...
首页> 外文期刊>ACS Macro Letters >Peroxynitrite (ONOO-) Redox Signaling Molecule-Responsive Polymersomes
【24h】

Peroxynitrite (ONOO-) Redox Signaling Molecule-Responsive Polymersomes

机译:过氧亚硝酸盐(ONOO-)氧化还原信号分子响应聚合物小体

获取原文
获取原文并翻译 | 示例
           

摘要

Designing specific-responsive polymer nano capsules toward a definite cell signaling molecule for targeted therapy faces a great challenge. Here we demonstrate that new block copolymer appended trifluoromethyl ketone side groups can chemoselectively respond to an endogenous redox biosignal, peroxynitrite (ONOO-), but shield the interference of other biogenic reactive oxygen, nitrogen, and sulfur species (ROS/RNS/RSS). The ONOO- signaling molecule is capable of triggering cascade oxidation-elimination reactions to cleave the side functionalities from the polymer chain, which induces a large alteration of the polymer amphiphilicity and further leads to controllable disassembly of their self-assembled vesicular structure. Modulating the ONOO- stimulus concentrations could readily control the vesicle dissociation rates for desirable drug delivery. We envisage that this polymer model would provide a new scenario to construct bioresponsive macromolecular systems for future biomedical nanotechnologies.
机译:设计针对特定细胞信号分子的特异性反应聚合物纳米胶囊以进行靶向治疗面临巨大挑战。在这里,我们证明了附有三氟甲基酮侧基的新型嵌段共聚物可以对内源性氧化还原生物信号过氧亚硝酸盐(ONOO-)进行化学选择性反应,但能屏蔽其他生物活性氧,氮和硫物种(ROS / RNS / RSS)的干扰。 ONOO信号分子能够触发级联氧化消除反应,从聚合物链上裂解侧链官能团,从而诱导聚合物两亲性发生较大变化,并进一步导致可控的自组装囊泡结构拆卸。调节ONOO-刺激浓度可以很容易地控制囊泡解离速率,以实现理想的药物递送。我们设想该聚合物模型将为构建用于未来生物医学纳米技术的生物响应性大分子系统提供新的场景。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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