\, I am going to focus on some of these approaches to engineer pediatric tumors in vitro. Firstly\, I will show a TE model of Ewing’s sarcoma (ES) within its bone niche. This particular strategy is based on engineered human bone by introducing osteoclasts in co-culture with osteoblasts in the 3-dimensional bone niche. This model mimics bone remodeling and recapitulates some of the features observed in the osteolytic process in cancer and also\, the effects of the therapeutic reagent Zoledronic acid observed in patients. The second strategy consists in designing biomaterials with the same tumor composition to mimic the biological and mechanical properties of tumors from patients. I have developed 3D porous collagen 1-hyaluronic acid scaffolds (Col1-HA scaffolds) for studies of tumor derivedexosomes\, which are known to be initiators of pre-metastatic niche formation in certain sites. Interestingly\, I found high levels of a critical mediator of ES growth and metastasis (EZH2) in exosomes isolated from both patients and TE model of ES. Alternatively\, we cultured TE models based on Col1-HA scaffolds into a mechanical loading bioreactor for better mimicking biomechanical forces in ES. We found that biomechanical stimuli modulate osteolytic-related proteins (i.e. RUNX2) and sensitivity to anticancer drugs\, such as Sorafenib. I will also explain the use of perfusion bioreactors and cell sheet engineering to develop a novel model of Neuroblastoma (NB) to study the effect of consolidative drugs\, such as Isotretinoin\, on tumor vasculature and stem-like cells. Here\, I will show the existence of sub-populations of NB cells with different levels of stemness properties; these levels are related to the capacity of stem-like cells to transdifferentiate and also\, to chemoresistance and relapse. Finally\, the take-home message of my talk will be that TE models can bridge the gap between 2D in vitro cultures and in vivo animal models in a predictive\, inexpensive and low timeconsuming fashion for successfully understand cancer biology and improve cancer treatments.
URL:https://ibecbarcelona.eu/event/ibec-seminar-aranzazu-villasante/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170329T120000
DTEND;TZID=Europe/Madrid:20170329T130000
DTSTAMP:20260405T204912
CREATED:20170308T135727Z
LAST-MODIFIED:20170308T135727Z
UID:96007-1490788800-1490792400@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Aranzazu Villasante
DESCRIPTION:Cancer Engineering: Strategies to Engineer Predictable Tumor Models\nDr. Aranzazu Villasante\, Department of Biomedical Engineering\, Columbia University\, New York\nAlthough many drugs show promise in monolayer or in animal models systems\, most fail to translate in humans and this is because they lack of ability to replicate the human microenvironment in patients. In response to these limitations\, I have generated a set of predictable tissue-engineered (TE) models of cancer by using different strategies. Today\, I am going to focus on some of these approaches to engineer pediatric tumors in vitro. Firstly\, I will show a TE model of Ewing’s sarcoma (ES) within its bone niche. This particular strategy is based on engineered human bone by introducing osteoclasts in co-culture with osteoblasts in the 3-dimensional bone niche. This model mimics bone remodeling and recapitulates some of the features observed in the osteolytic process in cancer and also\, the effects of the therapeutic reagent Zoledronic acid observed in patients. The second strategy consists in designing biomaterials with the same tumor composition to mimic the biological and mechanical properties of tumors from patients. I have developed 3D porous collagen 1-hyaluronic acid scaffolds (Col1-HA scaffolds) for studies of tumor derivedexosomes\, which are known to be initiators of pre-metastatic niche formation in certain sites. Interestingly\, I found high levels of a critical mediator of ES growth and metastasis (EZH2) in exosomes isolated from both patients and TE model of ES. Alternatively\, we cultured TE models based on Col1-HA scaffolds into a mechanical loading bioreactor for better mimicking biomechanical forces in ES. We found that biomechanical stimuli modulate osteolytic-related proteins (i.e. RUNX2) and sensitivity to anticancer drugs\, such as Sorafenib. I will also explain the use of perfusion bioreactors and cell sheet engineering to develop a novel model of Neuroblastoma (NB) to study the effect of consolidative drugs\, such as Isotretinoin\, on tumor vasculature and stem-like cells. Here\, I will show the existence of sub-populations of NB cells with different levels of stemness properties; these levels are related to the capacity of stem-like cells to transdifferentiate and also\, to chemoresistance and relapse. Finally\, the take-home message of my talk will be that TE models can bridge the gap between 2D in vitro cultures and in vivo animal models in a predictive\, inexpensive and low timeconsuming fashion for successfully understand cancer biology and improve cancer treatments.
URL:https://ibecbarcelona.eu/event/ibec-seminar-aranzazu-villasante-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170519T100000
DTEND;TZID=Europe/Madrid:20170519T110000
DTSTAMP:20260405T204912
CREATED:20170425T125954Z
LAST-MODIFIED:20170425T125954Z
UID:96045-1495188000-1495191600@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Verena Ruprecht
DESCRIPTION:Tuning cell and tissue dynamics by the biomechanical microenvironment\nDr. Verena Ruprecht\, Cell & Developmental Biology program\, CRG\, Barcelona (Spain)\nResearch in our lab is focused on the control of cell and tissue dynamics in 3D environments. We study how single cells process multifactorial mechanochemical information from their surrounding and generate adaptive output dynamics such as shape change\, cell polarization and migration that collectively impact on tissue development and morphogenesis. We use Zebrafish embryos and primary embryonic progenitor stem cells as a model system to study molecular and cellular mechanisms driving complex three-dimensional tissue rearrangements and patterning in the embryo. Our lab follows a highly interdisciplinary approach combining molecular and cell biological tools with quantitative imaging approaches and advanced fluorescence microscopy. We implement a dual experiment strategy of in vivo experiments and minimalistic in vitro culture assays that allow for reconstituting the complexity of tissue morphogenesis in simplified environments.\nIn this talk I will specifically focus on how the  3D cellular microenvironment modulates cytoskeletal dynamics and motile cell behaviour and how a combination of physics and biology can help to elucidate generic patterns in cell motility.
URL:https://ibecbarcelona.eu/event/ibec-seminar-verena-ruprecht-2/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170519T100000
DTEND;TZID=Europe/Madrid:20170519T110000
DTSTAMP:20260405T204912
CREATED:20170425T125954Z
LAST-MODIFIED:20170425T125954Z
UID:28878-1495188000-1495191600@ibecbarcelona.eu
SUMMARY:IBEC Seminar: Verena Ruprecht
DESCRIPTION:Tuning cell and tissue dynamics by the biomechanical microenvironment\nDr. Verena Ruprecht\, Cell & Developmental Biology program\, CRG\, Barcelona (Spain)\nResearch in our lab is focused on the control of cell and tissue dynamics in 3D environments. We study how single cells process multifactorial mechanochemical information from their surrounding and generate adaptive output dynamics such as shape change\, cell polarization and migration that collectively impact on tissue development and morphogenesis. We use Zebrafish embryos and primary embryonic progenitor stem cells as a model system to study molecular and cellular mechanisms driving complex three-dimensional tissue rearrangements and patterning in the embryo. Our lab follows a highly interdisciplinary approach combining molecular and cell biological tools with quantitative imaging approaches and advanced fluorescence microscopy. We implement a dual experiment strategy of in vivo experiments and minimalistic in vitro culture assays that allow for reconstituting the complexity of tissue morphogenesis in simplified environments.\nIn this talk I will specifically focus on how the  3D cellular microenvironment modulates cytoskeletal dynamics and motile cell behaviour and how a combination of physics and biology can help to elucidate generic patterns in cell motility.
URL:https://ibecbarcelona.eu/event/ibec-seminar-verena-ruprecht/
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170602T100000
DTEND;TZID=Europe/Madrid:20170602T110000
DTSTAMP:20260405T204912
CREATED:20170529T132500Z
LAST-MODIFIED:20170529T132500Z
UID:96068-1496397600-1496401200@ibecbarcelona.eu
SUMMARY:IBEC Seminar:  Esteve Trias & Oscar Fariñas\, BTB
DESCRIPTION:Research challenges of the Barcelona Tissue Bank\n Esteve Trias\, Oscar Fariñas – Barcelona Tissue Bank (Banc de Sang I Teixits)\nThe Barcelona Tissue Bank (BTB) is a multi-tissue bank which belongs to the Banc de Sang i Teixits (BST)\, a public company of the Department of Health of the Generalitat de Catalunya\, whose mission is to ensure the supply and proper use of blood and Tissue in Catalonia.\nThe BTB controls the entire process of donation and transplantation globally\, from the process of detection and evaluation of the potential donor\, obtention or extraction\, processing of the different tissues\, storage and distribution until transplantation.\nIn the BTB we can distinguish five major banks: ocular\, cardiovascular\, skin\, musculoskeletal and reproductive.\nMusculoskeletal tissue bank represents 50% of the activity of BTB\, covering approximately 85% of transplanted tissue in the Spanish state. Different types of tissues are processed through a decontamination process to ensure maximum security. The purpose of the great variety of processed tissues is to meet the different needs of surgeons\, being the most common ligament reconstruction\, filling bone defects\, tumour surgery and meniscal transplantation.\nResearch\, development and innovation of new products and processes are constant priorities to provide the best solution for patients by setting up different lines of R & D in the short\, medium and long term.
URL:https://ibecbarcelona.eu/event/seminario-de-id-del-banc-de-sang-i-teixits-bst-2/
LOCATION:IBEC\, floor 11\, Tower I\, Baldiri Reixac 4-8\, 08028 Barcelona\, Spain
CATEGORIES:IBEC Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20170602T100000
DTEND;TZID=Europe/Madrid:20170602T110000
DTSTAMP:20260405T204912
CREATED:20170529T132500Z
LAST-MODIFIED:20170530T125041Z
UID:29677-1496397600-1496401200@ibecbarcelona.eu
SUMMARY:IBEC Seminar:  Esteve Trias & Oscar Fariñas\, BTB
DESCRIPTION:Research challenges of the Barcelona Tissue Bank\n Esteve Trias\, Oscar Fariñas – Barcelona Tissue Bank (Banc de Sang I Teixits)\nThe Barcelona Tissue Bank (BTB) is a multi-tissue bank which belongs to the Banc de Sang i Teixits (BST)\, a public company of the Department of Health of the Generalitat de Catalunya\, whose mission is to ensure the supply and proper use of blood and Tissue in Catalonia.\nThe BTB controls the entire process of donation and transplantation globally\, from the process of detection and evaluation of the potential donor\, obtention or extraction\, processing of the different tissues\, storage and distribution until transplantation.\nIn the BTB we can distinguish five major banks: ocular\, cardiovascular\, skin\, musculoskeletal and reproductive.\nMusculoskeletal tissue bank represents 50% of the activity of BTB\, covering approximately 85% of transplanted tissue in the Spanish state. Different types of tissues are processed through a decontamination process to ensure maximum security. The purpose of the great variety of processed tissues is to meet the different needs of surgeons\, being the most common ligament reconstruction\, filling bone defects\, tumour surgery and meniscal transplantation.\nResearch\, development and innovation of new products and processes are constant priorities to provide the best solution for patients by setting up different lines of R & D in the short\, medium and long term.
URL:https://ibecbarcelona.eu/event/seminario-de-id-del-banc-de-sang-i-teixits-bst/
LOCATION:IBEC\, floor 11\, Tower I\, Baldiri Reixac 4-8\, 08028 Barcelona\, Spain
CATEGORIES:IBEC Seminar
END:VEVENT
END:VCALENDAR