ArticleCancer immunology research2023
Extracellular Vesicle-Packaged circATP2B4 Mediates M2 Macrophage Polarization via miR-532-3p/SREBF1 Axis to Promote Epithelial Ovarian Cancer Metastasis.
Article in Cancer immunology research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.
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Who cites it
46 citing papers in PubMed, 73 citations in OpenAlex.
- Exosomal circular RNAs in the tumor immune microenvironment: From regulatory mechanisms to therapeutic opportunities and translational hurdles (Review).International journal of molecular medicine · 2026Review
- GW4869 Depletes Macrophages and Increases Number of Extracellular Vesicles in Murine Peritoneal Cavity Fluid.Journal of extracellular biology · 2026Article
- Sterol regulatory element‑binding proteins: Master regulators of lipid metabolic reprogramming in cancer and emerging therapeutic targets (Review).Oncology reports · 2026Review
- Spatial and single-cell characterization of human glioblastoma tumor microenvironment reveals malignant cellular communities.Nature neuroscience · 2026Article
- TAMs in the Gynecological Tumor Microenvironment: Insights from Cross-Cancer Studies for Immunotherapy.Cancers · 2026Review
- MicroRNA Expression Profile in Endometriosis and Endometriosis-Associated Ovarian Cancer-Systematic Review.Cells · 2026Review
- CAF-derived exosomal circMPP6 drives ovarian cancer metastasis by coordinating nuclear and cytoplasmic regulation of ADAM22 to activate TGF-β/Smad signaling.International journal of biological sciences · 2026Article
- hsa_circ_0001818 regulates the function of macrophages in sepsis by inhibiting miR-17-3p, miR-433-3p, and miR-642a-5p.Scientific reports · 2025Article
- Extracellular vesicles: biogenesis mechanism and impacts on tumor immune microenvironment.Journal of biomedical science · 2025Review
- Long Non-Coding, Micro, and Circular RNAs in Ovarian Cancer Metastasis: Pathways and Treatment Approaches.Reproductive sciences (Thousand Oaks, Calif.) · 2025Review
- Tumor microenvironment in osteosarcoma: From cellular mechanism to clinical therapy.Genes & diseases · 2025Review
- Extracellular vesicles from ovarian cancer cells induce senescent lipid-laden macrophages to facilitate omental metastasis.Journal of nanobiotechnology · 2025Article
- Exploring a circulating circRNA and miRNA biomarker panel for early detection of ovarian cancer through multiple omics analysis.Scientific reports · 2025Article
- Extracellular-Vesicle-Associated UBE2NL and HIST2H3PS2 Promote Tumor Aggressiveness and Metastasis in Gynecologic Cancer.International journal of molecular sciences · 2025Article
- Tumor-associated macrophages remodel the suppressive tumor immune microenvironment and targeted therapy for immunotherapy.Journal of experimental & clinical cancer research : CR · 2025Review
- Effect of Extracellular Vesicles Derived From Tumor Cells on Immune Evasion.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Review
- Tumour-derived exosomal miR-205 promotes ovarian cancer cell progression through M2 macrophage polarization via the PI3K/Akt/mTOR pathway.Journal of ovarian research · 2025Article
- Plectin, a novel regulator in migration, invasion and adhesion of ovarian cancer.Cell & bioscience · 2025Article
- Role of the AKT signaling pathway in regulating tumor-associated macrophage polarization and in the tumor microenvironment: A review.Medicine · 2025Review
- Advances in small extracellular vesicles: roles in the tumor microenvironment and epithelial ovarian cancer diagnosis and treatment.Frontiers in oncology · 2025Review
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ovarian cancer is one of the most common gynecologic malignancies with a highly immunosuppressive tumor microenvironment (TME) and poor prognosis. Circular RNA (circRNA) is a type of noncoding RNA with high stability, which has been shown to play an important role in biological processes and TME reprogramming in a variety of tumors. The biological function of a novel circRNA, circATP2B4, in epithelial ovarian cancer (EOC) was detected and evaluated. Transmission electron microscopy, differential ultracentrifugation and qRT-PCR were used to verify the existence of extracellular vesicles (EV)-packaged circATP2B4. Macrophage uptake of circATP2B4 was determined by EVs tracing. Dual luciferase reporter, FISH, Western blotting, and flow cytometry assays were used to investigate the interactions between circATP2B4 and miR-532-3p as well as sterol regulatory element-binding factor 1 (SREBF1) expression in macrophages. CircATP2B4 was upregulated in EOC tissues and positively correlated with ovarian cancer progression. Functionally, circATP2B4 promoted carcinogenic progression and metastasis of EOC both in vitro and in vivo. Mechanistically, EV-packaged circATP2B4 in EOC could be transmitted to infiltrated macrophages and acted as competing endogenous RNA of miR-532-3p to relieve the repressive effect of miR-532-3p on its target SREBF1. Furthermore, circATP2B4 induced macrophage M2 polarization by regulating the miR-532-3p/SREBF1/PI3Kα/AKT axis, thereby leading to immunosuppression and ovarian cancer metastasis. Collectively, these data indicate that circATP2B4-containing EVs generated by EOC cells promoted M2 macrophages polarization and malignant behaviors of EOC cells. Thus, targeting EVs-packaged circATP2B4 may provide a potential diagnosis and treatment strategy for ovarian cancer.
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