中国神经再生研究(英文版) ›› 2014, Vol. 9 ›› Issue (15): 1430-1433.doi: 10.4103/1673-5374.139458

• 观点:神经损伤修复保护与再生 • 上一篇    下一篇

脑卒中后DJ-1对氧化应激细胞死亡级联反应的作用

  

  • 收稿日期:2014-07-16 出版日期:2014-08-12 发布日期:2014-08-12

The role of DJ-1 in the oxidative stress cell death cascade after stroke

Paolina Pantcheva, Maya Elias, Kelsey Duncan, Cesar V. Borlongan, Naoki Tajiri, Yuji Kaneko   

  1. Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, FL, USA
  • Received:2014-07-16 Online:2014-08-12 Published:2014-08-12
  • Contact: Naoki Tajiri, Ph.D., Department of Neurosurgery and Brain Repair, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA, ntajiri@health.usf.edu.Yuji Kaneko, Ph.D., Department of Neurosurgery and Brain Repair, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA, ykaneko@health.usf.edu.

摘要:

尽管科学界对脑卒中的认识和治疗有着显著进步,但开发新型和有效的治疗方式以对抗这种疾病仍然是一个主要的临床问题。由脑卒中引起的神经组织损伤是因为血流到大脑的中断造成的,并导致葡萄糖,氧和其他营养成分的缺乏。这会导致梗塞核心快速坏死,并形成缺血半影。这种半影可在亚急性期接受干预治疗。在众多的神经变性途径中,氧化应激已被证明可加剧中枢神经系统中次级细胞死亡。DJ-1是一种多功能氧化还原敏感蛋白,与氧化应激的细胞死亡级联相关。DJ-1提供的神经保护形式可通过多种途径防止细胞死亡,最重要的是通过降低线粒体氧化应激和PD聚集蛋白α-突触核蛋白分子陪伴(作用),以及刺激抗凋亡和抗氧化基因的表达,促进促生存Akt通路从而阻止细胞凋亡信号调节激酶(ASK1)途径,并正调节雄激素受体依赖性转录。在细胞质和细胞核中常见的是,DJ-1可被分泌到病理状态下的血清中,还可以通过有丝分裂原刺激转位到各种哺乳动物细胞的线粒体中,特别令人感兴趣的是,氧化应激。来自美国南佛罗里达大学医学院Cesar V. Borlongan教授所在团队讨论了其最近发现的测试,DJ-1不仅可以作为氧化应激的细胞内保护的一种形式,也利用它从旁分泌和/或自分泌线索以完成相邻神经细胞之间的细胞外信号传导从而达到神经保护作用。

Abstract:

Oxidative stress is closely associated with secondary cell death in many disorders of the central nervous system including stroke, Parkinson’s disease, Alzheimer’s disease. Among many aberrant oxidative stress-associated proteins, DJ-1 has been associated with the oxidative stress cell death cascade primarily in Parkinson’s disease. Although principally expressed in the cytoplasm and nucleus, DJ-1 can be secreted into the serum under pathological condition. Recently, a close pathological association between DJ-1 and oxidative stress in stroke has been implicated. To this end, we and others have demonstrated the important role of mitochondria in neuroprotection for stroke by demonstrating that the translocation of DJ-1 in the mitochondria could potentially mitigate mitochondrial injury. Here, we discuss our recent findings testing the hypothesis that DJ-1 not only functions as a form of intracellular protection from oxidative stress, but that it also utilizes paracrine and/or autocrine cues in order to accomplish extracellular signaling between neighboring neuronal cells, resulting in neuroprotection. This article highlights recent evidence supporting the status of DJ-1 as key anti-oxidative stress therapeutic target for stroke.