Objective To investigate the effects of exosomes derived from renal cancer cell line ACHN on the proliferation and apoptosis of ACHN cells and explore the mechanism.Methods Exosomes derived from ACHN cells were separated and purified by ultrafiltration and sucrose gradient centrifugation.The effects of the exosomes on the proliferation and apoptosis of ACHN cells were analyzed with CCK-8 assay and flow cytometry,respectively.The changes of mRNA and protein expressions of cyclin D1,caspase-3 were examined us...