Identification of characteristic proteins of hepatocytes of multipotent adult progenitor cells from human bone marrow differentiating into hepatocyte-like cells with hepatocyte growth factor and fibroblast growth factor-4 in vitro
- VernacularTitle:HGF+FGF4体外定向诱导人骨髓来源的多能成体祖细胞向肝样细胞分化的特征性表型鉴定
- Author:
Lijun TANG
;
Yi GAO
;
Zhi ZHANG
- Publication Type:Journal Article
- Keywords:
multipotent adult progenitor cells;
hepatocyte growth factor;
fibroblast growth factor;
cell differentiation;
hepatocytes
- From:
Medical Journal of Chinese People's Liberation Army
2001;0(11):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the possibility of differentiation of multipotent adult progenitor cells from human bone marrow(hMAPCs) into hepatocytes with hepatocyte growth factor (HGF) and fibroblast growth factor-4 (FGF-4) in vitro to find a new cell source for liver tissue engineering. Methods (1) Harvest of the hMAPCs: The bone marrow mononuclear cells were obtained from bone marrow obtained from volunteers by gradient centrifuging. The adherent mononuclear cells were cultured. The mesenchymal stem cells(MSCs) were isolated and collected by magnetic activated cell sorting(MACS) through depletion selection by the use of CD45 and GlyA microbeads. (2) The hMAPCs were induced to differentiate with HGF(20ng/ml) +FGF-4(10ng/ml). L-02 human hepatocytes (cell lines) were used as the control, with undifferentiated hMAPCs serving as the contrast. (3)The expression of albumin (ALB), alpha fetoprotein (AFP), cytokeratin-18(CK-18), cytokeratin-19(CK-19) was detected with immunocytochemistry to identify the characters of the differentiated cells at different time, and to determine the ratio of positive cells. (4) ALB expression of the differentiated cells at different time was detected by Western blot on day 21 and 25. Results (1) The result of immunocytochemistry: The differentiated hMAPCs expressed the late markers (ALB, CK-18) of hepatocyte at all the time but did not express CK-19. The differentiated hMAPCs expressed AFP on day 7. (2) The result of Western blot assay: the differentiated cells expressed the late markers (ALB) of hepatocyte on day 21 and 35. Conclusions hMAPCs can differentiate into hepatocyte-like cells under specific inducing conditions.
