Modulation of c-myc expression by transforming growth factor beta 1 in human hepatoma cell lines.

Modulation of c-myc expression by transforming growth factor beta 1 in human hepatoma cell lines.
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DOI:
10.1111/j.1349-7006.1990.tb02552.x
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发表时间:
1990-03
期刊:
Japanese journal of cancer research : Gann
影响因子:
--
通讯作者:
Tarui S
Tarui S
中科院分区:
其他
文献类型:
--
作者:
Ito N;Kawata S;Tamura S;Takaishi K;Saitoh R;Tarui S

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在无血清条件下研究了转化生长因子β1(TGF-β1)对人肝癌细胞系PLC/PRF/5和Mahlavu细胞增殖的影响。通过加入TGF-β1(0.5 - 4.0 ng/ml),PLC/PRF/5细胞中的DNA合成受到强烈抑制,但Mahlavu细胞中的DNA合成保持不变。此外,在PLC/PRF/5细胞中加入TGF-β1可抑制c-myc mRNA的表达,但在Mahlavu细胞中则不然。这些结果表明,TGF-β1可能部分通过调节c-myc表达来调节细胞生长,尽管没有直接证据表明c-myc表达与TGF-β1介导的DNA合成真正相关。
The effects of transforming growth factor β1 (TGF‐β1) on cell proliferation of human hepatoma cell lines, PLC/PRF/5 and Mahlavu, were investigated under serum‐free conditions. DNA synthesis was strongly inhibited in the PLC/PRF/5 cells by addition of TGF‐β1 (0.5 to 4.0 ng/ml), but remained unchanged in the Mahlavu cells. Also the expression of c‐myc mRNA was suppressed by the addition of TGF‐β1 in the PLC/PRF/5 cells but not in the Mahlavu cells. These results indicate that TGF‐β1 might regulate cell growth, in part, by modulating c‐myc expression, although there is no direct proof that c‐myc expression is really relevant to DNA synthesis mediated by TGF‐β1.
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