RP11-874 J12.4 promotes erlotinib resistance in non-small cell lung cancer via increasing AXL expression

Life Sci. 2024 Aug 15:351:122849. doi: 10.1016/j.lfs.2024.122849. Epub 2024 Jun 17.

Abstract

EGFR tyrosine kinase inhibitor (TKI) resistance is a major challenge for EGFR-mutant non-small cell lung cancer (NSCLC) treatment. Our previous work revealed that overexpression of AXL promoted EGFR-TKI resistance through epithelial-mesenchymal transition (EMT) in a subset of NSCLC patients. Compared with erlotinib resistant and sensitive cells, RP11-874 J12.4 was upregulated in erlotinib-resistant NSCLC cells (HCC827-ER3). Interestingly, the expression of RP11-874 J12.4 positively correlated with AXL. Besides, RP11-874 J12.4 promotes NSCLC cell proliferation and metastasis in vitro. Mechanistically, RP11-874 J12.4 promoted AXL expression through sponge with miR-34a-5p, which was reported to inhibit the translation of AXL mRNA. Meanwhile, the expression of RP11-874 J12.4 in lung cancer tumors were higher than the adjacent tissue, and those patients with high expression of RP11-874 J12.4 showed a poor prognosis in clinical. High expression of RP11-874 J12.4 might be a biomarker for NSCLC patients with erlotinib resistance. These findings reveal a novel insight into the mechanism of erlotinib resistance in NSCLC, and it might be a promising target for the diagnosis and treatment of NSCLC.

Keywords: AXL; Erlotinib-resistance; Non-small cell lung cancer; RP11-874 J12.4.

MeSH terms

  • Animals
  • Axl Receptor Tyrosine Kinase*
  • Carcinoma, Non-Small-Cell Lung* / drug therapy
  • Carcinoma, Non-Small-Cell Lung* / genetics
  • Carcinoma, Non-Small-Cell Lung* / metabolism
  • Carcinoma, Non-Small-Cell Lung* / pathology
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Drug Resistance, Neoplasm* / genetics
  • Epithelial-Mesenchymal Transition / drug effects
  • Epithelial-Mesenchymal Transition / genetics
  • Erlotinib Hydrochloride* / pharmacology
  • Erlotinib Hydrochloride* / therapeutic use
  • Gene Expression Regulation, Neoplastic / drug effects
  • Humans
  • Lung Neoplasms* / drug therapy
  • Lung Neoplasms* / genetics
  • Lung Neoplasms* / metabolism
  • Lung Neoplasms* / pathology
  • Mice
  • MicroRNAs / genetics
  • MicroRNAs / metabolism
  • Protein Kinase Inhibitors / pharmacology
  • Protein Kinase Inhibitors / therapeutic use
  • Proto-Oncogene Proteins* / genetics
  • Proto-Oncogene Proteins* / metabolism
  • Receptor Protein-Tyrosine Kinases* / genetics
  • Receptor Protein-Tyrosine Kinases* / metabolism

Substances

  • Erlotinib Hydrochloride
  • Axl Receptor Tyrosine Kinase
  • Proto-Oncogene Proteins
  • Receptor Protein-Tyrosine Kinases
  • AXL protein, human
  • Protein Kinase Inhibitors
  • MicroRNAs
  • MIRN34 microRNA, human