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碳酸酐酶Ⅸ蛋白在乳腺癌分子分型中的表达及其意义 被引量:4

Significance of carbonic anhydrase IX protein expression in molecular subtyping of breast cancers
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摘要 目的探讨碳酸酐酶Ⅸ蛋白在乳腺癌分子分型中的表达及其意义。方法采用免疫组织化学MaxVision法检测117例乳腺浸润性导管癌中雌激素受体(ER)、孕激素受体(PR)、HER2、CK5/6、表皮生长因子受体(EGFR)、碳酸酐酶Ⅸ的表达。结果浸润性导管癌患者年龄25—71岁,平均49.6岁。117例中分5型:管腔A型66例(56.4%)、管腔B型6例(5.1%)、HER2过表达型10例(8.6%)、基底细胞样型20例(17.1%)、未分类型15例(12.8%)。碳酸酐酶Ⅸ在管腔A型和基底细胞样型乳腺癌中的表达比例分别为13.6%(9/66)和8/20,差异有统计学意义(P〈0.05)。管腔A型中碳酸酐酶Ⅸ的阳性表达率,肿瘤最大径〉2cm组(7/27,25.9%)明显高于≤2cm组(2/39,5.1%),差异有统计学意义(P〈0.05)。碳酸酐酶Ⅸ在组织学3级(18/50,36.0%)中的表达明显高于1级(2/21,9.5%)和2级(7/46,15.2%),差异有统计学意义(均P=0.006)。碳酸酐酶Ⅸ表达阴性的病例中,ER和PR的阳性率分别为61.1%(55/90)和55.6%(50/90);碳酸酐酶Ⅸ表达阳性的病例中,ER和PR的阳性率分别为37.0%(10/27)和29.6%(8/27)。碳酸酐酶Ⅸ表达阴性组激素受体的阳性率均明显高于阳性表达组,二者差异有统计学意义(均P〈0.05)。结论碳酸酐酶Ⅸ表达不仅与乳腺浸润性导管癌的分子分型有关,还与组织学分级、激素受体表达情况、肿瘤大小有关。碳酸酐酶Ⅸ是乳腺癌预后差的相对独立的标志物。 Objective To study the expression of carbonic anhydrase (CA) IX and its significance in molecular subtyping of breast carcinomas. Method MaxVision immunohistochemieal staining was used to examine the expression of ER, PR, HER2, CK5/6, EGFR, and CA IX in 117 cases of breast invasive ductal carcinomas. Results The patients' age ranged from 25 to 71 years (mean 49. 6 years). All the 117 cases were subclassified into five subtypes, with 66 ( 56. 4% ) luminal A, 6 ( 5.1% ) luminal B, 10(8.6% ) HER2 positive, 20( 17.1% ) basal-like, and 15( 12. 8% ) unclassified tumors. The expression of CA IX in luminal A and basal-like breast cancers was 13.6% (9/66) and 8/20, respectively, with a significant difference ( P 〈 O. 05 ). Among the luminal A cancers, the expression of CA IX in tumors 〉 2 cm (7/27, 25. 9% ) was significantly (P 〈0. 05) higher than that of tumors ~〈2 cm (2/39, 5. 1% ). The expression of CA IX in grade 3 invasive ductal carcinoma ( 18/50, 36. 0% ) was significantly higher than that in grade 1 (2/21,9. 5% ) and 2 (7/46, 15.2% ) tumors (both P =0. 006). In CA IX-negative of invasive ductal carcinoma, the expression of ER and PR was 61.1% (55/90) and 55.6% (50/90), respectively ; whereas in CA IX-positive cancers, the expression of ER and PR was 37.0% (10/27) and 29. 6% (8/27), respectively. The expression of hormone receptors in CA IX-negative tumors was significantly higher than that in CA IX-positive tumors ( for both ER and PR, P 〈 O. 05 ). Conclusions The expression of CA IX correlates not only with molecular subtypes of breast cancer, but also with the grading, hormone receptors and diameter of mammary invasive duetal carcinoma. CA IX is a relative independent marker of poor prognosis in breast cancer.
出处 《中华病理学杂志》 CAS CSCD 北大核心 2013年第3期182-185,共4页 Chinese Journal of Pathology
基金 浙江省医药卫生一般研究计划(2012KYB217)
关键词 乳腺肿瘤 分子分型 碳酸酐酶类 Breast neoplasms Molecular typing Carbonic anhydrases
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参考文献13

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