{"id":17346,"date":"2021-04-11T11:05:17","date_gmt":"2021-04-11T11:05:17","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=17346"},"modified":"2021-04-11T11:05:17","modified_gmt":"2021-04-11T11:05:17","slug":"gene-editing-in-human-embryos-breakthrough-with-ethical-concerns","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/genetics\/gene-editing-in-human-embryos-breakthrough-with-ethical-concerns\/","title":{"rendered":"Editace gen\u016f v lidsk\u00fdch embry\u00edch: V\u011bdeck\u00fd pr\u016flom s etick\u00fdmi dilematy"},"content":{"rendered":"

Editace gen\u016f v lidsk\u00fdch embry\u00edch: V\u011bdeck\u00fd pr\u016flom s etick\u00fdmi obavami<\/h2>\n\n

Pozad\u00ed<\/h2>\n\n

Editace gen\u016f, zejm\u00e9na pomoc\u00ed syst\u00e9mu CRISPR\/Cas9, se stala pr\u016fkopnickou technologi\u00ed v genetice. Tento n\u00e1stroj umo\u017e\u0148uje v\u011bdc\u016fm p\u0159esn\u011b upravovat sekvence DNA, co\u017e nab\u00edz\u00ed potenci\u00e1l pro l\u00e9\u010dbu genetick\u00fdch onemocn\u011bn\u00ed opravou nebo nahrazen\u00edm vadn\u00fdch gen\u016f. Pou\u017eit\u00ed editace gen\u016f v lidsk\u00fdch embry\u00edch v\u0161ak vyvol\u00e1v\u00e1 zna\u010dn\u00e9 etick\u00e9 obavy.<\/p>\n\n

CRISPR\/Cas9 a editace gen\u016f lidsk\u00fdch embry\u00ed<\/h2>\n\n

CRISPR\/Cas9 je syst\u00e9m editace gen\u016f, kter\u00fd funguje jako molekul\u00e1rn\u00ed n\u016f\u017eky, kter\u00e9 st\u0159\u00edhaj\u00ed a vkl\u00e1daj\u00ed specifick\u00e9 sekvence DNA. \u010c\u00edn\u0161t\u00ed v\u011bdci ned\u00e1vno pou\u017eili CRISPR\/Cas9 k editaci gen\u016f lidsk\u00fdch embry\u00ed a zam\u011b\u0159ili se na gen zodpov\u011bdn\u00fd za beta-talasemii, potenci\u00e1ln\u011b smrtelnou poruchu krve.<\/p>\n\n

Etick\u00e9 obavy<\/h2>\n\n

Pou\u017eit\u00ed editace gen\u016f v lidsk\u00fdch embry\u00edch vyvolalo intenzivn\u00ed debatu kv\u016fli obav\u00e1m o jeho bezpe\u010dnost a etick\u00e9 d\u016fsledky. Jednou z hlavn\u00edch obav je potenci\u00e1l pro z\u00e1sahy mimo c\u00edl, kdy syst\u00e9m CRISPR\/Cas9 omylem vyst\u0159ihne nezam\u00fd\u0161len\u00e9 sekvence DNA. To by mohlo v\u00e9st k v\u00e1\u017en\u00fdm zdravotn\u00edm probl\u00e9m\u016fm, v\u010detn\u011b rakoviny.<\/p>\n\n

\u00daprava genetick\u00e9ho k\u00f3du lidsk\u00fdch embry\u00ed by nav\u00edc mohla m\u00edt nep\u0159edv\u00eddateln\u00e9 d\u016fsledky pro budouc\u00ed generace. Zm\u011bny proveden\u00e9 v DNA embrya by byly p\u0159ed\u00e1ny v\u0161em jeho potomk\u016fm, co\u017e by mohlo vyvolat obavy o ne\u00famysln\u00e9 genetick\u00e9 modifikace a kluzk\u00fd svah k n\u00e1vrh\u00e1\u0159sk\u00fdm d\u011btem.<\/p>\n\n

Bezpe\u010dnostn\u00ed obavy<\/h2>\n\n

Studie proveden\u00e1 \u010d\u00ednsk\u00fdmi v\u011bdci zd\u016fraznila v\u00fdzvy spojen\u00e9 s pou\u017e\u00edv\u00e1n\u00edm CRISPR\/Cas9 v lidsk\u00fdch embry\u00edch. Pouze mal\u00e1 \u010d\u00e1st editovan\u00fdch embry\u00ed m\u011bla \u00fasp\u011b\u0161n\u00e9 opravy gen\u016f, zat\u00edmco jin\u00e9 m\u011bly \u010d\u00e1ste\u010dn\u00e9 opravy nebo byly \u0161t\u011bpeny na \u0161patn\u00e9m m\u00edst\u011b. Tato zji\u0161t\u011bn\u00ed zd\u016fraz\u0148uj\u00ed bezpe\u010dnostn\u00ed obavy spojen\u00e9 s editac\u00ed gen\u016f lidsk\u00fdch embry\u00ed.<\/p>\n\n

Aktu\u00e1ln\u00ed stav a budouc\u00ed vyhl\u00eddky<\/h2>\n\n

Navzdory etick\u00fdm a bezpe\u010dnostn\u00edm obav\u00e1m v\u00fdzkum editace gen\u016f v lidsk\u00fdch embry\u00edch pokra\u010duje. V\u011bdci pracuj\u00ed na zlep\u0161en\u00ed p\u0159esnosti a bezpe\u010dnosti CRISPR\/Cas9 a na v\u00fdvoji nov\u00fdch aplikac\u00ed t\u00e9to technologie. N\u011bkte\u0159\u00ed v\u011bdci tvrd\u00ed, \u017ee potenci\u00e1ln\u00ed p\u0159\u00ednosy editace gen\u016f, jako je l\u00e9\u010den\u00ed genetick\u00fdch onemocn\u011bn\u00ed, p\u0159evy\u0161uj\u00ed rizika.<\/p>\n\n

Jin\u00ed v\u0161ak tvrd\u00ed, \u017ee etick\u00e9 obavy by m\u011bly m\u00edt p\u0159ednost a \u017ee editace gen\u016f lidsk\u00fdch embry\u00ed by nem\u011bla pokra\u010dovat, dokud nebude jasn\u011b pochopeno dlouhodob\u00e9 riziko a p\u0159\u00ednos.<\/p>\n\n

Historick\u00fd kontext<\/h2>\n\n

Debata o editaci gen\u016f v lidsk\u00fdch embry\u00edch nen\u00ed nov\u00e1. Podobn\u00e9 obavy byly vzneseny v po\u010d\u00e1tc\u00edch v\u00fdzkumu klonov\u00e1n\u00ed. Jak se v\u0161ak technologie klonov\u00e1n\u00ed zlep\u0161ovala, stala se p\u0159ijateln\u011bj\u0161\u00ed ve sv\u011bt\u011b hospod\u00e1\u0159sk\u00fdch zv\u00ed\u0159at a dom\u00e1c\u00edch mazl\u00ed\u010dk\u016f. To sam\u00e9 se m\u016f\u017ee nakonec st\u00e1t s editac\u00ed gen\u016f v embry\u00edch, ale etick\u00e9 obavy jsou prozat\u00edm st\u00e1le v\u00fdznamnou p\u0159ek\u00e1\u017ekou.<\/p>\n\n

Odborn\u00e9 n\u00e1zory<\/h2>\n\n

Odborn\u00edci v t\u00e9to oblasti vyj\u00e1d\u0159ili r\u016fzn\u00e9 n\u00e1zory na studii a budoucnost editace gen\u016f v lidsk\u00fdch embry\u00edch. N\u011bkte\u0159\u00ed, jako Dr. George Daley z Harvard Medical School, se domn\u00edvaj\u00ed, \u017ee studie je v\u00fdstra\u017en\u00fdm p\u0159\u00edb\u011bhem a \u017ee technologie je\u0161t\u011b nen\u00ed p\u0159ipravena pro klinick\u00e9 testov\u00e1n\u00ed.<\/p>\n\n

Jin\u00ed, jako Dr. Junjiu Huang, vedouc\u00ed v\u00fdzkumn\u00edk \u010d\u00ednsk\u00e9 studie, tvrd\u00ed, \u017ee data by m\u011bla b\u00fdt zve\u0159ejn\u011bna, aby se lid\u00e9 mohli informovan\u011b rozhodovat o technologii.<\/p>\n\n

Z\u00e1v\u011br<\/h2>\n\n

Pou\u017eit\u00ed editace gen\u016f v lidsk\u00fdch embry\u00edch je komplexn\u00ed a kontroverzn\u00ed t\u00e9ma, kter\u00e9 vyvol\u00e1v\u00e1 d\u016fle\u017eit\u00e9 etick\u00e9 a bezpe\u010dnostn\u00ed obavy. P\u0159esto\u017ee tato technologie m\u00e1 potenci\u00e1l zm\u011bnit medic\u00ednu, je nezbytn\u00e9 postupovat opatrn\u011b a zajistit, aby byla zavedena vhodn\u00e1 ochrann\u00e1 opat\u0159en\u00ed na ochranu zdrav\u00ed a pohody budouc\u00edch generac\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

Editace gen\u016f v lidsk\u00fdch embry\u00edch: V\u011bdeck\u00fd pr\u016flom s etick\u00fdmi obavami Pozad\u00ed Editace gen\u016f, zejm\u00e9na pomoc\u00ed syst\u00e9mu CRISPR\/Cas9, se stala pr\u016fkopnickou technologi\u00ed v genetice. Tento n\u00e1stroj umo\u017e\u0148uje v\u011bdc\u016fm p\u0159esn\u011b upravovat sekvence…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1628],"tags":[8024,4825,4826,22818,1129,99,97],"class_list":["post-17346","post","type-post","status-publish","format-standard","hentry","category-genetics","tag-bioethics","tag-crispr","tag-gene-editing","tag-human-embryos","tag-medicine","tag-lifescienceart","tag-science"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/17346","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=17346"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/17346\/revisions"}],"predecessor-version":[{"id":17347,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/17346\/revisions\/17347"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=17346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=17346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=17346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}