To study the effect and mechanism of miR-375 enriched in BMSC exosomes on prostate cancer (PC) cells. Bioinformatics assessed the potential regulatory miRNA of TFF3 and miR-375 level in breast cancer cells and breast cancer clinical samples was detected by PCR. Dual luciferase assay
validated the relationship between TFF3 and miR-375. miR-375 mimics or sh-TFF3 was transfected into PC cells, followed by measuring miR-375 and TFF3 by PCR and Western-blot. Cell proliferation, invasion, migration and apoptosis by Edu staining, transwell and flow cytometry. The BMSC exosomes
were then isolated and co-cultured with PC cells to detect cell proliferation and invasion. PC cells and tissues showed the expression of miR-375 was decreased, indicated that miR-375 specifically inhibited TFF3 level. miR-375 was enriched in MSC-derived exosomes and could be transferred to
PC cells. miR-375 mimics, exosome miR-375 or silenced TFF3 inhibited TFF3 level, up-regulated PCNA, MMP-2/9 expression, thereby inhibiting cell proliferation and metastasis, and promoting cell apoptosis. miR-375 is enriched in BMSC exosomes and inhibits PC cell migration and invasion by reducing
TFF3.
CXCL1/GROα increases cell migration and invasion of prostate cancer by decreasing fibulin-1 expression through NF-κB/HDAC1 epigenetic regulation
