ArticleInternational journal of oncology2020
Inhibition of DNA‑PK by gefitinib causes synergism between gefitinib and cisplatin in NSCLC.
Article in International journal of oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 5 citations in OpenAlex.
- Sulfated Polysaccharide-Rich Fractions from Spirulina Platensis (SPPs) Exert Multi-Target Anticancer Activity in Non-Small Cell Lung Cancer (NSCLC) Cells.Pharmaceuticals (Basel, Switzerland) · 2026Article
- Panduratin A fromInternational journal of molecular sciences · 2025Article
- Strategies and influencing factors for the treatment of advanced non-small cell lung cancer based on epidermal growth factor receptor tyrosine kinase inhibitors: a narrative review.Translational cancer research · 2024Review
- An mTOR and DNA-PK dual inhibitor CC-115 hinders non-small cell lung cancer cell growth.Cell death discovery · 2022Article
- The efficacy of PI3Kγ and EGFR inhibitors on the suppression of the characteristics of cancer stem cells.Scientific reports · 2022Article
Corrections and comments
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Authors and funding
19 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Lung cancer has the highest incidence and mortality rates among the malignant tumor types worldwide. Platinum‑based chemotherapy is the main treatment for advanced non‑small‑cell lung cancer (NSCLC), and epidermal growth factor receptor‑tyrosine kinase inhibitors (EGFR‑TKIs) have greatly improved the survival of patients with EGFR‑sensitive mutations. However, there is no standard therapy for treating patients who are EGFR‑TKI resistant. Combining EGFR‑TKIs and platinum‑based chemotherapy is the most popular strategy in the clinical practice. However, the synergistic mechanism between EGFR‑TKIs and platinum remains unknown. Therefore, the aim of the present study was to determine the synergistic mechanism of gefitinib (an EGFR‑TKI) and cisplatin (a main platinum‑based drug). MTT assay, apoptosis analysis, tumorsphere formation and an orthotropic xenograft mouse model were used to examine the combination effects of gefitinib and cisplatin on NSCLC. Co‑immunoprecipitation and immunofluorescence were used to identify the underlying mechanism. It was found that gefitinib could selectively inhibit EGFR from entering the nucleus, decrease DNA‑PK activity and enhance the cytotoxicity of cisplatin on NSCLC. Collectively, the results suggested that inhibition of DNA‑dependent protein kinase by gefitinib may be due to the synergistic mechanism between gefitinib and cisplatin. Thus, the present study provides a novel insight into potential biomarkers for the selection of combination therapy of gefitinib and cisplatin.
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