项目名称: 基于PERK/elF2α通路研究针刺调控MCAO/R大鼠内质网应激-自噬稳态重构的分子机制
项目编号: No.81503669
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 医药、卫生
项目作者: 孙晓伟
作者单位: 黑龙江中医药大学
项目金额: 18万元
中文摘要: 基于课题组前期研究发现:针刺防治脑缺血再灌注损伤(CIRI)疗效肯定,可通过调控凋亡相关因子表达,保护受损神经细胞、促进神经功能修复。本研究进一步从内质网应激(ERS)-自噬稳态平衡角度,探讨针刺拮抗CIRI的可能机制。复制MCAO/R大鼠模型,应用电镜、免疫荧光组化、Western blot和Real-time PCR等技术,重点研究针刺对脑缺血再灌注(CIR)后自噬体、GRP78、自噬相关分子以及通路关键因子p-PERK、p-elF2α、ATF4、CHOP、Bcl2表达的影响;首次从PERK/elF2α信号通路的分子作用途径深入阐释CIR后神经细胞自噬的作用机制以及针刺减轻CIR后神经损伤的可能物质基础与有效作用靶点,进而验证“针刺刺激-正反馈或负反馈调控UPR-诱导神经细胞自噬适度激活-ERS与自噬稳态重构-神经细胞自体修复启动”的科学假说,为针刺治疗脑梗死提供全新科学依据。
中文关键词: 针刺;脑缺血再灌注损伤;内质网应激;自噬;未折叠蛋白反应
英文摘要: Our previous studies found that: acupuncture has definite effect on preventing and treating cerebral ischemia reperfusion injury (CIRI),through regulating the expression of related apoptotic factors,to protect the damaged nerve cells and promote neurological recovery. This study further explores the imbalance of homeostasis on endoplasmic reticulum stress (ERS)-autophagy,try to find the possible mechanisms of its CIRI's antagonism. Copy the MCAO/R rats model,apply electron microscopy,Real-time PCR,Western blot and immunofluorescence staining methods,focus on how to influence the expression of autophagy,GRP78,autophagy-related molecules and the key access factors p-PERK,p-elF2α,ATF4,CHOP,Bcl2 by acupuncture treatment after cerebral ischemia reperfusion(CIR). Further elaborate mechanism of autophagy of nerve cells after CIR and the possible material basis and potential valid targets of acupuncture treat CIRI. And then to verify the scientific hypothesis that acupuncture stimulating - feedback regulation of UPR - moderate activation of autophagy - ERS and autophagy homeostasis reconstruction- neuronal repair star. These are the key mechanisms for neuronal repair and remodeling by acupuncture treatment after CIRI.This study provides new scientific evidences and broadens the horizon for acupuncture in the treatment of cerebral infarction.
英文关键词: acupuncture;cerebral ischemia reperfusion injury;endoplasmic reticulum stress;autophagy;unfolded protein response