BACE1-Dependent Neuregulin-1 Signaling: An Implication for Schizophrenia.

BACE1-Dependent Neuregulin-1 Signaling: An Implication for Schizophrenia.
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BACE1 依赖性 Neuregulin-1 信号转导:对精神分裂症的影响

DOI:
10.3389/fnmol.2017.00302
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发表时间:
2017
影响因子:
4.8
通讯作者:
Li R
Li R
中科院分区:
医学2区
文献类型:
--
作者:
Zhang Z;Huang J;Shen Y;Li R

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精神分裂症是一种慢性精神疾病,在普通人群中终生患病率约为1%。最近的研究表明,神经调节蛋白-1(Nrg1)是精神分裂症的候选基因。至少15个NRG1异构体的选择性剪接都包含一个细胞外表皮生长因子(EGF)样结构域,该结构域足以支持NRG1的生物活性,包括形成髓鞘和调节突触可塑性。已知Nrg1可被β分泌酶(BACE1)切割,其N末端片段(Nrg1-ntf)与受体酪氨酸激酶ErbB4结合,激活Nrg1/ErbB4信号转导。虽然Nrg1在精神分裂症中表达水平的变化仍然存在争议,但了解BACE1裂解的Nrg1-NTF和Nrg1/ErbB4信号在精神分裂症神经发病中的作用是必要的和重要的。本文主要包括三个部分:(1)Nrg1的结构和BACE1的切割模式;(2)人类研究中依赖BACE1的Nrg1切割与精神分裂症的关系;(3)Nrg1和BACE1突变的动物研究和行为观察。我们的综述将使我们更好地了解Nrg1在精神分裂症中的作用,并提供一种潜在的策略,将Nrg1的BACE1裂解作为诊断精神分裂症的唯一生物标志物,以及新的治疗靶点。
Schizophrenia is a chronic psychiatric disorder with a lifetime prevalence of about 1% in the general population. Recent studies have shown that Neuregulin-1 (Nrg1) is a candidate gene for schizophrenia. At least 15 alternative splicing of NRG1 isoforms all contain an extracellular epidermal growth factor (EGF)-like domain, which is sufficient for Nrg1 biological activity including the formation of myelin sheaths and the regulation of synaptic plasticity. It is known that Nrg1 can be cleaved by β-secretase (BACE1) and the resulting N-terminal fragment (Nrg1-ntf) binds to receptor tyrosine kinase ErbB4, which activates Nrg1/ErbB4 signaling. While changes in Nrg1 expression levels in schizophrenia still remain controversial, understanding the BACE1-cleaved Nrg1-ntf and Nrg1/ErbB4 signaling in schizophrenia neuropathogenesis is essential and important. In this review paper, we included three major parts: (1) Nrg1 structure and cleavage pattern by BACE1; (2) BACE1-dependent Nrg1 cleavage associated with schizophrenia in human studies; and (3) Animal studies of Nrg1 and BACE1 mutations with behavioral observations. Our review will provide a better understanding of Nrg1 in schizophrenia and a potential strategy for using BACE1 cleavage of Nrg1 as a unique biomarker for diagnosis, as well as a new therapeutic target, of schizophrenia.
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