PMID- 34425505 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210920 IS - 1936-5233 (Print) IS - 1936-5233 (Electronic) IS - 1936-5233 (Linking) VI - 14 IP - 11 DP - 2021 Nov TI - Effect of aerobic exercise on acquired gefitinib resistance in lung adenocarcinoma. PG - 101204 LID - S1936-5233(21)00196-0 [pii] LID - 10.1016/j.tranon.2021.101204 [doi] LID - 101204 AB - Lung adenocarcinoma patients with epidermal growth factor receptor (EGFR)-activating mutations respond well to tyrosine kinase inhibitors but typically develop resistance. Current therapies mainly target differentiated cells, not cancer stem cells (CSCs), but CSCs affect the occurrence, invasion, metastasis and treatment sensitivity of malignant tumours. Recently, aerobic exercise has emerged as adjuvant therapy for cancer. Aerobic exercise can accelerate blood circulation, improve tissue oxygen supply, reduce the stress level of patients, improve the antioxidant capacity of the body, and facilitate the degradation of hypoxia-inducible factor-1 (HIF-1) in tumour tissues, thus weakening its maintenance effect on CSCs. In this study, we successfully established lung adenocarcinoma cell lines with gefitinib resistance. Long-term gefitinib induction could increase the level of oxidative stress in lung adenocarcinoma cells and reduce the antioxidant capacity, resulting in the high expression of HIF-1 and ALDH1 and leading to the enrichment of CSCs, and a decreased response to gefitinib. This may be one of the important reasons for gefitinib-acquired resistance in lung adenocarcinoma. In the case of drug resistance, effective aerobic exercise could reduce ROS, activate SOD, inhibit HIF-1 and ALDH1, and cause a reduction in CSCs to sensitise cells to gefitinib again and ultimately inhibit the malignant proliferation of tumours. Therefore, in the treatment of lung adenocarcinoma, the inhibitory effect of aerobic exercise on oxidative stress can enhance the response of drug-resistant cells to gefitinib and can be used as an effective adjunct measure in the treatment of lung adenocarcinoma. CI - Copyright (c) 2021. Published by Elsevier Inc. FAU - Yang, Hong AU - Yang H AD - School of PE, Henan University of Science and Technology, Luoyang 471023, China. Electronic address: kdtyyh@163.com. FAU - Liu, Yiwen AU - Liu Y AD - Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment, Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital (College of Clinical Medicine) of Henan University of Science and Technology, Luoyang 471003, China. FAU - Kong, Jinyu AU - Kong J AD - Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment, Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital (College of Clinical Medicine) of Henan University of Science and Technology, Luoyang 471003, China. LA - eng PT - Journal Article DEP - 20210821 PL - United States TA - Transl Oncol JT - Translational oncology JID - 101472619 PMC - PMC8383010 OTO - NOTNLM OT - Acquired drug resistance OT - Aerobic exercise OT - CSCs OT - Gefitinib OT - Lung adenocarcinoma COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/08/24 06:00 MHDA- 2021/08/24 06:01 PMCR- 2021/08/21 CRDT- 2021/08/23 20:28 PHST- 2021/05/12 00:00 [received] PHST- 2021/08/03 00:00 [revised] PHST- 2021/08/14 00:00 [accepted] PHST- 2021/08/24 06:00 [pubmed] PHST- 2021/08/24 06:01 [medline] PHST- 2021/08/23 20:28 [entrez] PHST- 2021/08/21 00:00 [pmc-release] AID - S1936-5233(21)00196-0 [pii] AID - 101204 [pii] AID - 10.1016/j.tranon.2021.101204 [doi] PST - ppublish SO - Transl Oncol. 2021 Nov;14(11):101204. doi: 10.1016/j.tranon.2021.101204. Epub 2021 Aug 21.