{"id":3376,"date":"2023-07-29T14:42:58","date_gmt":"2023-07-29T14:42:58","guid":{"rendered":"https:\/\/dailyai.com\/?p=3376"},"modified":"2023-07-31T09:16:54","modified_gmt":"2023-07-31T09:16:54","slug":"researchers-use-machine-learning-to-resurrect-ancient-molecules","status":"publish","type":"post","link":"https:\/\/dailyai.com\/nb\/2023\/07\/researchers-use-machine-learning-to-resurrect-ancient-molecules\/","title":{"rendered":"Forskere bruker maskinl\u00e6ring til \u00e5 \"gjenopplive\" eldgamle molekyler"},"content":{"rendered":"<p><b>Et team av bioingeni\u00f8rer har lykkes med \u00e5 bruke kunstig intelligens til \u00e5 gjenopplive molekyler fra v\u00e5r fortid.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Denne spennende studien benyttet maskinl\u00e6ring (ML) til \u00e5 analysere proteindata fra moderne mennesker (<\/span><i><span style=\"font-weight: 400;\">Homo sapiens<\/span><\/i><span style=\"font-weight: 400;\">) samt fra v\u00e5re utd\u00f8dde slektninger, neandertalerne (<\/span><i><span style=\"font-weight: 400;\">Homo neanderthalensis<\/span><\/i><span style=\"font-weight: 400;\">) og denisovanere, en utd\u00f8dd art eller underart av mennesker fra Asia.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Den <\/span><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S1931312823002962?via%3Dihub\"><span style=\"font-weight: 400;\">studie<\/span><\/a><span style=\"font-weight: 400;\"> oppdaget molekyler med potensial til \u00e5 bekjempe sykdomsfremkallende bakterier. Disse teknikkene, kalt \"de-extinction\", kan potensielt danne grunnlaget for \u00e5 finne nye antibiotika.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Vi er motivert av tanken p\u00e5 \u00e5 bringe tilbake molekyler fra fortiden for \u00e5 l\u00f8se problemer vi har i dag\", sier Cesar de la Fuente, medforfatter av studien og bioingeni\u00f8r ved University of Pennsylvania i Philadelphia, <\/span><a href=\"https:\/\/www.nature.com\/articles\/d41586-023-02403-0\"><span style=\"font-weight: 400;\">fortalte naturen<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p>Hvis dette f\u00e5r deg til \u00e5 tenke p\u00e5 en viss dinosaurbasert filmserie <span style=\"font-weight: 400;\">-<\/span> Det var nettopp det som inspirerte forskerteamet.<\/p>\n<p>De la Fuente sa: \"Vi begynte faktisk \u00e5 tenke p\u00e5\u00a0<i>Jurassic Park<\/i>sier han. I stedet for \u00e5 vekke dinosaurene til live, slik forskerne gjorde i filmen fra 1993, kom teamet opp med en mer gjennomf\u00f8rbar id\u00e9: \"Hvorfor ikke vekke molekyler til live?\"<\/p>\n<p><span style=\"font-weight: 400;\">Det er et enormt press p\u00e5 forskerne for \u00e5 finne nye antibiotika, og de siste 30 \u00e5rene har det blitt oppdaget f\u00e5 effektive legemidler.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Samtidig \u00f8ker forekomsten av antibiotikaresistente bakterier, s\u00e5 nye behandlingsmetoder er kj\u00e6rkomne. <\/span><span style=\"font-weight: 400;\">AI gir <a href=\"https:\/\/dailyai.com\/nb\/2023\/05\/ai-helps-researchers-discover-a-new-antibiotic-for-treating-drug-resistant-bacteria\/\">mange muligheter<\/a> for \u00e5 utforske disse nye behandlingene, med en rekke studier som utnytter teknologien til \u00e5 avdekke skjulte og ukjente klinisk relevante molekyler.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mange organismer danner korte proteinunderenheter, s\u00e5kalte peptider, med antimikrobielle egenskaper. Flere antimikrobielle peptider, hovedsakelig fra bakterier, brukes til \u00e5 behandle infeksjoner.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Proteiner fra utd\u00f8dde arter - inkludert mennesker - kan v\u00e6re en verdifull, men underutforsket ressurs for utvikling av nye antibiotika.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Forskerne trente opp en ML-algoritme for \u00e5 identifisere steder p\u00e5 humane proteiner der de er delt inn i peptider. De brukte denne algoritmen p\u00e5 offentlig tilgjengelige proteinsekvenser fra <\/span><i><span style=\"font-weight: 400;\">H. sapiens, H. neanderthalensis<\/span><\/i><span style=\"font-weight: 400;\">og denisovaner, og identifiserer nye peptider basert p\u00e5 egenskapene til kjente antimikrobielle peptider.\u00a0<\/span><\/p>\n<figure id=\"attachment_3377\" aria-describedby=\"caption-attachment-3377\" style=\"width: 729px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3377\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg.jpg\" alt=\"AI-utryddelse\" width=\"729\" height=\"729\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg.jpg 996w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-300x300.jpg 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-150x150.jpg 150w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-768x768.jpg 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-180x180.jpg 180w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-90x90.jpg 90w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-370x370.jpg 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-800x800.jpg 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-20x20.jpg 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-740x740.jpg 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-24x24.jpg 24w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-48x48.jpg 48w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/1-s2.0-S1931312823002962-fx1_lrg-96x96.jpg 96w\" sizes=\"auto, (max-width: 729px) 100vw, 729px\" \/><figcaption id=\"caption-attachment-3377\" class=\"wp-caption-text\">Molekyl\u00e6r \"avutryddelse\" med kunstig intelligens. Kilde: <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S1931312823002962?via%3Dihub\">Molekyl\u00e6r utryddelse av eldgamle antimikrobielle peptider ved hjelp av maskinl\u00e6ring<\/a>.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Det tar bare noen f\u00e5 uker \u00e5 identifisere og teste potensielle legemiddelkandidater ved hjelp av kunstig intelligens, sammenlignet med den tradisjonelle prosessen som tar fra tre til seks \u00e5r \u00e5 oppdage et nytt antibiotikum.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Teamet testet en rekke peptider i laboratoriet for \u00e5 unders\u00f8ke deres evne til \u00e5 eliminere bakterier. De valgte ut 6 potente peptider - 4 fra <\/span><i><span style=\"font-weight: 400;\">H. sapiens<\/span><\/i><span style=\"font-weight: 400;\">, 1 fra <\/span><i><span style=\"font-weight: 400;\">H. neanderthalensis<\/span><\/i><span style=\"font-weight: 400;\">og 1 fra denisovanere. Peptidene ble testet p\u00e5 mus infisert med <\/span><i><span style=\"font-weight: 400;\">Acinetobacter baumannii<\/span><\/i><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Selv om ingen av peptidene drepte bakteriene fullstendig, klarte de alle \u00e5 hemme veksten av <\/span><i><span style=\"font-weight: 400;\">A. baumannii <\/span><\/i><span style=\"font-weight: 400;\">i l\u00e5rmuskelvev. 5 molekyler drepte bakterier i hudabscesser, selv om det var n\u00f8dvendig med h\u00f8ye doser.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Selv om algoritmen vi brukte, ikke ga noen fantastiske molekyler, tror jeg konseptet og rammeverket representerer en helt ny m\u00e5te \u00e5 tenke p\u00e5 n\u00e5r det gjelder oppdagelse av legemidler\", sier de la Fuente.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Euan Ashley, ekspert p\u00e5 genomikk og presisjonshelse ved Stanford University, kommenterte: \"De la Fuente og kollegene hans overbeviste meg om at det \u00e5 dykke ned i det arkaiske menneskelige genomet var en interessant og potensielt nyttig tiln\u00e6rming.\"<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Hvordan studien fungerte: en oversikt<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Forskerne satte seg fore \u00e5 gjenopplive (eller \"utd\u00f8\") bioaktive molekyler som ikke lenger produseres av levende organismer. Disse molekylene kan potensielt brukes til \u00e5 finne nye legemidler.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">De brukte en maskinl\u00e6ringsmodell (ML) som kalles panCleave. Dette er en \"random forest\"-modell, en type AI-algoritme som forutsier utfall basert p\u00e5 mange inndata. PanCleave-modellen forutsa hvor proteiner ville bli delt opp i mindre deler, s\u00e5kalte peptider. Disse peptidene har noen ganger antimikrobielle egenskaper.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Resultatet: Forskerne fant flere peptider (b\u00e5de fra moderne mennesker og utd\u00f8dde slektninger) som viste seg \u00e5 ha potensial som antimikrobielle midler n\u00e5r de ble testet i laboratoriet.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Testene omfattet motstand mot \u00e5 bli brutt ned av andre proteiner og evnen til \u00e5 trenge gjennom cellemembraner. Noen av peptidene bekjempet effektivt en vanlig bakterieinfeksjon i hudabscesser hos mus.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Maskinl\u00e6ringsmetoder kan identifisere lovende peptider for utvikling av nye antibiotika. I tillegg foresl\u00e5s \"molekyl\u00e6r de-extinction\" (gjenoppliving av molekyler fra utd\u00f8dde organismer) som et nytt rammeverk for legemiddeloppdagelse, spesielt for \u00e5 finne nye antibiotika.<\/span><\/li>\n<\/ul>\n<p>AIs potensial for \u00e5 oppdage nye legemidler i stor skala viser seg \u00e5 v\u00e6re enormt, og ikke bare antibiotika, men <a href=\"https:\/\/dailyai.com\/nb\/2023\/07\/ai-accelerates-discovery-of-anti-aging-drugs-in-new-study\/\">anti-aldringsmedisiner og andre forbindelser<\/a>\u00a0ogs\u00e5.<\/p>","protected":false},"excerpt":{"rendered":"<p>Et team av bioingeni\u00f8rer har lykkes med \u00e5 bruke kunstig intelligens til \u00e5 gjenopplive molekyler fra v\u00e5r fortid.  I denne spennende studien ble maskinl\u00e6ring (ML) brukt til \u00e5 analysere proteindata fra moderne mennesker (Homo sapiens) s\u00e5 vel som fra v\u00e5re utd\u00f8dde slektninger, neandertalerne (Homo neanderthalensis) og denisovanerne, en utd\u00f8dd menneskeart eller underart fra Asia.  Studien avdekket molekyler med potensial til \u00e5 bekjempe sykdomsfremkallende bakterier. Disse teknikkene, kalt \"de-extinction\", kan potensielt danne grunnlaget for \u00e5 finne nye antibiotika. \"Vi er motivert av tanken om \u00e5 bringe tilbake molekyler fra fortiden for \u00e5 l\u00f8se problemer vi har i dag\", sier Cesar de la Fuente,<\/p>","protected":false},"author":2,"featured_media":3378,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[259,203,260,178,101],"class_list":["post-3376","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-antibiotics","tag-biotech","tag-drug-discovery","tag-medicine","tag-medtech"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Researchers use machine learning to &#039;resurrect&#039; ancient molecules | DailyAI<\/title>\n<meta name=\"description\" content=\"A team of bioengineers has successfully utilized AI to resurrect molecules from our ancient past.\u00a0\" \/>\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\/nb\/2023\/07\/researchers-use-machine-learning-to-resurrect-ancient-molecules\/\" \/>\n<meta property=\"og:locale\" content=\"nb_NO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Researchers use machine learning to &#039;resurrect&#039; ancient molecules | DailyAI\" \/>\n<meta property=\"og:description\" content=\"A team of bioengineers has successfully utilized AI to resurrect molecules from our ancient past.\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/nb\/2023\/07\/researchers-use-machine-learning-to-resurrect-ancient-molecules\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-29T14:42:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-31T09:16:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/07\/shutterstock_1444962308.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"614\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sam Jeans\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:site\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:label1\" content=\"Skrevet av\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Jeans\" \/>\n\t<meta name=\"twitter:label2\" content=\"Ansl. lesetid\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/2023\\\/07\\\/researchers-use-machine-learning-to-resurrect-ancient-molecules\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2023\\\/07\\\/researchers-use-machine-learning-to-resurrect-ancient-molecules\\\/\"},\"author\":{\"name\":\"Sam Jeans\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/#\\\/schema\\\/person\\\/711e81f945549438e8bbc579efdeb3c9\"},\"headline\":\"Researchers use machine learning to &#8216;resurrect&#8217; 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