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Deletion type hepatocyte growth factor has different effects on growth and c-met expression in 10 different human
Abstract:
We examined expression of c-met protein, and the mitogenic and morphologic effects of deletion type hepatocyte growth factor (dHGF) by using 10 human hepatocellular carcinoma (HCC) cell lines having different morphologic and biologic features. c-met protein was detected at varying levels in all cells, regardless of the histological grades. Among the 7 lines expressing c-met at high levels, mitogenic effects of dHGF were stimulative for 2 lines; suppressive for 3 lines; and not distinguishable for the other 2 lines. Furthermore, mitogenic effects of dHGF were different in two clonally related cell lines, having different morphologic and biologic features, even though expression of c-met protein was comparable. dHGF induced scattering of cells and morphologic changes in two lines with suppressing and unaffected growth. In the 3 lines expressing c-met at relatively low levels, no remarkable mitogenic or morphogenic effects were detected. These results suggest that the expression levels of c-met protein were not related to the differentiation levels of HCC cells, and dHGF may cause different biological effects on the cells with almost identical c-met protein expression.
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