期刊
CLINICAL AND TRANSLATIONAL MEDICINE
卷 11, 期 3, 页码 -出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/ctm2.341
关键词
HR; LRRK2 inhibitor; PARP inhibitor; Rad51
资金
- Zhejiang Provincial Department of Health [2020375978]
PARP inhibitors induce HR deficiency and increase cancer cell sensitivity to treatment, while LRRK2 inhibitors can increase ovarian cancer cell sensitivity to Olaparib and are associated with HR.
PARP inhibitors induce DNA lesions, the repair of which are highly dependent on homologous recombination (HR), and preferentially kill HR- deficient cancers. However, cancer cells have developed several mechanisms to transform HR and confer drug resistance to PARP inhibition. Therefore, there is a great clinical interest in exploring new therapies that induce HR deficiency (HRD), thereby sensitizing cancer cells to PARP inhibitors. Here, we found that GSK2578215A, a high-selective and effective leucine-rich repeat kinase 2 (LRRK2) inhibitor, or LRRK2 depletion suppresses HR preventing the recruitment of RAD51 to DNA damage sites through disruption of the interaction of RAD51 and BRCA2. Moreover, LRRK2 inhibition or depletion increases the susceptibility of ovarian cancer cells to Olaparib in vitro and in vivo. In clinical specimens, LRRK2 high expression is high related with advanced clinical characteristics and poor survival of ovarian cancer patients. All these findings indicate ovarian cancers expressing high levels of LRRK2 are more resistant to treatment potentially through promoting HR. Furthermore, combination treatment with an LRRK2 and PARP inhibitor may be a novel strategy to improve the effectiveness of LRRK2 expression ovarian cancers.
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