Hypoxia-inducible factor 1{alpha} is a new target of microphthalmia-associated transcription factor (MITF) in melanoma cells.

Hypoxia-inducible factor 1{alpha} is a new target of microphthalmia-associated transcription factor (MITF) in melanoma cells.
复制标题

DOI:
10.1083/jcb.200501067
复制
发表时间:
2005-07-04
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Ballotti R
Ballotti R
中科院分区:
其他
文献类型:
--
作者:
Buscà R;Berra E;Gaggioli C;Khaled M;Bille K;Marchetti B;Thyss R;Fitsialos G;Larribère L;Bertolotto C;Virolle T;Barbry P;Pouysségur J;Ponzio G;Ballotti R

文献摘要

参考文献

被引文献

相似文献

在黑素细胞和黑色素瘤细胞中,α-黑素细胞刺激素(α-MSH)通过cAMP途径诱导大量的生物反应,控制黑素细胞的分化,影响黑色素瘤的发生和易感性。在这项工作中,我们证明cAMP以黑素细胞特异性的方式转录激活HIF1a基因,并增加功能性低氧诱导因子1α(HIF1α)蛋白的表达,从而刺激血管内皮生长因子的表达。有趣的是,我们报道了黑素细胞特异性转录因子,小眼球相关转录因子(MITF),与HIF1a启动子结合并强烈刺激其转录活性。此外,MITF的“沉默”消除了cAMP对HIF1a表达的影响,而MITF在人黑色素瘤细胞中的过表达足以刺激HIF1a的mRNA。我们的数据表明HIF1a是一个新的MITF靶基因,MITF介导了HIF1a在黑素细胞和黑色素瘤细胞中的cAMP刺激。重要的是,我们提供的结果表明,HIF1在这个细胞系统中发挥着促进生存的作用。因此,我们得出结论,α-MSH/cAMP通路,以MITF为信号转导,以HIF1α为靶点,可能有助于黑色素瘤的进展。
In melanocytes and melanoma cells α-melanocyte stimulating hormone (α-MSH), via the cAMP pathway, elicits a large array of biological responses that control melanocyte differentiation and influence melanoma development or susceptibility. In this work, we show that cAMP transcriptionally activates Hif1a gene in a melanocyte cell–specific manner and increases the expression of a functional hypoxia-inducible factor 1α (HIF1α) protein resulting in a stimulation of Vegf expression. Interestingly, we report that the melanocyte-specific transcription factor, microphthalmia-associated transcription factor (MITF), binds to the Hif1a promoter and strongly stimulates its transcriptional activity. Further, MITF “silencing” abrogates the cAMP effect on Hif1a expression, and overexpression of MITF in human melanoma cells is sufficient to stimulate HIF1A mRNA. Our data demonstrate that Hif1a is a new MITF target gene and that MITF mediates the cAMP stimulation of Hif1a in melanocytes and melanoma cells. Importantly, we provide results demonstrating that HIF1 plays a pro-survival role in this cell system. We therefore conclude that the α-MSH/cAMP pathway, using MITF as a signal transducer and HIF1α as a target, might contribute to melanoma progression.
DOI: 10.1083/jcb.134.3.747
发表时间: 1996-08
影响因子: 7.8
作者:
Bertolotto, C;Bille, K;Ortonne, JP;Ballotti, R
通讯作者: Ballotti, R
DOI: 10.1038/nature03269
发表时间: 2005-02-17
期刊: NATURE
影响因子: 64.8
作者:
Carreira, S;Goodall, J;Goding, CR
通讯作者: Goding, CR
DOI: 10.1016/0092-8674(93)90429-t
发表时间: 1993-07-30
期刊: CELL
影响因子: 64.5
作者:
HODGKINSON, CA;MOORE, KJ;ARNHEITER, H
通讯作者: ARNHEITER, H
DOI: 10.1046/j.1523-1747.1998.00378.x
发表时间: 1998-11-01
影响因子: 6.5
作者:
Bielenberg, DR;Bucana, CD;Fidler, IJ
通讯作者: Fidler, IJ
DOI: 10.1038/sj.cdd.4401475
发表时间: 2004-10-01
影响因子: 12.4
作者:
Larribere, L;Khaled, M;Bertolotto, C
通讯作者: Bertolotto, C