{"id":23244,"date":"2016-06-03T15:54:08","date_gmt":"2016-06-03T15:54:08","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/?p=23244"},"modified":"2016-06-10T09:55:31","modified_gmt":"2016-06-10T09:55:31","slug":"investigadores-logran-rastrear-celulas-en-tejidos-profundos","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/es\/investigadores-logran-rastrear-celulas-en-tejidos-profundos\/","title":{"rendered":"Investigadores logran rastrear c\u00e9lulas en tejidos profundos"},"content":{"rendered":"
\"CorazonImagen: Coraz\u00f3n de pez cebra adulto, en verde la descendencia de las c\u00e9lulas marcadas (izquierda). Ampliaci\u00f3n de la zona marcada, mostrando c\u00e9lulas card\u00edacas fotoactivadas en verde, entremezcladas con c\u00e9lulas sin marcar (derecha).<\/h6>\n

La manipulaci\u00f3n de la expresi\u00f3n de prote\u00ednas para hacer un seguimiento del comportamiento celular es una potente herramienta en el campo de la biolog\u00eda. Hasta ahora, la expresi\u00f3n de prote\u00ednas en c\u00e9lulas seleccionadas se activaba mediante 2 fotones, pero su uso quedaba limitado a c\u00e9lulas pr\u00f3ximas a la superficie debido a la elevada dispersi\u00f3n de los fotones rojos utilizados. Sin embargo, para investigar los \u00f3rganos internos durante el desarrollo es necesario, no solo mantener la viabilidad de las c\u00e9lulas marcadas, sino poder acceder a estas cuando se encuentran enmascaradas en tejidos m\u00e1s complejos o profundos.<\/p>\n

\u00abEsta innovadora t\u00e9cnica, basada en la fotoactivaci\u00f3n de tres fotones de longitud de onda m\u00e1s larga, supone una soluci\u00f3n al problema de la dispersi\u00f3n y, adem\u00e1s, es capaz de activar las prote\u00ednas que se encuentran en las c\u00e9lulas de los tejidos m\u00e1s profundos sin interferir en la esperanza de vida del animal\u00bb, comenta Dobryna Zalvidea, responsable del estudio en el Instituto de Bioingenier\u00eda de Catalunya (IBEC).<\/p>\n

Los investigadores marcaron las c\u00e9lulas musculares del coraz\u00f3n de embriones de pez cebra y descubrieron que la progenie de estas c\u00e9lulas en peces adultos estaba marcada de manera permanente sin causar ning\u00fan da\u00f1o remarcable en los tejidos. Esta metodolog\u00eda, tambi\u00e9n puede extenderse a otros tejidos y modelos animales, as\u00ed como ser de utilidad para activar, con resoluci\u00f3n espacial y temporal, la expresi\u00f3n de diferentes prote\u00ednas para controlar el comportamiento a largo plazo de c\u00e9lulas individuales o de grupos celulares in vivo<\/em>.<\/p>\n

El sistema propuesto en este estudio basado en la fotoactivaci\u00f3n utiliza un inductor inactivo encapsulado (Cre-loxP) que penetra en el interior de todo el organismo pero que solo se vuelve funcional cuando se activa mediante la luz. Una vez activado, el inductor es capaz de modificar lugares determinados del ADN de las c\u00e9lulas de las que se quiere conocer su comportamiento. De este modo, se controla la expresi\u00f3n de las prote\u00ednas y se pueden dirigir los cambios a tipos celulares espec\u00edficos utilizando \u00fanicamente un est\u00edmulo externo como desencadenante. Pero como se trata de una modificaci\u00f3n gen\u00e9tica esta persiste durante toda la vida de la c\u00e9lula y, adem\u00e1s, se transmite a toda su descendencia.<\/p>\n

Este estudio ha sido posible gracias al Mineco, al Programa I3, al ISCII\/FEDER, a AGAUR, a la Fundaci\u00f3n la Marat\u00f3 de TV3 y al Consejo Europeo de Investigaci\u00f3n (ERC).<\/p>\n

—<\/p>\n

Source article:<\/em> <\/strong>Isil Tekeli, Isabelle Aujard, Xavier Trepat, Ludovic Jullien, Angel Raya & Dobryna Zalvidea (2016) Long-term in vivo single-cell lineage tracing of Deep structures using three-photon activation<\/a>. Light: Science & applications, 5, 1-7<\/em><\/p>\n

—<\/p>\n

IBEC en los medios:<\/em><\/strong><\/p>\n

La Vanguaria, \u00abLogran activar c\u00e9lulas profundas del coraz\u00f3n sin causar da\u00f1o al organismo\u00bb
\n<\/a>El Punt Avui, \u00abActiven c\u00e8l\u00b7lules de teixits profunds amb tres fotons\u00bb
\n<\/a>Agencia SINC, \u00abLogran rastrear c\u00e9lulas en tejidos profundos\u00bb<\/a>
\nEl Economista, \u00abLogran activar c\u00e9lulas profundas del coraz\u00f3n sin casusar da\u00f1o al organismo\u00bb
\n<\/a>Noticias de la Ciencia, \u00abInvestigadores logran rastrear c\u00e9lulas en tejidos profundos\u00bb
\n<\/a>Presspeople, \u00abInvestigadores logran rastrear c\u00e9lulas en tejidos profundos\u00bb<\/a>
\nCatalunya Vanguardista, \u00abManipulaci\u00f3n gen\u00e9tica no invasiva\u00bb<\/a>
\n<\/a>Ciencia Explora, \u00abLogran rastrear c\u00e9lulas en tejidos profundos\u00bb<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Investigadores del Instituto de Bioingenier\u00eda de Catalu\u00f1a (IBEC) y sus colaboradores del Centro de Medicina Regenerativa de Barcelona (CMR[B]) han desarrollado una nueva t\u00e9cnica basada en la fotoactivaci\u00f3n (activaci\u00f3n por luz), que permite la manipulaci\u00f3n gen\u00e9tica no invasiva in vivo para la activaci\u00f3n y rastreo de c\u00e9lulas en tejidos profundos.<\/strong><\/h3>\n

El estudio, publicado en la revista Light: Science & Applications<\/em>, del grupo editorial Nature<\/em>, revela por primera vez, que la iluminaci\u00f3n con longitudes de onda m\u00e1s largas implica una menor dispersi\u00f3n de los fotones que viajan a trav\u00e9s de los tejidos. <\/p>\n","protected":false},"author":4,"featured_media":23245,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[167,163,165,168,166,164],"post_formats":[],"class_list":["post-23244","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-de-investigacion","tag-dobryna-zalvidea","tag-fotoactivacion","tag-fotones","tag-isil-tekeli","tag-light-science-aplications","tag-rastreo-celular"],"yoast_head":"\nInvestigadores logran rastrear c\u00e9lulas en tejidos profundos - 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\/es\/investigadores-logran-rastrear-celulas-en-tejidos-profundos\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Investigadores logran rastrear c\u00e9lulas en tejidos profundos - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Investigadores del Instituto de Bioingenier\u00eda de Catalu\u00f1a (IBEC) y sus colaboradores del Centro de Medicina Regenerativa de Barcelona (CMR[B]) han desarrollado una nueva t\u00e9cnica basada en la fotoactivaci\u00f3n (activaci\u00f3n por luz), que permite la manipulaci\u00f3n gen\u00e9tica no invasiva in vivo para la activaci\u00f3n y rastreo de c\u00e9lulas en tejidos profundos. 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