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  • Title: Clinical significance of CXCL16/CXCR6 expression in patients with prostate cancer.
    Author: Ha HK, Lee W, Park HJ, Lee SD, Lee JZ, Chung MK.
    Journal: Mol Med Rep; 2011; 4(3):419-24. PubMed ID: 21468586.
    Abstract:
    We hypothesized that the CXCL16-CXCR6 ligand-receptor system may play an important role in prostate cancer progression. Levels of CXCL16 and CXCR6 expression were evaluated in prostate cancer cell lines (PC-3 and LNCaP) and normal prostate epithelial cells (PrEC), as well as in tissues from 354 patients. The immunohistochemical expression of CXCL16/CXCR6 was greater in the PC-3/LNCaP cells than in the PrEC cell line. The expression of CXCL16/CXCR6 was significantly higher in prostate cancer than in benign prostatic hypertrophy. Using RT-PCR, the expression of CXCL16/CXCR6 was found to be greater in the PC-3/LNCaP cells than in the PrEC cell line. CXCL16/CXCR6 was weakly detected in lung and liver tissues, whereas CXCL16 was highly expressed in specimens of bone metastasis. CXCL16 immunostaining was related to Gleason score, T stage, tumor volume, perineural invasion and lymph node metastasis. However, biochemical PSA recurrence was not related to the expression of CXCL16/CXCR6. High CXCL16/CXCR6 expression may be related to aggressive cancer behavior, and high CXCL16 expression to bone metastases.
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