
{"id":6328,"date":"2012-03-22T16:18:59","date_gmt":"2012-03-22T16:18:59","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/new\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\/"},"modified":"2015-01-08T16:09:24","modified_gmt":"2015-01-08T16:09:24","slug":"la-prova-del-matalas-les-celmlules-tambe-ho-fan","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/ca\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\/","title":{"rendered":"La prova del matal\u00e0s: les c\u00e8l\u00b7lules tamb\u00e9 ho fan"},"content":{"rendered":"<p class=\"caption\">\u00a0<\/p>\n<p class=\"caption\">A cell spreading on the nanometric pillars<\/p>\n<p>\u00a0<\/p>\n<p> En un article publicat a PNAS aquesta setmana, investigadors de l\u2019Institut de Bioenginyeria de Catalunya (IBEC) a Barcelona han descobert un mecanisme crucial pel qual les c\u00e8l\u00b7lules exploren el seu medi, que els ha apropat un pas m\u00e9s a entendre com interactuen amb el que les envolta. Aquesta troballa obre portes a poder predir o controlar el comportament cel\u00b7lular.<\/p>\n<p>\u201cCom una c\u00e8l\u00b7lula pot mesurar la rigidesa del seu entorn ha estat un misteri des de fa molt de temps,\u201d explica en Pere Roca-Cusachs, investigador s\u00e8nior al grup de Biomec\u00e0nica Cel\u00b7lular i Respirat\u00f2ria de l\u2019IBEC, que va dur a terme la recerca amb col\u00b7laboradors dels EUA. \u201cExerceix una for\u00e7a determinada sobre el seu medi, i aleshores mesura quant es mou, com una persona fa bots sobre un llit per veure com cedeix? O b\u00e9 aplica una determinada distorsi\u00f3, i aleshores mesura quanta for\u00e7a cal? A m\u00e9s, la mesura la fa la c\u00e8l\u00b7lula com un tot, o t\u00e9 m\u00faltiples sensors en miniatura que comproven la rigidesa en diferents punts?\u201d<\/p>\n<p>Per respondre aquestes preguntes, els cient\u00edfics van col\u00b7locar c\u00e8l\u00b7lules sobre un llit de pilars nanom\u00e8trics flexibles. \u201cSeguint el moviment d\u2019aquests pilars, vam ser capa\u00e7os de tra\u00e7ar un mapa de com les c\u00e8l\u00b7lules exerceixen forces en el seu medi amb una resoluci\u00f3 mai abans obtinguda,\u201d explica en Pere. \u201cFent servir aquesta t\u00e8cnica, vam descobrir que el sensor de rigidesa de les c\u00e8l\u00b7lules \u00e9s un petit complex de no m\u00e9s d\u2019un micr\u00f2metre (1\/1.000 de mil\u00b7l\u00edmetre) de llarg.\u201d Els investigadors tamb\u00e9 van veure que la c\u00e8l\u00b7lula posseeix m\u00faltiples c\u00f2pies d\u2019aquest complex, i que totes apliquen un despla\u00e7ament constant de 60 nan\u00f2metres \u2013 menys d\u20191\/10.000 de mil\u00b7l\u00edmetre. Els sensors mesuren aleshores la for\u00e7a aplicada per deduir la rigidesa del medi.<\/p>\n<p>\u201cAquestes troballes representen un pas molt important envers la comprensi\u00f3 de com les c\u00e8l\u00b7lules interactuen amb el seu medi, un coneixement crucial per a fabricar \u00f2rgans com pulmons o cors in vitro o tractar malalties com el c\u00e0ncer,\u201d diu en Pere. <\/p>\n<p>\u00a0<\/p>\n<p>Ghassemi, S., Meacci, G., Liu, S., Gondarenko, A.A., Mathur, A., Roca-Cusachs, P., Sheetz, M.P., and Hone, J. (2012). Cells test substrate rigidity by local contractions on sub-micrometer pillars. PNAS, in press.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img decoding=\"async\" class=\"left size-full wp-image-6324 lazyload\" data-src=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2012\/03\/pere_cell.jpg\" border=\"0\" width=\"329\" height=\"284\" data-srcset=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2012\/03\/pere_cell.jpg 329w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2012\/03\/pere_cell-300x258.jpg 300w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2012\/03\/pere_cell-173x150.jpg 173w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2012\/03\/pere_cell-150x129.jpg 150w\" data-sizes=\"(max-width: 329px) 100vw, 329px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 329px; --smush-placeholder-aspect-ratio: 329\/284;\" \/><\/p>\n<p>Igual que les persones s\u00f3n exigents a l\u2019hora de triar el matal\u00e0s sobre el que volen dormir \u2013 que no sigui massa dur, per\u00f2 tampoc massa tou \u2013 les c\u00e8l\u00b7lules tamb\u00e9 ho s\u00f3n. De fet, la rigidesa de l\u2019entorn cel\u00b7lular \u00e9s tan important que pot determinar si una c\u00e8l\u00b7lula mare es diferenciar\u00e0 en os o greix, per exemple \u2013 o si una c\u00e8l\u00b7lula es comportar\u00e0 normalment o es tornar\u00e0 cancerosa.<\/p>\n","protected":false},"author":4,"featured_media":6324,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96],"tags":[],"post_formats":[],"class_list":["post-6328","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies-de-recerca"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La prova del matal\u00e0s: les c\u00e8l\u00b7lules tamb\u00e9 ho fan - 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\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La prova del matal\u00e0s: les c\u00e8l\u00b7lules tamb\u00e9 ho fan - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Igual que les persones s\u00f3n exigents a l\u2019hora de triar el matal\u00e0s sobre el que volen dormir \u2013 que no sigui massa dur, per\u00f2 tampoc massa tou \u2013 les c\u00e8l\u00b7lules tamb\u00e9 ho s\u00f3n. De fet, la rigidesa de l\u2019entorn cel\u00b7lular \u00e9s tan important que pot determinar si una c\u00e8l\u00b7lula mare es diferenciar\u00e0 en os o greix, per exemple \u2013 o si una c\u00e8l\u00b7lula es comportar\u00e0 normalment o es tornar\u00e0 cancerosa.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ibecbarcelona.eu\/ca\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"article:published_time\" content=\"2012-03-22T16:18:59+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-01-08T16:09:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2012\/03\/pere_cell.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"329\" \/>\n\t<meta property=\"og:image:height\" content=\"284\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u00c0ngels L\u00f3pez\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrit per\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u00c0ngels L\u00f3pez\" \/>\n\t<meta name=\"twitter:label2\" content=\"Temps estimat de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuts\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\\\/\"},\"author\":{\"name\":\"\u00c0ngels L\u00f3pez\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#\\\/schema\\\/person\\\/c212c6b589546130be67986b9290e2b8\"},\"headline\":\"La prova del matal\u00e0s: les c\u00e8l\u00b7lules tamb\u00e9 ho fan\",\"datePublished\":\"2012-03-22T16:18:59+00:00\",\"dateModified\":\"2015-01-08T16:09:24+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\\\/\"},\"wordCount\":422,\"publisher\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ibecbarcelona.eu\\\/wp-content\\\/uploads\\\/2012\\\/03\\\/pere_cell.jpg\",\"articleSection\":[\"Not\u00edcies de recerca\"],\"inLanguage\":\"ca\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\\\/\",\"url\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/la-prova-del-matalas-les-celmlules-tambe-ho-fan\\\/\",\"name\":\"La prova del matal\u00e0s: les c\u00e8l\u00b7lules tamb\u00e9 ho fan - 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