Over-expression of LRIG3 suppresses growth and invasion of bladder cancer cells

The purpose of this study was to investigate the impact of leucine-rich repeats and immunoglobulin-like domains 3 (LRIG3) on the biological features of bladder cancer cell lines. The plasmids of over-expressed LRIG3 and the blank plasmid serving as control were transfected into the bladder cancer cell lines, T24, EJ and BIU-87, and the expression levels of LRIG3 mRNA and protein were detected by using real-time PCR and Western blotting. The changes in the cell cycle and apoptosis were examined by using flow cytometry. The invasive ability was measured by Transwell assay, and CCK-8 assays were used to measure the proliferation of cells. As compared with the control group, the LRIG3 mRNA and protein expression levels in LRIG3 cDNA-transfected group were raised significantly (P<0.05). The average number of cells with up-regulated LRIG3 passing through the inserted filter was decreased significantly as compared with the control group (P<0.05). Up-regulation of LRIG3 also could inhibit proliferation and induce apoptosis of T24, EJ and BIU-87 cells. Except BIU-87, the T24 and EJ cells transfected with LIRG3 cDNA were arrested in G 0 /G 1 phase compared to the control group (P<0.05). In conclusion, the over-expression of LRIG3 could influence the cell cycle and invasion, inhibit proliferation and induce apoptosis in the three bladder cancer cell lines.     

microRNA-203在膀胱癌中的表达及功能研究

目的:验证microRNA-203在膀胱癌组织中的表达水平,并观察microRNA-203对膀胱癌细胞T24增殖和转移能力的影响。方法:选取膀胱癌组织和正常组织各20例,通过实时定量PCR分析microRNA-203的表达。通过转染上调microRNA-203在T24细胞中的表达,并通过PCR验证转染效率。再进一步通过CCK-8法检测microRNA-203上调后细胞增殖能力的变化。采用Annexin V-PI双染法观察microRNA-203对膀胱癌细胞凋亡的影响,采用transwell法观察microRNA-203对膀胱癌细胞转移能力的影响。结果:与正常组织相比,膀胱癌组织的microRNA-203表达明显降低(P0,.05)。上调T24细胞microRNA-203表达后,与对照组相比,细胞增殖能力明显减弱,并且可观察到有凋亡现象发生。进一步的transwell法可观察到microRNA-203可明显抑制T24细胞侵袭。结论:microRNA-203在膀胱癌的发生发展过程中发挥着明显的抑癌作用。     

17β-雌二醇联合5-氮胞苷上调前列腺癌22RV1细胞p75NTR表达并促进凋亡的研究

目的 探讨17β-雌二醇(E2)联合DNA去甲基化试剂5-氮胞苷(5-AzaC)对雄激素非依赖性前列腺癌22RV1细胞生长抑制和凋亡的影响及作用机制. 方法 应用17β-E2和/或5-AzaC 处理前列腺癌22RV1细胞,并检测细胞生长抑制率、凋亡率以及雌激素受体2(ESR2)和p75神经生长因子受体(p75NTR)的表达情况. 结果 17β-E2或5-AzaC呈时间及浓度依赖性抑制22RV1细胞增殖,17β-E2和5-AzaC 48 h IC50分别是0.2 μmol/L和4.0 μmol/L.17β-E2(0.2 μmol/L)+5-AzaC(4.0 μmol/L)对22RV1细胞的增殖抑制及凋亡表现出协同作用,17β-E2或5-AzaC均能上调ESR2和p75NTR的mRNA及蛋白的表达,且联合应用时效果更明显. 结论 联合应用 17β-E2和5-AzaC上调ESR2和p75NTR的表达可能是雄激素非依赖性前列腺癌治疗的一个潜在的治疗策略.     

可重复使用的双腔骨生长检测盒的动物体内实验

目的 探讨可重复使用的双腔骨生长检测盒置入贵州小型猪体内检测人工骨成骨能力的可行性.方法 以2只贵州小型猪的双侧肱骨和股骨近侧干骺端为实验检测部位.第1次手术2只动物双侧肱骨和股骨近侧干骺端均置入不填充任何材料的双腔骨盒作为空白对照组(n=8).第2次手术动物肱骨和股骨近侧干骺端置入的双腔骨盒一侧内腔填充重组合异种骨,另一侧内腔不填充任何材料作为实验组1(n=8).第3次手术动物肱骨和股骨近侧干骺端置入的双腔骨盒一侧内腔填充重组合异种骨,另一侧内腔填充明胶海绵作为实验组2(n=8).每次手术间隔2个月,更换骨盒内芯,对内芯填充物行肉眼观察和组织学观察,比较填充物的成骨情况.结果 实验组骨盒一侧填充重组合异种骨内芯见灰白间红色组织,质地硬;空腔或填充明胶海绵内芯见褐色组织,质地软.光镜下,实验组填充重组合异种骨内芯见成骨材料周围有新生骨组织生成,另一侧空腔或填充明胶海棉侧内芯为纤维组织.结论 可重复使用的骨生长检测盒可用于观察成骨材料促进骨组织生长能力.     

吲哚菁绿荧光腹腔镜下根治性前列腺切除术5例报告并文献复习

目的 探讨吲哚菁绿(ICG)引导的荧光腹腔镜在前列腺癌根治性切除术(LRP)+超扩大盆腔淋巴结清扫(sePLND)中的应用价值,并结合相关文献总结该显影技术的特点.方法 回顾性分析2020年5月至2020年6月我院采用ICG荧光腹腔镜系统开展LRP+sePLND的5例局部晚期前列腺癌患者的临床资料.所有患者术前均经前列...