Transplantation of Chicken Primordial Germ Cells after Long-term in vitro Culture
Jenn-Fa Liou, Yu-Min Shue, Hsiao-Lung Liu, Chein Tai, Lih-Ren Chen, and Jen-Wen Shiau
The objective of this study was to evaluate the capacity of gonadal migration and characterization for chicken primordial germ cells (PGCs) after long-term in vitro culture. Chicken PGCs collected from the primitive gonads of 5.5-day-old White Leghorn chicken embryos were plated together with their own stroma cells as co-culture. The cultured PGCs began to from colonies 7-10 days after plating. The PGC-derived colonies maintained in culture up to 280 days were positively stained with antibodies specific to SSEA-1, SSEA-4, integrin α6 and integrin β1, and also strongly expressed periodic acid Schiff reaction. Their capacities of migration and colonizing in the primary gonadal ridge were further demonstrated by transferring to stage 14-15 (3 days old) recipient embryos. These results suggested that chicken PGCs maintained in long-term culture retains their capacity to express pluripotent markers and to integrate into the gonads.
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