{"id":37503,"date":"2011-07-28T00:00:00","date_gmt":"2011-07-27T23:00:00","guid":{"rendered":"http:\/\/www.pcb.ub.edu\/\/sobre-alas-compartimentos-y-eslabones-perdidos\/"},"modified":"2020-11-16T16:16:35","modified_gmt":"2020-11-16T15:16:35","slug":"sobre-alas-compartimentos-y-eslabones-perdidos","status":"publish","type":"post","link":"https:\/\/www.pcb.ub.edu\/es\/sobre-alas-compartimentos-y-eslabones-perdidos\/","title":{"rendered":"Sobre alas, compartimentos y eslabones perdidos"},"content":{"rendered":"<p>\u00bb<\/p>\n<div class=\"col-sm-6 detall-noticia-imatges\">\n<div class=\"row\">\n<div class=\"item active one-image\">\n\t\t\t\t\t\t<a class=\"icon-search\" href='http:\/\/www.pcb.ub.edu\/\/wp-content\/uploads\/2020\/11\/1314709696336.jpg'><\/a><br \/>\n\t\t\t\t\t\t<img src='http:\/\/www.pcb.ub.edu\/\/wp-content\/uploads\/2020\/11\/1314709696336.jpg' \/>\n\t\t\t\t\t<\/div><\/div><\/div>\n<p>\t\t\tLas barreras f\u00edsicas impiden los movimientos de las c\u00e9lulas entre poblaciones adyacentes, restringi\u00e9ndolas por tanto a compartimentos espec\u00edficos. En organismos multicelulares, desde el sistema nervioso central en vertebrados hasta el ala de Drosophila, la compartimentalizaci\u00f3n es esencial para el desarrollo. Pero, \u00bfc\u00f3mo pueden mantenerse estables estos bordes que separan poblaciones formadas por miles de c\u00e9lulas?.  <\/p>\n<p> Hasta hoy, exist\u00edan dos hip\u00f3tesis de trabajo que intentaban explicar la formaci\u00f3n y el mantenimiento de los bordes entre compartimentos: una basada en las diferencias de afinidad generadas por las diferentes mol\u00e9culas de adhesi\u00f3n en cada poblaci\u00f3n celular, y la otra que reivindica la importancia del citoesqueleto en las c\u00e9lulas del borde, necesario para crear la tensi\u00f3n f\u00edsica que separa las distintas poblaciones celulares. <\/p>\n<p> El estudio realizado por el Laboratorio de Desarrollo y Control del Crecimiento del IRB Barcelona ha conseguido reconciliar estas dos hip\u00f3tesis al encontrar el eslab\u00f3n perdido entre la v\u00eda de se\u00f1alizaci\u00f3n de Notch y la formaci\u00f3n del borde DV. Mediante la represi\u00f3n del microRNA bentam en las dos poblaciones celulares situadas a ambos lados del borde del ala, Notch permite que el regulador de actina Enabled se exprese con normalidad. En estas c\u00e9lulas, Enabled induce la elongaci\u00f3n del citoesqueleto a lo largo de la parte de la membrana celular que delimita el compartimento, creando una tensi\u00f3n que contribuye la formaci\u00f3n del borde DV. bentam se convierte as\u00ed en el nuevo actor molecular que regula la compartimentalizaci\u00f3n del ala de Drosophila.  <\/p>\n<p> <a>M\u00e1s informaci\u00f3n<\/a>  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>La revista Development ha publicado el \u00faltimo trabajo del Laboratorio de Desarrollo y Control del Crecimiento, liderado por marco Mil\u00e1n, profesor de investigaci\u00f3n ICREA del IRB Barcelona \u2013con sede en el Parc Cient\u00edfic Barcelona\u2013 que puede tener tener implicaciones relevantes en el control de crecimiento y la tumorog\u00e9nesis. En colaboraci\u00f3n con Stephen Cohen de la National University of Singapore, los investigadores han revelado c\u00f3mo la represi\u00f3n de un \u00fanico microRNA (miRNA), bentam, contribuye a la formaci\u00f3n de los bordes entre compartimentos en el primordio de ala de Drosophila.  <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[9],"tags":[],"class_list":["post-37503","post","type-post","status-publish","format-standard","category-sin-categorizar"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sobre alas, compartimentos y eslabones perdidos - Parc Cient\u00edfic de Barcelona<\/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:\/\/www.pcb.ub.edu\/es\/sobre-alas-compartimentos-y-eslabones-perdidos\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sobre alas, compartimentos y eslabones perdidos - Parc Cient\u00edfic de Barcelona\" \/>\n<meta property=\"og:description\" content=\"La revista Development ha publicado el \u00faltimo trabajo del Laboratorio de Desarrollo y Control del Crecimiento, liderado por marco Mil\u00e1n, profesor de investigaci\u00f3n ICREA del IRB Barcelona \u2013con sede en el Parc Cient\u00edfic Barcelona\u2013 que puede tener tener implicaciones relevantes en el control de crecimiento y la tumorog\u00e9nesis. 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