Elevated expression of MITF counteracts B-RAF-stimulated melanocyte and melanoma cell proliferation.
Elevated expression of MITF counteracts B-RAF-stimulated melanocyte and melanoma cell proliferation.
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MITF的表达升高抵消B-RAF刺激的黑色素细胞和黑色素瘤细胞增殖。
DOI:
10.1083/jcb.200505059
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发表时间:
2005-08-29
影响因子:
7.8
通讯作者:
Marais, R
中科院分区:
文献类型:
--
作者:
Wellbrock, C;Marais, R
The protein kinase B-RAF is a human oncogene that is mutated in ∼70% of human melanomas and transforms mouse melanocytes. Microphthalmia-associated transcription factor (MITF) is an important melanocyte differentiation and survival factor, but its role in melanoma is unclear. In this study, we show that MITF expression is suppressed by oncogenic B-RAF in immortalized mouse and primary human melanocytes. However, low levels of MITF persist in human melanoma cells harboring oncogenic B-RAF, suggesting that additional mechanisms regulate its expression. MITF reexpression in B-RAF–transformed melanocytes inhibits their proliferation. Furthermore, differentiation-inducing factors that elevate MITF expression in melanoma cells inhibit their proliferation, but when MITF up-regulation is prevented by RNA interference, proliferation is not inhibited. These data suggest that MITF is an antiproliferation factor that is down-regulated by B-RAF signaling and that this is a crucial event for the progression of melanomas that harbor oncogenic B-RAF.
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DOI:
10.1083/jcb.200410115
发表时间:
2005-01-03
期刊:
The Journal of cell biology
影响因子:
--
作者:
Loercher AE;Tank EM;Delston RB;Harbour JW
通讯作者:
Harbour JW
影响因子:
64.8
作者:
Carreira, S;Goodall, J;Goding, CR
通讯作者:
Goding, CR
影响因子:
8
作者:
Karasarides, M;Chiloeches, A;Marais, R
通讯作者:
Marais, R
影响因子:
11.2
作者:
Wellbrock, C;Ogilvie, L;Marais, R
通讯作者:
Marais, R
影响因子:
64.5
作者:
McGill, GG;Horstmann, M;Fisher, DE
通讯作者:
Fisher, DE