食管鳞癌组织中PI3K和基质金属蛋白酶-7的表达及其临床意义

目的 研究PI3K和基质金属蛋白酶-7(MMP-7)在食管鳞癌组织(ESCC)中的表达及其与食管鳞癌细胞发生、发展与转移的关系以及两者之间的相关性.方法 应用免疫组织化学SP法检测24例正常食管黏膜、94例食管鳞癌组织中PI3K和MMP-7的表述情况.结果 食管癌组织中PI3K和MMP-7的阳性表达率分别为71.28%(67/94)和52.13%(49/94),与正常食管黏膜组织阳性表达率4.17%(1/24)和O%(0/24)相比,差异均有统计学意义(P均<0.01);PI3K蛋白的表达与食管癌细胞的分化程度、淋巴结转移、浸润深度及临床分期显著相关(P均<0.01);MMP-7表达率与淋巴结转移(P<0.05)、分化程度(P<0.05)、浸润深度(P<0.01)和临床分期(P<0.05)等因素有关;PI3K与MMP-7表达呈显著正相关(r=0.232,P=0.025).结论 PI3K、MMP-7表达与食管癌发生、发展及侵袭转移有关,可作为评价食管鳞癌生物学行为的指标.

Expression and clinical significance of PI3K and MMP-7 proteins in esophageal squamous cell carcinoma.

Objective To study the expression of PI3K and MMP-7 in esophageal carcinoma and the rela-tionship between the expression of PI3K and MMP-7 and carcinogenesis and progression of esophageal carcinoma. Methods PI3K and MMP-7 expression were detected in 24 normal esophageal mucosa,94 primary tumor tissues with SP immunohistochemistal method. Results There were significant differences of PI3K and MMP-7 expressions between esophageal carcinoma and normal mucesa epithelium ( all P < 0.01 ) [71.28% (67/94) vs 4.17% ( 1/24 ) and 52.13% (49/94) vs 0% (0/24)]. There were significant correlations between PI3K expression and the degrees of differentiation,invasive depth,clinical staging and the metastasis of lymph node (all P <0.01 ). The positive ex-pression rate of MMP-7 had the relationship with metastasis of lymph node (P < 0.05 ), the degrees of differentiation ( P < 0.05 ) invasive depth ( P < 0.01 ), and clinical staging( P < 0.05 ) . There was a positive relationship between PI3K and MMP-7 expression in this study (r = 0. 232 ,P = 0.025). Conlusions PBK and MMP-7 play an impor-tant roles in carcinogenesis and progression of esophageal carcinoma and can be used as valuable biomarkers to eval-uate biological characteristics in esophageal squamous cell carcinoma.