乳腺浸润性导管癌中HMGA1和CXCR4的表达及临床意义

摘要

目的 探讨高迁移率族蛋白A1 ( high mobility group Al,HMGA1)和趋化因子受体4 (C-X-C chemokine receptor 4, CXCR4)在乳腺浸润性导管癌组织中的表达及临床意义.方法 采用免疫组化法检测105例乳腺浸润性导管癌和80例乳腺腺病组织中HMGA1和CXCR4的表达,并分析两者表达与临床病理特征的相关性.结果 HMGA1和CXCR4在乳腺浸润性导管癌组织中的阳性率明显高于乳腺腺病14％ υs 26.25％,73.33％ υs 23.75％ ),差异有统计学意义(P＜0.001).HM-GA1和CXCR4在乳腺癌组织中的表达差异无统计学意义(r=0.104,P = 0.289),提示两者的表达相互独立,且两者联合检测能够提高诊断的敏感性(两者任一阳性)和特异性(两者均为阳性).CXCR4在PR阳性的乳腺浸润性导管癌组织中的阳性率(87.5％)高于PR阴性浸润性导管癌(60.0％),差异有统计学意义(P=0.008).结论 HMGA1在乳腺浸润性导管癌组织中高表达,CXCR4在乳腺浸润性导管癌组织中以低表达为主,两者均具有较高的敏感性,联合检测能够明显提高乳腺癌诊断的敏感性和特异性.HMGA1、CXCR4在乳腺组织中的高表达,对于乳腺癌的诊断和预后评估具有一定的临床意义,有望为乳腺癌的诊断和治疗提供一种新的理论基础.%Purpose To investigate the expression of high mobility group protein Al (HMGA1) and C-X-C chemokine receptor 4 (CXCR4) in breast invasive ductal carcinoma and its clinical significance. Methods Immunohistochemical method was used to detect the expression of HMGA1 and CXCR4 in 105 cases of breast invasive ductal carcinoma and 80 cases of breast adenosis. The correlation between HMGA1 and CXCR4 expression and clinicopathological features was analyzed. Results The positive rate of HMGA1 and CXCR4 in breast invasive ductal carcinoma was significantly higher than that of breast adenosis(77.14％ vs 26.25％, 73.33％ vs 23.75％ ), the difference was statistically significant (P＜ 0.001). There was no significant correlation between HMGA1 and CXCR4 expression in breast cancer tissues (r = 0.104, P =0.289), suggesting that the expression of them were independent of each other. The combined detection of HMGA1 and CXCR4 could improve the sensitivity of diagnosis of (either positive) and specificity of(both positive). The positive rate of CXCR4 in PR positive breast cancer (87.5％ ) was higher than that in PR negative(60.0％ ), the difference was statistically significant (P =0.008) Conclusion HMGA1 is highly expressed in breast invasive ductal carcinoma, and CXCR4 expression is mainly low in breast invasive ductal carcinoma. HMGA1 and CXCR4 have higher sensitivity, and the combined detection of them can significantly improve the sensitivity and specificity of breast cancer diagnosis. The high expression of HMGA1 and CXCR4 in breast cancer has a certain clinical significance for the diagnosis and prognosis of breast cancer, which is expected to provide a new theoretical basis for the diagnosis and treatment of clinical breast cancer.