[Expression and clinical significance of Toll-like receptors in human renal carcinoma cell 786-0 and normal renal cell HK-2].

OBJECTIVE: To investigate the expression of toll-like receptors (TLR1-TLR10) in human renal carcinoma cell 786-0 and normal renal cell HK-2 and discuss the significance of TLRs in the development of renal carcinoma.

METHODS: Human renal carcinoma cell 786-0 (experimental group) and normal renal cell HK-2 (control group) were cultured. The expression of TLR1-TLR10 was detected by real-time fluorogenic quantitative PCR (FQ-PCR).

RESULTS: The FQ-PCR analysis demonstrated that 786-0 cell line and HK-2 cell line expressed TLR1-TLR6 and TLR8-TLR10 mRNA. Yet neither had an expression of TLR7. Moreover, the expression levels of TLR1, TLR2, TLR4, TLR5, TLR6, TLR8 and TLR10 in the experimental group were significantly higher than those in HK-2 cell line [(4.40 ± 0.19) × 10(-2), (1.77 ± 0.24) × 10(-2), (5.03 ± 0.62) × 10(-2), (3.93 ± 0.86) × 10(-2), (6.11 ± 0.48) × 10(-2), (1.89 ± 0.47) × 10(-2), (2.84 ± 0.57) × 10(-2) vs (0.84 ± 0.27) × 10(-2), (0.40 ± 0.04) × 10(-2), (0.95 ± 0.73) × 10(-2), (0.56 ± 0.25) × 10(-2), (0.49 ± 0.16) × 10(-2), (0.20 ± 0.07) × 10(-2), (0.27 ± 0.08) × 10(-2), P < 0.01]. There was no significant change in the expressions of TLR3 and TLR9 between 786-0 and HK-2 cell line (P > 0.05).

CONCLUSION: The expressions of TLR1, TLR2, TLR4, TLR5, TLR6, TLR8 and TLR10 are significantly higher in 786-0 cell line than those in HK-2 cell line. They may play key roles in the development of renal carcinoma.