Hsa_circ_0058495-mediated IGF2BP2 ubiquitination and m6A modification of MEKK1 promote the progression of PDAC
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View abstract on PubMed
Summary
This summary is machine-generated.Hsa_circ_0058495 promotes pancreatic ductal adenocarcinoma (PDAC) by stabilizing IGF2BP2 and activating the MEKK1-ERK pathway. Exosomal hsa_circ_0058495 also drives M2 macrophage polarization, suppressing the immune response and advancing PDAC progression.
Area Of Science
- Oncology
- Molecular Biology
- Exosome Biology
Background
- Pancreatic ductal adenocarcinoma (PDAC) is an aggressive cancer with poor outcomes.
- Hsa_circ_0058495 is upregulated in PDAC and its exosomes, promoting proliferation and invasion.
- The precise oncogenic mechanisms of hsa_circ_0058495 require further elucidation.
Purpose Of The Study
- To investigate the molecular mechanisms underlying the oncogenic role of hsa_circ_0058495 in PDAC.
- To explore the function of exosomal hsa_circ_0058495 in the tumor microenvironment.
- To assess the potential of hsa_circ_0058495 as a diagnostic biomarker and therapeutic target.
Main Methods
- RNA sequencing to profile circRNA expression.
- Western blotting, RT-qPCR, co-immunoprecipitation, RNA pull-down, and RNA immunoprecipitation assays to study molecular interactions.
- Confocal microscopy and PET/CT imaging for in vitro and in vivo assessments.
Main Results
- Hsa_circ_0058495 stabilizes IGF2BP2 by inhibiting TRIM25-mediated ubiquitination and autophagy.
- Stabilized IGF2BP2 enhances MEKK1 mRNA stability, promoting ERK1/2 phosphorylation and PDAC cell proliferation/invasion.
- Exosomal hsa_circ_0058495 induces M2 macrophage polarization, creating an immunosuppressive tumor microenvironment.
Conclusions
- Hsa_circ_0058495 drives PDAC progression via IGF2BP2 stabilization and MEKK1-ERK pathway activation.
- Exosomal hsa_circ_0058495 contributes to tumor immunosuppression by promoting M2 macrophage polarization.
- Hsa_circ_0058495 is a key regulator of PDAC and a potential diagnostic and therapeutic target.
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