ArticleHeliyon2024
AXL inhibition prevents RPA2/CHK1-mediated homologous recombination to increase PARP inhibitor sensitivity in hepatocellular carcinoma.
Article in Heliyon, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Immunotherapy for virus-related hepatocellular carcinoma: recent progress and future directions.Annals of medicine · 2026Review
- AXL at the nexus of therapeutic resistance, tumor vascularization, and immune evasion in cancer.iScience · 2026Review
- Targeted Therapies Modulating Mesenchymal-Epithelial Transition-Linked Oncogenic Signaling in the Tumor Microenvironment: Comparative Profiling of Capmatinib, Bemcentinib, and Galunisertib.Journal of clinical medicine · 2025Review
- Clinical approaches to overcome PARP inhibitor resistance.Molecular cancer · 2025Review
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Homologous recombination defects (HRD) render cells fail to repair DNA double-strand break (DSB), which causes synthetic lethality in these cells with punch by poly (ADP-ribose) polymerase (PARP) inhibitors (PARPi). Here, we reveal a receptor tyrosine kinase, AXL, whose inhibition leads to HRD in hepatocellular carcinoma (HCC) cells. AXL is upregulated in HCC tumors, which is positively correlated with low survival rates. AXL knockdown or AXL inhibition by bemcentinib reduces HR efficiency in HCC cells, and AXL plays its role in HR repair through its kinase activity. Furthermore, we find that AXL interacts with RPA2, enhancing the recruitment of RPA2 to DNA damage sites. Mechanistically, AXL promotes the tyrosinization of RPA2 at tyrosine 9, promoting the phosphorylation of CHK1, thereby strengthens the HR repair ability in HCC cells to resist DNA damage. In conclusion, our results reveal that AXL is a promising therapeutic biomarker for HCC patients, and present that targeting AXL-RPA2-CHK1 pathway together with PARP inhibitor will be effective therapeutic strategy in HCC.
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Registered trials
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