{"id":146415,"date":"2013-08-29T10:38:21","date_gmt":"2013-08-29T07:38:21","guid":{"rendered":"http:\/\/www.nationalturk.com\/?p=146415"},"modified":"2013-08-29T10:38:21","modified_gmt":"2013-08-29T07:38:21","slug":"bilim-insanlari-minyatur-insan-beyni-uretti-146415","status":"publish","type":"post","link":"https:\/\/www.nationalturk.com\/tr\/bilim-insanlari-minyatur-insan-beyni-uretti-146415\/","title":{"rendered":"Bilim insanlar\u0131 bunu da yapt\u0131! Minyat\u00fcr insan beyni \u00fcretildi"},"content":{"rendered":"

\"Bilim<\/a>Nature dergisinde yay\u0131mlanan ara\u015ft\u0131rmaya g\u00f6re bilim insanlar\u0131, laboratuvar ortam\u0131nda minyat\u00fcr insan beyinleri geli\u015ftirmeyi ba\u015fard\u0131.<\/h1>\n

9 haftal\u0131k bir fet\u00fcs\u00fcnkine benzer geli\u015fim g\u00f6steren bezelye b\u00fcy\u00fckl\u00fc\u011f\u00fcndeki beyinlerin d\u00fc\u015f\u00fcnme yetene\u011fi yok.<\/p>\n

Avusturya Bilimler Akademisi Molek\u00fcler Biyo-Teknoloji B\u00f6l\u00fcm\u00fc ara\u015ft\u0131rmac\u0131lar\u0131, embriyonun beyin ve omurili\u011fi geli\u015ftiren k\u0131sm\u0131n\u0131 \u00fcretebilmek i\u00e7in hem embriyolardan al\u0131nan k\u00f6k h\u00fccreleri hem de yeti\u015fkinlerden al\u0131nan deri h\u00fccrelerini kulland\u0131.<\/p>\n

B\u00fcy\u00fcmeleri i\u00e7in jel damlac\u0131klar\u0131 i\u00e7ine konulan h\u00fccreler, daha sonra besin ve oksijen alabilmeleri i\u00e7in \u00f6zel bir biyolojik reakt\u00f6r\u00fcn i\u00e7ine yerle\u015ftirildi.<\/p>\n

Geli\u015fmeye ba\u015flayan h\u00fccrelerin, serebral korteks, retina ve nadiren de olsa baz\u0131 \u00f6rneklerde yeti\u015fkin beyninde bellekten sorumlu olan hipokamp gibi beyin b\u00f6lgelerini olu\u015fturduklar\u0131 g\u00f6zlemlendi.<\/p>\n

Bilim insamlar\u0131, laboratuvar ortam\u0131nda \u00fcretilen beyin dokular\u0131n\u0131n 2 ayl\u0131k bir s\u00fcre i\u00e7inde 4 milimetrelik b\u00fcy\u00fckl\u00fc\u011fe ula\u015ft\u0131\u011f\u0131n\u0131 kaydetti.<\/p>\n

Beyin dokusunda kan ak\u0131\u015f\u0131 olmad\u0131\u011f\u0131 i\u00e7in besin maddeleri ile oksijenin beyin-benzeri yap\u0131n\u0131n ortas\u0131na ula\u015famad\u0131\u011f\u0131na i\u015faret eden bilim insanlar\u0131, bu nedenle yakla\u015f\u0131k bir y\u0131l hayatta kalan “minik beyinlerin” daha fazla b\u00fcy\u00fcmedi\u011fini s\u00f6yledi.<\/p>\n

Bilim d\u00fcnyas\u0131nda b\u00fcy\u00fck heyecan yaratan \u00e7al\u0131\u015fman\u0131n, \u015fizofreni, otizm ve hatta Alzheimer gibi n\u00f6rolojik hastal\u0131klar\u0131n anla\u015f\u0131lmas\u0131 ve tedavi edilmesinde \u00e7\u0131\u011f\u0131r a\u00e7acak geli\u015fmelere yol a\u00e7mas\u0131 bekleniyor.<\/p>\n

Elde edilen beyin dokular\u0131n\u0131n farelere aktar\u0131larak, ila\u00e7 ara\u015ft\u0131rmalar\u0131nda kullan\u0131lmas\u0131 da planlan\u0131yor.<\/p>\n

Ara\u015ft\u0131rmac\u0131lardan Juergen Knoblich, elde ettikleri beyin dokular\u0131n\u0131 mikrosefali hastal\u0131\u011f\u0131 ile ilgili ara\u015ft\u0131rmalar i\u00e7in kullanmaya ba\u015flad\u0131klar\u0131n\u0131 a\u00e7\u0131klad\u0131.<\/p>\n

Knoblich, laboratuvar ortam\u0131nda \u00fcretilen beyin dokular\u0131nda bilin\u00e7 ve fark\u0131ndal\u0131\u011f\u0131n s\u00f6z konusu olmad\u0131\u011f\u0131n\u0131, bu nedenle dokular\u0131n kullan\u0131lmas\u0131n\u0131n herhangi bir etik soruna yol a\u00e7mayaca\u011f\u0131n\u0131 s\u00f6zlerine ekledi.<\/p>\n\n","protected":false},"excerpt":{"rendered":"

Nature dergisinde yay\u0131mlanan ara\u015ft\u0131rmaya g\u00f6re bilim insanlar\u0131, laboratuvar ortam\u0131nda minyat\u00fcr insan beyinleri geli\u015ftirmeyi ba\u015fard\u0131. 9 haftal\u0131k bir fet\u00fcs\u00fcnkine benzer geli\u015fim g\u00f6steren bezelye b\u00fcy\u00fckl\u00fc\u011f\u00fcndeki beyinlerin d\u00fc\u015f\u00fcnme yetene\u011fi yok. Avusturya Bilimler Akademisi Molek\u00fcler Biyo-Teknoloji B\u00f6l\u00fcm\u00fc ara\u015ft\u0131rmac\u0131lar\u0131, embriyonun beyin ve omurili\u011fi geli\u015ftiren k\u0131sm\u0131n\u0131 \u00fcretebilmek i\u00e7in hem embriyolardan al\u0131nan k\u00f6k h\u00fccreleri hem de yeti\u015fkinlerden al\u0131nan deri h\u00fccrelerini kulland\u0131. B\u00fcy\u00fcmeleri …<\/p>\n","protected":false},"author":3,"featured_media":177596,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6669,6224,6662],"tags":[5615,2173,136016,127019],"class_list":["post-146415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-saglik","category-teknoloji","category-yasam","tag-alzheimer","tag-avusturya","tag-nature-dergisi","tag-otizm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/posts\/146415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/comments?post=146415"}],"version-history":[{"count":0,"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/posts\/146415\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/media\/177596"}],"wp:attachment":[{"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/media?parent=146415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/categories?post=146415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nationalturk.com\/tr\/wp-json\/wp\/v2\/tags?post=146415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}