A synthetic cell permeable antioxidant protects neurons against acute oxidative stress.

A synthetic cell permeable antioxidant protects neurons against acute oxidative stress.
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DOI:
10.1038/s41598-017-12072-5
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发表时间:
2017-09-19
期刊:
影响因子:
4.6
通讯作者:
Kunath T
Kunath T
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Drummond NJ;Davies NO;Lovett JE;Miller MR;Cook G;Becker T;Becker CG;McPhail DB;Kunath T

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过量的活性氧(ROS)会破坏蛋白质、脂质和DNA,从而导致细胞损伤和死亡。结果可以是急性的,如中风所见,也可以是慢性的,如帕金森病等与年龄有关的疾病。在这里,我们研究了一种新的合成类黄酮,Proxison(7-癸基-3-羟基-2-(3,4,5-三羟基苯基)-4-色烯酮)的抗氧化能力,使用一系列的体外和体内的方法。我们表明,虽然它具有与无细胞系统中的其他黄酮类化合物相当的自由基清除能力,但Proxison在保护神经细胞免受氧化应激方面比天然黄酮类化合物强几个数量级,并且能够拯救受损细胞。亲脂性烃尾部与修饰的多酚头部基团的独特组合促进了Proxison的有效细胞摄取和适度线粒体富集。重要的是,在多巴胺能神经变性的斑马鱼模型中,Proxison的体内给药证明了针对细胞损失的有效且耐受良好的神经保护作用。
Excessive reactive oxygen species (ROS) can damage proteins, lipids, and DNA, which result in cell damage and death. The outcomes can be acute, as seen in stroke, or more chronic as observed in age-related diseases such as Parkinson’s disease. Here we investigate the antioxidant ability of a novel synthetic flavonoid, Proxison (7-decyl-3-hydroxy-2-(3,4,5-trihydroxyphenyl)-4-chromenone), using a range of in vitro and in vivo approaches. We show that, while it has radical scavenging ability on par with other flavonoids in a cell-free system, Proxison is orders of magnitude more potent than natural flavonoids at protecting neural cells against oxidative stress and is capable of rescuing damaged cells. The unique combination of a lipophilic hydrocarbon tail with a modified polyphenolic head group promotes efficient cellular uptake and moderate mitochondrial enrichment of Proxison. Importantly, in vivo administration of Proxison demonstrated effective and well tolerated neuroprotection against cell loss in a zebrafish model of dopaminergic neurodegeneration.
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