Hydrophilic carbon clusters as therapeutic, high-capacity antioxidants.

Hydrophilic carbon clusters as therapeutic, high-capacity antioxidants.
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DOI:
10.1016/j.tibtech.2014.08.005
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发表时间:
2014-10
影响因子:
17.3
通讯作者:
Kent, Thomas A.
Kent, Thomas A.
中科院分区:
工程技术1区
文献类型:
--
作者:
Samuel, Errol L. G.;Duong, MyLinh T.;Bitner, Brittany R.;Marcano, Daniela C.;Tour, James M.;Kent, Thomas A.

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氧化应激反映了活性氧物种(ROS)的过度积累,是几种急性和慢性人类病理的标志。虽然已经对许多抗氧化剂进行了研究,但大多数在临床试验中显示效果不佳。在这里,我们讨论了目前抗氧剂的局限性,并描述了一类新的纳米抗氧剂-聚乙二醇官能化亲水碳簇(PEGHC)。聚乙二醇羟基磷灰石具有很强的清除超氧阴离子自由基和羟基自由基等ROS的能力,对一氧化氮没有反应能力,并且可以在不损失活性的情况下通过靶向部分实现功能化。鉴于这些特性,我们认为,聚乙二醇-羟基磷灰石提供了一个令人兴奋的新的研究领域,以治疗许多ROS诱导的人类病理。
Oxidative stress reflects an excessive accumulation of reactive oxygen species (ROS) and is a hallmark of several acute and chronic human pathologies. While many antioxidants have been investigated, the majority have demonstrated poor efficacy in clinical trials. Here, we discuss limitations of current antioxidants and describe a new class of nanoparticle antioxidants, poly(ethylene glycol)-functionalized hydrophilic carbon clusters (PEG-HCCs). PEG-HCCs show high capacity to annihilate ROS such as superoxide and hydroxyl radicals, show no reactivity toward nitric oxide, and can be functionalized with targeting moieties without loss of activity. Given these properties, we propose that PEG-HCCs offer an exciting new area of study for treatment of numerous ROS-induced human pathologies.
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发表时间: 1991-11-22
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