In contrast, PGC-like cells (PGCLCs) contribute to mid-gestation chimaeras. This indicates that naive pluripotency is more accessible in PGCLCs than with their in vivo counterparts.
Apoptosis-deficient PGCs acquire morphological characteristics of naive pluripotency and ICM outgrowths can be expanded and newly derived ESCs can be established. PGC-ESCs are morphologically indistinguishable from host ESCs.
We injected migratory PGCs (E8.5-E9.5) into 8-cell stage embryos. Injected PGCs can survive, proliferate, and integrate within the host inner cell mass. PGCs are identify by Oct4ΔPE-GFP reporter.