中国神经再生研究(英文版) ›› 2014, Vol. 9 ›› Issue (10): 1068-1074.doi: 10.4103/1673-5374.133173

• 原著:退行性病与再生 • 上一篇    下一篇

脊髓小脑性共济失调患者中未发现谷氨酸δ2受体基因突变

  

  • 收稿日期:2014-04-26 出版日期:2014-05-26 发布日期:2014-05-26

The human δ2 glutamate receptor gene is not mutated in patients with spinocerebellar ataxia

Jinxiang Huang 1, Aiyu Lin 2, Haiyan Dong 3, Chaodong Wang 3   

  1. 1 Department of Neurosurgery, Changzheng Hospital, the Second Military Medical University, Shanghai, China
    2 Department of Neurology, the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian Province, China
    3 Department of Neurology, the Affiliated Sanming First Hospital, Fujian Medical University, Sanming, Fujian Province, China
  • Received:2014-04-26 Online:2014-05-26 Published:2014-05-26
  • Contact: Chaodong Wang, M.D., Department of Neurology, Affiliated Sanming First Hospital, Fujian Medical University, Sanming 365000, Fujian Province, China, cdongwang01@126.com.
  • Supported by:

    This study was supported by grants from the National Natural Science Foundation of China, No. 81371320, and the Project for Young and Middle-Aged Talents of Fujian Health Care System, No. 2013-ZQN-JC-29.

摘要:

由于人与小鼠谷氨酸δ2受体2基因存在90%的同源性,而小鼠谷氨酸δ2受体基因与小脑功能密切相关,且易发生导致共济失调的自发性突变,人类是否会发生如此次现象?我们对24名家族或散发性脊髓小脑性共济失调患者和52名正常对照组进行了人谷氨酸δ2受体2基因突变筛查,结果发现,在谷氨酸δ2受体2基因全长16个外显子中未发现任何点突变或插入/缺失突变。然而,在患者和正常对照中,新发现一个4号内含子的4nt缺失多态(IVS5-121_-118 GAGT),同时在9号和13号外显子编码区各发现一个单核苷酸多态性,即c.1251G>T和IVS14-63C>G。这些多态性在患者和正常对照中的出现频率接近。实验结果验证人谷氨酸δ2受体2基因通常不发生自发性突变,且人脊髓小脑性共济失调的发生与谷氨酸δ2受体2基因突变或多态性无关。

 

关键词: 神经再生, 脊髓小脑性共济失调, 谷氨酸δ2受体, 基因突变, 基因多态性, 单核苷酸多态性, NSFC grant

Abstract:

The human glutamate receptor delta 2 gene (GRID2) shares 90% homology with the orthologous mouse gene. The mouse Grid2 gene is involved with functions of the cerebellum and spontaneous mutation of Grid2 leads to a spinocerebellar ataxia-like phenotype. To investigate whether such mutations occur in humans, we screened for mutations in the coding sequence of GRID2 in 24 patients with familial or sporadic spinocerebellar ataxia and in 52 normal controls. We detected no point mutations or insertion/deletion mutations in the 16 exons of GRID2. However, a polymorphic 4 nucleotide deletion (IVS5-121_-118 GAGT) and two single nucleotide polymorphisms (c.1251G>T and IVS14-63C>G) were identified. The frequency of these polymorphisms was similar between spinocerebellar ataxia patients and normal controls. These data indicate that spontaneous mutations do not occur in GRID2 and that the incidence of spinocerebellar ataxia in humans is not associated with GRID2 mutation or polymorphisms.

Key words: nerve regeneration, spinocerebellar ataxia, δ2 glutamate receptor, mutation, gene    , polymorphism, single nucleotide polymorphism, NSFC grant, neural regeneration

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