Temozolomide-perillyl alcohol conjugate downregulates O(6)-methylguanin DNA methltransferase via inducing ubiquitination-dependent proteolysis in non-small cell lung cancer.

Temozolomide-perillyl alcohol conjugate downregulates O(6)-methylguanin DNA methltransferase via inducing ubiquitination-dependent proteolysis in non-small cell lung cancer.
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替莫唑胺-紫苏醇缀合物通过诱导非小细胞肺癌中的泛素化依赖性蛋白水解来下调 O6-甲基鸟嘌呤 DNA 甲基转移酶。

DOI:
10.1038/s41419-017-0193-2
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发表时间:
2018-02-09
影响因子:
9
通讯作者:
Song X
Song X
中科院分区:
生物学1区
文献类型:
--
作者:
Song X;Xie L;Chang M;Geng X;Wang X;Chen TC;Song X

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DNA修复酶O6-甲基鸟嘌呤-DNA-甲基转移酶(MGMT)能够清除烷化剂O6-Meg的产物,是肿瘤对替莫唑胺(TMZ)耐药的核心决定因素。替莫唑胺-紫苏醇结合物(TMZ-POH)是一种基于TMZ和POH结合物的新型TMZ类似物,在多种癌症类型中显示出强大的抗癌活性,但与TMZ和其他烷化剂不同,即使在MGMT高表达的细胞中似乎也不具有化疗耐药性。在本研究中,我们证实TMZ-POH通过蛋白酶体途径抑制MGMT,这种抑制是其对非小细胞肺癌(NSCLC)细胞毒性作用的一个重要因素。
The DNA repair enzyme O6-methylguanin-DNA-methltransferase (MGMT) is able to remove products of alkylating agent such as O6-meG and emerges as a central determinant of cancer resistance to temozolomide (TMZ). Temozolomide–perillyl alcohol conjugate (TMZ–POH), a novel TMZ analog developed based on the conjugation of TMZ and POH, displayed strong anticancer potency in multiple cancer types, but seemed not to experience the chemoresistance even in cells with high MGMT expression unlike TMZ and other alkylating agents. In this study, we demonstrated TMZ–POH inhibited MGMT dependent on proteasomal pathway and this inhibition is a significant factor in its toxic effect in the non-small cell lung cancer (NSCLC) cells.
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发表时间: 2005-03-10
影响因子: 158.5
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