{"id":16721,"date":"2021-01-20T18:35:40","date_gmt":"2021-01-20T18:35:40","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=16721"},"modified":"2021-01-20T18:35:40","modified_gmt":"2021-01-20T18:35:40","slug":"new-research-creates-chicken-embryos-with-dinosaur-like-faces","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/hu\/science\/biology\/new-research-creates-chicken-embryos-with-dinosaur-like-faces\/","title":{"rendered":"\u00daj kutat\u00e1s: csirkeembri\u00f3k dinoszaurusz-szer\u0171 arccal"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u00daj kutat\u00e1s dinoszaurusz-szer\u0171 arc\u00fa csirkeembri\u00f3kat hoz l\u00e9tre<\/h2>\n\n<h2 class=\"wp-block-heading\">A madarak evol\u00faci\u00f3j\u00e1nak meg\u00e9rt\u00e9se<\/h2>\n\n<p>A tud\u00f3sokat r\u00e9g\u00f3ta leny\u0171g\u00f6zi a madarak dinoszauruszokb\u00f3l t\u00f6rt\u00e9n\u0151 evol\u00faci\u00f3ja. A madarak egyik legjellegzetesebb tulajdons\u00e1ga a cs\u0151r\u00fck, amely nagyon k\u00fcl\u00f6nb\u00f6zik dinoszaurusz \u0151seik orm\u00e1ny\u00e1t\u00f3l. Egy \u00faj tanulm\u00e1ny r\u00e1vil\u00e1g\u00edtott, hogy ez az \u00e1tmenet hogyan t\u00f6rt\u00e9nhetett meg.<\/p>\n\n<h2 class=\"wp-block-heading\">Az ormanyt\u00f3l a cs\u0151rig tart\u00f3 \u00e1tmenet<\/h2>\n\n<p>Az Evolution foly\u00f3iratban publik\u00e1lt tanulm\u00e1ny a csirkeembri\u00f3kban a cs\u0151r kialakul\u00e1s\u00e1ra \u00f6sszpontos\u00edtott. A kutat\u00f3k \u00f6sszehasonl\u00edtott\u00e1k a csirk\u00e9k \u00e9s emuk cs\u0151r\u00e9nek embrion\u00e1lis fejl\u0151d\u00e9s\u00e9t az alig\u00e1torok, gy\u00edkok \u00e9s tekn\u0151s\u00f6k orm\u00e1nya fejl\u0151d\u00e9s\u00e9vel. Azt tal\u00e1lt\u00e1k, hogy k\u00e9t feh\u00e9rje, az FGF \u00e9s a Wnt kulcsfontoss\u00e1g\u00fa szerepet j\u00e1tszik a cs\u0151r fejl\u0151d\u00e9s\u00e9ben.<\/p>\n\n<p>H\u00fcll\u0151kn\u00e9l az FGF \u00e9s a Wnt az embrion\u00e1lis arc k\u00e9t kis r\u00e9sz\u00e9ben aktiv\u00e1l\u00f3dik. Madarakn\u00e1l azonban ezek a feh\u00e9rj\u00e9k ugyanazon a ter\u00fcleten l\u00e9v\u0151 sz\u00f6vet nagy s\u00e1vj\u00e1ban aktiv\u00e1l\u00f3dnak. A feh\u00e9rjeaktivit\u00e1s ezen k\u00fcl\u00f6nbs\u00e9ge a cs\u0151r kifejl\u0151d\u00e9s\u00e9hez vezet az ormany helyett.<\/p>\n\n<h2 class=\"wp-block-heading\">Dino-szer\u0171 ormanyok l\u00e9trehoz\u00e1sa<\/h2>\n\n<p>Hipot\u00e9zis\u00fck tesztel\u00e9s\u00e9hez a kutat\u00f3k leblokkolt\u00e1k a feh\u00e9rjeaktivit\u00e1s sz\u00e9les s\u00e1vj\u00e1t a csirkeembri\u00f3kban, az FGF-et \u00e9s a Wnt-t a h\u00fcll\u0151kn\u00e9l l\u00e1that\u00f3 k\u00e9t pontra korl\u00e1tozva. Az eredm\u00e9ny olyan embri\u00f3k voltak, amelyek r\u00f6videbb, kerekebb csontokkal rendelkeztek a cs\u0151r ter\u00fclet\u00e9n, hasonl\u00f3an a dinoszauruszok ormany\u00e1hoz.<\/p>\n\n<h2 class=\"wp-block-heading\">A madarak evol\u00faci\u00f3j\u00e1nak implik\u00e1ci\u00f3i<\/h2>\n\n<p>A tanulm\u00e1ny meg\u00e1llap\u00edt\u00e1sai \u00faj betekint\u00e9st ny\u00fajtanak a madarak dinoszauruszokb\u00f3l val\u00f3 evol\u00faci\u00f3j\u00e1ba. Arra utalnak, hogy a cs\u0151r egy egyedi adapt\u00e1ci\u00f3, amely az ormanyhoz k\u00e9pest a cs\u0151r kialak\u00edt\u00e1s\u00e1hoz sz\u00fcks\u00e9ges elt\u00e9r\u0151 fejl\u0151d\u00e9si jelek miatt alakult ki.<\/p>\n\n<h2 class=\"wp-block-heading\">Etikai megfontol\u00e1sok<\/h2>\n\n<p>B\u00e1r a tanulm\u00e1ny nem hozott l\u00e9tre \u00e9letk\u00e9pes dino-csirke hibrideket, etikai k\u00e9rd\u00e9seket vet fel az embrion\u00e1lis fejl\u0151d\u00e9s manipul\u00e1l\u00e1s\u00e1nak potenci\u00e1lj\u00e1val kapcsolatban, hogy olyan \u00e1llatokat hozzanak l\u00e9tre, amelyek k\u00fcl\u00f6nb\u00f6z\u0151 fajok tulajdons\u00e1gaival rendelkeznek. A kutat\u00f3k hangs\u00falyozz\u00e1k, hogy az ilyen kutat\u00e1sok etikai implik\u00e1ci\u00f3it gondosan m\u00e9rlegelni kell, miel\u0151tt tov\u00e1bb menn\u00e9nk.<\/p>\n\n<h2 class=\"wp-block-heading\">Tov\u00e1bbi kutat\u00e1s<\/h2>\n\n<p>A kutat\u00f3k azt tervezik, hogy folytatj\u00e1k munk\u00e1jukat, hogy jobban meg\u00e9rts\u00e9k a madarakn\u00e1l a cs\u0151r evol\u00faci\u00f3j\u00e1hoz vezet\u0151 genetikai \u00e9s fejl\u0151d\u00e9si mechanizmusokat. Azt is rem\u00e9lik, hogy felfedezik eredm\u00e9nyeik potenci\u00e1lis alkalmaz\u00e1sait a biol\u00f3gia m\u00e1s ter\u00fcletein, p\u00e9ld\u00e1ul a regenerat\u00edv orvosl\u00e1sban.<\/p>\n\n<h2 class=\"wp-block-heading\">Tov\u00e1bbi olvasm\u00e1nyok<\/h2>\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.nature.com\/articles\/d41586-019-02230-3\" rel=\"nofollow noopener\" target=\"_blank\">Hogyan kapt\u00e1k meg a madarak a cs\u0151r\u00fcket<\/a><\/li>\n<li><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S1095927315000631\" rel=\"nofollow noopener\" target=\"_blank\">Mi az a cs\u0151r?<\/a><\/li>\n<li><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC6315054\/\" rel=\"nofollow noopener\" target=\"_blank\">Hogyan blokkoljuk a feh\u00e9rjeaktivit\u00e1s sz\u00e9les s\u00e1vj\u00e1t<\/a><\/li>\n<li><a href=\"https:\/\/evolution.berkeley.edu\/evolibrary\/article\/0_0_0\/evo_24\" rel=\"nofollow noopener\" target=\"_blank\">Mi\u00e9rt alak\u00edtja a cs\u0151r\u00f6ket az evol\u00faci\u00f3<\/a><\/li>\n<li><a href=\"https:\/\/www.nationalgeographic.com\/animals\/article\/scientists-create-chicken-embryos-dinosaur-faces\" rel=\"nofollow noopener\" target=\"_blank\">Hogyan hozzunk l\u00e9tre Dino-csirke hibrideket<\/a><\/li>\n<li><a href=\"https:\/\/theconversation.com\/scientists-create-chicken-embryos-with-dinosaur-faces-what-does-it-mean-for-ethics-120558\" rel=\"nofollow noopener\" target=\"_blank\">A madarak \u00f3r\u00e1j\u00e1nak visszaford\u00edt\u00e1s\u00e1nak etikai megfontol\u00e1sai<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>\u00daj kutat\u00e1s dinoszaurusz-szer\u0171 arc\u00fa csirkeembri\u00f3kat hoz l\u00e9tre A madarak evol\u00faci\u00f3j\u00e1nak meg\u00e9rt\u00e9se A tud\u00f3sokat r\u00e9g\u00f3ta leny\u0171g\u00f6zi a madarak dinoszauruszokb\u00f3l t\u00f6rt\u00e9n\u0151 evol\u00faci\u00f3ja. A madarak egyik legjellegzetesebb tulajdons\u00e1ga a cs\u0151r\u00fck, amely nagyon k\u00fcl\u00f6nb\u00f6zik&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[1381,22122,22123,136,188,137],"class_list":["post-16721","post","type-post","status-publish","format-standard","hentry","category-biology","tag-bird-evolution","tag-chicken-embryos","tag-dinosaur-faces","tag-evolution","tag-genetics","tag-paleontology"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/posts\/16721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/comments?post=16721"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/posts\/16721\/revisions"}],"predecessor-version":[{"id":16722,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/posts\/16721\/revisions\/16722"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/media?parent=16721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/categories?post=16721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/tags?post=16721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}