VEGFA and prostate cancer: Exosomes were released by diverse cells and could be transported between cells by carrying proteins, miRs, lncRNAs, and mRNAs.8,46 In addition, exosomes can be derived from hBMSCs and involved in the enhancement of VEGF expression during tumor development.47 The exosomal miRs have been highlighted as biomarkers for prostate cancer.48 Importantly, the increased enrichment of miR-187-3p is found in MSC-exos,11 which was consistent with our results that miR-187 expression was high in the purified hBMSCs-exos.