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Defective placentation is the underlying cause of various pregnancy complications, such as severe intrauterine growth restriction and preeclampsia. However, studies on human placental development are hampered by the lack of a self-renewing in vitro model that would recapitulate formation of trophoblast progenitors and differentiated subtypes, syncytiotrophoblast (STB) and invasive extravillous trophoblast...
The tissue-specific basic helix-loop-helix protein Hand1 is essential for the formation of trophoblast giant cells of the murine placenta. In humans, Hand1 is detectable in trophoblastic tumour cells suggesting an equivalent role in trophoblast differentiation. To understand its mode of expression we have cloned and characterized the human Hand1 gene promoter. Primer extension analyses suggest that...
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