RETRACTED ARTICLE: CC-chemokine receptor 7 is overexpressed and correlates with growth and metastasis in prostate cancer
Multiple studies have shown that CC-chemokine receptor 7 (CCR7) promotes cell proliferation in several human cancers. We investigated the expression and clinical significance of CCR7 in our large collection of prostate cancer (PCa) samples and explored its function on the proliferation and migration of PCa cells. In this study, the expression of CCR7 was examined by immunohistochemical staining and quantitative RT-PCR in primary PCa tissues from 60 patients who underwent radical prostatectomy. Then, we investigated the functional role of CCR7 in PCa cell proliferation and migration by small interfering RNA-mediated depletion. The positive rate of CCR7 staining was 88.33 % (53/60) in the PCa group and 16.67 % (10/60) in cases of benign prostate hyperplasia (BPH); the difference of CCR7 expression between PCa and BPH was statistically significant. The results were confirmed by quantitative real-time PCR. CCR7 was significantly elevated in all five PCa cell lines when compared to the RWPE-1 cells. Silencing of CCR7 inhibited the proliferation of PC3 cells which have a relatively high level of CCR7 in a time-dependent manner, and the invasion and migration of PC3 cells were distinctly suppressed. Our data suggest that the pathogenesis of human PCa maybe mediated by the CCR7, and thus CCR7 could represent selective targets for the molecularly targeted treatments of PCa.
KeywordsProstate cancer Chemokine receptors CCR7 Proliferation Migration Metastasis
Conflicts of interest
- 13.van den Bosch T, Koopmans AE, Vaarwater J, van den Berg M, de Klein A, Verdijk RM. Chemokine receptor CCR7 expression predicts poor outcome in uveal melanoma and relates to liver metastasis whereas expression of CXCR4 is not of clinical relevance. Invest Ophthalmol Vis Sci. 2013;54(12):7354–61.CrossRefPubMedGoogle Scholar
- 19.Liu FY, Safdar J, Li ZN, Fang QG, Zhang X, Xu ZF, Sun CF. CCR7 regulates cell migration and invasion through MAPKs in metastatic squamous cell carcinoma of head and neck. Int J Oncol. 2014 Sep 25.Google Scholar