{"id":14258,"date":"2024-09-17T20:09:29","date_gmt":"2024-09-17T20:09:29","guid":{"rendered":"https:\/\/dailyai.com\/?p=14258"},"modified":"2024-09-18T08:42:03","modified_gmt":"2024-09-18T08:42:03","slug":"ai-accelerates-the-discovery-of-cryoprotectant-compounds-for-medicine-transport-and-storage","status":"publish","type":"post","link":"https:\/\/dailyai.com\/fr\/2024\/09\/ai-accelerates-the-discovery-of-cryoprotectant-compounds-for-medicine-transport-and-storage\/","title":{"rendered":"L'IA acc\u00e9l\u00e8re la d\u00e9couverte de compos\u00e9s cryoprotecteurs pour le transport et le stockage des m\u00e9dicaments"},"content":{"rendered":"<p><b>Des scientifiques ont mis au point un nouveau syst\u00e8me d'apprentissage automatique qui pourrait aider \u00e0 pr\u00e9server les vaccins, le sang et d'autres traitements m\u00e9dicaux.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Les <\/span><a href=\"https:\/\/www.nature.com\/articles\/s41467-024-52266-w\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">recherche<\/span><\/a><span style=\"font-weight: 400;\">publi\u00e9e dans Nature Communications, a \u00e9t\u00e9 men\u00e9e par l'universit\u00e9 de Warwick et l'universit\u00e9 de Manchester.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le syst\u00e8me d'IA permet d'identifier des mol\u00e9cules appel\u00e9es cryoprotecteurs, c'est-\u00e0-dire des compos\u00e9s qui pr\u00e9viennent les dommages caus\u00e9s par la cong\u00e9lation de mat\u00e9riel biologique.\u00a0<\/span><\/p>\n<p>Les cryoprotecteurs sont des substances sp\u00e9ciales qui aident \u00e0 prot\u00e9ger les cellules et les tissus vivants contre les dommages lorsqu'ils sont congel\u00e9s.<\/p>\n<p>Ils emp\u00eachent la formation de cristaux de glace nocifs, qui brisent essentiellement les tissus lorsqu'ils sont congel\u00e9s, et aident \u00e9galement les cellules \u00e0 maintenir leur structure en cas de froid extr\u00eame.<\/p>\n<p>Ces compos\u00e9s sont d'une importance fondamentale pour la conservation d'\u00e9l\u00e9ments tels que les vaccins, les \u00e9chantillons de sang et les cellules reproductrices en vue d'un stockage ou d'un transport \u00e0 long terme.<\/p>\n<p>Les cryopr\u00e9servants pourraient un jour \u00eatre utilis\u00e9s pour pr\u00e9server des organes, des tissus complexes, voire des \u00eatres humains entiers.<\/p>\n<p><span style=\"font-weight: 400;\">Actuellement, la recherche de nouveaux cryoprotecteurs est un processus lent d'essais et d'erreurs. Cette nouvelle approche bas\u00e9e sur la ML permet aux chercheurs de passer rapidement au crible des centaines de mol\u00e9cules potentielles de mani\u00e8re virtuelle.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Voici quelques points cl\u00e9s de l'\u00e9tude :<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">L'\u00e9quipe a cr\u00e9\u00e9 un mod\u00e8le d'apprentissage automatique form\u00e9 \u00e0 partir de donn\u00e9es provenant de cryoprotecteurs existants.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ce mod\u00e8le permet de pr\u00e9dire l'efficacit\u00e9 des nouvelles mol\u00e9cules en tant que cryoprotecteurs.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Les chercheurs ont utilis\u00e9 le mod\u00e8le pour s\u00e9lectionner une biblioth\u00e8que d'environ 500 acides amin\u00e9s.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Le syst\u00e8me a permis d'identifier plusieurs compos\u00e9s prometteurs, dont un ester d'aminooxazole plus performant que de nombreux cryoprotecteurs connus.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Des tests en laboratoire ont confirm\u00e9 les pr\u00e9dictions de l'IA, le nouveau compos\u00e9 pr\u00e9sentant une forte pr\u00e9vention des cristaux de glace.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">La mol\u00e9cule d\u00e9couverte a permis d'am\u00e9liorer la conservation des globules rouges lorsqu'elle est combin\u00e9e aux techniques standard.<\/span><\/li>\n<\/ol>\n<p class=\"whitespace-pre-wrap break-words\">L'ester d'oxazole amin\u00e9 identifi\u00e9 par l'\u00e9tude a d\u00e9montr\u00e9 des qualit\u00e9s d'inhibition de la recristallisation de la glace (IRI) particuli\u00e8rement remarquables. Il a presque totalement emp\u00each\u00e9 les cristaux de glace de grossir pendant le processus de cong\u00e9lation.<\/p>\n<p class=\"whitespace-pre-wrap break-words\">Le compos\u00e9 est rest\u00e9 efficace m\u00eame lorsque les chercheurs ont r\u00e9duit sa concentration. En outre, il a conserv\u00e9 ses propri\u00e9t\u00e9s inhibitrices de la glace dans une solution saline tamponn\u00e9e au phosphate (PBS), une solution qui reproduit la concentration de sel dans le corps humain.<\/p>\n<p><span style=\"font-weight: 400;\">Matt Warren, l'\u00e9tudiant en doctorat qui a dirig\u00e9 le projet, a d\u00e9crit la mani\u00e8re dont le mod\u00e8le acc\u00e9l\u00e8re l'efficacit\u00e9 : \"Apr\u00e8s des ann\u00e9es de collecte de donn\u00e9es laborieuses en laboratoire, il est extr\u00eamement int\u00e9ressant de disposer d'un mod\u00e8le d'apprentissage automatique qui permet une approche fond\u00e9e sur les donn\u00e9es pour pr\u00e9dire l'activit\u00e9 cryoprotectrice.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le professeur Matthew Gibson, de Manchester, ajoute : \"Les r\u00e9sultats du mod\u00e8le informatique ont \u00e9t\u00e9 \u00e9tonnants, identifiant des mol\u00e9cules actives que je n'aurais jamais choisies, m\u00eame avec mes ann\u00e9es d'expertise\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le professeur Gabriele Sosso, qui a dirig\u00e9 l'\u00e9quipe de Warwick, <\/span><a href=\"https:\/\/warwick.ac.uk\/newsandevents\/pressreleases\/?newsItem=8ac672c491f8c82d0191f9e2c7ff04ef\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">a expliqu\u00e9 dans un billet de blog<\/span><\/a><span style=\"font-weight: 400;\"> que, bien qu'impressionnant, l'apprentissage automatique n'est pas une panac\u00e9e pour ces types de probl\u00e8mes de recherche : \"Il est important de comprendre que l'apprentissage automatique n'est pas une solution magique \u00e0 tous les probl\u00e8mes scientifiques. Dans ce travail, nous l'avons utilis\u00e9 comme un outil parmi d'autres.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les chercheurs ont combin\u00e9 les pr\u00e9dictions de l'IA avec des simulations mol\u00e9culaires et des exp\u00e9riences en laboratoire - une approche multidimensionnelle qui a permis de valider les r\u00e9sultats et d'affiner le mod\u00e8le.<\/span><\/p>\n<p>Cela contribue \u00e0 une s\u00e9rie d'\u00e9tudes bas\u00e9es sur l'IA dans le domaine de la d\u00e9couverte de m\u00e9dicaments et de la conception de mat\u00e9riaux. Les chercheurs ont construit des mod\u00e8les d'IA pour g\u00e9n\u00e9rer des <a href=\"https:\/\/dailyai.com\/fr\/2023\/06\/researchers-build-breakthrough-ai-model-for-drug-discovery\/\">compos\u00e9s m\u00e9dicinaux<\/a>dont l'un a \u00e9t\u00e9 <a href=\"https:\/\/dailyai.com\/fr\/2023\/07\/first-ai-generated-drug-given-go-ahead-for-human-trials\/\">soumis \u00e0 un essai clinique<\/a>.<\/p>\n<p>DeepMind a \u00e9galement cr\u00e9\u00e9 un <a href=\"https:\/\/dailyai.com\/fr\/2023\/12\/ai-and-ml-spearheading-the-journey-to-colonize-new-worlds\/\">mod\u00e8le appel\u00e9 GNoME<\/a> capable de g\u00e9n\u00e9rer et de synth\u00e9tiser automatiquement des mat\u00e9riaux.<\/p>\n<p><span style=\"font-weight: 400;\">Les nouveaux compos\u00e9s cryoprotecteurs d\u00e9couverts pourraient avoir de vastes r\u00e9percussions dans le monde r\u00e9el.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Par exemple, les chercheurs d\u00e9crivent comment l'am\u00e9lioration de la cryoconservation pourrait prolonger la dur\u00e9e de conservation des vaccins et faciliter le transport de traitements m\u00e9dicaux sensibles vers des zones recul\u00e9es.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">La technique pourrait \u00e9galement acc\u00e9l\u00e9rer les transfusions sanguines en r\u00e9duisant le temps n\u00e9cessaire au traitement du sang congel\u00e9.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bien que les r\u00e9sultats soient prometteurs, l'\u00e9quipe avertit que des travaux suppl\u00e9mentaires sont n\u00e9cessaires pour comprendre pleinement le fonctionnement de ces nouveaux compos\u00e9s et pour garantir la s\u00e9curit\u00e9 et la stabilit\u00e9 m\u00e9dicales.\u00a0<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Des scientifiques ont mis au point un nouveau syst\u00e8me d'apprentissage automatique qui pourrait aider \u00e0 pr\u00e9server les vaccins, le sang et d'autres traitements m\u00e9dicaux.  La recherche, publi\u00e9e dans Nature Communications, a \u00e9t\u00e9 men\u00e9e par l'universit\u00e9 de Warwick et l'universit\u00e9 de Manchester. Le syst\u00e8me d'IA aide \u00e0 identifier les mol\u00e9cules appel\u00e9es cryoprotecteurs, des compos\u00e9s qui pr\u00e9viennent les dommages caus\u00e9s par la cong\u00e9lation des mat\u00e9riaux biologiques.  Les cryoprotecteurs sont des substances sp\u00e9ciales qui aident \u00e0 prot\u00e9ger les cellules et les tissus vivants contre les dommages lorsqu'ils sont congel\u00e9s. Ils emp\u00eachent la formation de cristaux de glace nocifs, qui brisent essentiellement les tissus lorsqu'ils sont congel\u00e9s, et aident \u00e9galement les cellules \u00e0 conserver leur structure dans des conditions de froid extr\u00eame. Ces compos\u00e9s<\/p>","protected":false},"author":2,"featured_media":14259,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[203,178],"class_list":["post-14258","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethics","tag-biotech","tag-medicine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AI accelerates the discovery of cryoprotectant compounds for medicine transport and storage | DailyAI<\/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:\/\/dailyai.com\/fr\/2024\/09\/ai-accelerates-the-discovery-of-cryoprotectant-compounds-for-medicine-transport-and-storage\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AI accelerates the discovery of cryoprotectant compounds for medicine transport and storage | DailyAI\" \/>\n<meta property=\"og:description\" content=\"Scientists have developed a new machine learning system that could help preserve vaccines, blood, and other medical treatments.\u00a0 The research, published in Nature Communications, was led by the University of Warwick and the University of Manchester. The AI system helps identify molecules called cryoprotectants \u2013 compounds that prevent damage when freezing biological materials.\u00a0 Cryoprotectants are special substances that help protect living cells and tissues from damage when they&#8217;re frozen. They work by preventing the formation of harmful ice crystals, which essentially break tissue apart when you freeze it, and also help cells maintain their structure in extreme cold. 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