人脂肪干细胞的培养及鉴定

Isolation and identification of human adipose stem cells

目的:探讨人脂肪干细胞的分离、培养并鉴定。方法:采用胶原酶法消化人脂肪组织,培养原代脂肪干细胞,通过多种方法检测鉴定。结果:细胞贴壁生长,形态呈梭形,并呈旋涡状或放射状排列;细胞生长曲线为典型的"S"形,细胞倍增时间为26h。流式细胞仪检测结果显示CD29、CD105、CD44为阳性;CD45为阴性;成脂诱导分化的细胞经油红O染色为阳性,成骨诱导分化后茜素红染色亦为阳染。结论:通过获取人腹部脂肪组织进体外分离培养及鉴定,证实其为脂肪干细胞。

Objective To establish an effective method on isolating and identifying Human adipose stem cells（hADSCs）. Methods Collagenase digestion was adopted to isolate stem cells from human adipose tissue.These isolated cells were subcultured and passaged in vitro,the morphology and cell growth curve were characterized subsequently.Moreover,flow cytometry and multi-lineage differentiation ability were identified. Results The obtained cells with spindle-shape were adherent monolayer cells,and were arranged in whirlpool or radiation.The cell growth curve was a typical“S”shape ,indicating a 26h of doubling generation time.These cells are positive for CD29,CD105,CD44,negative for CD45 showed by Flow cytometry.The positive results of oil red and alizarin red staining also indicated that the obtained cells were pluripotent. Conclusion HADSCs could be obtained from human abodemen adipose tissue through a series of isolation and identified methods.