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Latest revision as of 16:10, 8 September 2023

News - Complete human day 14 post-implantation embryo models from naïve Embryonic Stem Cells

Carnegie Stage 6 Embryo

This recent Nature paper^[1] describes the use of naïve human Embryonic Stem Cells to recapitulate the early stages of human development.

"The ability to study human post-implantation development remains limited due to ethical and technical challenges associated with intrauterine development after implantation....only genetically unmodified human naïve human ES cells...recapitulate the organization of nearly all known lineages and compartments of post-implantation human embryos including epiblast, hypoblast, extra-embryonic mesoderm, and trophoblast surrounding the latter layers...These human complete SEMs demonstrated developmental growth dynamics that resemble key hallmarks of post-implantation stage embryogenesis up to 13-14 days post-fertilization (dpf) (Carnegie stage 6a)."

Links: stem cells | Carnegie stage 6

↑ Oldak B, Wildschutz E, Bondarenko V, Comar MY, Zhao C, Aguilera-Castrejon A, Tarazi S, Viukov S, Pham TXA, Ashouokhi S, Lokshtanov D, Roncato F, Ariel E, Rose M, Livnat N, Shani T, Joubran C, Cohen R, Addadi Y, Chemla M, Kedmi M, Keren-Shaul H, Pasque V, Petropoulos S, Lanner F, Novershtern N & Hanna JH. (2023). Complete human day 14 post-implantation embryo models from naïve ES cells. Nature , , . PMID: 37673118 DOI.

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[PMID37673118-1] Oldak B, Wildschutz E, Bondarenko V, Comar MY, Zhao C, Aguilera-Castrejon A, Tarazi S, Viukov S, Pham TXA, Ashouokhi S, Lokshtanov D, Roncato F, Ariel E, Rose M, Livnat N, Shani T, Joubran C, Cohen R, Addadi Y, Chemla M, Kedmi M, Keren-Shaul H, Pasque V, Petropoulos S, Lanner F, Novershtern N & Hanna JH. (2023). Complete human day 14 post-implantation embryo models from naïve ES cells. Nature , , . PMID: 37673118 DOI.

[1]

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-{| width=700px|
+{| width=800px|
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-| <span style="font-size:150%">'''News - CRISPR Gene Editing'''</span>
+| <span style="font-size:150%">'''News - Complete human day 14 post-implantation embryo models from naïve Embryonic Stem Cells'''</span>
 |-bgcolor="F5FAFF"
-| valign=top| [[File:CRISPR Cas9 interaction with target DNA.jpg|250px|right|alt=CRISPR Cas9 interaction with target DNA|link=Molecular_Development_-_Genetics#CRISPR]]
+| valign=top|[[File:Stage6 bf03.jpg|thumb|150px|alt=Carnegie Stage 6 Embryo|Carnegie Stage 6 Embryo]]
-It has been reported (but not confirmed by publication) that USA scientists have [https://www.technologyreview.com/s/608350/first-human-embryos-edited-in-us/amp/ gene-edited embryos using CRISPR]. This follows on from an earlier 2015 published work ([https://www.ncbi.nlm.nih.gov/pubmed/25894090 PMID 25894090]) from China using the same technique [http://www.nature.com/news/chinese-scientists-genetically-modify-human-embryos-1.17378 see Nature 22 April 2015] and a more recent 2017 paper ([https://www.ncbi.nlm.nih.gov/pubmed/?term=28251317 PMID 28251317]).
+This recent Nature paper{{#pmid:37673118|PMID37673118}} describes the use of naïve human Embryonic Stem Cells to recapitulate the early stages of human development.
+"The ability to study human post-implantation development remains limited due to ethical and technical challenges associated with intrauterine development after implantation....only genetically unmodified human naïve human ES cells...recapitulate the organization of nearly all known lineages and compartments of post-implantation human embryos including epiblast, hypoblast, extra-embryonic mesoderm, and trophoblast surrounding the latter layers...These human complete SEMs demonstrated developmental growth dynamics that resemble key hallmarks of post-implantation stage embryogenesis up to 13-14 days post-fertilization (dpf) (Carnegie stage 6a)."
-'''About CRISPR'''
+:'''Links:''' {{stem cells}} | Carnegie stage {{CS6}}
-The CRISPR/Cas9-mediated gene editing system was derived from the adaptive immune system evolved in bacteria to defend against invading plasmids and viruses.
+<references/>
+{| class="wikitable mw-collapsible mw-collapsed"
-:'''Links:''' [[Molecular_Development_-_Genetics#CRISPR|CRISPR]] | [[Molecular_Development_-_Genetics|Genetics]]
+! Older News Articles &nbsp;
 |-
-|
+| [[Template_talk:Main_Page_News|'''Older News Articles''']] - [[Template_talk:Main_Page_News#January|Climate Change Abnormal Development]] | [[Template_talk:Main_Page_News#December|Air Pollution]] | [[Template_talk:Main_Page_News#February|Rare Sesquizygotic Twinning]] | [[Template_talk:Main_Page_News#June|Australia's mothers and babies 2017]] | [[Template_talk:Main_Page_News#October|Spinal Muscular Atrophy Screening]] | [[Template_talk:Main_Page_News#February|Australian 2018 Pregnancy Care Guidelines]] | [[Template_talk:Main_Page_News#July|CRISPR]] | [[Template_talk:Main_Page_News#June|Ronan O’Rahilly]]
-:[[Template_talk:Main_Page_News|'''Older News Articles''']] - [[Template_talk:Main_Page_News#February|Gestational Diabetes]] | [[Template_talk:Main_Page_News#September|Kyoto eBook]] | [[Template_talk:Main_Page_News#August|Dolly's sisters live on!]] | [[Template_talk:Main_Page_News#June|Thalidomide in Zebrafish]]  | [[Template_talk:Main_Page_News#March|Human pancreas stem cells]] | [[Template_talk:Main_Page_News#January|Oral contraceptive no risk of major birth defects]] | [[Template_talk:Main_Page_News#September|Maternal Malaria Neurovascular Development Effects]] | [[Template_talk:Main_Page_News#June|Oocyte/Spermatozoa fate decision]] [[Template_talk:Main_Page_News#April|Rubella eliminated in the Americas]] | [[Template_talk:Main_Page_News#February|Three-person embryos]]
+|}
 |}