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Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
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提高PARP抑制剂的有效性,使用纳米颗粒进行降解反应,封装NADP.

Hao Chen1, Fan Tan1, Yukui Zhang1,2

  • 1Key Laboratory of Molecular Medicine and Biological Diagnosis and Treatment (Ministry of Industry and Information Technology), School of Life Science, Beijing Institute of Technology, Beijing 100081, China. xiebingteng@bit.edu.cn.

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科学领域:

  • 生物化学 生物化学
  • 纳米技术纳米技术
  • 在瘤学瘤学.

背景情况:

  • 聚基聚合酶抑制剂 (PARPi) 是有效的癌症治疗方法,但耐药性限制了它们的使用.
  • NADP+抑制ADP-ribosylation,可以使癌细胞对PARPi敏感,但其较差的细胞膜透性是一个挑战.

研究的目的:

  • 为NADP+开发一个纳米粒子传递系统,以克服其透性问题.
  • 为了研究NADP+载荷纳米粒子和olaparib对瘤细胞生长的协同作用.

主要方法:

  • 为细胞内NADP+释放而设计的具有二硫化键的降解响应纳米粒子 (NP).
  • 在这些NP中封装NADP+和olaparib.
  • 评估了NP吸收,细胞内NADP+水平以及对DNA损伤修复和瘤细胞增殖的影响.

主要成果:

  • NP成功地将NADP+输入瘤细胞,增加细胞内度.
  • 升高的NADP+抑制了DNA损伤诱导的PARylation和受损的DNA修复.
  • 结合NADP+和olaparib治疗协同抑制了瘤细胞的生长.

结论:

  • 减少响应纳米颗粒提供了一种可行的策略,用于向癌细胞输送NADP+.
  • 这种基于NADP+的纳米粒子系统与olapararib结合,显示了癌症治疗的巨大潜力.