【摘要】 目的 觀察CyclinD1在食管鱗狀細(xì)胞癌和癌周正常食管組織的表達(dá),從量化角度闡明其在食管鱗狀細(xì)胞癌組織中表達(dá)的病理學(xué)意義及其與CyclinE表達(dá)的關(guān)系。 方法 用免疫組化MaxVision法檢測CyclinD1、CyclinE在食管鱗狀細(xì)胞癌和癌周正常食管組織的表達(dá),Image-pro plus圖像分析軟件對其表達(dá)強(qiáng)度進(jìn)行定量分析,并用表達(dá)的陽性單位(positive unit,PU)反映其表達(dá)強(qiáng)度。 結(jié)果 CyclinD1蛋白在食管鱗狀細(xì)胞癌癌細(xì)胞核中表達(dá)的PU值高于正常食管組織(Plt;0.001);CyclinD1蛋白表達(dá)的PU值與食管鱗狀細(xì)胞癌分化程度有關(guān)(Plt;0.001);浸潤漿膜層組的CyclinD1蛋白表達(dá)的PU值高于無漿膜層浸潤組(P=0.037);伴淋巴結(jié)轉(zhuǎn)移組的CyclinD1蛋白表達(dá)的PU值高于無淋巴結(jié)轉(zhuǎn)移組(P=0.012);CyclinD1與CyclinE蛋白在食管鱗狀細(xì)胞癌中表達(dá)呈正相關(guān)(r=0.650,Plt;0.01)。 結(jié)論 CyclinD1在食管鱗狀細(xì)胞癌中表達(dá)上調(diào),且與生物學(xué)特性相關(guān),可作為判斷腫瘤患者預(yù)后不良的標(biāo)志之一;CyclinD1和CyclinE可能在食管癌癌變過程中起協(xié)同作用。/【Abstract】 Objective To observe the expression of CyclinD1 and its correlation with the expression of CyclinE in esophagus squamous carcinoma. Methods The expressions of CyclinD1 and CyclinE protein were detected by immunohistochemistry (MaxVision method) using the monoclonal antibody and their intensities were assessed quantitatively by Image-pro plus image analysis system. Results The monoclonal antibody was detected in specific cell nucleus. The positive unit (PU) value of CyclinD1 was larger in the esophagus squamous carcinoma than that in the normal esophagus tissue with a statistically significant difference (Plt;0.001). The expression of CyclinD1 was correlated with differentiation of esophagus squamous carcinoma (Plt;0.001) and infiltration degree of esophagus squamous carcinoma (P=0.037). The PU value of CyclinD1 of the nuclei was larger in esophagus squamous carcinoma with lymph node metastasis than those without lymph node metastasis (P=0.012). There was a positive correlation between CyclinD1 protein and CyclinE protein (r=0.650, Plt;0.01). Conclusion The positive expression of CyclinD1 is up-regulated in the esophagus squamous carcinoma. CyclinD1 protein relates to the clinicopathological characteristics and prognostic value in esophagus squamous carcinoma. CyclinD1 expression is bly associated with CyclinE expression in esophagus squamous carcinoma.
目的探討不同放射劑量的125Ⅰ粒子對BGC823人低分化胃癌細(xì)胞的影響。 方法將BGC823人低分化胃癌細(xì)胞懸液種植于64只BLAB nu/nu裸鼠的皮下,以制備荷瘤鼠模型。待荷瘤鼠模型飼養(yǎng)3周左右、腫瘤生長至0.7~1.2 cm時(shí),將其隨機(jī)分為4組:空白對照組、低劑量組、中劑量組及高劑量組(n=16)。其中,空白對照組裸鼠植入空白粒子,低、中及高劑量組分別植入放射劑量為1.48×10-7、2.22×10-7及2.96×10-7 Bq的125Ⅰ粒子。分別于粒子植入前、植入后7、14、21及28 d,4組均隨機(jī)抽取4只荷瘤鼠處死,剝?nèi)×鲶w稱重,并計(jì)算腫瘤體積;分別于植入粒子后14 d和28 d,測量4組荷瘤鼠腫瘤組織的細(xì)胞凋亡率和細(xì)胞周期因子E(cyclinE)mRNA的表達(dá)水平。 結(jié)果①除空白對照組外(空白對照組的變化不大),低、中及高劑量組的腫瘤體積和腫瘤質(zhì)量隨時(shí)間延長均呈下降趨勢。粒子植入后7、14、21及28 d,低、中及高劑量組的腫瘤體積和腫瘤質(zhì)量均小于(輕于)空白對照組(P<0.05),且在28 d時(shí),低劑量組的腫瘤體積和腫瘤質(zhì)量均小于(輕于)中劑量組和高劑量組(P<0.05)。②14 d和28 d時(shí),低、中及高劑量組的凋亡率均高于空白對照組(P<0.05),而cyclinE mRNA的表達(dá)水平均低于空白對照組(P<0.05)。28 d時(shí),低劑量組的凋亡率高于中劑量組和高劑量組(P<0.05),而cyclinE mRNA的表達(dá)水平卻低于該2組(P<0.05)。同組內(nèi)與14 d比較,28 d時(shí)除空白對照組的差異無統(tǒng)計(jì)學(xué)意義外(P>0.05),其余3組的凋亡率均較高(P<0.05),而cyclinE mRNA的表達(dá)水平均較低(P<0.05)。 結(jié)論125Ⅰ粒子組織間植入可有效抑制人低分化胃癌組織的生長,可抑制其cyclinE mRNA的表達(dá);與其他劑量相比(2.22×10-7 Bq及2.96×10-7 Bq),低劑量(1.48×10-7 Bq)的125Ⅰ粒子持續(xù)照射可誘導(dǎo)BGC823人低分化胃癌細(xì)胞的凋亡增加。