{"id":153100,"date":"2013-08-26T00:00:00","date_gmt":"2013-08-26T00:00:00","guid":{"rendered":"https:\/\/v2.optiknow.ca\/la-retine-dechiffree\/"},"modified":"2013-08-26T00:00:00","modified_gmt":"2013-08-26T00:00:00","slug":"la-retine-dechiffree","status":"publish","type":"post","link":"https:\/\/v2.optiknow.ca\/fr\/2013\/08\/26\/la-retine-dechiffree\/","title":{"rendered":"La r\u00e9tine d\u00e9chiffr\u00e9e"},"content":{"rendered":"<p>\u00a0<\/p>\n<p>Des chercheurs am\u00e9ricains ont publi\u00e9 la plus compl\u00e8te description \u00e0 ce jour des g\u00e8nes exprim\u00e9s dans la r\u00e9tine humaine. Avec \u00e0 la cl\u00e9, quelques surprises\u0085<\/p>\n<p>\u00a0<\/p>\n<p>En utilisant la technique du s\u00e9quen\u00e7age \u00e0 ARN, les chercheurs du Massachusetts Eye and Ear et de la Harvard Medical School ont d\u00e9montr\u00e9 que la majorit\u00e9 des quelque 20 000 g\u00e8nes du corps humain sont exprim\u00e9s dans la r\u00e9tine. Un r\u00e9sultat qui n'a pas surpris la communaut\u00e9 scientifique, bien au fait de la complexit\u00e9 du tissu r\u00e9tinien, compos\u00e9 de 60 types de cellules.<\/p>\n<p>\u00a0<\/p>\n<p>Toutefois, la d\u00e9couverte de 30 000 nouveaux exons et de plus de 100 nouveaux g\u00e8nes potentiels jamais identifi\u00e9s auparavant a fait bondir les chercheurs. Les exons sont la portion du g\u00e9nome utilis\u00e9e pour encoder les prot\u00e9ines et d'autres \u00e9l\u00e9ments g\u00e9n\u00e9tiques. Plusieurs milliers des nouveaux exons d\u00e9couverts dans cette recherche semblent destin\u00e9s \u00e0 servir sp\u00e9cifiquement dans la r\u00e9tine.<\/p>\n<p>\u00a0<\/p>\n<p>Cette d\u00e9couverte aidera les chercheurs \u00e0 mieux comprendre le fonctionnement de la r\u00e9tine, et comment elle est affect\u00e9e par diverses maladies, comme les d\u00e9g\u00e9n\u00e9rations h\u00e9r\u00e9ditaires. Ces maladies sont caus\u00e9es par des d\u00e9fauts ou des mutations g\u00e9n\u00e9tiques. Jusqu'\u00e0 maintenant, plus de 200 g\u00e8nes li\u00e9s \u00e0 la d\u00e9g\u00e9n\u00e9ration r\u00e9tinienne ont \u00e9t\u00e9 identifi\u00e9s, mais les causes demeurent inconnues pour plus de la moiti\u00e9 des patients affect\u00e9s par ces maladies. L'identification de nouveaux exons r\u00e9tiniens pourrait venir changer cela.\u00a0<\/p>\n<p><\/p>\n<p>Sources\u00a0:<\/p>\n<p><a title=\"La r\u00e9tine d\u00e9chiffr\u00e9e \" href=\"http:\/\/www.sciencedaily.com\/releases\/2013\/07\/130718130458.htm\">http:\/\/www.sciencedaily.com\/releases\/2013\/07\/130718130458.htm<\/a>\u00a0\u00a0<\/p>\n<p>\u00a0<\/p>\n<p><a title=\"La r\u00e9tine d\u00e9chiffr\u00e9e \" href=\"http:\/\/www.biomedcentral.com\/1471-2164\/14\/486\/abstract\">http:\/\/www.biomedcentral.com\/1471-2164\/14\/486\/abstract<\/a>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 Des chercheurs am\u00e9ricains ont publi\u00e9 la plus compl\u00e8te description \u00e0 ce jour des g\u00e8nes exprim\u00e9s dans la r\u00e9tine humaine. Avec \u00e0 la cl\u00e9, quelques surprises\u0085 \u00a0 En utilisant la [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_angie_page":false,"page_builder":"","footnotes":""},"categories":[23133],"tags":[],"class_list":["post-153100","post","type-post","status-publish","format-standard","hentry","category-nouvelles"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La r\u00e9tine d\u00e9chiffr\u00e9e - OptikNow<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La r\u00e9tine d\u00e9chiffr\u00e9e - OptikNow\" \/>\n<meta property=\"og:description\" content=\"\u00a0 Des chercheurs am\u00e9ricains ont publi\u00e9 la plus compl\u00e8te description \u00e0 ce jour des g\u00e8nes exprim\u00e9s dans la r\u00e9tine humaine. 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