AXL signaling in cancer: from molecular insights to targeted therapies

Signal Transduct Target Ther. 2025 Feb 10;10(1):37. doi: 10.1038/s41392-024-02121-7.

Abstract

AXL, a member of the TAM receptor family, has emerged as a potential target for advanced-stage human malignancies. It is frequently overexpressed in different cancers and plays a significant role in various tumor-promoting pathways, including cancer cell proliferation, invasion, metastasis, epithelial-mesenchymal transition (EMT), angiogenesis, stemness, DNA damage response, acquired therapeutic resistance, immunosuppression, and inflammatory responses. Beyond oncology, AXL also facilitates viral infections, including SARS-CoV-2 and Zika highlighting its importance in both cancer and virology. In preclinical models, small-molecule kinase inhibitors targeting AXL have shown promising anti-tumorigenic potential. This review primarily focuses on the induction, regulation and biological functions of AXL in mediating these tumor-promoting pathways. We discuss a range of therapeutic strategies, including recently developed small-molecule tyrosine kinase inhibitors (TKIs), monoclonal antibodies, and antibody-drug conjugates (ADCs), anti-AXL-CAR, and combination therapies. These interventions are being examined in both preclinical and clinical studies, offering the potential for improved drug sensitivity and therapeutic efficacy. We further discuss the mechanisms of acquired therapeutic resistance, particularly the crosstalk between AXL and other critical receptor tyrosine kinases (RTKs) such as c-MET, EGFR, HER2/HER3, VEGFR, PDGFR, and FLT3. Finally, we highlight key research areas that require further exploration to enhance AXL-mediated therapeutic approaches for improved clinical outcomes.

Publication types

  • Review

MeSH terms

  • Animals
  • Axl Receptor Tyrosine Kinase
  • COVID-19 / genetics
  • COVID-19 / virology
  • Epithelial-Mesenchymal Transition / drug effects
  • Epithelial-Mesenchymal Transition / genetics
  • Humans
  • Molecular Targeted Therapy
  • Neoplasms* / drug therapy
  • Neoplasms* / genetics
  • Neoplasms* / pathology
  • Protein Kinase Inhibitors* / therapeutic use
  • Proto-Oncogene Proteins* / antagonists & inhibitors
  • Proto-Oncogene Proteins* / genetics
  • Proto-Oncogene Proteins* / metabolism
  • Receptor Protein-Tyrosine Kinases* / antagonists & inhibitors
  • Receptor Protein-Tyrosine Kinases* / genetics
  • Receptor Protein-Tyrosine Kinases* / metabolism
  • SARS-CoV-2 / genetics
  • SARS-CoV-2 / pathogenicity
  • Signal Transduction* / drug effects

Substances

  • Receptor Protein-Tyrosine Kinases
  • Proto-Oncogene Proteins
  • Axl Receptor Tyrosine Kinase
  • AXL protein, human
  • Protein Kinase Inhibitors