CIP2A 及c-M yc在宫颈癌组织中的表达及相关性分析

目的：检测蛋白磷酸酶2A的癌性抑制因子（CIP2A ）和c‐M yc蛋白在宫颈癌组织中的表达水平并分析二者表达的相关性。方法运用免疫组织化学染色技术检测CIP2A和c‐M yc蛋白在72例宫颈癌和12例正常宫颈组织中的表达水平，分析CIP2A和c‐Myc与宫颈临床病理特征的相关性以及二者表达的相关性。结果 CIP2A和c‐Myc蛋白在宫颈癌组织中的阳性率分别为52．8％（38／72）和56．9％（41／72），而二者在正常宫颈组织中的阳性率分别为8．3％（1／12）和25．0％（3／12），差异有统计学意义（χ2＝8．169，P＝0．004；χ2＝4．208，P＝0．040）。CIP2A和c‐Myc蛋白表达与肿瘤组织病理分化和临床分期显著相关（P＜0．05），而与年龄、淋巴结转移和肿瘤病理类型无明显相关性。Pearson相关分析结果显示宫颈癌组织中CIP2A与c‐Myc蛋白表达呈显著正相关（r＝0．673，P＝0．001）。结论宫颈癌组织中CIP2A高表达与恶性临床病理特征密切相关，并与c‐Myc蛋白表达呈显著正相关。

The expression of CIP2A and c-Myc and their correlation analysis in cervical carcinoma tissues

Objective To investigate the expression of CIP2A and c‐Myc and their correlation in cervical carcinoma .Methods We detected CIP2A and c‐Myc expression using immunohistochemistry in 72 samples of cervical carcinoma and 12 samples of normal cervix tissues .Correlation between proteins and clinicopathologic features and relation between CIP2A and c‐Myc expression were analyzed .Results The positive expression of CIP2A and c‐Myc in cervical carcinoma tissues were 52 .8% and 56 .9% ,respec‐tively .While their positive expression in normal cervix tissues were 8 .3% and 25 .0% ,respectively .The differences had statistical significance(χ2 =8 .169 ,P=0 .004 ;χ2 =4 .208 ,P=0 .040 ,respectively ) .Clinicopathological analysis suggested that CIP2A and c‐Myc protein expression were associated with histopathological differentiation and clinical stage(P<0 .05) in cervical carcinoma ,but the protein expression was not related to age ,lymph node metastasis and pathological type .CIP2A was significantly positive correla‐ted with c‐Myc protein in cervical carcinoma(r=0 .673 ,P=0 .001) .Conclusion The high‐expression of CIP2A is correlated with malignant clinicopathologic characteristics ,and CIP2A is positively associated with c‐Myc ,suggesting that CIP2A may promote tumor initiation and development through maintaining c‐Myc protein in cervical carcinoma .