Differentiation of human epidermal stem cells into fibroblasts induced by TGF-β1 in vitro
10.3760/cma.j.issn.1671-0290.2009.03.013
- VernacularTitle:β1转化生长因子体外诱导人表皮干细胞分化为成纤维细胞的初步研究
- Author:
Ling LIU
;
Minliang CHEN
;
Yonghong LEI
;
Yongxue XIE
;
Xiaobing FU
;
Tongzhu SUN
;
Taichao DU
- Publication Type:Journal Article
- Keywords:
Transforming growth factor β1 (TGF-β1);
Human epidermal stem cells;
Fi-broblast;
Differentiantion
- From:
Chinese Journal of Medical Aesthetics and Cosmetology
2009;15(3):183-187
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the correlation between human epidermal stem cell (hESCs) and hypertrophic scar or keloid. Methods Improved collagen Ⅳ-coated adhesion methods was used to isolate and culture the epidermal stem cells after neutral protease selectively digested the dermo-epidermal junctions. After the cells were cultured and expanded in vitro, and passage 3 hESCs were induced by different concentrations of TGF-β1 (0.1, 5.0, and 10.0 ng/ml). Morphological fea-tures and identification of these cells were meseasured by HE, Masson, immunohistochemical staining on the days 3 and 7, respectively. Results After induced by TGF-β1 for 3 and 7 days, the morpholo-gy of the epidermal stem cell (hESCs) was changed into fusiform shape, similar to fibroblasts. 70 % ofthe cell which was induced by TGF-β1 were blue stained in the cytoplasm by Masson stain, which is the distinctive method for collagen, suggesting collagen appeared or increased in the cells. The collagen concentrations in supernatants of hESCs were 0.4150±0.0014, 0.3380±0. 0020, and 0.3870±0.0020, much higher than that in control group (0.0780±0.0025) and normal skin fibro-blast group (0.15004±0.0051) (P<0.05). Immunohistochemical staining revealed that positive rates of these cells for anti-vimentin staining were more than (95.00±1.20)% in experiments and (5.70±0.20)% in control group. Conclusion The differentiantion of hESCs induced by TGF-β1 into fibro-blasts indicates that hESCs may play a role in the pathogenesis of hypetrophic scar and keloid.
