Effects of leptin on proliferation and differentiation of human preadipocyte
10.3760/cma.j.issn.1671-0290.2010.03.014
- VernacularTitle:瘦素对人前脂肪细胞增殖及分化的影响
- Author:
Xiaoliang YANG
;
Guohui WU
;
Xiaolin LI
;
Rui ZENG
- Publication Type:Journal Article
- Keywords:
Leptin;
Preadipocyte;
Proliferation;
Differentiation
- From:
Chinese Journal of Medical Aesthetics and Cosmetology
2010;16(3):187-190
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the effects of leptin on the proliferation and differentiation of human preadipocyte in vitro, and to explore the possible mechanism of the generation of obesity regulated by leptin. Methods The human preadipocytes were isolated from human subcutaneous adipose tissue of abdomen and cultured in vitro. The effects of leptin (0-1 000 ng/ml) on the proliferation, lipid accumulation and the mRNA expression of PPAR-γ2 and C/EBP-α, which are the differentiation and transcription factor of human preadipocyte, were analyzed by the methods of MTT, cell counting, extracting stained intracytoplasmic lipid with oil red O and RT-PCR. Results Leptin (1 000 ng/ml) could stimulate the proliferation, lipid accumulation and the mRNA expression of PPAR-γ2 and C/EBP-α (P<0. 05). There were not obvious effects on the proliferation and lipid accumulation in the groups of lower (10 ng/ml) and common (100 ng/ml) concentration (P>0. 05). Conclusion Leptin in higher concentration can stimulate the proliferation and differentiation of preadipocye in vitro, which indicates that leptin may regulate the generation of obesity through acting on the proliferation and differentiation of preadipocyte at the pathologic state of leptin resistance and high leptin concentration in serum.
