PMID- 33763171 OWN - NLM STAT- MEDLINE DCOM- 20210519 LR - 20220421 IS - 1942-0994 (Electronic) IS - 1942-0900 (Print) IS - 1942-0994 (Linking) VI - 2021 DP - 2021 TI - HIF-1 Inhibitor YC-1 Reverses the Acquired Resistance of EGFR-Mutant HCC827 Cell Line with MET Amplification to Gefitinib. PG - 6633867 LID - 10.1155/2021/6633867 [doi] LID - 6633867 AB - BACKGROUND: Acquired resistance occurred in the majority of nonsmall cell lung cancer (NSCLC) patients receiving epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) therapy, and this may be related to the activation of the HIF-1 pathway. Therefore, we examined the influence of the hypoxia-inducible factor-1 (HIF-1) pathway inhibition on the sensitivity of HCC827 gefitinib-resistant (HCC827 GR) cells with MET amplification to gefitinib. METHODS: We established HCC827 GR cell line with MET amplification and set four groups with different treatment. An MTT assay, a colony formation analysis, and a wound healing assay were performed to determine the sensitivity change of HCC827 GR cells after different treatments. HIF-1alpha, p-EGFR, and p-Met levels were detected with western blot. Correlations among HIF-1alpha, p-EGFR, and p-Met levels of HCC827 GR cells with different treatments were analyzed with Pearson's correlation analysis. RESULTS: HIF-1 inhibitor YC-1 enhanced the sensitivity of HCC827 GR cells to gefitinib. p-Met level was correlated with HIF-1alpha level, while there was no correlation between p-Met level and p-EGFR level. CONCLUSION: HIF-1 inhibitor YC-1 is able to reverse the acquired resistance of HCC827 GR to gefitinib, and the regulation of the HIF-1 pathway on MET may be one of the mechanisms. CI - Copyright (c) 2021 Qian Jin et al. FAU - Jin, Qian AU - Jin Q AUID- ORCID: 0000-0002-9254-0359 AD - Department of Respiratory Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, China. FAU - Zheng, Jisheng AU - Zheng J AD - Department of Respiratory Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, China. FAU - Chen, Ming AU - Chen M AD - Department of Respiratory Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, China. FAU - Jiang, Na AU - Jiang N AD - Department of Respiratory Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, China. FAU - Xu, Xianrong AU - Xu X AD - Department of Respiratory Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, China. FAU - Huang, Feihua AU - Huang F AUID- ORCID: 0000-0002-5853-772X AD - Department of Respiratory Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, China. LA - eng PT - Journal Article DEP - 20210303 PL - United States TA - Oxid Med Cell Longev JT - Oxidative medicine and cellular longevity JID - 101479826 RN - 0 (Hypoxia-Inducible Factor 1) RN - 0 (Indazoles) RN - 154453-18-6 (3-(5'-hydroxymethyl-2'-furyl)-1-benzylindazole) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-met) RN - S65743JHBS (Gefitinib) SB - IM MH - Cell Line, Tumor MH - Cell Survival/drug effects MH - Down-Regulation/drug effects MH - Drug Resistance, Neoplasm/drug effects/*genetics MH - ErbB Receptors/genetics MH - Gefitinib/*pharmacology MH - *Gene Amplification MH - Humans MH - Hypoxia-Inducible Factor 1/*antagonists & inhibitors/metabolism MH - Indazoles/*pharmacology MH - Mutation/*genetics MH - Phosphorylation/drug effects MH - Proto-Oncogene Proteins c-met/*genetics MH - Tumor Stem Cell Assay MH - Wound Healing/drug effects PMC - PMC7946473 COIS- The authors declare that they have no competing interests. EDAT- 2021/03/26 06:00 MHDA- 2021/05/20 06:00 PMCR- 2021/03/03 CRDT- 2021/03/25 06:28 PHST- 2020/10/17 00:00 [received] PHST- 2021/01/30 00:00 [revised] PHST- 2021/02/14 00:00 [accepted] PHST- 2021/03/25 06:28 [entrez] PHST- 2021/03/26 06:00 [pubmed] PHST- 2021/05/20 06:00 [medline] PHST- 2021/03/03 00:00 [pmc-release] AID - 10.1155/2021/6633867 [doi] PST - epublish SO - Oxid Med Cell Longev. 2021 Mar 3;2021:6633867. doi: 10.1155/2021/6633867. eCollection 2021.