背景与目的所谓肺硬化性血管瘤(so-called pul monary sclerosing hemangioma,PSH)是一种迄今未能确定其组织来源及性质的少见肺部肿瘤,多年来一直是人们研究的热点。本研究通过检测E-cad-herin、β-catenin和p120ctn在PSH表面立方细胞...背景与目的所谓肺硬化性血管瘤(so-called pul monary sclerosing hemangioma,PSH)是一种迄今未能确定其组织来源及性质的少见肺部肿瘤,多年来一直是人们研究的热点。本研究通过检测E-cad-herin、β-catenin和p120ctn在PSH表面立方细胞和间质多角形细胞的免疫表型以探讨其组织来源。方法采用S-P免疫组化法检测25例手术切除PSH标本及8例肺炎性假瘤标本的E-cadherin、β-catenin和p120ctn表达情况。结果25例PSH的立方细胞中,三种上皮粘附分子E-cadherin、β-catenin和p120ctn均呈胞膜强阳性表达,β-catenin在胞膜强阳性表达的同时有胞质表达。而在多角形细胞中,E-cadherin表达缺失,β-catenin胞膜表达缺失伴部分胞质表达,p120ctn胞质表达为主伴少量胞膜表达;三种粘附分子在多角形细胞中的表达存在异质性。血管瘤样区的腔内衬细胞E-cadherin、β-catenin和p120ctn均呈胞质胞膜阳性表达。8例肺炎性假瘤中增生的Ⅱ型肺泡细胞E-cadherin、β-catenin和p120ctn表达与PSH中立方细胞的表达情况相同。结论PSH中的立方细胞可能是增生的Ⅱ型肺泡细胞,而多角形细胞为肿瘤的实质细胞且缺乏分化成熟的上皮细胞所具有的E-cadherin/catenin复合体。血管瘤样区的腔内衬细胞是与立方细胞相同的上皮细胞而非血管内皮细胞。展开更多
In order to detect molecular markers for the epidermal growth factor inhibitor 4-(3-chloro-benzyl)- 6,7-dimethoxy-quinazoline (tyrphostin), we investigated the kinetics of p120-catenin and periplakin in the human bucc...In order to detect molecular markers for the epidermal growth factor inhibitor 4-(3-chloro-benzyl)- 6,7-dimethoxy-quinazoline (tyrphostin), we investigated the kinetics of p120-catenin and periplakin in the human buccal mucosa squamous cancer cell line BICR 10 treated with 3 nM tyrphostin. Growth of BICR 10 cells was inhibited by treatment with tyrphostin. Although changes were not observed in the expression of EGFR and p120-catenin, expression of Akt, Src and periplakin in BICR 10 treated with 3 nM tyrphostin tended to decrease. In addition, phosphorylation of EGFR, Akt and Src was inhibited by treatment with tyrphostin. On immunocytochemical staining, immunoreactions with phosphorylated EGFR, phosphorylated Akt and phosphorylated p120-catenin were weak in BICR 10 treated with tyrphostin. There was a slight immunocy to chemical reaction to periplakin in BICR 10 cells induced by tyrphostin. In conclusion, the decrease in phosphorylation in EGFR and p120-catenin by tyrphostin, following the decrease in Src or Akt phosphorylation, may inhibit expression of several growth factors associated with the proliferation and migration of cancer cells.展开更多
目的:检测雌激素受体(ER)、孕激素受体(PR)阴性乳腺癌组织中连环蛋白P120(P120ctn)的表达,分析其与临床病理因素的关系。方法:采用免疫组织化学染色的方法对比分析了52例ER、PR阴性乳腺癌组织和23例癌旁正常乳腺组织及21例乳腺纤维腺瘤...目的:检测雌激素受体(ER)、孕激素受体(PR)阴性乳腺癌组织中连环蛋白P120(P120ctn)的表达,分析其与临床病理因素的关系。方法:采用免疫组织化学染色的方法对比分析了52例ER、PR阴性乳腺癌组织和23例癌旁正常乳腺组织及21例乳腺纤维腺瘤组织中P120ctn的表达。结果:52例ER、PR阴性乳腺癌组织中有32例P120ctn(61.53%)膜表达弱阳性或阴性表达,29例(52.76%)胞质表达阳性,总异常表达35例(67.30%)。21例乳腺纤维腺瘤组织中膜表达弱阳性6例(28.57%),胞质无表达。23例癌旁正常乳腺组织仅有2例为膜表达弱阳性(8.69%),其余均为胞膜正常表达。三者比较差异有显著性。29例组织分级Ⅰ～Ⅱ和23例组织分级Ⅲ中P120ctn的异常表达率分别为48.27% vs 78.26%(P<0.05);30例有淋巴结转移和22例无淋巴结转移的癌组织P120ctn的异常表达率分别为76.66% vs 40.90%(P<0.05);17例临床分期Ⅰ～Ⅱ和35例临床分期Ⅲ～Ⅳ组织中P120ctn的异常表达率分别为58.82% vs 65.71%(P>0.05)。P120ctn的异常表达与ER、PR阴性乳腺癌的组织学分级、淋巴结转移密切相关(P<0.05),与临床分期无关(P>0.05)。结论:P120ctn在ER、PR阴性乳腺癌的异常表达明显,可作为评估预后的一项有价值指标。展开更多
文摘背景与目的所谓肺硬化性血管瘤(so-called pul monary sclerosing hemangioma,PSH)是一种迄今未能确定其组织来源及性质的少见肺部肿瘤,多年来一直是人们研究的热点。本研究通过检测E-cad-herin、β-catenin和p120ctn在PSH表面立方细胞和间质多角形细胞的免疫表型以探讨其组织来源。方法采用S-P免疫组化法检测25例手术切除PSH标本及8例肺炎性假瘤标本的E-cadherin、β-catenin和p120ctn表达情况。结果25例PSH的立方细胞中,三种上皮粘附分子E-cadherin、β-catenin和p120ctn均呈胞膜强阳性表达,β-catenin在胞膜强阳性表达的同时有胞质表达。而在多角形细胞中,E-cadherin表达缺失,β-catenin胞膜表达缺失伴部分胞质表达,p120ctn胞质表达为主伴少量胞膜表达;三种粘附分子在多角形细胞中的表达存在异质性。血管瘤样区的腔内衬细胞E-cadherin、β-catenin和p120ctn均呈胞质胞膜阳性表达。8例肺炎性假瘤中增生的Ⅱ型肺泡细胞E-cadherin、β-catenin和p120ctn表达与PSH中立方细胞的表达情况相同。结论PSH中的立方细胞可能是增生的Ⅱ型肺泡细胞,而多角形细胞为肿瘤的实质细胞且缺乏分化成熟的上皮细胞所具有的E-cadherin/catenin复合体。血管瘤样区的腔内衬细胞是与立方细胞相同的上皮细胞而非血管内皮细胞。
文摘In order to detect molecular markers for the epidermal growth factor inhibitor 4-(3-chloro-benzyl)- 6,7-dimethoxy-quinazoline (tyrphostin), we investigated the kinetics of p120-catenin and periplakin in the human buccal mucosa squamous cancer cell line BICR 10 treated with 3 nM tyrphostin. Growth of BICR 10 cells was inhibited by treatment with tyrphostin. Although changes were not observed in the expression of EGFR and p120-catenin, expression of Akt, Src and periplakin in BICR 10 treated with 3 nM tyrphostin tended to decrease. In addition, phosphorylation of EGFR, Akt and Src was inhibited by treatment with tyrphostin. On immunocytochemical staining, immunoreactions with phosphorylated EGFR, phosphorylated Akt and phosphorylated p120-catenin were weak in BICR 10 treated with tyrphostin. There was a slight immunocy to chemical reaction to periplakin in BICR 10 cells induced by tyrphostin. In conclusion, the decrease in phosphorylation in EGFR and p120-catenin by tyrphostin, following the decrease in Src or Akt phosphorylation, may inhibit expression of several growth factors associated with the proliferation and migration of cancer cells.
文摘目的:检测雌激素受体(ER)、孕激素受体(PR)阴性乳腺癌组织中连环蛋白P120(P120ctn)的表达,分析其与临床病理因素的关系。方法:采用免疫组织化学染色的方法对比分析了52例ER、PR阴性乳腺癌组织和23例癌旁正常乳腺组织及21例乳腺纤维腺瘤组织中P120ctn的表达。结果:52例ER、PR阴性乳腺癌组织中有32例P120ctn(61.53%)膜表达弱阳性或阴性表达,29例(52.76%)胞质表达阳性,总异常表达35例(67.30%)。21例乳腺纤维腺瘤组织中膜表达弱阳性6例(28.57%),胞质无表达。23例癌旁正常乳腺组织仅有2例为膜表达弱阳性(8.69%),其余均为胞膜正常表达。三者比较差异有显著性。29例组织分级Ⅰ～Ⅱ和23例组织分级Ⅲ中P120ctn的异常表达率分别为48.27% vs 78.26%(P<0.05);30例有淋巴结转移和22例无淋巴结转移的癌组织P120ctn的异常表达率分别为76.66% vs 40.90%(P<0.05);17例临床分期Ⅰ～Ⅱ和35例临床分期Ⅲ～Ⅳ组织中P120ctn的异常表达率分别为58.82% vs 65.71%(P>0.05)。P120ctn的异常表达与ER、PR阴性乳腺癌的组织学分级、淋巴结转移密切相关(P<0.05),与临床分期无关(P>0.05)。结论:P120ctn在ER、PR阴性乳腺癌的异常表达明显,可作为评估预后的一项有价值指标。
