VHL loss of function and its impact on oncogenic signaling networks in clear cell renal cell carcinoma.

VHL loss of function and its impact on oncogenic signaling networks in clear cell renal cell carcinoma.
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DOI:
10.1016/j.biocel.2008.09.024
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发表时间:
2009-04
影响因子:
4
通讯作者:
Bottaro, Donald P.
Bottaro, Donald P.
中科院分区:
生物学2区
文献类型:
--
作者:
Linehan, W. Marston;Rubin, Jeffrey S.;Bottaro, Donald P.

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von Hippel-Lindau肿瘤抑制基因功能缺失发生在家族性和大多数散发性透明细胞肾细胞癌中,导致控制细胞增殖、代谢、侵袭和血管生成的基因表达异常。功能丧失导致肿瘤发生的分子机制尚未完全确定。von Hippel-Lindau基因产物是泛素连接酶复合物的一部分,该复合物靶向缺氧诱导因子,用于多泛素化和蛋白酶体降解,将缺氧反应基因与肾细胞癌的发生联系起来。von Hippel-Lindau基因功能的丧失也会促进细胞对肝细胞生长因子的侵袭,肝细胞生长因子是肾脏发育和肾脏稳态的重要调节因子。增加的细胞侵袭性是由另一个泛素连接酶靶点介导的,与肾细胞癌的分子发病机制相关:β-连环蛋白。这一发现和其他关于肾癌发生的最新见解暗示了肿瘤发生、肿瘤侵袭和转移过程中趋同的发育和稳态信号通路。
Loss of von Hippel-Lindau tumor suppressor gene function occurs in familial and most sporadic clear cell renal cell carcinoma, resulting in the aberrant expression of genes that control cell proliferation, metabolism, invasion and angiogenesis. The molecular mechanisms by which loss of function leads to tumorigenesis are not yet fully defined. The von Hippel-Lindau gene product is part of an ubiquitin ligase complex that targets hypoxia inducible factors for polyubiquitination and proteasomal degradation, linking hypoxia response genes to renal cell carcinoma oncogenesis. Loss von Hippel-Lindau gene function also promotes cell invasiveness in response to hepatocyte growth factor, an important regulator of kidney development and renal homeostasis. Increased cell invasiveness is mediated by another ubiquitin ligase target with relevance to the molecular pathogenesis of renal cell carcinoma: β-catenin. This discovery and other recent insights into kidney cancer oncogenesis implicate convergent developmental and homeostatic signaling pathways in tumorigenesis, tumor invasiveness and metastasis.
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