Targeting of XJB-5-131 to mitochondria suppresses oxidative DNA damage and motor decline in a mouse model of Huntington's disease.

Targeting of XJB-5-131 to mitochondria suppresses oxidative DNA damage and motor decline in a mouse model of Huntington's disease.
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DOI:
10.1016/j.celrep.2012.10.001
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发表时间:
2012-11-29
期刊:
影响因子:
8.8
通讯作者:
McMurray CT
McMurray CT
中科院分区:
生物学1区
文献类型:
--
作者:
Xun Z;Rivera-Sánchez S;Ayala-Peña S;Lim J;Budworth H;Skoda EM;Robbins PD;Niedernhofer LJ;Wipf P;McMurray CT

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氧化损伤和线粒体功能障碍与衰老和与年龄相关的神经退行性疾病有关,包括亨廷顿病(HD)。许多天然存在的抗氧化剂已被测试用于纠正活性氧的有害影响,但它们往往缺乏特异性,是组织可变的,并且在人体临床试验中功效甚微。为了提高特异性和有效性,我们设计了一种合成抗氧化剂XJB-5-131,用于靶向线粒体。我们在小鼠HD模型中证明XJB-5-131具有显著的有益作用。XJB-5-131减少线粒体DNA的氧化损伤,维持线粒体DNA拷贝数,抑制运动衰退和体重减轻,提高神经元存活率,改善线粒体功能。这些发现表明XJB-5-131是一种很有前景的治疗化合物。
Oxidative damage and mitochondrial dysfunction are implicated in aging and age-related neurodegenerative diseases, including Huntington’s disease (HD). Many naturally occurring antioxidants have been tested to correct for deleterious effects of reactive oxygen species, but often they lack specificity, are tissue variable, and the efficacy is marginal in human clinical trials. To increase specificity and efficacy, we have designed a synthetic antioxidant, XJB-5-131, to target mitochondria. We demonstrate in a mouse model of HD that XJB-5-131 has remarkably beneficial effects. XJB-5-131 reduces oxidative damage to mitochondrial DNA, maintains mitochondrial DNA copy number, suppresses motor decline and weight loss, enhances neuronal survival, and improves mitochondrial function. The findings poise XJB-5-131 as a promising therapeutic compound.
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