p120-连环蛋白在不同膀胱癌细胞株中的表达及对膀胱癌BIU-87细胞增殖、侵袭和黏附能力的影响  

Expression of p120-catenin in different bladder cancer cells and effect of p120-catenin to the prolifer-ation, invasion and adhesion of human bladder carcinoma cell line BIU-87 in vitro

作　　者：梁凯[1] 卢德祥[1] 

机构地区：[1]黑龙江省医院南岗院区泌尿外科,哈尔滨150001

出　　处：《中华泌尿外科杂志》2014年第7期543-546,共4页Chinese Journal of Urology

摘　　要：目的：探讨p120-连环蛋白在膀胱癌BIU-87和T24细胞株中的表达水平，分析p120-连环蛋白下调对膀胱癌BIU-87细胞增殖、侵袭和黏附能力的影响。方法2010年8月至2011年5月，采用实时定量PCR和蛋白质印迹技术检测膀胱癌BIU-87和T24细胞株中p120-连环蛋白的表达水平。将膀胱癌 BIU-87细胞分为3组：未转染组，转染p120-连环蛋白siRNA 组和转染control siRNA组，应用siRNA方法沉默BIU-87细胞中p120-连环蛋白基因表达，采用噻唑盐法和克隆形成实验检测p120-连环蛋白siRNA对BIU-87细胞生长率的影响，Transwell小室法检测BIU-87细胞侵袭能力的变化，细胞黏附人工重组基底膜实验检测BIU-87细胞黏附能力的变化。结果 p120-连环蛋白在膀胱癌BIU-87和T24细胞株中均有表达，在BIU-87细胞株中的表达水平（0．11±0．39）显著高于T24细胞株（0．48±0．17），差异有统计学意义（P＜0．05）。噻唑盐法检测BIU-87细胞的增殖能力，转染p120-连环蛋白siRNA组的生长增殖率（182．7±13．4）％显著高于转染control siRNA组的（95．5±9．9）％和未转染组的100．0％，差异有统计学意义（ P＜0．05）。转染p120-连环蛋白siRNA组BIU-87细胞侵袭数量[（217．5±15．9）个]明显高于转染 control siRNA 组[（105．4±10．1）个]和未转染组[（92．7±8．3）个]，差异有统计学意义（ P＜0．05）。转染 p120-连环蛋白 siRNA 组 BIU-87细胞的黏附能力（57．3±6．4）％明显低于转染control siRNA组（98．1±11．0）％和未转染组100．0％，差异有统计学意义（ P＜0．05）。结论 p120-连环蛋白在恶性度低的膀胱癌细胞中表达水平高，其表达下调可促进膀胱癌细胞的增殖和侵袭，抑制膀胱癌细胞的黏附。Objective To investigate the expression of p 120-catenin in human bladder cell line BIU-87 and T24.And to explore the effect of down-regulation of p120-catenin on proliferation, invasion and adhesion of BIU-87 cell line. Methods The study was from Aug .2010 to May.2011.Real-time RT-PCR and Western blot were used to examine the expression of p 120-catenin in human bladder cell line BIU-87 and T24.There were three study groups：non-transfected group , the group transfected with p 120-catenin siRNA and the group transfected with control siRNA .p120-catenin siRNA was used to decrease the expression of p120-catenin.MTT assay and colony formation assay were used to study the BIU-87 cell growth and cell pro-liferation.The invasion of BIU-87 cells was measured by Transwell chamber assay .Cell adhesion artificial re-constituted basement membrane assay was used to examine the change of BIU-87 cell adhesion capacity . Results In both BIU-87 and T24 cells there were the expressions of p 120-catenin.But the expression in BIU-87 cells （0.11±0.39） was more than that in T24 cells （0.48±0.17）.The decreased of p120-catenin ex-pression could enhance the proliferation （182.7±13.4%） and the invasiveness （217.5±15.9） and decrease the adhesion capacity （57.3±6.4%） of BIU-87 cells. Conclusions There is higher expression level of p120-catenin in lower-grade malignant bladder cancer cells .The down-regulation of p120-catenin promotes the bladder cancer proliferation and invasiveness of bladder carcinoma cells , and inhibited the bladder canc-er cell adhesion .

关 键 词：p120-连环蛋白 BIU-87细胞 增殖 侵袭 黏附 

分 类 号：R737.14[医药卫生—肿瘤]