A series of human tissue samples and cultured cell lines were formalin-fixed and paraffin-embedded. Specimen cylinder (1.2-1.8mm) were punched by a modified bone marrow biopsy needle and arrayed on a recipient paraffi...A series of human tissue samples and cultured cell lines were formalin-fixed and paraffin-embedded. Specimen cylinder (1.2-1.8mm) were punched by a modified bone marrow biopsy needle and arrayed on a recipient paraffin block. Microscopic analysis on the sections from this tissue microarray (TMA) block demonstrated that the spots of tissues and cells were well preserved, and the cultured cell samples were successfully embedded from 5×10 4 to 2×10 5 in number. These TMA sections were also suitable for immunohistochemistry and RNA in situ hybridization.展开更多
Objective To study the expression of p16, cyclin D1, Rb and phosphorylated Rb(Ser795) in the esophageal squamous cell carcinoma. Methods Immunohistochemistry was performed and analysed on 34 cases of paraffin-embedded...Objective To study the expression of p16, cyclin D1, Rb and phosphorylated Rb(Ser795) in the esophageal squamous cell carcinoma. Methods Immunohistochemistry was performed and analysed on 34 cases of paraffin-embedded tissues. Results The expression of phosphorylated Rb(Ser795) was positively correlated to that of cyclin D1 (r= 0.401, P= 0.021) and inversely to that of p16 (r= -0.348, P= 0.044). In stepwise regression and the best subset regression, the expression of p16 (P=0.034) and phosphorylated Rb(Ser795) (P= 0.030) were the only determinants of the mitotic index. Conclusion The expression of phosphorylated Rb(Ser795) could be considered as a mark of the interaction between p16 and cyclin D1. The detection of phosphorylated Rb, p16 and cyclin D1 will be possibly helpful to the oncogenesis investigation on the esophageal carcinoma.展开更多
文摘A series of human tissue samples and cultured cell lines were formalin-fixed and paraffin-embedded. Specimen cylinder (1.2-1.8mm) were punched by a modified bone marrow biopsy needle and arrayed on a recipient paraffin block. Microscopic analysis on the sections from this tissue microarray (TMA) block demonstrated that the spots of tissues and cells were well preserved, and the cultured cell samples were successfully embedded from 5×10 4 to 2×10 5 in number. These TMA sections were also suitable for immunohistochemistry and RNA in situ hybridization.
文摘Objective To study the expression of p16, cyclin D1, Rb and phosphorylated Rb(Ser795) in the esophageal squamous cell carcinoma. Methods Immunohistochemistry was performed and analysed on 34 cases of paraffin-embedded tissues. Results The expression of phosphorylated Rb(Ser795) was positively correlated to that of cyclin D1 (r= 0.401, P= 0.021) and inversely to that of p16 (r= -0.348, P= 0.044). In stepwise regression and the best subset regression, the expression of p16 (P=0.034) and phosphorylated Rb(Ser795) (P= 0.030) were the only determinants of the mitotic index. Conclusion The expression of phosphorylated Rb(Ser795) could be considered as a mark of the interaction between p16 and cyclin D1. The detection of phosphorylated Rb, p16 and cyclin D1 will be possibly helpful to the oncogenesis investigation on the esophageal carcinoma.
