{"id":105,"date":"2019-02-28T09:03:00","date_gmt":"2019-02-28T08:03:00","guid":{"rendered":"https:\/\/lpinstitute.dev.onpressidium.com\/news\/5d970adbc251183067ca1d30\/"},"modified":"2025-11-06T22:44:20","modified_gmt":"2025-11-06T21:44:20","slug":"nouvelle-publication-le-vieillissement-des-bacteries","status":"publish","type":"post","link":"https:\/\/www.learningplanetinstitute.org\/fr\/news\/nouvelle-publication-le-vieillissement-des-bacteries\/","title":{"rendered":"Nouvelle publication &#8211; Le vieillissement des bact\u00e9ries"},"content":{"rendered":"<figure class=\"kg-card kg-image-card\"><img alt=\"\" decoding=\"async\" src=\"http:\/\/www.learningplanetinstitute.org\/wp-content\/uploads\/2025\/10\/bf513c93-2c07-4e7f-9da2-f59537a98bf8.png\" class=\"aligncenter full-size wp-image-1328\" alt loading=\"lazy\"><\/figure>\n<p>Un nouvel article sur le vieillissement des bact\u00e9ries a \u00e9t\u00e9 r\u00e9dig\u00e9 par d&#8217;anciens (Ulrich K. Steiner, Ming Ni, Peipei Chen, Xiaohu Song) et d&#8217;actuels (Fran\u00e7ois Taddei, Ariel B. Lindner) chercheurs du CRI. Elle a utilis\u00e9 des donn\u00e9es exp\u00e9rimentales et des approches math\u00e9matiques pour montrer que le mod\u00e8le de vieillissement des bact\u00e9ries (en particulier <em>E. coli<\/em>) peut \u00eatre expliqu\u00e9 par deux processus stochastiques.<\/p>\n<p>Le texte complet de l&#8217;\u00e9tude est disponible <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1111\/evo.13708\" rel=\"noopener nofollow\"><u>ici<\/u><\/a><\/p>\n<p>Malgr\u00e9 les progr\u00e8s de la recherche sur le vieillissement, la multitude de mod\u00e8les de vieillissement et les preuves empiriques de divers mod\u00e8les de s\u00e9nescence, la compr\u00e9hension des processus biologiques qui fa\u00e7onnent la s\u00e9nescence fait d\u00e9faut. Ce travail montre que la s\u00e9nescence d&#8217;une population bact\u00e9rienne isog\u00e9nique d&#8217;Escherichia coli r\u00e9sulte de deux processus stochastiques. Le premier processus est un processus de d\u00e9t\u00e9rioration al\u00e9atoire au sein de la cellule, tel que g\u00e9n\u00e9r\u00e9 par l&#8217;accumulation al\u00e9atoire de dommages. Le second processus est li\u00e9 \u00e0 la transmission asym\u00e9trique stochastique, lors de la fission cellulaire, d&#8217;un facteur inconnu qui influe sur la mortalit\u00e9. Ces travaux appellent \u00e0 l&#8217;exploration d&#8217;influences stochastiques similaires qui fa\u00e7onnent les mod\u00e8les de vieillissement au-del\u00e0 des organismes simples.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>New publication \u2013 ageing in bacteria<\/p>\n","protected":false},"author":5,"featured_media":108,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[20],"tags":[21],"class_list":["post-105","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rd","tag-publication"],"acf":[],"meta_box":[],"_links":{"self":[{"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/posts\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/comments?post=105"}],"version-history":[{"count":0,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/posts\/105\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/media\/108"}],"wp:attachment":[{"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/media?parent=105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/categories?post=105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/tags?post=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}