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| <span style="font-size:150%">'''News - Thalidomide Molecular Mechanism shown in Zebrafish</span>
| <span style="font-size:150%">'''News - Complete human day 14 post-implantation embryo models from naïve Embryonic Stem Cells'''</span>
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| valign=top|[[File:Thalidomide destabilizes CD147.jpg|300px|left|alt=Thalidomide destabilizes CD147|link=Abnormal Development - Thalidomide]]  
| valign=top|[[File:Stage6 bf03.jpg|thumb|150px|alt=Carnegie Stage 6 Embryo|Carnegie Stage 6 Embryo]]


PMID 27294876 | [http://www.nature.com/nm/journal/vaop/ncurrent/full/nm.4128.html Nat Med.]
This recent Nature paper{{#pmid:37673118|PMID37673118}} describes the use of naïve human Embryonic Stem Cells to recapitulate the early stages of human development.


Thalidomide (and derivatives lenalidomide and pomalidomide) are treatments for hematologic malignancies, [http://www.omim.org/entry/254500 multiple myeloma] (MM) and del(5q) [http://www.omim.org/entry/614286 myelodysplastic syndrome] (MDS). Cereblon (CRBN) is the primary target for both the anticancer and teratogenic effects, and it promotes the maturation of CD147 ([[Abnormal Development - Thalidomide#CD147 (Basigin)|also known as Basigin]]) a member of the immunoglobulin superfamily).
"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)."


Zebrafish knockdown of CD147 was shown to match the teratogenic effects of thalidomide exposure.
:'''Links:''' {{stem cells}} | Carnegie stage {{CS6}}


:'''Links:''' [[Abnormal Development - Thalidomide]] | [[Zebrafish Development]]
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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
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
  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.
Older News Articles  
Older News Articles - Climate Change Abnormal Development | Air Pollution | Rare Sesquizygotic Twinning | Australia's mothers and babies 2017 | Spinal Muscular Atrophy Screening | Australian 2018 Pregnancy Care Guidelines | CRISPR | Ronan O’Rahilly