实用肿瘤学杂志 ›› 2019, Vol. 33 ›› Issue (5): 476-480.doi: 10.11904/j.issn.1002-3070.2019.05.018

• 综述 • 上一篇    

CDK4/6抑制剂联合mTOR抑制剂在乳腺癌中的作用机制

刘尔钰, 杨昊, 梁国华, 赵晏方 综述, 赵文辉 审校   

  1. 哈尔滨医科大学附属肿瘤医院(哈尔滨 150081)
  • 发布日期:2019-11-05
  • 通讯作者: 赵文辉,E-mail:zhaowenhui1977@163.com
  • 作者简介:刘尔钰,女,(1993-),硕士研究生,从事乳腺癌内分泌耐药方面的研究。

Action for CDK4/6 inhibitors combined with mTOR inhibitors in breast cancer and its mechanism

LIU Eryu, YANG Hao, LIANG Guohua, ZHAO Yanfang, ZHAO Wenhui   

  1. Harbin Medical University Cancer Hospital,Harbin 150081,China
  • Published:2019-11-05

摘要: CDK-RB-E2F通路和PI3K-AKT-mTOR通路对乳腺癌耐药机制起到了关键作用。通过对两个通路的研究发现,在治疗激素受体阳性的乳腺癌时,CDK4/6抑制剂与内分泌药物联合使用可以提高患者的生存率,mTOR抑制剂也显示出抗肿瘤的实力。最近的研究表明,mTOR抑制剂和CDK4/6抑制剂联合使用可以进一步抑制CDK-RB-E2F通路激活,协同控制肿瘤细胞增殖。同时发现CDK4/6抑制剂耐药患者的CDK-RB-E2F通路重新激活,仍对mTOR抑制剂敏感。还有研究表明CDK4/6抑制剂和mTOR抑制剂可以通过自噬作用协同控制肿瘤的发生。本文针对两药联合在乳腺癌中的作用机制进行综述。

关键词: CDK4/6抑制剂, mTOR抑制剂, E2F, 视网膜母细胞瘤, 乳腺癌, 自噬

Abstract: Many studies indicate that the CDK-RB-E2F pathway and the PI3K-AKT-mTOR pathway play key roles in the mechanism of drug resistance in breast cancer.Through studies of two pathways,the combination of CDK4/6 inhibitors and endocrine drugs can improve the survival rate of patients with hormone receptor-positive breast cancer,and mTOR inhibitors also show the anti-tumor strength.Recent studies have shown that the combination of mTOR inhibitors and CDK4/6 inhibitors can further inhibit the activation of the CDK-RB-E2F pathway and synergistically controls tumor cell proliferation.It was also found that the CDK-RB-E2F pathway in CDK4/6 inhibitor-resistant patients was reactivated and sensitive to mTOR inhibitor.Other studies have also shown that CDK4/6 inhibitors and mTOR inhibitors can synergistically control tumorigenesis through autophagy.This article reviews several mechanisms of combination of two drugs.

Key words: CDK4/6 inhibitors, mTOR inhibitors, E2F, RB, Breast cancer, Autophagy

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