人胚胎成纤维细胞与小鼠胚胎成纤维细胞生物学特性比较

探讨人胚胎成纤维细胞用于人胚胎干细咆体外长期培养的可行性，以含10％胎牛血清的DMEM(低糖)溶液为培养基，对人胚胎成纤维细胞的生长形态、对胰酶的敏感性、生长曲线及细胞周期进行研究，并与小鼠胚胎成纤维细胞作比较。结果显示，人胚胎成纤维细胞和小鼠胚胎成纤维细胞在体外均为贴壁生长型细胞，与小鼠胚胎成纤维细胞相比，人胚胎成纤维细胞生长更旺盛，且细胞寿命更长；在室温条件下，对0．25％胰酶更敏感，消化时间不宜超过3min。提示人胚胎成纤维细胞不仅在生长状况上与小鼠胚胎成纤维细胞类似，而且作为人胚胎干细胞体外长期培养的饲养层，在使用期限上优于后者，值得进一步研究。

The Comparison of Biologic Character Between Mouse Embryonic Fibroblast and Human Embryonic Fibroblast

To evaluate the feasibility of using human embryonic fibroblast(HEF) as feeder layer in the culture of human embryonic stem(ES)cells in vitro, we investigated the morphology, the sensitivity to 0.25% trypsin, the growth curve and cell cycle of HEF with DMEM(low glucose)+10%FBS used as culture medium, and then we compared HEF with mouse embryonic fibroblast (MEF). The results showed that both HEF and MEF are adherent cells in vitro, and HEF has longer life span and better growth ability than MEF. In room temperature, HEF is more sensitive to 0.25% trypsin. Our research suggested that HEF can be used as feeder layer in culture of ES cells. HEF has longer service life than MEF and is worthy to be studied further.