基础医学与临床 ›› 2018, Vol. 38 ›› Issue (10): 1403-1407.

• 研究论文 • 上一篇    下一篇

小鼠海马MAM钙信号转导相关蛋白表达的增龄变化

蒋淑君,王娜,王德华,于延铭   

  1. 滨州医学院
  • 收稿日期:2018-06-21 修回日期:2018-07-14 出版日期:2018-10-05 发布日期:2018-09-28
  • 通讯作者: 蒋淑君 E-mail:jiangshujun1@163.com
  • 基金资助:
    线粒体-内质网结构偶联(MAM)介导ALR在脑缺血状态下的神经保护作用研究

MAM calcium signal transduction-associated protein expression in hippocampus of mice with aging

  • Received:2018-06-21 Revised:2018-07-14 Online:2018-10-05 Published:2018-09-28
  • Contact: JIANG Shu-Jun E-mail:jiangshujun1@163.com

摘要: 目的 探讨小鼠海马线粒体-内质网结构偶联(MAM)钙信号转导相关蛋白表达的增龄变化。方法 用实时荧光定量PCR和Western blot检测2、6、12、18和24月龄小鼠海马MAM钙信号转导相关蛋白(GRP75、IP3R、VDAC1和Sig-1R)mRNA和蛋白表达。结果 24月龄组 IP3R mRNA表达较2月龄组显著降低(P<0.05)。GRP75 mRNA和蛋白表达随年龄增长均显著增加(P<0.01, P<0.05)。 24月龄组Sig-1R mRNA和蛋白表达较2月龄组显著性降低(P<0.05)。结论 小鼠海马MAM钙信号转导相关蛋白GRP75、Sig-1R随年龄增长mRNA和蛋白表达变化参与衰老过程。

关键词: 衰老, 线粒体内质网结构偶联, 海马, 基因表达

Abstract: Objective To investigate the age-related changes of MAM-coupled calcium signal transduction related proteins in mice hippocampus. Methods Real-time fluorescence quantitative PCR and Western blot were used to detect the mRNA and protein expression of MAM calcium signal transduction-related proteins (GRP75, IP3R, VDAC1 and Sig-1R) in hippocampus of mice at 2, 6, 12, 18 and 24 months old. Results The expression of IP3R mRNA in the 24 months old group was significantly lower than that in the 2 month old group (P<0.05). GRP75 mRNA and protein expression increased significantly with age (P<0.01, P<0.05). The expression of Sig-1R mRNA and protein in the 24-month-old group was significantly lower than that in the 2-month-old group (P<0.05). Conclusion The expression of mRNA and protein in the hippocampus MAM calcium signal transduction-related proteins GRP75 and Sig-1R are involved in the senescence process.

Key words: Aging, Mitochondrial-associated endoplasmic reticulum membranes, Hippocampus, Gene expression

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