Down-regulation of CYLD expression by Snail promotes tumor progression in malignant melanoma.

Down-regulation of CYLD expression by Snail promotes tumor progression in malignant melanoma.
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DOI:
10.1084/jem.20082044
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发表时间:
2009-01-16
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Bosserhoff AK
Bosserhoff AK
中科院分区:
其他
文献类型:
--
作者:
Massoumi R;Kuphal S;Hellerbrand C;Haas B;Wild P;Spruss T;Pfeifer A;Fässler R;Bosserhoff AK

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高度恶性和早期转移是黑色素瘤的特征。在此,我们报道转录因子Snail1抑制黑色素瘤中肿瘤抑制因子CYLD的表达。CYLD受抑制的一个直接后果是原癌基因BCL - 3转位进入细胞核,并激活细胞周期蛋白D1和N - 钙黏蛋白启动子,导致黑色素瘤细胞增殖和侵袭。在黑色素瘤细胞中恢复CYLD的表达可降低体外的增殖和侵袭以及体内的肿瘤生长和转移。对来自患者的原发性黑色素瘤组织芯片的分析显示,Snail1的诱导与CYLD表达缺失呈负相关。重要的是,肿瘤厚度以及无进展生存期和总生存期与CYLD表达呈负相关。我们的数据表明,Snail1介导的CYLD抑制在黑色素瘤的恶性进展中起关键作用。
High malignancy and early metastasis are hallmarks of melanoma. Here, we report that the transcription factor Snail1 inhibits expression of the tumor suppressor CYLD in melanoma. As a direct consequence of CYLD repression, the protooncogene BCL-3 translocates into the nucleus and activates Cyclin D1 and N-cadherin promoters, resulting in proliferation and invasion of melanoma cells. Rescue of CYLD expression in melanoma cells reduced proliferation and invasion in vitro and tumor growth and metastasis in vivo. Analysis of a tissue microarray with primary melanomas from patients revealed an inverse correlation of Snail1 induction and loss of CYLD expression. Importantly, tumor thickness and progression-free and overall survival inversely correlated with CYLD expression. Our data suggest that Snail1-mediated suppression of CYLD plays a key role in melanoma malignancy.
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