The Role of HSP90α in Methamphetamine/Hyperthermia-Induced Necroptosis in Rat Striatal Neurons.

The Role of HSP90α in Methamphetamine/Hyperthermia-Induced Necroptosis in Rat Striatal Neurons.
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HSP90α 在甲基苯丙胺/高温诱导的大鼠纹状体神经元坏死性凋亡中的作用。

DOI:
10.3389/fphar.2021.716394
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发表时间:
2021
影响因子:
5.6
通讯作者:
Xiong K
Xiong K
中科院分区:
医学2区
文献类型:
--
作者:
Liao LS;Lu S;Yan WT;Wang SC;Guo LM;Yang YD;Huang K;Hu XM;Zhang Q;Yan J;Xiong K

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甲基苯丙胺(冰毒)是世界上滥用最广泛的合成毒品之一。使用者通常表现为高热(HT)和精神症状。然而,涉及甲基苯丙胺/ ht诱导的神经毒性的机制仍然难以捉摸。在此,我们研究了热休克蛋白90α (HSP90α)在冰毒/高温(39.5°C)诱导的大鼠纹状体神经元坏死中的作用和在体大鼠模型。甲基苯丙胺可提高大鼠核心体温,上调纹状体LDH活性和典型坏死因子的分子表达。甲基安非他明和羟色胺可诱导原代培养纹状体神经元坏死。HSP90α表达在甲基安非他明/高温损伤后增加。HSP90α特异性抑制剂、格尔达霉素(GA)和HSP90α shRNA可减弱甲基安非他明/ ht诱导的受体相互作用蛋白3 (RIP3)、磷酸化RIP3、混合谱系激酶结构域样蛋白(MLKL)和磷酸化MLKL的上调。抑制HSP90α可保护原代培养的纹状体神经元免受甲基安非他明/高温诱导的坏死下垂。综上所述,HSP90α在甲基苯丙胺/ ht诱导的神经元坏死坏死中起重要作用,HSP90α- rip3通路是甲基苯丙胺/ ht诱导纹状体神经毒性的一个有希望的治疗靶点。
Methamphetamine (METH) is one of the most widely abused synthetic drugs in the world. The users generally present hyperthermia (HT) and psychiatric symptoms. However, the mechanisms involved in METH/HT-induced neurotoxicity remain elusive. Here, we investigated the role of heat shock protein 90 alpha (HSP90α) in METH/HT (39.5°C)-induced necroptosis in rat striatal neurons and an in vivo rat model. METH treatment increased core body temperature and up-regulated LDH activity and the molecular expression of canonical necroptotic factors in the striatum of rats. METH and HT can induce necroptosis in primary cultures of striatal neurons. The expression of HSP90α increased following METH/HT injuries. The specific inhibitor of HSP90α, geldanamycin (GA), and HSP90α shRNA attenuated the METH/HT-induced upregulation of receptor-interacting protein 3 (RIP3), phosphorylated RIP3, mixed lineage kinase domain-like protein (MLKL), and phosphorylated MLKL. The inhibition of HSP90α protected the primary cultures of striatal neurons from METH/HT-induced necroptosis. In conclusion, HSP90α plays an important role in METH/HT-induced neuronal necroptosis and the HSP90α-RIP3 pathway is a promising therapeutic target for METH/HT-induced neurotoxicity in the striatum.
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