{"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\/it\/2023\/07\/researchers-use-machine-learning-to-resurrect-ancient-molecules\/","title":{"rendered":"I ricercatori usano l'apprendimento automatico per \"resuscitare\" antiche molecole"},"content":{"rendered":"<p><b>Un team di bioingegneri ha utilizzato con successo l'intelligenza artificiale per resuscitare molecole del nostro antico passato.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Questo intrigante studio ha utilizzato il machine learning (ML) per analizzare i dati sulle proteine degli esseri umani moderni (<\/span><i><span style=\"font-weight: 400;\">Homo sapiens<\/span><\/i><span style=\"font-weight: 400;\">) e dai nostri parenti estinti, i Neanderthal (<\/span><i><span style=\"font-weight: 400;\">Homo neanderthalensis<\/span><\/i><span style=\"font-weight: 400;\">) e i Denisovani, una specie o sottospecie umana estinta proveniente dall'Asia.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Il <\/span><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S1931312823002962?via%3Dihub\"><span style=\"font-weight: 400;\">studio<\/span><\/a><span style=\"font-weight: 400;\"> hanno scoperto molecole con il potenziale di combattere i batteri che causano malattie. Queste tecniche, denominate \"de-estinzione\", potrebbero potenzialmente servire come base per individuare nuovi antibiotici.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Siamo motivati dall'idea di riportare in vita le molecole del passato per affrontare i problemi di oggi\", spiega Cesar de la Fuente, coautore dello studio e bioingegnere presso l'Universit\u00e0 della Pennsylvania a Philadelphia, <\/span><a href=\"https:\/\/www.nature.com\/articles\/d41586-023-02403-0\"><span style=\"font-weight: 400;\">ha detto a Nature<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p>Se questo vi fa pensare a un certo franchise cinematografico basato sui dinosauri <span style=\"font-weight: 400;\">-<\/span> \u00e8 proprio questo che ha ispirato il team di ricerca.<\/p>\n<p>De la Fuente ha dichiarato: \"Abbiamo iniziato a pensare a\u00a0<i>Jurassic Park<\/i>\", dice. Piuttosto che riportare in vita i dinosauri, come hanno fatto gli scienziati nel film del 1993, il team ha avuto un'idea pi\u00f9 fattibile: \"Perch\u00e9 non riportare in vita le molecole?\".<\/p>\n<p><span style=\"font-weight: 400;\">La pressione sui ricercatori per individuare nuovi antibiotici \u00e8 immensa, visto che negli ultimi 30 anni sono stati scoperti pochi farmaci efficaci.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Nel frattempo, la prevalenza di batteri resistenti agli antibiotici \u00e8 in aumento, quindi sono benvenuti nuovi trattamenti. <\/span><span style=\"font-weight: 400;\">L'intelligenza artificiale fornisce <a href=\"https:\/\/dailyai.com\/it\/2023\/05\/ai-helps-researchers-discover-a-new-antibiotic-for-treating-drug-resistant-bacteria\/\">numerose strade<\/a> per esplorare questi nuovi trattamenti, con una serie di studi che sfruttano la tecnologia per scoprire molecole nascoste e sconosciute di rilevanza clinica.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Molti organismi generano brevi subunit\u00e0 proteiche note come peptidi con propriet\u00e0 antimicrobiche. Diversi peptidi antimicrobici, provenienti prevalentemente da batteri, sono utilizzati per trattare le infezioni.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le proteine delle specie estinte - compreso l'uomo - potrebbero costituire una risorsa preziosa ma poco esplorata per lo sviluppo di nuovi antibiotici.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">I ricercatori hanno addestrato un algoritmo di ML per identificare i punti delle proteine umane in cui vengono tagliate in peptidi. Hanno applicato questo algoritmo alle sequenze proteiche disponibili pubblicamente da <\/span><i><span style=\"font-weight: 400;\">H. sapiens, H. neanderthalensis<\/span><\/i><span style=\"font-weight: 400;\">e Denisovans, identificando nuovi peptidi sulla base delle caratteristiche dei peptidi antimicrobici noti.\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=\"La de-estinzione dell&#039;IA\" 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\">La \"de-estinzione\" molecolare con l'intelligenza artificiale. Fonte: <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S1931312823002962?via%3Dihub\">De-estinzione molecolare di antichi peptidi antimicrobici grazie al machine learning<\/a>.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">L'identificazione e il test di potenziali candidati farmaci con l'IA richiede solo poche settimane, rispetto al processo tradizionale che richiede da 3 a 6 settimane per scoprire un nuovo antibiotico.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Il team ha testato una serie di peptidi in laboratorio per esplorare la loro capacit\u00e0 di eliminare i batteri. Hanno selezionato 6 potenti peptidi - 4 provenienti da <\/span><i><span style=\"font-weight: 400;\">H. sapiens<\/span><\/i><span style=\"font-weight: 400;\">, 1 da <\/span><i><span style=\"font-weight: 400;\">H. neanderthalensis<\/span><\/i><span style=\"font-weight: 400;\">e 1 di Denisovans. I peptidi sono stati testati su topi infettati da <\/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;\">Sebbene nessuno dei peptidi abbia ucciso del tutto i batteri, tutti sono riusciti a inibire la crescita di <\/span><i><span style=\"font-weight: 400;\">A. baumannii <\/span><\/i><span style=\"font-weight: 400;\">nel tessuto muscolare della coscia. 5 molecole hanno ucciso i batteri negli ascessi cutanei, anche se erano necessari dosaggi elevati.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Anche se l'algoritmo che abbiamo utilizzato non ha prodotto molecole straordinarie, credo che il concetto e la struttura rappresentino una strada completamente nuova per pensare alla scoperta di farmaci\", afferma de la Fuente.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Euan Ashley, esperto di genomica e di salute di precisione presso l'Universit\u00e0 di Stanford, ha commentato: \"De la Fuente e i suoi colleghi mi hanno convinto che immergersi nel genoma umano arcaico fosse un approccio interessante e potenzialmente utile\".<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Come ha funzionato lo studio: una sintesi<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">I ricercatori si sono proposti di resuscitare (o \"de-estinguere\") le molecole bioattive non pi\u00f9 prodotte dagli organismi viventi. Queste molecole potrebbero essere utilizzate per la scoperta di farmaci.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hanno utilizzato un modello di apprendimento automatico (ML) noto come panCleave. Si tratta di un modello di \"foresta casuale\", un tipo di algoritmo di intelligenza artificiale che predice i risultati sulla base di molti input. Il modello panCleave ha previsto dove le proteine sarebbero state suddivise in parti pi\u00f9 piccole, note come peptidi. Questi peptidi hanno talvolta propriet\u00e0 antimicrobiche.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Il risultato: I ricercatori hanno trovato diversi peptidi (sia di esseri umani moderni che di parenti umani estinti) che hanno mostrato un potenziale come agenti antimicrobici quando sono stati testati in laboratorio.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">I test includevano la resistenza alla rottura da parte di altre proteine e la capacit\u00e0 di permeare le membrane cellulari. Alcuni dei peptidi hanno combattuto efficacemente una comune infezione batterica negli ascessi cutanei dei topi.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">I metodi di apprendimento automatico possono identificare peptidi promettenti per lo sviluppo di nuovi antibiotici. Inoltre, la \"de-estinzione molecolare\" (resuscitare molecole da organismi estinti) \u00e8 proposta come un nuovo quadro per la scoperta di farmaci, in particolare per trovare nuovi antibiotici.<\/span><\/li>\n<\/ul>\n<p>Il potenziale dell'intelligenza artificiale per la scoperta di nuovi farmaci su scala si sta rivelando immenso, e non solo per quanto riguarda gli antibiotici, ma anche <a href=\"https:\/\/dailyai.com\/it\/2023\/07\/ai-accelerates-discovery-of-anti-aging-drugs-in-new-study\/\">farmaci anti-invecchiamento e altri composti<\/a>\u00a0anche.<\/p>","protected":false},"excerpt":{"rendered":"<p>Un team di bioingegneri ha utilizzato con successo l'intelligenza artificiale per resuscitare molecole del nostro antico passato.  Questo intrigante studio ha utilizzato l'apprendimento automatico (ML) per analizzare i dati proteici degli esseri umani moderni (Homo sapiens) e dei nostri parenti estinti, i Neanderthal (Homo neanderthalensis) e i Denisovani, una specie o sottospecie umana estinta proveniente dall'Asia.  Lo studio ha scoperto molecole potenzialmente in grado di combattere i batteri che causano le malattie. Queste tecniche, denominate \"de-estinzione\", potrebbero potenzialmente servire come base per individuare nuovi antibiotici. \"Siamo motivati dall'idea di riportare in vita le molecole del passato per affrontare i problemi di oggi\", spiega 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\/it\/2023\/07\/researchers-use-machine-learning-to-resurrect-ancient-molecules\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\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\/it\/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=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Jeans\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minuti\" \/>\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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