一种Toll样受体4抑制剂制造技术

技术编号:13193888 阅读:87 留言:0更新日期:2016-05-11 20:20
本发明专利技术公开了一种Toll样受体4抑制剂,为羟基红花黄色素A。本发明专利技术利用系列亲和色谱法发现了羟基红花黄色素A在小鼠脑缺血脑组织中的特异性结合的蛋白。并通过质谱鉴定和蛋白免疫印迹技术鉴定该蛋白为TLR4。在此基础上采用大脑中动脉栓塞模型middle cerebral artery occlusion,MCAO模型实验,考察了羟基红花黄色素A的抑制脑缺血再灌注作用。实验结果表明,羟基红花黄色素A具有降低脑梗死体积、改善神经行为学评分、抑制炎症信号通路的作用。

【技术实现步骤摘要】

本专利技术涉及医药
,具体涉及羟基红花黄色素 A作为Toll样受体4抑制剂的 医药用途。
技术介绍
Toll样受体4(Toll like receptor 4,TLR4),脑卒中是严重威胁人类健康的重要 疾病(Feigin VL,Stroke epidemiology in the developing world,Lancet,2005;365: 2160-2161;Park TH,Redelmeier DA,Li S,et al.Academic Year-end Changeover and Stroke Outcomes?J Stroke Cerebrovasc Dis?2014;S1052-3057;Jauch EC?Saver JL? Adams HP Jr,et al. Guidelines for the early management of patients with acute ischemic stroke:a guideline for healthcare professionals from the American Heart Association/American Stroke Association . Stroke,2013;44:870-947; Marshall IJ,Wang Y,McKevitt C,et al. Trends in Risk Factor Prevalence and Management Before First Stroke:Data From the South London Stroke Register, Stroke,2013;44:1809-1816),WH0发布的全球成人死亡率中占据第二位。其中,缺血性脑卒 中约占脑卒中的85 %,缺血、缺氧导致的神经损伤短期恢复血液灌注后,可加重中枢神经系 统的损伤,导致患者出现截瘫、意识不清,行动不便等多发危险,称为脑缺血再灌注损伤 (Cerebral Ischemia/Reperfusion Injury,CIR)。脑缺血后再灌注可导致不可逆转的脑损 伤,其发病机制与固有免疫途径介导炎症反应密切相关(Inose Y,Kato Y,Kitagawa K,et al. Activated microglia in ischemic stroke penumbra upregulated MCP-1 and CCR-2 expression in response tolysophosphatidyIcholine derived from adjacent neuiOns and astrocytes ,Neuropathology,2015,35:209-223) D 固有免疫系统对损伤的响 应主要通过Toll样受体(Quiniou SM,Boudinot P,Bengt6n E,Comprehensive survey and genomic characterization of Toll-like receptors (TLRs) in channel catfish, Ictalurus punctatus:identification of novel fish TLRs,Immunogenetics,2013;65: 511-30),目前已确定有13个TLR家族受体为响应受体(Kawai T,Akira S. TLR signaling. Cell Death Differ,2006;13:816-25),其中Toll样受体4 (Toll like receptor 4,TLR4) 为研究最多的受体。TLR4是中枢神经小胶质细胞的主要响应受体(Johnson GB,Brunn GJ, Kodaira Y et al. Receptor-mediated monitoring of tissue well-being via detection of soluble heparan sulfate by Toll-like receptor 4.,J Immunol,2002; 168:5233-5239;Lehnardt S,Schott E,Trimbuch T,et al. A vicious cycle involving release of heat shock protein 60 from injured cells and activation of Tolllike receptor 4 mediates neurodegeneration in the CNS. J Neurosci,2008;28: 2320-233 I ; Kuang X ? Wang LF ? Yu L et a I·,LigustiIide ameliorates neuroinflammation and brain injury in focal cerebral ischemia/reperfusion rats:involvement of inhibition of TLR4/peroxiredoxin 6 signaling. Free Radic Biol Med,2014;71:165-715),其能介导免疫相关的信号转导分子和信号转导途径。活化的 小胶质细胞中,TLR4表达升高,可促进炎症活化和神经毒性产生神经损伤。脑缺血再灌注损 伤后(Ramos-Cejudo J?Gutierrez-Fernandez M?0ter〇-0rtega L et al. Brain-derived neurotrophic factor administration mediated oligodendrocyte differentiation and myelin formation in subcortical ischemic stroke. Stroke 2015;46:221-28), NF-κΒ可作为核转录因子参与控制免疫和炎症反应(Gao Y,Fang X,Tong Y et al. TLR4-mediated MyD88_dependent signaling pathway is activated by cerebral ischemia- reperfusion in cortex in mice,Biomed Pharmacother,2009;63:442-450),MAPK蛋白如 ERKl/2、p38、JNK的蛋白及其磷酸化均报道为TLR4途径下介导的信号通路(Hu H,Li Z,Zhu X et al. GuaLou GuiZhi decoction inhibits LPS-induced microglial cell motility through the MAPK signaling pathway?Int J Mol Med?2013;32:1281-1286)? 核转录后炎症因子TNF-a,IL_10和N0(Barton GM,Medzhitov R. Toll-like receptor si本文档来自技高网...

【技术保护点】
一种Toll样受体4抑制剂,其特征在于,为羟基红花黄色素A。

【技术特征摘要】

【专利技术属性】
技术研发人员:吕燕妮张洁付龙生欧阳爱军魏筱华温金华
申请(专利权)人:南昌大学第一附属医院
类型:发明
国别省市:江西;36

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