ArticleCancers2026
ATR Blockade Potentiates the Effects of Genotoxic Agents In Vitro and Promotes Antitumor Immunity in a Mouse Model of Non-Small Cell Lung Cancer.
Article in Cancers, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed.
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7 authors.
Funding
Abstract
BACKGROUND/
objectivesNon-small cell lung cancer (NSCLC) is the most frequent type of lung cancer, and its main treatments include chemotherapy with genotoxic drugs and immunotherapy. Central to the cellular response to genotoxic stress is the DNA damage response (DDR) network, regulated by key kinases such as ataxia-telangiectasia mutated and Rad3-related (ATR). Herein, we tested the hypothesis that inhibition of ATR enhances the cytotoxicity of genotoxic agents and the antitumor immune response.
methodsDDR-related parameters and redox status, expressed as GSH/GSSG ratio, and apurinic/apyrimidinic lesions, were evaluated in human (A549, H1299) and murine (LLC) NSCLC cell lines after co-exposure to ATR inhibitor (AZD6738) and ultraviolet C (UVC) irradiation or cisplatin. Using a syngeneic LLC model, treatments of AZD6738 alone or in combination with cisplatin and/or anti-programmed cell death 1 antibody (anti-PD1) were examined.
resultsIn all cell lines, combined treatment with AZD6738 and cisplatin or UVC irradiation markedly decreased cell viability, DNA repair efficiency, and GSH/GSSG ratios; increased drug-induced DNA damage; and augmented apurinic/apyrimidinic lesions. In vivo, following treatment with AZD6738 and cisplatin, flow cytometry analysis performed in tumor cells revealed an increased infiltration of CD3
conclusionsThese results demonstrate that ATR blockade concurrently enhances the efficacy of genotoxic agents and immune checkpoint inhibitors, thus paving the way for combination therapies in NSCLC.
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