CHMP4C promote the malignant progression of bladder cancer by regulating the PI3K/AKT pathway

Background: This study investigates the expression of CHMP4C in bladder cancer, its role in tumour progression, and its potential as a therapeutic target. Methods: Bioinformatics analysed the expression of CHMP4C in bladder cancer and normal bladder tissue, exploring its correlation with patient survival prognosis. We used immunohistochemistry to detect the expression level of CHMP4C in bladder cancer tissues and their paired paracancerous tissues. We used LV-shCHMP4C to knock down the expression of CHMP4C in the bladder cancer cell lines T24 and 5637. The proliferation, apoptosis, migration, and invasion abilities of tumour cells were detected by the CCK8 assay, the plate colony formation assay, flow cytometry, the scratch test, and the Transwell invasion test. The KEGG analysis identified the signalling pathways influenced by CHMP4C, and Western Blot was used to check the levels of proteins linked to the PI3K signalling pathway to see how PI3K affects bladder cancer cells. Results: CHMP4C levels are much higher in bladder cancer tissues compared to adjacent normal tissue, according to TCGA data, immunohistochemistry, quantitative real-time PCR, and Western blot analysis. High CHMP4C expression is associated with the increased grade and malignancy of tumours. Knocking down CHMP4C can inhibit cell proliferation, migration, and invasion while promoting apoptosis and causing G1 phase arrest. Additionally, studies have shown that CHMP4C regulates the PI3K/AKT signalling pathway, as knocking down CHMP4C reduces the phosphorylation levels of PI3K and AKT. Using PI3K agonists can reverse the effects of CHMP4C knockdowns on the biological behaviour of 5637 cells. Conclusion: The high expression of CHMP4C may be associated with poor prognosis, tumor grading, and sensitivity to immunotherapy in bladder cancer. By promoting cell proliferation, migration, and invasion, while inhibiting apoptosis and advancing the cell cycle, CHMP4C facilitates the progression of bladder cancer. CHMP4C influences the development of bladder cancer by activating the PI3K/Akt pathway.