MOL PSYCHIATR:智力障碍小鼠模型的建立

2017-09-30 海北 MedSci原创

无义介导的RNA降解(NMD)是高度保守和选择性的RNA降解途径,其能在特定情况下终止RNA的阅读框架。NMD以组织特异性和发育控制的方式进行调节,因此其具有影响发育过程的可能性。

无义介导的RNA降解(NMD)是高度保守和选择性的RNA降解途径,其能在特定情况下终止RNA的阅读框架。NMD以组织特异性和发育控制的方式进行调节,因此其具有影响发育过程的可能性。事实上,NMD因子的损失或消耗已经显示破坏生物系统发育规模的能力。在人类中,NMD因子UPF3B的基因突变会导致智力障碍(ID),并与自闭症谱系障碍(ASD),注意缺陷多动障碍(ADHD)和精神分裂症(SCZ)强烈相关。 最近,研究人员制造并表征了携带有无效Upf3b等位基因的小鼠。这些带有无效Upf3b基因的小鼠在恐惧条件学习中表现出缺陷,但是其在空间学习方面没有缺陷。这些小鼠在前脉冲抑制(PPI)中也具有显著缺陷。前脉冲抑制是一种在精神分裂以及其他脑部疾病的患者中经常具有缺陷的感觉运动门控的测量方法。与前脉冲抑制以及学习缺陷一致,来自Upf3b缺失小鼠的皮质锥体神经元在体内表现出树突棘的成熟缺陷。此外,来自Upf3b缺失小鼠的神经干细胞分化能力受损,无法长期培养产生具有电生理活性的功能性神经元。额叶皮层的RNA测序(RNAseq)分析鉴定了UPF3B调节的RNA,包括神经分化,成熟和疾病中已知功能的蛋白质

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    2021-01-28 linxia1230

    谢谢分享

    0

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    2017-10-01 sunfeifeiyang

    智障老鼠的基因制作

    0

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    2017-09-30 130****4638

    学习了谢谢分享

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