期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 330, 期 1, 页码 142-150出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2005.02.141
关键词
stem cells; mesenchymal; differentiation; epithelial cells; lipoaspirate; tissue engineering; bio-artificial renal assist device; retinoids; ATRA; cytokeratin
Adult human stem cells are employed in novel treatments and bio-artificial devices. Recent studies have identified an abundant source of stem cells termed adipose-derived adult stem (ADAS)-cells in the subcutaneous adipose tissue. Under appropriate culture conditions ADAS-cells differentiate to various cell types, including chondrocytes, adipocytes, and smooth muscle cells. Aiming at epithelial differentiation this study investigated the effect of all-trans retinoic acid (ATRA) on human ADAS-cells. ATRA-induced cytokeratin 18 expression in ADAS-cells and nearly abolished vimentin expression as shown by Western blot. In immunofluorescence, the formation of keratin fibers in ATRA-treated ADAS-cells could be observed. The percentage of ADAS-cells being able to undergo epithelial differentiation as quantified by FACS-analysis was above 80%. Inhibition of cell growth by ATRA was shown using DAPI- and MTT-assays. ATRA can differentiate ADAS-cells toward the epithelial lineage. This finding, along with a previously described neural differentiation, shows that ADAS-cells have epithelial potential. (c) 2005 Elsevier Inc. All rights reserved.
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