{"id":56754,"date":"2017-12-11T09:33:55","date_gmt":"2017-12-11T08:33:55","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/cells-feel-their-environment-to-explore-it\/"},"modified":"2017-12-11T09:41:36","modified_gmt":"2017-12-11T08:41:36","slug":"cells-feel-their-environment-to-explore-it","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/ca\/cells-feel-their-environment-to-explore-it\/","title":{"rendered":"Les c\u00e8l\u00b7lules temptegen el seu entorn per explorar-ho"},"content":{"rendered":"

\u201cD\u2019alguna manera, seria equivalent a recon\u00e8ixer la cara d\u2019alg\u00fa a les fosques resseguint-la amb una m\u00e0, m\u00e9s que veient la persona\u201d.<\/p>\n

La interacci\u00f3 entre c\u00e8l\u00b7lules i els seus lligands (o microentorn cel\u00b7lular) \u00e9s essencial per mantenir la funci\u00f3 de qualsevol teixit, i de fet la detecci\u00f3 de canvis en l\u2019entorn cel\u00b7lular \u00e9s fonamental en tot escenari en que hi hagi una remodelaci\u00f3 de teixit, com pot ser el desenvolupament embrionari, la proliferaci\u00f3 tumoral o el proc\u00e9s en el qual es tanca una ferida.<\/p>\n

En el treball tamb\u00e9 s\u2019ha vist com, \u201cen funci\u00f3 d\u2019aquesta distribuci\u00f3 de forces de la c\u00e8l\u00b7lula s\u2019incideix en l\u2019activaci\u00f3 de la transcripci\u00f3 gen\u00e8tica, fenomen que determina quins gens s\u2019expressen\u201d, apunta Roger Oria, primer autor de l\u2019estudi i estudiant de doctorat al laboratori del Pere.<\/p>\n

Amb aquest coneixement m\u00e9s integrat de com la c\u00e8l\u00b7lula detecta el seu entorn, els investigadors han comprovat que modificant les condicions de l\u2019entorn de la c\u00e8l\u00b7lula (rigidesa i distribuci\u00f3 dels lligands que formen la matriu extracel\u00b7lular) es pot controlar la resposta d\u2019adher\u00e8ncia de la c\u00e8l\u00b7lula i, fins i tot, definir un rang en el qual la c\u00e8l\u00b7lula s\u2019adhereix i fora del qual no ho fa. Aquest resultat, apunta Pere, pot ser especialment rellevant en processos tumorals, donat que est\u00e0 for\u00e7a acceptat que una major rigidesa est\u00e0 relacionada amb una major activaci\u00f3 dels oncogens.<\/p>\n

Fins ara se sabia que les c\u00e8l\u00b7lules eren capaces de percebre informaci\u00f3 espacial i f\u00edsica a la nanoescala.\u00a0 De fet, es pensava que eren capaces de \u201cmesurar dist\u00e0ncies\u201d i per aix\u00f2 s\u2019havia hipotetitzat amb l\u2019exist\u00e8ncia d\u2019algun tipus de mol\u00e8cula patr\u00f3 que les ajud\u00e9s en aquest proc\u00e9s. Aquest treball \u201ccontradiu\u201d aquesta hip\u00f2tesi afirma l\u2019investigador IBEC-UB, demostrant que les c\u00e8l\u00b7lules temptegen m\u00e9s que veuen el seu entorn.<\/p>\n

Per dur a terme el treball, els investigadors han desenvolupat uns substrats de gels tous en els quals s\u2019incorpora un patr\u00f3 de nanoesferes d\u2019or recobertes d\u2019una prote\u00efna i de les quals en poden controlar la seva separaci\u00f3. La c\u00e8l\u00b7lula reconeix aquestes nanoesferes com a un lligand i per tant es pot mesurar de quina manera les c\u00e8l\u00b7lules modulen la distribuci\u00f3 de forces i el nombre de lligands als quals s\u2019adhereixen en funci\u00f3 de la densitat.<\/p>\n

En aquest treball han col\u00b7laborat, entre altres, el Institut d\u2019Investigaci\u00f3 en Enginyeria d\u2019Arag\u00f3, de la Universitat de Zaragoza, l\u2019Institut Max Planck i la Universitat Heidelberg d\u2019Alemanya.<\/p>\n

Aquest treball ha estat finan\u00e7at per la Comissi\u00f3 Europea, el Ministeri d\u2019Economia i Competitivitat d\u2019Espa\u00f1a, la Generalitat de Catalunya, el Consell Europeu de Recerca, la Fundaci\u00f3 Banc\u00e0ria \u201cLa Caixa\u201d, la Fundaci\u00f3 la Marat\u00f3 de Tv3 i la Fundaci\u00f3 Alemanya de Ci\u00e8ncies.<\/p>\n

—<\/p>\n

Article citation:<\/strong>
\n<\/em>Oria R, Wiegand T, Escribano J, Elosegui-Artola A, Uriarte JJ, Moreno-Pulido C, Platzman I, Delcanale P, Albertazzi L, Navajas D, Trepat X, Garc\u00eda-Aznar JM, Cavalcanti-Adam EA, Roca-Cusachs P. (2017). Force loading explains spatial sensing of ligands by cells<\/a>. Nature<\/em>, epub ahead of print<\/p>\n","protected":false},"excerpt":{"rendered":"

\"\"<\/a>El proc\u00e9s mitjan\u00e7ant el qual les c\u00e8l\u00b7lules s\u00f3n capaces de percebre el seu entorn est\u00e0 regulat per la detecci\u00f3 de forces. Aquesta \u00e9s la principal conclusi\u00f3 d\u2019un estudi publicat a la revista Nature<\/em> liderat per l\u2019equip de Pere Roca-Cusachs, investigador principal a l\u2019IBEC i professor a la UB, i que ha estat impulsat per la Fundaci\u00f3 Banc\u00e0ria \u201cla Caixa\u201d. <\/h3>\n

\u201cEn la recerca hem determinat com les c\u00e8l\u00b7lules detecten la posici\u00f3 de les mol\u00e8cules (o lligands) del seu entorn, amb precisi\u00f3 nanom\u00e8trica\u201d, explica Pere. \u201cEn adherir-se als seus lligands, les c\u00e8l\u00b7lules hi apliquen una for\u00e7a que poden detectar. Com que aquesta for\u00e7a dep\u00e8n de la distribuci\u00f3 espacial dels lligands, aix\u00f2 permet a les c\u00e8l\u00b7lules temptejar el seu entorn. <\/p>\n","protected":false},"author":4,"featured_media":56751,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96],"tags":[],"post_formats":[],"class_list":["post-56754","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies-de-recerca"],"yoast_head":"\nLes c\u00e8l\u00b7lules temptegen el seu entorn per explorar-ho - Institute for Bioengineering of Catalonia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ibecbarcelona.eu\/ca\/cells-feel-their-environment-to-explore-it\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les c\u00e8l\u00b7lules temptegen el seu entorn per explorar-ho - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"El proc\u00e9s mitjan\u00e7ant el qual les c\u00e8l\u00b7lules s\u00f3n capaces de percebre el seu entorn est\u00e0 regulat per la detecci\u00f3 de forces. Aquesta \u00e9s la principal conclusi\u00f3 d\u2019un estudi publicat a la revista Nature liderat per l\u2019equip de Pere Roca-Cusachs, investigador principal a l\u2019IBEC i professor a la UB, i que ha estat impulsat per la Fundaci\u00f3 Banc\u00e0ria \u201cla Caixa\u201d. \u201cEn la recerca hem determinat com les c\u00e8l\u00b7lules detecten la posici\u00f3 de les mol\u00e8cules (o lligands) del seu entorn, amb precisi\u00f3 nanom\u00e8trica\u201d, explica Pere. \u201cEn adherir-se als seus lligands, les c\u00e8l\u00b7lules hi apliquen una for\u00e7a que poden detectar. 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