Chinese Journal of Pharmacovigilance ›› 2023, Vol. 20 ›› Issue (11): 1201-1208.
DOI: 10.19803/j.1672-8629.20230430

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Drug resistance mechanism of pemetrexed in non-small cell lung cancer

LIN Qiqi1, LI Xinyang2#, MENG Fanhao1,*   

  1. 1School of Pharmacy/Key Laboratory of Research and Development of Small Molecule Targeted Antitumor Drugs, China Medical University, Shenyang Liaoning 110122, China;
    2Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyang Liaoning 110004, China
  • Received:2023-07-12 Online:2023-11-15 Published:2023-11-13

Abstract: Objective To investigate the resistance mechanism of pemetrexed in non-small cell lung cancer (NSCLC). Methods The possible mechanism of pemetrexed resistance in non-small cell lung cancer was described in terms of oncogenes, DNA synthesis and repair, and biological behavior. Results Gene mutations and related molecular changes (including EGFR, ALK, ROS1, KRAS, and NRAS, TTF-1, HDAC), changes in pemetrexed target enzymes (TS, DHFR, and GARFT and RRM1, and MTHFR), high status of DNA repair systems (including BER, NER, and CHK1, MSH2, and Ku proteins), changes in tumor migration and metastatic processes (activation of EMT, cancer cell stem cells and biomarkers) could possibly be factors contributing to the reduced sensitivity of NSCLC cells to pemetrexed. Conclusion The mechanisms of pemetrexed resistance are diverse, and treatment regimens can be selected according to the specific genotypes of NSCLC patients to improve the progression-free survival and survival rate.

Key words: non-small cell lung cancer, TS inhibitor, pemetrexed, drug resistance

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