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A study on correlation of hepatic metastasis of colorectal cancer to vascular endothelical growth factor,angiopoietin-2,and fibronectin
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF GASTROINTESTINAL SURGERY
- Issue:
- 1
- DOI:
- 10.3760/cma.j.issn.1671-0274.2005.01.007
- Key Word:
- 结肠直肠肿瘤;肝转移;血管内皮生长因子;血管形成因子-2;纤连蛋白
Abstract： 目的研究结直肠癌组织中血管内皮生长因子(VEGF)和血管形成因子-2(angiopoietin-2)及纤连蛋白(FN)的表达情况及其与结直肠癌肝转移的关系.方法获取结直肠癌标本60例,分别用SQRT-PCR和免疫组织化学染色法检测VEGF、血管形成因子-2、FN的mRNA转录和蛋白表达水平.结果结直肠癌组织中VEGF、血管形成因子-2和FN的mRNA转录和蛋白表达水平增高(P＜0.05).VEGF表达水平与肿瘤浸润深度、淋巴结和/或肝转移、Dukes分期有关(P＜0.05).血管形成因子-2则仅与癌组织的分化程度有关(P＜0.05).FN在细胞外基质(ECM)中的表达高于癌旁组织(P＜0.05);而在基底膜中的表达低于癌旁组织(P＜0.05);两者均与癌浸润深度和淋巴结转移有关(P＜0.05).而基底膜中FN的缺失同时与肝转移有关(P＜0.05).结论结直肠癌细胞产生的VEGF可能通过促进肿瘤新生血管的生成而促进血行转移和转移灶的形成,血管形成因子-2与VEGF共同促进肿瘤血管的生成,而FN在肿瘤组织基底膜中的缺失是肝转移的重要起始因素.
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