[摘要] 目的 檢測Ki-67、ER、PR和C-erbB-2在乳腺癌組織中的表達并探討其相關關系。方法 應用免疫組化法,檢測乳腺癌組織中ER、PR和C-erbB-2的表達,分析前者與后三者間的相關關系。結果 Ki-67、ER、PR和C-erbB-2陽性表達率分別為79.52%、63.25%、60.24%、66.26%,Ki-67表達強度與C-erbB-2 呈正相關性,與ER、PR 呈負相關性。結論 乳腺癌組織中Ki-67與ER、PR和C-erbB-2有明確的相關關系,聯合檢測具有實際的臨床意義,可作為臨床病理因素之外早期識別具有高浸潤和轉移潛能的乳腺癌及判斷其預后的有用指標。
[關鍵詞] 乳腺癌; 免疫組化; Ki-67; ER; PR; C-erbB-2
[中圖分類號] R737.9 [文獻標識碼] A [文章編號] 1673-9701(2009)13-03-03
Study of the Relationship between Ki-67,ER,PR and C-erbB-2 in Breast Cancer Tissues
GUO Yanwei
Department of Oncology,The First Affiliated Hospital of Nanyang Medical College,Henan 473058
[Abstract] ObjectiveTo detect the expression ofKi-67,ER,PR and C-erbB-2 in breast cancer tissues and discuss the relationship between Ki-67,ER,PR,C-erbB-2 and clinical pathological factors. MethodsImmunohistochemical method was used to detect the expression ofKi-67,ER,PR and C-erbB-2 in breast cancer tissue. ResultsThe positivity rate of the expression ofKi-67,ER,PR and C-erbB-2 were 79.52%,63.25%,60.24%,66.26% respectively. The expression of Ki-67 had positive correlation with C-erbB-2(x2=109.79,P<0.01),but had negative correlation with ER and PR(x2=30.14,P<0.01;x2=36.71,P<0.01). ConclusionThe expression of Ki-67,ER,PR and C-erbB-2 are all higher in breast tumor tissues,which indicates to be useful for the prognosis judgement. Co-detection ofKi-67,ER,PR and C-erbB-2 can elevate the sensitivity of prognosis evaluation. So,they can be used to detect high infiltrating and high metastasizing tumor,and evaluate their prognosis.
[Key Words]Breast cancer; Immunohistochemistry; Ki-67; ER; PR; C-erbB-2
目前國內外對Ki-67與ER、PR和C-erbB-2相關關系方面的研究還存在較多的不同觀點。我們應用免疫組化實驗方法聯合檢測166例乳腺癌組織中Ki-67、ER、PR和C-erbB-2的表達,并探討其相關關系,現報道如下。
1 材料與方法
1.1 標本來源
乳腺癌腫瘤組織均來自2004年12月~2007年2月南陽醫學高等專科學校附屬醫院,有完整原癌病灶、淋巴結和癌旁組織的乳腺癌標本。均為女性,年齡27~79歲,平均(53.2±11.2)歲。組織學類型:浸潤性導管癌150例,浸潤性小葉癌8例,髓樣癌6例,小管癌2例。有區域淋巴結轉移者68例。
1.2 方法
免疫組化S-P染色,步驟如下:(1)烤片,68℃,20min;(2)常規二甲苯脫蠟,梯度酒精脫水;(3)阻斷:滅活內源性過氧化物酶:3%H2o2 37℃孵育10min,PBS沖洗3×5min;(4)抗原修復:置0.01M枸櫞酸緩沖液(pH 6.0)中用煮沸(95℃,15~20min),自然冷卻20min 以上,再用冷水沖洗缸子,加快冷卻至室溫,PBS沖洗3×5min。(5)正常羊血清工作液封閉,37℃10 min,傾去勿洗;(6)滴加一抗4℃ 冰箱孵育過夜,PBS沖洗3×5min(用PBS緩沖液代替一抗作陰性對照);滴加生物素標記二抗,37℃孵育30min,PBS沖洗3×5min;(7)滴加辣根過氧化物酶標記的鏈霉素卵白素工作液,37℃孵育30min,PBS沖洗3×5min;……