眼科 ›› 2011, Vol. 20 ›› Issue (6): 408-411.

• 论著 • 上一篇    下一篇


PAX6基因及其下游促分化基因在视网膜母细胞瘤分化过程中的作用

申令  史季桐  李彬  赵博文  白淑玮  张浩   

  1. 100005 首都医科大学附属北京同仁医院 北京同仁眼科中心 北京市眼科学与视觉科学重点实验室 北京市眼科研究所
  • 收稿日期:2011-08-04 出版日期:2011-11-25 发布日期:2012-01-05
  • 通讯作者: 李彬,Email:libin43_99@163.com E-mail:libin43_99@163.com

The role of PAX6 and its downstream gene on differentiation of human retinoblastoma cells

SHEN Ling, SHI Ji-tong, LI Bin, ZHAO Bo-wen, BAI Shu-wei, ZHANG Hao   

  1. Beijing Institute of Ophthalmology, Beijing Ophthalmology and Visual Science Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
  • Received:2011-08-04 Online:2011-11-25 Published:2012-01-05
  • Contact: LI Bin, Email: libin43_99@163.com E-mail:libin43_99@163.com

摘要:  目的 检测在视网膜母细胞瘤(retinoblastoma,RB)中,眼发育调控基因PAX6及其下游促分化基因MATH5和BRN3b在蛋白水平的表达情况,从而探讨PAX6基因在RB分化过程中的作用。 设计 病例对照研究。研究对象 新鲜RB组织10例,正常视网膜组织10例。方法  实验组:RB组织;对照组:正常视网膜组织。采用WesternBlot法检测新鲜视网膜母细胞瘤组织和正常视网膜组织中Pax6、Math5、Brn3b蛋白质水平的表达情况并作比较。主要指标 Pax6、Math5、Brn3b蛋白质的表达水平。结果 本研究中RB组织和正常视网膜组织中均可检测出Pax6、Math5、Brn3b蛋白的表达。与正常视网膜组织相比较,RB组织中Pax6、Math5、Brn3b蛋白的表达水平增高(P均<0.001);Math5与Pax6蛋白表达具有线性相关性(r=0.949, P<0.001), Brn3b与Math5蛋白表达具有线性相关性(r=0.927, P<0.001)。结论 在RB组织中, PAX6基因上调下游促分化基因MATH5和BRN3b表达水平,促进RB组织的分化。

关键词: 视网膜母细胞瘤, 分化, Pax6, Math5, Brn3b

Abstract:  Objective To detect the protein expression of PAX6,MATH5 and BRN3b in retinoblastoma (RB) and normal retinal tissue. Design Case-control study. Participants Ten cases of fresh RB solid tumors and ten cases of normal retinal tissue. Methods Objectives were collected and studied by WesternBlot to compare the protein expression of Pax6, Math5 and Brn3b in fresh RB solid tumors with those in normal retinal tissue. Main Outcome Measrues The protein expression of Pax6, Math5 and Brn3b. Results The protein expresion of Pax6, Math5 and Brn3b were positive in both groups. Pax6, Math5 and Brn3b protein expression in RB tumors increased significantly compared with those in normal retinal tissue (P all<0.001). The protein expression of Math5 positively correlated with the Pax6 expression(r=0.949, P<0.001), and the protein expression of Brn3b positively correlated with the Math5 expression(r=0.927, P<0.001). Conclusion  PAX6 gene has a role in differentiation of RB cells through up-regulated the protein expression of MATH5 and BRN36 gene.

Key words: retinoblastoma, differentiation, Pax6, Math5, Brn3b