Deficient LAR expression decreases basal forebrain cholinergic neuronal size and hippocampal cholinergic innervation

Deficient LAR expression decreases basal forebrain cholinergic neuronal size and hippocampal cholinergic innervation
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LAR 表达不足会降低基底前脑胆碱能神经元大小和海马胆碱能神经支配

DOI:
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发表时间:
1997
影响因子:
4.2
通讯作者:
F. Longo
F. Longo
中科院分区:
医学3区
文献类型:
--
作者:
T. Yeo;Tao Yang;S. Massa;Julie S. Zhang;J. Honkaniemi;L. Butcher;F. Longo

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在缺乏功能性白细胞共同抗原相关(LAR) PTPase受体的果蝇突变体中发现异常的神经突生长,提示蛋白酪氨酸磷酸酶(PTPase)受体在神经发育中的作用;然而,PTPase在哺乳动物神经系统中的功能仍有待确定。在含有LAR基因陷阱的转基因小鼠中,只发现了微量的LAR全长转录本的表达。小鼠基底前脑胆碱能神经元大小明显减少,齿状回胆碱能神经支配明显减少。这些发现首次证明了哺乳动物PTPase突变体中存在异常的神经元表型,并支持了LAR型PTPase受体建立和/或维持神经元网络的假设。j . >。Res. 47:348-360, 1997。©1997 Wiley‐Liss, Inc。
A role in neural development for protein tyrosine phosphatase (PTPase) receptors has been suggested by the finding of aberrant neurite outgrowth in Drosophila mutants lacking functional leukocyte common antigen‐related (LAR) PTPase receptors; however, PTPase functions in the mammalian nervous system remain to be established. In transgenic mice containing a gene trap in the LAR gene, only trace expression of full‐length LAR transcripts was found. In these mice, the size of basal forebrain cholinergic neurons was significantly reduced and cholinergic innervation of the dentate gyrus was markedly decreased. These findings constitute the first demonstration of an aberrant neuronal phenotype in a mammalian PTPase mutant and support the hypothesis that LAR‐type PTPase receptors function to establish and/or maintain neuronal networks. J. Neurosci. Res. 47:348–360, 1997. © 1997 Wiley‐Liss, Inc.
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