Abstract
3-dimensional trophoblast organoids (TB-ORG) represent a reliable model for studying extravillous trophoblast (EVT) lineage formation and differentiation. However, restricted access to first trimester placentae requires alternative cell sources for establishing placental organoids. Recently, we demonstrated EVT differentiation in JEG-3-derived organoids. Consequently, we herein tested whether other commonly used trophoblastic cell lines, ACH-3P, HTR-8/SVneo, and SWAN-71 were capable of self-organizing into organoids and subsequent EVT differentiation. Notably, only ACH-3P formed organoids under stemness conditions mimicking TB-ORG architectures, and induction of EVT differentiation provoked formation of HLA-Gpos areas. Hence ACH-3P-ORGs provide another organoid model for studying controlled EVT lineage formation and differentiation.
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