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10号染色体缺失的磷酸酶及张力蛋白同源物和趋化因子配体18在老年三阴及非三阴乳腺癌中的表达差异及意义 被引量:5

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摘要 目的探讨10号染色体缺失的磷酸酶及张力蛋白同源物(PTEN)和趋化因子配体(CCL)18在老年三阴乳腺癌(TNBC)及非三阴乳腺癌(NTNBC)中的表达差异及其可能的临床意义。方法采用SP免疫组化法分别检测PTEN和CCL18在25例NTNBC、25例TNBC(两组均未行新辅助化疗,术后病理分期相近)及15例良性乳腺增生病(BBD)中的表达情况。结果 PTEN、CCL18均在胞膜、胞质表达。PTEN在NTNBC组、TNBC组阳性表达率分别为92%和68%,差异显著(P=0.011),而在BBD组中PTEN阳性率达到了100%;CCL18在NTNBC组中阳性率为88%,在TNBC组中为100%,差异不显著(P=0.247),CCL18在BBD组中则无表达。NTNBC组CCL18阳性表达主要位于癌巢区域,癌间质较少,TNBC组则主要表现为癌巢及癌间质区域的广泛强阳性。各组阳性切片积分光密度值(IOD)分析提示TNBC组PTEN表达水平较NTNBC组有明显下调(P<0.01),而CCL18则为高表达(P<0.01)。结论老年三阴乳腺癌较非三阴乳腺癌有显著的PTEN表达下调或缺失,同时伴随CCL18广泛高表达,这可能是导致其较非三阴型易发生化疗耐药及远处转移的原因之一。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2016年第10期2354-2356,共3页 Chinese Journal of Gerontology
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