PMID- 30324095 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220321 IS - 2253-2447 (Print) IS - 2253-2447 (Electronic) IS - 2253-2447 (Linking) VI - 10 DP - 2018 TI - Caveolin-1 and -2 regulate cell motility in castration-resistant prostate cancer. PG - 135-144 LID - 10.2147/RRU.S173377 [doi] AB - BACKGROUND: Caveolin (Cav)-1 and Cav-2 are cell membrane proteins, which are structural proteins of caveolae and are reported to be positive regulators of cell survival and metastasis in prostate cancer (PC). In a previous study, we reported that elevated levels of Cav-1 and Cav-2 were significantly associated with PC progression. However, their functions in PC have not yet been clarified. In this study, we examined the function of Cav-1 and Cav-2 in PC cell invasiveness and motility. MATERIALS AND METHODS: We introduced Cav-1- and Cav-2-specific small interfering into PC3 cells to knock-down (KD) both molecules. We also performed cell proliferation assay, wound healing assay, migration assay, and invasion assay using PC3 cells and compared the results between Cav-1-KD, Cav-2-KD, and negative control PC3 cells. In addition, we performed real-time quantitative PCR (RT-qPCR) and RT2 Profiler PCR Array analysis to identify factors influencing migration. RESULTS: We observed no significant difference in the proliferative and invasive activities of Cav-1-KD and Cav-2-KD PC3 cells; however, the cell motility was significantly decreased compared with negative control PC3 cells. RT-qPCR revealed that the expression of vimentin and N-cadherin was downregulated in Cav-1-KD PC3 cells. In addition, PCR array revealed a decreased expression of MGAT5, MMP13, and MYCL in Cav-1-KD PC3 and ETV4, FGFR4, and SRC in Cav-2-KD PC3. CONCLUSION: Cav-1 and Cav-2 may positively contribute to the upregulation of castration-resistant PC cell migration. Cav-induced regulation of several molecules including vimentin, N-cadherin, MGAT5, MMP13, MYCL, ETV4, FGFR4, and SRC may have an important role in PC3 cell motility. However, further examination will be required. FAU - Kamibeppu, Toyoharu AU - Kamibeppu T AD - Department of Urology, Faculty of Medicine, University of Miyazaki, Kiyotake, Japan, syoichiro_mukai@med.miyazaki-u.ac.jp. FAU - Yamasaki, Koji AU - Yamasaki K AD - Department of Urology, Faculty of Medicine, University of Miyazaki, Kiyotake, Japan, syoichiro_mukai@med.miyazaki-u.ac.jp. FAU - Nakahara, Kozue AU - Nakahara K AD - Department of Urology, Faculty of Medicine, University of Miyazaki, Kiyotake, Japan, syoichiro_mukai@med.miyazaki-u.ac.jp. FAU - Nagai, Takahiro AU - Nagai T AD - Department of Urology, Faculty of Medicine, University of Miyazaki, Kiyotake, Japan, syoichiro_mukai@med.miyazaki-u.ac.jp. FAU - Terada, Naoki AU - Terada N AD - Department of Urology, Faculty of Medicine, University of Miyazaki, Kiyotake, Japan, syoichiro_mukai@med.miyazaki-u.ac.jp. FAU - Tsukino, Hiromasa AU - Tsukino H AD - Department of Urology, Faculty of Medicine, University of Miyazaki, Kiyotake, Japan, syoichiro_mukai@med.miyazaki-u.ac.jp. FAU - Mukai, Shoichiro AU - Mukai S AD - Department of Urology, Faculty of Medicine, University of Miyazaki, Kiyotake, Japan, syoichiro_mukai@med.miyazaki-u.ac.jp. FAU - Kamoto, Toshiyuki AU - Kamoto T AD - Department of Urology, Faculty of Medicine, University of Miyazaki, Kiyotake, Japan, syoichiro_mukai@med.miyazaki-u.ac.jp. LA - eng PT - Journal Article DEP - 20181003 PL - England TA - Res Rep Urol JT - Research and reports in urology JID - 101576971 PMC - PMC6174915 OTO - NOTNLM OT - CRPC OT - caveolin-1 OT - caveolin-2 OT - cell motility COIS- Disclosure The authors report no conflicts of interest in this work. EDAT- 2018/10/17 06:00 MHDA- 2018/10/17 06:01 PMCR- 2018/10/03 CRDT- 2018/10/17 06:00 PHST- 2018/10/17 06:00 [entrez] PHST- 2018/10/17 06:00 [pubmed] PHST- 2018/10/17 06:01 [medline] PHST- 2018/10/03 00:00 [pmc-release] AID - rru-10-135 [pii] AID - 10.2147/RRU.S173377 [doi] PST - epublish SO - Res Rep Urol. 2018 Oct 3;10:135-144. doi: 10.2147/RRU.S173377. eCollection 2018.