FMNL2在结直肠癌组织中的表达及其临床意义

目的 检测FMNL2在结直肠癌组织与癌旁正常组织中的表达情况,初步探讨其与结直肠癌侵袭转移的关系.方法 ①用免疫组化法检测175例石蜡组织标本(癌旁正常组织30例,腺瘤组织25例,结直肠癌组织75例,淋巴结转移癌45例)中的FMNL2的表达.②用Real time PCR法分析FMNL2 mRNA在32对新鲜结直肠癌组织及相应癌旁正常组织中的表达情况.结果 ①FMNL2蛋白在结直肠癌组织中的表达高于癌旁正常组织(阳性表达百分比为80%与27%,Z=-2.937,P=0.003);在淋巴结转移癌中的表达高于原发癌组织(阳性表达百分比为87%与80%,Z=-2.085,P=0.037);在转移的癌组织中的表达高于未发生转移的癌组织(阳性表达百分比为87%与70%,Z=-2.557,P=0.011).②FMNL2 mRNA的表达与浸润程度、分化程度无关,但在发生转移的癌组织中的表达高于未发生转移的癌组织,是其2.05倍.结论FMNL2可能与结直肠癌的转移有一定的相关性.

The expression and clinical significance of formlin-like 2 in colorectal carcinoma

Objective To analyze the relationship between the expression of formlin-like 2(FMNL2)and colorectal carcinoma metastasis through the detection of the expression of FMNL2 in colorectal carcinoma tissue and paracancerous tissue.Methods ①Immunohistochemistry was used to detect the expression of FMNL2 in 175 cases of paraffin wax specimens(including 30 cases of normal mucosa,25 cases of adenoma,75 cases of colorectal carcinoma and 45 cases of metastatic tumors).②Real time-PCR was used to detect FMNL2 mRNA expression in 32 cases of fresh specimens of carcinoma and 32 cases of paracancerous tissue.Results The positive detection rate of FMNL2 was higher in colorectal carcinoma tissue than in paracancerous tissue(P=0.003),higher in lymphatic metastasis than in primary carcinoma tissue(P=0.037),and was aslo higher in metastatic carcinoma tissue than in non metastatic carcinoma tissue(P=0.011).The expression of FMNL2 mRNA was not related to the infiltration and differentiation of carcinoma tissue but its concentration in metastatic carcinoma tissue was 2.5 times higher than in non metastatic carcinoma tissue.Conclusion FMNL2 gene may play an important role in the metastasis of colorectal carcinoma.