Isolation and Maintenance in Culture of Primary Human Trophoblast from Term Placentae.

Trophoblasts are placenta-specific epithelial cells that play an essential role in conducting nutrient, gas, and waste exchange between the fetus and the mother. Primary culture of human trophoblasts from donated term placentae is an important tool to study placental functions. Currently, there is a lack of general consensus of the optimal culture conditions for maintaining term trophoblast cells in vitro. A key problem with culturing trophoblasts from term placentae is overgrowth of the trophoblasts by rapidly proliferating cellular contaminants. Recently we reported a system to culture trophoblasts from term placentae which differentiate into syncytiotrophoblast-like multinucleated cells that can be maintained in culture for at least 30 days with minimal contamination. This chapter details our optimized approach for long-term, contaminant-free in vitro culture of primary trophoblasts from term placentae.