A small-molecule compound D6 overcomes EGFR-T790M-mediated resistance in non-small cell lung cancer.

A small-molecule compound D6 overcomes EGFR-T790M-mediated resistance in non-small cell lung cancer.
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小分子化合物 D6 克服 EGFR-T790M 介导的非小细胞肺癌耐药性

DOI:
10.1038/s42003-021-02906-4
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发表时间:
2021-12-13
影响因子:
5.9
通讯作者:
Liu B
Liu B
中科院分区:
生物学2区
文献类型:
--
作者:
Tang X;Cheng L;Li G;Yan YM;Su F;Huang DL;Zhang S;Liu Z;Qian M;Li J;Cheng YX;Liu B

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非小细胞肺癌(NSCLC)是一种致命且高度流行的恶性肿瘤。通过EGFR酪氨酸激酶抑制剂(EGFR-TKI)靶向NSCLC中的活化EGFR突变,最初实现了深刻的治疗反应,但耐药性经常演变,减少了治疗选择。在此,我们提出了一种小分子化合物D 6,其选择性地抑制具有EGFR-TKI抗性T790 M-EGFR激活突变(T790 M-EGFR-AM)的NSCLC细胞中的肿瘤细胞生长和迁移,例如,L858 R/T790 M、19 Del/T790 M和L858 R/T790 M/C797 S。D 6模拟从党参根部分离的天然产物,并选择性地与T790 M-EGFR-AM竞争结合HSP 90,从而促进T790 M-EGFR-AM的泛素化依赖性蛋白酶体降解。相比之下,D 6对典型的HSP 90伴侣活性几乎没有影响,表明全身毒性低。令人鼓舞的是,D 6与厄洛替尼或奥希替尼组合显示出克服NSCLC中EGFR-TKI抗性的功效。我们的研究提出了一种通过D 6干预靶向HSP 90和T790 M-EGFR的蛋白质-蛋白质相互作用来克服NSCLC中T790 M介导的EGFR-TKI耐药性的替代策略。Tang等人提出使用小分子化合物D 6治疗EGFRTKI抗性肿瘤。作者证明了通过抑制HSP 90介导的蛋白质-蛋白质相互作用,对T790 M介导的EGFR-TKI耐药NSCLC具有强效和选择性抑制作用。
Non-small cell lung cancer (NSCLC) is a deadly and highly prevalent malignancy. Targeting activated-EGFR mutations in NSCLC via EGFR tyrosine kinase inhibitor (EGFR-TKI) initially achieves a profound therapeutic response, but resistance frequently evolves, reducing treatment options. Here, we present a small-molecule compound D6 which selectively inhibits tumor cell growth and migration in NSCLC cells with EGFR-TKI-resistant T790M-EGFR-activated mutations (T790M-EGFR-AM), e.g., L858R/T790M, 19Del/T790M and L858R/T790M/C797S. D6 mimics a natural product isolated from the roots of Codonopsis pilosula and selectively competes with T790M-EGFR-AM to bind to HSP90, thus facilitating the ubiquitination dependent proteasomal degradation of T790M-EGFR-AM. By contrast, D6 has little impact on typical HSP90 chaperone activity, suggesting low systemic toxicity. Promisingly, D6 combined with erlotinib or osimertinib shows efficacy in overcoming the EGFR-TKIs-resistance in NSCLCs. Our study raises an alternative strategy to overcome T790M-mediated EGFR-TKI resistance in NSCLC via targeting the protein–protein interaction of HSP90 and T790M-EGFR by intervention with D6. Tang et al. propose the use of a small molecule compound D6 to treat EGFRTKI resistant tumors. The authors demonstrate potent and selective inhibition of NSCLC with T790M-mediated EGFR-TKI resistance through inhibiting HSP90-mediated protein–protein interaction.
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