Differentiation of human umbilical cord mesenchymal stem cells into hepatocyte-like cells induced by liver homogenate supernatants

doi:10.3969/j.issn.2095-4344.2013.45.009

Abstract

Abstract:

BACKGROUND: Preliminary experiments have demonstrated that rat liver homogenate supernatants can induce the morphological changes of human umbilical cord mesenchymal stem cells. However, little is known about whether the induced cells have some phenotypic and functional features of hepatocytes.
OBJECTIVE: To investigate whether human umbilical cord mesenchymal stem cells have some phenotypic and functional characteristic of hepatocytes after being induced by liver homogenate supernatants.
METHODS: Passage 3 human umbilical cord mesenchymal stem cells were used and divided into control group (cells were cultured in basic culture medium) and liver homogenate supernatant group (cells were cultured in liver homogenate supernatants for 3, 5, 7 days). Meanwhile, positive control group (QSG-7701 human liver cell lines) and negative control group (simple liver homogenate supernatants) were set up. The protein and mRNA level of hepatocyte markers, alpha-fetoprotein, cytokeratin 18 and tryptophan 2,3-dioxygenase enzyme, were detected at different time points.
RESULTS AND CONCLUSION: After inducement, the stem cells of fusiform shape began to lose their sharp edges and progressively shrunk, and then they changed into hepatocyte-like cells with the morphous of triangle, polygon and anomalism shape. Compared with the control group, the protein and mRNA level of alpha-fetoprotein, cytokeratin 18 and tryptophan 2,3-dioxygenase enzyme significantly increased time dependently after inducement with liver homogenate supernatants (P < 0.01). This study demonstrated that human umbilical cord mesenchymal stem cells are able to differentiate into hepatocyte-like cells in vitro that possess some functions of liver cells.

Key words: stem cells, cell differentiation, hepatocytes, keratins

CLC Number:

R394.2

Ma Xin, Xue Gai, Liu Jian-fang, Li Jian-li, Hou Yan-ning. Differentiation of human umbilical cord mesenchymal stem cells into hepatocyte-like cells induced by liver homogenate supernatants[J]. Chinese Journal of Tissue Engineering Research, doi: 10.3969/j.issn.2095-4344.2013.45.009.

Figures/Tables 7

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