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Wang YF, Nan X, Li YH, Zhang R, Yan F, Yue W, Pei XT: [Differentiation of rat bone marrow derived Thy-1+ beta2M- cells into hepatocytes]. Zhonghua Xue Ye Xue Za Zhi. 2005 Feb;26(2):69-73.
OBJECTIVE: To investigate the differentiation of bone marrow derived Thy-1 (+) beta (2) M (-) cells (BDTC) into mature and functional liver cells and its mechanism. METHODS: BDTC were cocultured with allyl alcohol (AA)-injured hepatocytes and cultured alone in conditional medium containing HGF and bFGF, respectively. BDTC morphologic transformation was observed with phase-contrast and electron-microscopy. Hepatocyte-specific gene expression in cultured BDTC was identified by immunocytochemistry and reverse transcription-polymerase chain reaction (RT-PCR). Indocyanine green (ICG) ingestion/excretion and urea, albumin production were carried out to evaluate hepatocyte-related function. RESULTS: Some BDTC derived hepatocyte-like cells with high nuclear to cytoplasmic ratio containing mono- or multi-nuclei and abundant mitochondria, endoplasmic reticulum and glycogenic granules appeared after 7-day culture in both the two culture systems. These cells expressed hepatocyte-specific genes (AFP, OV-6, CK18, etc.), and possessed functions of ICG uptake, albumin production and ammonium metabolism. CONCLUSION: Rat BDTCs could differentiate into mature and functional liver cells in special stimulation systems. Moreover, these differentiations were realized by "transdifferentiation", and might dispense with "cell fusion". |
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