Hribljan Valentina, Lisjak Damir, Petrović Dražen Juraj, Mitrečić Dinko
Valentina Hribljan, Laboratory for Stem Cells, Department for Neurogenetics, Medical Genetics and Regenerative Neuroscience, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Šalata 12, HR-10000 Zagreb, Croatia,
Croat Med J. 2019 Apr 30;60(2):121-126. doi: 10.3325/cmj.2019.60.121.
Due to very limited therapeutic options, ischemic brain injury is one of the leading causes of death and lifelong disability worldwide, which imposes enormous public health burden. One of the main events occurring with ischemic brain stroke is cell death. Necroptosis is a type of cell death described as a regulated necrosis characterized by cell membrane disruption mediated by phosphorylated mixed lineage kinase like protein (MLKL). It can be triggered by activation of death receptors (eg, FAS, TNFR1), which lead to receptor-interacting serine/threonine-protein kinase 3 (RIPK3) activation by RIPK1 in the absence of active caspase-8. Here, we review articles that have reported that necroptosis significantly contributes to negative events occurring with the ischemic brain stroke, and that its inhibition is protective both in vitro and in vivo. We also review articles describing positive effects obtained by reducing necroptosis, including the reduction of infarct volume and improved functional recovery in animal models. Since necroptosis is characterized by cell content leakage and subsequent inflammation, in addition to reducing cell death, inhibition of necroptosis in ischemic brain stroke also reduces some inflammatory cytokines. By comparing various approaches in inhibition of necroptosis, we analyze the achieved effects from the perspective of controlling necroptosis as a part of future therapeutic interventions in brain ischemia.
由于治疗选择非常有限,缺血性脑损伤是全球范围内主要的死亡和终身残疾原因之一,给公共卫生带来了巨大负担。缺血性脑中风发生的主要事件之一是细胞死亡。坏死性凋亡是一种细胞死亡类型,被描述为一种程序性坏死,其特征是由磷酸化混合谱系激酶样蛋白(MLKL)介导的细胞膜破坏。它可由死亡受体(如FAS、TNFR1)的激活触发,在无活性半胱天冬酶-8的情况下,导致受体相互作用丝氨酸/苏氨酸蛋白激酶3(RIPK3)被RIPK1激活。在此,我们综述了一些文章,这些文章报道坏死性凋亡对缺血性脑中风发生的负面事件有显著影响,并且其抑制在体外和体内均具有保护作用。我们还综述了描述通过减少坏死性凋亡获得的积极效果的文章,包括在动物模型中梗死体积的减小和功能恢复的改善。由于坏死性凋亡的特征是细胞内容物泄漏及随后的炎症反应,除了减少细胞死亡外,抑制缺血性脑中风中的坏死性凋亡还可减少一些炎性细胞因子。通过比较抑制坏死性凋亡的各种方法,我们从将控制坏死性凋亡作为脑缺血未来治疗干预措施一部分的角度分析所取得的效果。