Selective and cell-active inhibitors of the USP1/ UAF1 deubiquitinase complex reverse cisplatin resistance in non-small cell lung cancer cells.
Selective and cell-active inhibitors of the USP1/ UAF1 deubiquitinase complex reverse cisplatin resistance in non-small cell lung cancer cells.
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USP1/ UAF1去泛素酶复合物的选择性和细胞活性抑制剂在非小细胞肺癌细胞中反向顺铂抗性。
DOI:
10.1016/j.chembiol.2011.08.014
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发表时间:
2011-11-23
影响因子:
--
通讯作者:
Zhuang Z
中科院分区:
文献类型:
--
作者:
Chen J;Dexheimer TS;Ai Y;Liang Q;Villamil MA;Inglese J;Maloney DJ;Jadhav A;Simeonov A;Zhuang Z
Ubiquitin-specific proteases (USPs) have in recent years emerged as a promising therapeutic target class. We identified selective small-molecule inhibitors against a deubiquitinase complex, the human USP1/UAF1, through quantitative high throughput screening (qHTS) of a collection of bioactive molecules. The top inhibitors, pimozide and GW7647, inhibited USP1/UAF1 noncompetitively with a Ki of 0.5 and 0.7 μM respectively, and displayed selectivity against a number of deubiquitinases, deSUMOylase and cysteine proteases. The USP1/UAF1 inhibitors act synergistically with cisplatin in inhibiting cisplatin-resistant non-small cell lung cancer (NSCLC) cell proliferation. USP1/UAF1 represents a promising target for drug intervention because of its involvement in translesion synthesis and Fanconi anemia pathway important for normal DNA damage response. Our results support USP1/UAF1 as a potential therapeutic target and provide the first example of targeting the USP/WD40 repeat protein complex for inhibitor discovery.
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