作者: Shinichiro Chuma , Norio Nakatsuji
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摘要: Mouse primordial germ cells (PGCs) arrive at the urogenital ridge (UGR) around 10.5 days postcoitum (dpc). They proliferate until 13.5 dpc, then enter into meiosis in female or become mitotically arrested male gonads. In this study, meiotic transition of mouse PGCs was examined vitro. Female obtained from UGRs genital ridges 10.5-11.5 dpc began to express meiosis-specific genes, Scp3 and Dmc1, after dissociation cultivation on feeder for several days. Meiotic leptotene stage confirmed by formation axial cores. Male migratory mesenteries also expressed formed cores culture, supporting hypothesis that are capable entering before arriving UGR. gp130-mediated signaling, known promote survival/growth inhibit differentiation embryonic stem cells, suppressed expression inhibited following This novel activity signaling may provide some clues understanding pluripotency mammalian germ-line and/or sex fetal cells.