Tumor necrosis factor-like weak inducer of apoptosis and fibroblast growth factor-inducible 14 mediate cerebral ischemia-induced poly(ADP-ribose) polymerase-1 activation and neuronal death.

Tumor necrosis factor-like weak inducer of apoptosis and fibroblast growth factor-inducible 14 mediate cerebral ischemia-induced poly(ADP-ribose) polymerase-1 activation and neuronal death.
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肿瘤坏死因子样弱凋亡诱导剂和成纤维细胞生长因子诱导型 14 介导脑缺血诱导的聚(ADP-核糖)聚合酶-1 激活和神经元死亡。

DOI:
10.1016/j.neuroscience.2010.10.029
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发表时间:
2010-12-29
期刊:
影响因子:
3.3
通讯作者:
Yepes, M.
Yepes, M.
中科院分区:
医学3区
文献类型:
--
作者:
Haile, W. B.;Echeverry, R.;Wu, F.;Guzman, J.;An, J.;Wu, J.;Yepes, M.

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肿瘤坏死因子样弱凋亡诱导因子(TWEAK)及其受体成纤维细胞生长因子诱导因子14(Fn 14)在神经元中表达。在这里,我们证明了TWEAK诱导神经元死亡的剂量依赖性增加,并且这种作用不依赖于TNF-α,而是由NF-κB通路激活介导的。与TWEAK一起孵育会诱导野生型(Wt)神经元的细胞凋亡,但不会诱导Fn 14缺陷(Fn 14-/-)神经元的细胞凋亡。脑内注射TWEAK可诱导Wt中聚(ADP-核糖)聚合物(PAR)的积累,但在Fn 14 −/−小鼠中则不然。暴露于氧-葡萄糖剥夺(OGD)条件下增加Wt神经元中TWEAK和Fn 14 mRNA的表达,并降低Wt神经元中的细胞存活率,但不影响Fn 14 −/−或TWEAK缺陷(TWEAK−/−)神经元。实验性大脑中动脉闭塞(MCAO)增加了Wt小鼠缺血区TWEAK和Fn 14 mRNA和活性caspase-3的表达,以及聚(ADP-核糖)聚合酶-1的裂解和PAR蓄积,但Fn 14 −/−小鼠没有。总之,这些结果表明了一种模型,其中响应于缺氧/缺血,神经元中TWEAK和Fn 14之间的相互作用诱导PARP-1活化,PAR聚合物蓄积,并通过NF-κB途径活化导致细胞死亡。这是缺氧/缺血诱导的TWEAK介导的细胞死亡的新途径,也是缺血性卒中的潜在治疗靶点。
Tumor necrosis factor-like weak inducer of apoptosis (TWEAK) and its receptor Fibroblast growth factor-inducible 14 (Fn14) are expressed in neurons. Here we demonstrate that TWEAK induces a dose-dependent increase in neuronal death and that this effect is independent of TNF-α and mediated by NF-κB pathway activation. Incubation with TWEAK induces apoptotic cell death in wild-type (Wt) but not in Fn14 deficient (Fn14−/−) neurons. Intracerebral injection of TWEAK induces accumulation of poly(ADP-ribose) polymers (PAR) in Wt but not in Fn14−/− mice. Exposure to oxygen-glucose deprivation (OGD) conditions increases TWEAK and Fn14 mRNA expression in Wt neurons, and decreases cell survival in Wt but not in Fn14−/− or TWEAK deficient (TWEAK−/−) neurons. Experimental middle cerebral artery occlusion (MCAO) increases the expression of TWEAK and Fn14 mRNA and active caspase-3, and the cleavage of poly(ADP-ribose)polymerase-1 with accumulation of PAR in the ischemic area in Wt but not Fn14−/− mice. Together, these results suggest a model where in response to hypoxia/ischemia the interaction between TWEAK and Fn14 in neurons induces PARP-1 activation with accumulation of PAR polymers and cell death via NF-κB pathway activation. This is a novel pathway for hypoxia/ischemia-induced TWEAK-mediated cell death and a potential therapeutic target for ischemic stroke.
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发表时间: 1999-05-01
期刊: NATURE MEDICINE
影响因子: 82.9
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