肺腺癌中CD147、 MMP-9和VEGF的表达及临床意义

摘要

目的 观察肺腺癌中CD147、MMP-9和VEGF蛋白表达,并分析三者表达的相关性.方法 采用免疫组化SP法检测90例肺腺癌、10例肺良性病变和10例相对正常肺组织中CD147、MMP-9和VEGF蛋白表达,用Imagepro Plus图像分析软件测试3种蛋白在肺腺癌中的阳性强度.结果 CD147、MMP-9和VEGF蛋白表达的阳性单位(positive unit,PU)值在肺腺癌组织中均显著高于相对正常肺组织和肺良性病变组织(P均＜0.001).在90例肺腺癌中,CD147、MMP-9和VEGF的阳性率分别为88.89％ (80/90)、84.44％ (76/90)、80％ (72/90).CD147、MMP-9和VEGF均分别与肺腺癌组织学分化程度、淋巴结转移及TNM分期有关(P均＜0.001),三者与肺腺癌患者年龄、吸烟史、大体类型均无关(P均＞0.05).CD147表达和MMP-9、VEGF表达均呈显著正相关(rp=0.992,rp=0.984,P均＜0.001).结论 CD147、MMP-9和VEGF可能在肺腺癌发生、发展中起重要作用,推测CD147刺激肿瘤细胞产生MMP-9和VEGF,进而促进肺腺癌的浸润和转移,可以作为肺腺癌免疫治疗的潜在靶点.%Purpose To investigate the expression of CD147,MMP-9 and VEGF and their relationships in lung adenocarcinoma.Methods The expression of CD147,MMP-9 and VEGF proteins was examined in 90 lung adenocarcinoma tissues by SP immunohistochemical method.The positive unit (PU) of CD147,MMP-9 and VEGF was assessed quantitatively using Imagepro Plus image analysis software.Results Positive intensity of CD147,MMP-9 and VEGF in lung adenocarcinoma was significantly higher than that in non-neoplastic internal controls and benign control tissues (P ＜ 0.001).The positive rates of CD147,MMP-9 and VEGF were 88.89％ (80/90),84.44％ (76/90),and 80％ (72/90),respectively.The expression of CD147,MMP-9 and VEGF was positively correlated with the degree of histologic differentiation,lymph node metastasis status and TNM stage (P ＜ 0.001).CD147 was correlated positively with MMP-9 and VEGF expression (rp =0.992,rp =0.984,P ＜ 0.001).Conclusion CD147,MMP-9 and VEGF may play an important role in the pathogenesis and progression of lung adenocarcinoma;CD147 may induce tumor invasion and metastasis by stimulating production of MMP-9 and VEGF,which is expected to be a potential promising target for immunotherapy.