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Therapeutic implications for striatal-enriched protein tyrosine phosphatase (STEP) in neuropsychiatric disorders.
Pharmacological Reviews ( IF 19.3 ) Pub Date : 2011-11-16 , DOI: 10.1124/pr.110.003053
Susan M Goebel-Goody 1 , Matthew Baum , Constantinos D Paspalas , Stephanie M Fernandez , Niki C Carty , Pradeep Kurup , Paul J Lombroso
Affiliation  

Striatal-enriched protein tyrosine phosphatase (STEP) is a brain-specific phosphatase that modulates key signaling molecules involved in synaptic plasticity and neuronal function. Targets include extracellular-regulated kinase 1 and 2 (ERK1/2), stress-activated protein kinase p38 (p38), the Src family tyrosine kinase Fyn, N-methyl-D-aspartate receptors (NMDARs), and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (AMPARs). STEP-mediated dephosphorylation of ERK1/2, p38, and Fyn leads to inactivation of these enzymes, whereas STEP-mediated dephosphorylation of surface NMDARs and AMPARs promotes their endocytosis. Accordingly, the current model of STEP function posits that it opposes long-term potentiation and promotes long-term depression. Phosphorylation, cleavage, dimerization, ubiquitination, and local translation all converge to maintain an appropriate balance of STEP in the central nervous system. Accumulating evidence over the past decade indicates that STEP dysregulation contributes to the pathophysiology of several neuropsychiatric disorders, including Alzheimer's disease, schizophrenia, fragile X syndrome, epileptogenesis, alcohol-induced memory loss, Huntington's disease, drug abuse, stroke/ischemia, and inflammatory pain. This comprehensive review discusses STEP expression and regulation and highlights how disrupted STEP function contributes to the pathophysiology of diverse neuropsychiatric disorders.

中文翻译:

纹状体富集蛋白酪氨酸磷酸酶 (STEP) 在神经精神疾病中的治疗意义。

纹状体富集蛋白酪氨酸磷酸酶 (STEP) 是一种大脑特异性磷酸酶,可调节参与突触可塑性和神经元功能的关键信号分子。靶标包括细胞外调节激酶 1 和 2 (ERK1/2)、应激激活蛋白激酶 p38 (p38)、Src 家族酪氨酸激酶 Fyn、N-甲基-D-天冬氨酸受体 (NMDAR) 和 α-氨基-3 -羟基-5-甲基-4-异恶唑丙酸受体 (AMPAR)。STEP 介导的 ERK1/2、p38 和 Fyn 的去磷酸化导致这些酶失活,而 STEP 介导的表面 NMDAR 和 AMPAR 的去磷酸化促进它们的内吞作用。因此,当前的 STEP 函数模型假定它反对长期增强并促进长期抑郁。磷酸化、裂解、二聚化、泛素化、和局部翻译都汇聚在一起,以维持中枢神经系统中 STEP 的适当平衡。过去十年积累的证据表明,STEP 失调会导致多种神经精神疾病的病理生理学,包括阿尔茨海默病、精神分裂症、脆性 X 综合征、癫痫发生、酒精性记忆丧失、亨廷顿病、药物滥用、中风/缺血和炎症性疼痛. 这篇综合评论讨论了 STEP 的表达和调节,并强调了 STEP 功能的破坏如何导致各种神经精神疾病的病理生理学。包括阿尔茨海默病、精神分裂症、脆性 X 综合征、癫痫发生、酒精性记忆丧失、亨廷顿病、药物滥用、中风/缺血和炎症性疼痛。这篇综合评论讨论了 STEP 的表达和调节,并强调了 STEP 功能的破坏如何导致各种神经精神疾病的病理生理学。包括阿尔茨海默病、精神分裂症、脆性 X 综合征、癫痫发生、酒精性记忆丧失、亨廷顿病、药物滥用、中风/缺血和炎症性疼痛。这篇综合综述讨论了 STEP 的表达和调节,并强调了 STEP 功能的破坏如何导致各种神经精神疾病的病理生理学。
更新日期:2019-11-01
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