Toll样受体9在胰腺癌组织中的表达及临床意义

目的 检测Toll样受体9(TLR9)在胰腺癌组织中的表达,探讨其临床意义.方法 采用实时定量PCR法、蛋白质印迹法及免疫组化法检测30例胰腺癌及其相应癌旁组织、10例正常胰腺组织中TLR9的表达,分析胰腺癌组织TLR9表达与临床病理参数的关系.结果 以正常胰腺组织作为对照,胰腺癌组织TLR9 mRNA表达倍数为2.32(1.41～3.22),癌旁组织为1.23(1.18～1.28),两组间比较差异有统计学意义(P＜0.05).胰腺癌组织TLR9蛋白阳性表达率为73.3%(22/30),癌旁组织为33.3%(10/30),正常胰腺组织为20.0%(2/10),三者的TLR9相对表达量分别为0.780±0.026、0.400±0.018、0.173±0.043,三组间比较差异有统计学意义(P值均＜0.01).胰腺癌组织TLR9高表达与肿瘤分化程度、TNM分期、淋巴结转移呈正相关.结论 胰腺癌组织高表达TLR9,它可能参与胰腺癌的恶性转化过程.

TLR9 expression in pancreatic cancer and its clinic significance

Objective To detect the expression of Toll-like receptor 9 (TLR9) in pancreatic cancer,and to explore its clinical significance. Methods The real-time PCR, Western blotting and immunohistochemistry were used to examine the expression of TLR9 in 30 samples of pancreatic cancer and the adjacent tissues, and 10 samples of normal pancreatic tissues. The relationships of TLR9 with clinicopathological parameters were analyzed. Results Compared with normal pancreatic tissues, the amplification value of TLR9 mRNA expression was 2.32 fold (1.41 ～ 3.22 ) in human pancreatic cancer, was 1.23 fold (1.18 ～ 1.28) in paracancerous tissues, respectively, and the difference was statistically significant (P ＜ 0.05 ). The percentage of positive cells expressing TLR9 protein in human pancreatic cancer tissues,paracancerous tissues and normal tissues were 73.3% (22/30), 33.3% (10/30) and 20.0% (2/10), and the relative expressions of TLR9 protein were 0.780 ±0. 026,0. 400 ±0.018,0. 173 ±0.043 ,respectively, and the difference was statistically significant( P ＜ 0.05 ). The highly expressed TLR9 was positively correlated with the degree of tumor differentiation, TNM stage and lymph node metastasis. Conclusions TLR9 was highly expressed in pancreatic cancer tissues. TLR9 expression plays a role in the canceration of pancreatic tissues.