趋化因子IL-8，MCP-1和MIP-1对非小细胞肺癌血管生成的作用和意义

目的: 检测非小细胞肺癌(non-small cell lung cancer,NSCLC)组织中趋化因子白细胞介素-8(IL-8)、单核细胞趋化蛋白-1(MCP-1)和巨噬细胞炎性蛋白-1(MIP-1 )mRNA的表达,分析它们与微血管计数(MVC)的相互关系及其对NSCLC临床病理特征的意义.方法: 采用原位杂交法检测40例NSCLC和10例正常肺组织石蜡切片标本中IL-8,MCP-1和MIP-1 mRNA的表达情况,采用免疫组织化学法测定上述标本中微血管(MV)计数.结果: 40例NSCLC组织中IL-8,MCP-1和MIP-1 mRNA的阳性系数均值明显高于10例肺组织对照组,差异有统计学意义,并且随着NSCLC临床病理的改变而出现相应的变化,表现为T3组＞T2或T1组,Ⅲ期组＞Ⅱ期组＞I期组,有淋巴结和远处转移组＞无转移组,生存时间≤3年组大于生存时间＞3年组.IL-8,MCP-1和MIP-1 mRNA阳性表达相互之间以及与MVC之间均存在着密切的正相关.结论:上述结果提示NSCLC组织中趋化因子IL-8,MCP-1和MIP-1可能相互协同,共同促进肿瘤血管生成,并影响肿瘤的进展、转移和预后.

Effect of chemokine interleukin-8, monocyte chemoattractant protein-1and macrophage inflammatory protein-1 on the angiogenesisof non-small cell lung cancer

Objective To detect the expressions of chemokines interleukin-8 (IL-8), monocyte chemoattractant protein-1 (MCP-1), and macrophage inflammatory protein-1 (MIP-1) mRNA in non-small cell lung cancer (NSCLC) tissues, to analyze their relationship with microvessel counts (MVC), and their significance in clinic pathologic features of NSCLC. Methods In situ hybridization was used to measure the expressions of chemokine IL-8, MCP-1, and MIP-1 mRNA in 40 NSCLC tissues and 10 normal pulmonary tissues, and immunohistochemical staining was carried out to measure the MVC in the above tissues. Results The positive ratios of IL-8, MCP-1, and MIP-1 mRNA in the 40 NSCLC tissues were apparently higher than those in the 10 normal contrast tissues,and the difference was statistically significant. The numbers varied accordingly with the different clinic pathologic features of NSCLC, showing that Group T3 > Group T2 or Group T1, Group III stage> Group II stage> Group I stage,Group lymph node and remote transferred > Group non-transferred, and Group of survival time no more than 3 years> Group of survival time more than 3 years. The positive expressions among IL-8, MCP-1,and MIP-1 mRNA and between these and the MVC all had mutually positive correlation. Conclusion Chemokine IL-8, MIP-1, and MIP-1 in NSCLC tissues might cooperate with one another to promote the tumor angiogenesis, and affect the progression, metastasis and prognosis of the tumor.