SQSTM1 is a pathogenic target of 5q copy number gains in kidney cancer.

SQSTM1 is a pathogenic target of 5q copy number gains in kidney cancer.
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DOI:
10.1016/j.ccr.2013.10.025
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发表时间:
2013-12-09
期刊:
影响因子:
50.3
通讯作者:
Kaelin WG Jr
Kaelin WG Jr
中科院分区:
医学1区
文献类型:
--
作者:
Li L;Shen C;Nakamura E;Ando K;Signoretti S;Beroukhim R;Cowley GS;Lizotte P;Liberzon E;Bair S;Root DE;Tamayo P;Tsherniak A;Cheng SC;Tabak B;Jacobsen A;Hakimi AA;Schultz N;Ciriello G;Sander C;Hsieh JJ;Kaelin WG Jr

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透明细胞肾细胞癌(ccRCC)是肾癌的最常见形式,并且通常与携带VHL肿瘤抑制基因的染色体3p的丢失、包括HIF 1A的染色体14q的丢失和染色体5q的获得有关。染色体5q上的相关靶标未知。在这里,我们发现5q扩增导致ccRCC细胞系和肿瘤中SQSTM 1癌基因的过表达。在ccRCC细胞系中SQSTM 1的过表达促进了对氧化还原应激的抗性并增加了软琼脂生长,而SQSTM 1的下调降低了对氧化还原应激的抗性,损害了细胞适应性并减少了肿瘤形成。因此,在ccRCC中放大5q的选择压力至少部分地由SQSTM 1驱动。
Clear cell renal cell carcinoma (ccRCC) is the most common form of kidney cancer and is often linked to loss of chromosome 3p, which harbors the VHL tumor suppressor gene, loss of chromosome 14q, which includes HIF1A, and gain of chromosome 5q. The relevant target(s) on chromosome 5q is not known. Here we show that 5q amplification leads to overexpression of the SQSTM1 oncogene in ccRCC lines and tumors. Overexpression of SQSTM1 in ccRCC lines promoted resistance to redox stress and increased soft agar growth while downregulation of SQSTM1 decreased resistance to redox stress, impaired cellular fitness, and decreased tumor formation. Therefore the selection pressure to amplify 5q in ccRCC is driven, at least partly, by SQSTM1.
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