摘要目的 研究信号转导和转录活化因子3(STAT3),Bcl-2和基质金属蛋白酶(MMP)2在结直肠腺瘤与腺癌中的表达,研究其与结直肠腺癌临床病理特征和预后的关系,阐明三者在结直肠腺癌的浸润转移、判断预后中的作用.方法 选取东阳市人民医院2011年1月至2012年1月结直肠黏膜慢性炎50例,结直肠腺瘤50例,结直肠腺癌100例石蜡标本,其中结直肠腺癌伴远处转移35例,无远处转移65例,采用Envison二步法检测STAT3,Bcl-2和MMP2在三种组织中的表达.结果 (1)STAT3,Bcl-2和MMP2在结直肠腺瘤、腺癌的阳性表达率明显高于在结直肠黏膜慢性炎中的阳性表达率,差异有统计学意义(P＜0.05).(2)STAT3、MMP2在结直肠腺癌伴有远处转移病例的阳性表达率明显高于没有远处转移的病例,差异有统计学意义(P＜0.05).(3)Bcl-2在结直肠腺癌伴有远处转移病例的阳性表达率与没有远处转移病例的阳性表达率差异无统计学意义(P＞0.05).结论 STAT3,Bcl-2和MMP2均与结直肠癌的发生,发展有关;STAT3和MMP2与结直肠癌的远处转移相关,可能提示患者预后不良,可作为评价结直肠腺癌复发与转移、不良生存预后的候选临床标志.

abstractsObjective To investigate the expressions of signal transducer and activator of transcription factor 3 (STAT3),Bcl-2,and matrix metalloproteinase 2 (MMP2) in colorectal adenomas and adenocarcinomas,and the relationship of those factors with the colorectal clinicopathological features and prognosis of intestinal adenocarcinomas,and explore their roles in invasion,metastasis,and prognosis of a colorectal cancer.Methods The samples were selected from Dongyang City People's Hospital from January 2011 to January 2012,including 50 cases of paraffin-coded colorectal mucosas with chronic inflammation,50 cases of paraffincoded colorectal adenomas,and 100 cases of paraffin-coded colorectal adenocarcinomas (35 cases with metastasis and 65 cases without distant metastasis).Envison two method was used to detect the expressions of STAT3,Bcl-2,and MMP2 in each sample.Results The expressions of STAT3,Bcl-2,and MMP2 in colorectal adenomas and adenocarcinomas were significantly higher than those in colorectal mucosas with chronic inflammation (P ＜ 0.05).The expressions of STAT3 and MMP2 in colorectal adenocarcinomas with distant metastasis were significantly higher than that those without distant metastasis (P ＜ 0.05).The expression of BCL-2 had no significant difference between colorectal adenocarcinomas with and without distant metastasis (P ＞ 0.05).Conclusions STAT3,Bcl-2 and MMP2 were associated with occurrence and development of colorectal carcinoma.STAT3 was associated with distant metastasis of colorectal carcinoma and might indicate a poor prognosis.STAT3 might be used as a candidate clinical sign for recurrence,metastasis,and poor survival prognosis of colorectal adenocarcinoma.