DNA-PK inhibition by M3814 enhances chemosensitivity in non-small cell lung cancer.
10.1016/j.apsb.2021.07.029
- Author:
Manni WANG
1
;
Siyuan CHEN
1
;
Yuquan WEI
1
;
Xiawei WEI
1
Author Information
1. Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610000, China.
- Publication Type:Journal Article
- Keywords:
Cell senescence;
Chemosensitization;
DDR, DNA damage response;
DNA repair;
DNA-PK, DNA-dependent protein kinase;
DNA-PKcs, DNA-dependent protein kinase catalytic subunit;
DNA-dependent protein kinase;
DSB, DNA double-strand breaks;
Etoposide;
HR, homologous recombination;
IHC, immunohistochemistry;
LADC, lung adenocarcinoma;
LCLC, large-cell carcinoma;
LSCC, lung squamous cell carcinoma;
M3814;
NHEJ, non homologous end joining;
NSCLC, non-small cell lung cancer;
Non-small cell lung cancer;
Paclitaxel;
dsDNA, double strand DNA
- From:
Acta Pharmaceutica Sinica B
2021;11(12):3935-3949
- CountryChina
- Language:English
-
Abstract:
A significant proportion of non-small cell lung cancer (NSCLC) patients experience accumulating chemotherapy-related adverse events, motivating the design of chemosensitizating strategies. The main cytotoxic damage induced by chemotherapeutic agents is DNA double-strand breaks (DSB). It is thus conceivable that DNA-dependent protein kinase (DNA-PK) inhibitors which attenuate DNA repair would enhance the anti-tumor effect of chemotherapy. The present study aims to systematically evaluate the efficacy and safety of a novel DNA-PK inhibitor M3814 in synergy with chemotherapies on NSCLC. We identified increased expression of DNA-PK in human NSCLC tissues which was associated with poor prognosis. M3814 potentiated the anti-tumor effect of paclitaxel and etoposide in A549, H460 and H1703 NSCLC cell lines. In the four combinations based on two NSCLC xenograft models and two chemotherapy, we also observed tumor regression at tolerated doses
