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Objective:To explore the role of bone morphogenetic protein 4(BMP-4) in hepatic progenitor cells(HPCs).Methods:The effect of BMP-4 on rat hepatic oval cells was examined by using the WB-F344 rat hepatocytic epithelial stem-cell-like cell line.This hepatocytic cell line could exert various hepatocytc functions including the secretion of albumin and urea.Immunohistochemistry was used to examine the effects of BMP-4 and its antagonist,Noggin,on the proliferation and differentiation of these cells,cellular uptake and excretion of indocyanine green,the periodic acid-schiff(PAS) assay for glycogen storage and the expression of hepatic markers.Results:Our results showed for the first time that BMP-4 may acted as a potential inducer of hepatic differentiation in rat hepatic oval cells.Conclusions:This cell source offers a much-needed attractive and expandable source for future investigations of drug screening,stem cell technologies and cellular transplantation,in a society with increasing levels of liver disease and damage.
Objective: To explore the role of bone morphogenetic protein 4 (BMP-4) in hepatic progenitor cells (HPCs). Methods: The effect of BMP-4 on rat hepatic oval cells was examined by using the WB-F344 rat hepatocytic epithelial stem- Cell-like cell line. This hepatocytic cell line could exert various hepatocytc functions including the secretion of albumin and urea. Immunohistochemistry was used to examine the effects of BMP-4 and its antagonist, Noggin, on the proliferation and differentiation of these cells, cellular uptake and excretion of indocyanine green, the periodic acid-schiff (PAS) assay for glycogen storage and the expression of hepatic markers. Results: Our results showed for the first time that BMP-4 may acted as a potential inducer of hepatic differentiation in rat hepatic oval cells. Conclusions: This cell source offers a much-needed attractive and expandable source for future investigations of drug screening, stem cell technologies and cellular transplantation, in a society with increasing leve ls of liver disease and damage.