{"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\/pt\/2024\/09\/ai-accelerates-the-discovery-of-cryoprotectant-compounds-for-medicine-transport-and-storage\/","title":{"rendered":"A IA acelera a descoberta de compostos crioprotectores para o transporte e armazenamento de medicamentos"},"content":{"rendered":"<p><b>Os cientistas desenvolveram um novo sistema de aprendizagem autom\u00e1tica que poder\u00e1 ajudar a preservar vacinas, sangue e outros tratamentos m\u00e9dicos.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">O <\/span><a href=\"https:\/\/www.nature.com\/articles\/s41467-024-52266-w\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">investiga\u00e7\u00e3o<\/span><\/a><span style=\"font-weight: 400;\">O estudo, publicado na revista Nature Communications, foi conduzido pela Universidade de Warwick e pela Universidade de Manchester.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O sistema de IA ajuda a identificar mol\u00e9culas chamadas crioprotectores - compostos que evitam danos quando se congelam materiais biol\u00f3gicos.\u00a0<\/span><\/p>\n<p>Os crioprotectores s\u00e3o subst\u00e2ncias especiais que ajudam a proteger as c\u00e9lulas e os tecidos vivos de danos quando s\u00e3o congelados.<\/p>\n<p>Funcionam impedindo a forma\u00e7\u00e3o de cristais de gelo nocivos, que essencialmente partem o tecido quando o congelamos, e tamb\u00e9m ajudam as c\u00e9lulas a manter a sua estrutura num frio extremo.<\/p>\n<p>Estes compostos s\u00e3o de import\u00e2ncia fundamental para a preserva\u00e7\u00e3o de coisas como vacinas, amostras de sangue e c\u00e9lulas reprodutivas para armazenamento ou transporte a longo prazo.<\/p>\n<p>Os criopreservantes poder\u00e3o um dia ser utilizados para preservar \u00f3rg\u00e3os, tecidos complexos ou mesmo seres humanos inteiros.<\/p>\n<p><span style=\"font-weight: 400;\">Atualmente, encontrar novos crioprotectores \u00e9 um processo lento, de tentativa e erro. Esta nova abordagem baseada em ML permite aos investigadores analisar rapidamente centenas de potenciais mol\u00e9culas virtualmente.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Eis alguns pontos-chave do estudo:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A equipa criou um modelo de aprendizagem autom\u00e1tica treinado com base nos dados dos crioprotectores existentes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Este modelo pode prever a efic\u00e1cia de novas mol\u00e9culas como crioprotectores.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Os investigadores utilizaram o modelo para analisar uma biblioteca de cerca de 500 amino\u00e1cidos.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">O sistema identificou v\u00e1rios compostos promissores, incluindo um \u00e9ster de aminooxazol que superou o desempenho de muitos crioprotectores conhecidos.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Os testes laboratoriais confirmaram as previs\u00f5es da IA, com o novo composto a mostrar uma forte preven\u00e7\u00e3o dos cristais de gelo.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A mol\u00e9cula descoberta melhorou a preserva\u00e7\u00e3o dos gl\u00f3bulos vermelhos quando combinada com t\u00e9cnicas padr\u00e3o.<\/span><\/li>\n<\/ol>\n<p class=\"whitespace-pre-wrap break-words\">O \u00e9ster de amino oxazol identificado pelo estudo demonstrou qualidades particularmente not\u00e1veis de inibi\u00e7\u00e3o da recristaliza\u00e7\u00e3o do gelo (IRI). Impediu quase completamente que os cristais de gelo aumentassem de tamanho durante o processo de congela\u00e7\u00e3o.<\/p>\n<p class=\"whitespace-pre-wrap break-words\">O composto foi eficaz mesmo quando os investigadores reduziram a sua concentra\u00e7\u00e3o. Al\u00e9m disso, tamb\u00e9m manteve as suas propriedades inibidoras do gelo em solu\u00e7\u00e3o salina tamponada com fosfato (PBS), uma solu\u00e7\u00e3o que imita a concentra\u00e7\u00e3o de sal no corpo humano.<\/p>\n<p><span style=\"font-weight: 400;\">O Dr. Matt Warren, o estudante de doutoramento que liderou o projeto, descreveu a forma como o modelo acelera a efici\u00eancia: \"Ap\u00f3s anos de recolha intensiva de dados no laborat\u00f3rio, \u00e9 incrivelmente empolgante dispor agora de um modelo de aprendizagem autom\u00e1tica que permite uma abordagem baseada em dados para prever a atividade crioprotectora.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O Professor Matthew Gibson, de Manchester, acrescenta: \"Os resultados do modelo inform\u00e1tico foram espantosos, identificando mol\u00e9culas activas que eu nunca teria escolhido, mesmo com os meus anos de experi\u00eancia\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O Professor Gabriele Sosso, que dirigiu a equipa de Warwick, <\/span><a href=\"https:\/\/warwick.ac.uk\/newsandevents\/pressreleases\/?newsItem=8ac672c491f8c82d0191f9e2c7ff04ef\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">explicado numa publica\u00e7\u00e3o no blogue<\/span><\/a><span style=\"font-weight: 400;\"> que, apesar de impressionante, a aprendizagem autom\u00e1tica n\u00e3o \u00e9 uma panaceia para este tipo de problemas de investiga\u00e7\u00e3o: \"\u00c9 importante compreender que a aprendizagem autom\u00e1tica n\u00e3o \u00e9 uma solu\u00e7\u00e3o m\u00e1gica para todos os problemas cient\u00edficos. Neste trabalho, utiliz\u00e1mo-la como uma ferramenta entre muitas\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Os investigadores combinaram as previs\u00f5es da IA com simula\u00e7\u00f5es moleculares e experi\u00eancias laboratoriais - uma abordagem multifacetada que ajudou a validar os resultados e a aperfei\u00e7oar o modelo.<\/span><\/p>\n<p>Isto contribui para uma s\u00e9rie de estudos orientados para a IA sobre a descoberta de medicamentos e a conce\u00e7\u00e3o de materiais. Os investigadores criaram modelos de IA para gerar <a href=\"https:\/\/dailyai.com\/pt\/2023\/06\/researchers-build-breakthrough-ai-model-for-drug-discovery\/\">compostos medicinais<\/a>, um dos quais foi <a href=\"https:\/\/dailyai.com\/pt\/2023\/07\/first-ai-generated-drug-given-go-ahead-for-human-trials\/\">levado a ensaio cl\u00ednico<\/a>.<\/p>\n<p>A DeepMind tamb\u00e9m criou um <a href=\"https:\/\/dailyai.com\/pt\/2023\/12\/ai-and-ml-spearheading-the-journey-to-colonize-new-worlds\/\">modelo denominado GNoME<\/a> capaz de gerar e sintetizar materiais automaticamente.<\/p>\n<p><span style=\"font-weight: 400;\">Os novos compostos crioprotectores descobertos poder\u00e3o ter amplos impactos no mundo real.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Por exemplo, os investigadores descrevem como a melhoria da criopreserva\u00e7\u00e3o pode prolongar o prazo de validade das vacinas e facilitar o transporte de tratamentos m\u00e9dicos sens\u00edveis para zonas remotas.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A t\u00e9cnica poderia tamb\u00e9m acelerar as transfus\u00f5es de sangue, reduzindo o tempo necess\u00e1rio para processar o sangue congelado.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Embora os resultados sejam promissores, a equipa adverte que \u00e9 necess\u00e1rio mais trabalho para compreender totalmente o funcionamento destes novos compostos e para garantir a seguran\u00e7a e estabilidade m\u00e9dicas.\u00a0<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Os cientistas desenvolveram um novo sistema de aprendizagem autom\u00e1tica que poder\u00e1 ajudar a preservar vacinas, sangue e outros tratamentos m\u00e9dicos.  A investiga\u00e7\u00e3o, publicada na revista Nature Communications, foi conduzida pela Universidade de Warwick e pela Universidade de Manchester. O sistema de IA ajuda a identificar mol\u00e9culas chamadas crioprotectores - compostos que evitam danos quando se congelam materiais biol\u00f3gicos.  Os crioprotectores s\u00e3o subst\u00e2ncias especiais que ajudam a proteger as c\u00e9lulas e os tecidos vivos de danos quando s\u00e3o congelados. Funcionam impedindo a forma\u00e7\u00e3o de cristais de gelo nocivos, que essencialmente partem o tecido quando o congelamos, e tamb\u00e9m ajudam as c\u00e9lulas a manter a sua estrutura num frio extremo. Estes compostos<\/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\/pt\/2024\/09\/ai-accelerates-the-discovery-of-cryoprotectant-compounds-for-medicine-transport-and-storage\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\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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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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