{"id":20017,"date":"2023-09-08T15:00:00","date_gmt":"2023-09-08T15:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/benin\/politique\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule"},"modified":"2023-09-09T21:50:15","modified_gmt":"2023-09-09T21:50:15","slug":"des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule","title":{"rendered":"Des simili-embryons humains cr\u00e9\u00e9s en laboratoire sans sperme ni ovule"},"content":{"rendered":"

Africa-Press – Benin. <\/strong><\/span>Des scientifiques ont de\u0301veloppe\u0301 des structures similaires a\u0300 l’embryon humain sans sperme ni ovule, un nouvel espoir pour la recherche sur les fausses couches et les malformations conge\u0301nitales qui soule\u0300vent ne\u0301anmoins des questions e\u0301thiques.<\/b><\/p>\n

Un groupe de chercheurs a publie\u0301 mercredi ses recherches dans le journal scientifique \u00ab Nature \u00bb, de\u0301crivant comment ils ont re\u0301ussi a\u0300 cre\u0301er un simili-embryon a\u0300 partir de cellules souches embryonnaires humaines.<\/p>\n

Des scientifiques ont salue\u0301 ces travaux comme une avance\u0301e \u00ab impressionnante \u00bb qui pourrait permettre de percer les secrets des premiers jours de la grossesse, lorsque les e\u0301checs sont les plus fre\u0301quents.<\/p>\n

Ces re\u0301sultats continuent d’alimenter le de\u0301bat sur des re\u0300gles e\u0301thiques plus claires sur le de\u0301veloppement en laboratoire de mode\u0300les embryonnaires humains.<\/p>\n

Le groupe de chercheurs, mene\u0301 par le Palestinien Jacob Hanna de l’Institut de Sciences Weizmann en Israe\u0308l, a produit des simili-embryons humains a\u0302ge\u0301s de 14 jours, la limite le\u0301gale pour ce genre de recherches dans beaucoup de pays, jusqu’au moment ou\u0300 des organes comme le cerveau commencent a\u0300 se de\u0301velopper.<\/p>\n

Les chercheurs ont assure\u0301 que leurs travaux diffe\u0301raient des pre\u0301ce\u0301dents sur le sujet, parce qu’ils utilisent des cellules modifie\u0301es chimiquement pluto\u0302t que ge\u0301ne\u0301tiquement, et parce que leurs mode\u0300les, avec ve\u0301sicule vitelline et cavite\u0301 amniotique, ressemblent plus a\u0300 des embryons humains.<\/p>\n

Ces similarite\u0301s peuvent rendre ces mode\u0300les plus efficaces pour la recherche sur les fausses couches, les malformatiques ge\u0301nitales et la ste\u0301rilite\u0301, a de\u0301clare\u0301 James Briscoe, de l’Institut Francis-Crick, a\u0300 Londres.<\/p>\n

La structure cre\u0301e\u0301e \u00ab semble produire tous les diffe\u0301rents types de cellules qui forment les tissus a\u0300 ce stade pre\u0301coce du de\u0301veloppement \u00bb, a-t-il indique\u0301.<\/p>\n

Cette e\u0301tude \u00ab est un pas pour comprendre une pe\u0301riode du de\u0301veloppement humain qui conduit a\u0300 l’e\u0301chec de beaucoup de grossesses, et qui a toujours e\u0301te\u0301 tre\u0300s difficile a\u0300 e\u0301tudier jusqu’a\u0300 maintenant \u00bb.<\/p>\n

Les chercheurs derrie\u0300re l’e\u0301tude et d’autres scientifiques ont insiste\u0301 sur le fait que les structures cre\u0301e\u0301es ne devaient pas e\u0302tre conside\u0301re\u0301es comme des embryons humains.<\/p>\n

Elles \u00ab ressemblent fortement, mais ne sont pas identiques \u00bb a\u0300 des embryons humains, a indique\u0301 l’e\u0301tude.<\/p>\n

Ces recherches et d’autres travaux re\u0301cents montrent que \u00ab les mode\u0300les d’embryons humains deviennent plus sophistique\u0301s et plus proches de ce qu’il peut arriver durant un de\u0301veloppement normal \u00bb, a de\u0301clare\u0301 Darius Widera, un expert en biologie cellulaire a\u0300 l’universite\u0301 anglaise de Reading.<\/p>\n

Le texte souligne \u00ab qu’un cadre re\u0301glementaire robuste est plus ne\u0301cessaire que jamais \u00bb, a-t-il insiste\u0301.<\/p>\n

Pour plus d’informations et d’analyses sur la Benin<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Benin. Des scientifiques ont de\u0301veloppe\u0301 des structures similaires a\u0300 l’embryon humain sans sperme ni ovule, un nouvel espoir pour la recherche sur les fausses couches et les malformations conge\u0301nitales qui soule\u0300vent ne\u0301anmoins des questions e\u0301thiques. Un groupe de chercheurs a publie\u0301 mercredi ses recherches dans le journal scientifique \u00ab Nature \u00bb, de\u0301crivant comment […]<\/p>\n","protected":false},"author":82,"featured_media":20016,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,50,45],"class_list":["post-20017","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-benin","tag-benin"],"yoast_head":"\nDes simili-embryons humains cr\u00e9\u00e9s en laboratoire sans sperme ni ovule - B\u00e9nin<\/title>\n<meta name=\"description\" content=\"Des scientifiques ont de\u0301veloppe\u0301 des structures similaires a\u0300 l'embryon humain sans sperme ni ovule, un nouvel espoi ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des simili-embryons humains cr\u00e9\u00e9s en laboratoire sans sperme ni ovule\" \/>\n<meta property=\"og:description\" content=\"Des scientifiques ont de\u0301veloppe\u0301 des structures similaires a\u0300 l'embryon humain sans sperme ni ovule, un nouvel espoi ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule\" \/>\n<meta property=\"og:site_name\" content=\"B\u00e9nin\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-08T15:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-09T21:50:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/benin\/sites\/46\/2023\/09\/sm_1694198442.911425.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"720\" \/>\n\t<meta property=\"og:image:height\" content=\"478\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/benin\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Des simili-embryons humains cr\u00e9\u00e9s en laboratoire sans sperme ni ovule\",\"datePublished\":\"2023-09-08T15:00:00+00:00\",\"dateModified\":\"2023-09-09T21:50:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule\"},\"wordCount\":488,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/benin\/sites\/46\/2023\/09\/sm_1694198442.911425.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Benin\",\"B\u00e9nin\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule\",\"url\":\"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/des-simili-embryons-humains-crees-en-laboratoire-sans-sperme-ni-ovule\",\"name\":\"Des simili-embryons humains cr\u00e9\u00e9s en laboratoire sans sperme ni ovule - 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