首页> 美国卫生研究院文献>International Journal of Molecular Sciences >Chemical Mechanisms of Nanoparticle Radiosensitization and Radioprotection: A Review of Structure-Function Relationships Influencing Reactive Oxygen Species
【2h】

Chemical Mechanisms of Nanoparticle Radiosensitization and Radioprotection: A Review of Structure-Function Relationships Influencing Reactive Oxygen Species

机译:纳米粒子放射增敏和放射防护的化学机理:影响活性氧物种的结构-功能关系的综述。

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Metal nanoparticles are of increasing interest with respect to radiosensitization. The physical mechanisms of dose enhancement from X-rays interacting with nanoparticles has been well described theoretically, however have been insufficient in adequately explaining radiobiological response. Further confounding experimental observations is examples of radioprotection. Consequently, other mechanisms have gained increasing attention, especially via enhanced production of reactive oxygen species (ROS) leading to chemical-based mechanisms. Despite the large number of variables differing between published studies, a consensus identifies ROS-related mechanisms as being of significant importance. Understanding the structure-function relationship in enhancing ROS generation will guide optimization of metal nanoparticle radiosensitisers with respect to maximizing oxidative damage to cancer cells. This review highlights the physico-chemical mechanisms involved in enhancing ROS, commonly used assays and experimental considerations, variables involved in enhancing ROS generation and damage to cells and identifies current gaps in the literature that deserve attention. ROS generation and the radiobiological effects are shown to be highly complex with respect to nanoparticle physico-chemical properties and their fate within cells. There are a number of potential biological targets impacted by enhancing, or scavenging, ROS which add significant complexity to directly linking specific nanoparticle properties to a macroscale radiobiological result.
机译:关于放射敏化,金属纳米颗粒越来越受到关注。理论上已经很好地描述了X射线与纳米粒子相互作用引起的剂量增加的物理机制,但是不足以充分说明放射生物学反应。进一步混淆实验观察的是放射防护的例子。因此,其他机制引起了越来越多的关注,尤其是通过提高活性氧(ROS)的产生,从而导致了基于化学的机制。尽管已发表的研究之间存在大量变量,但共识认为与ROS相关的机制非常重要。了解增强ROS生成的结构-功能关系将指导金属纳米粒子放射增敏剂的优化,以最大程度地提高对癌细胞的氧化损伤。这篇综述重点介绍了增强ROS的理化机制,常用的分析方法和实验考虑因素,与增强ROS产生和细胞损伤有关的变量,并指出了目前值得关注的空白。就纳米粒子的理化性质及其在细胞内的命运而言,活性氧的产生和放射生物学效应被证明是高度复杂的。有许多潜在的生物学目标受ROS的增强或清除的影响,这大大增加了将特定纳米粒子特性直接关联到宏观放射生物学结果的复杂性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号