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PIBF1 regulates trophoblast syncytialization and promotes cardiovascular development.

Jong-Geol LeeJung-Min YonGlobinna KimSeul-Gi LeeC-Yoon KimSeung-A CheongHyun-Yi KimJiyoung YuKyunggon KimYoung Hoon SungHyun Ju YooDong-Cheol WooJin Kyung RhoChang Hoon HaChan-Gi PackSeak Hee OhJoon Seo LimYu Mi HanEui-Ju HongJe-Kyung SeongHan-Woong LeeSang-Wook LeeKi-Up LeeChong Jai KimSang-Yoon NamYou-Sook ChoDong-Cheol Woo
Published in: Nature communications (2024)
Proper placental development in early pregnancy ensures a positive outcome later on. The developmental relationship between the placenta and embryonic organs, such as the heart, is crucial for a normal pregnancy. However, the mechanism through which the placenta influences the development of embryonic organs remains unclear. Trophoblasts fuse to form multinucleated syncytiotrophoblasts (SynT), which primarily make up the placental materno-fetal interface. We discovered that endogenous progesterone immunomodulatory binding factor 1 (PIBF1) is vital for trophoblast differentiation and fusion into SynT in humans and mice. PIBF1 facilitates communication between SynT and adjacent vascular cells, promoting vascular network development in the primary placenta. This process affected the early development of the embryonic cardiovascular system in mice. Moreover, in vitro experiments showed that PIBF1 promotes the development of cardiovascular characteristics in heart organoids. Our findings show how SynTs organize the barrier and imply their possible roles in supporting embryogenesis, including cardiovascular development. SynT-derived factors and SynT within the placenta may play critical roles in ensuring proper organogenesis of other organs in the embryo.
Keyphrases
  • type diabetes
  • metabolic syndrome
  • insulin resistance
  • pregnancy outcomes