ArticleExperimental biology and medicine (Maywood, N.J.)2024
Exosomal circPTPRK promotes angiogenesis after radiofrequency ablation in hepatocellular carcinoma.
Article in Experimental biology and medicine (Maywood, N.J.), 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.
- Sublethal heat stress synergizes with the tumor microenvironment to drive recurrence of hepatocellular carcinoma after thermal ablation: mechanisms, molecular predictors, and targeted interventions.Cell biology and toxicology · 2026Review
- Exosomal circRNAs in hepatocellular carcinoma: Implications for the development and therapeutic resistance of hepatocellular carcinoma (Review).International journal of oncology · 2026Review
- AntagomiR-192-5p-engineered exosomes encapsulated in MXene-modified GelMA hydrogel facilitated epithelization of burn wounds by targeting OLFM4.Bioactive materials · 2025Article
- Post-ablation recurrence in hepatocellular carcinoma: molecular pathogenesis and targeted therapeutic innovations.American journal of cancer research · 2025Review
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Authors and funding
3 authors.
Funding
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Abstract
Radiofrequency ablation (RFA) is an effective treatment for hepatocellular carcinoma (HCC), but the recurrence rate remains high due to angiogenesis in residual cancer cells. We used thermal stimulation to simulate the post-RFA microenvironment. The expression profile of circRNAs between normal control HCC cell-derived exosomes and exosomes after heat stimulation were analyzed by RNA sequencing. Quantitative real-time PCR was applied to evaluate the expression of circPTPRK in exosomes and human umbilical vein endothelial cells (HUVECs). Then, the functions of heat-stimulated HCC cell-derived exosomes and exosomal circPTPRK on HUVECs were unveiled. Transcriptome sequencing was utilized to determine targeted genes of circPTPRK. Heat-stimulated HCC cell-derived exosomes augmented cell proliferation, migration, and angiogenesis of HUVECs. In total, 229 differentially expressed circRNAs were obtained, including 211 upregulated circRNAs and 18 downregulated circRNAs in heat-stimulated HCC cell-derived exosomes. The expression of circPTPRK was remarkably increased in heat-stimulated HCC cell-derived exosomes and the HUVECs incubated with them. Heat-stimulated HCC cell-derived exosomes with circPTPRK knockdown significantly inhibited cell proliferation, migration, and angiogenesis of HUVECs. Mechanistic studies indicated that PLA2G4E is a downstream target of circPTPRK, and PLA2G4E overexpression reversed the inhibitory effect of circPTPRK knockdown on HUVEC angiogenesis. Our results indicated that exosomal circPTPRK activated HUVEC angiogenesis by upregulating PLA2G4E expression.
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