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相关概念视频

Cofactors and Coenzymes01:27

Cofactors and Coenzymes

Enzymes require additional components for proper function. There are two such classes of molecules: cofactors and coenzymes. Cofactors are metallic ions and coenzymes are non-protein organic molecules. Both of these types of helper molecule can be tightly bound to the enzyme or bound only when the substrate binds.

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Updated: May 7, 2026

Generation of Scalable, Metallic High-Aspect Ratio Nanocomposites in a Biological Liquid Medium
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通过代谢重编程通过增强的质死,使用配送铜的C-N-C单原子纳米酶.

Kang Kim1,2, Jaewoo Lee1,2, Ok Kyu Park1,3

  • 1Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.

ACS nano
|June 11, 2025
PubMed
概括
此摘要是机器生成的。

这项研究开发了一种使用纳米酶的新型铜输送系统,以增强癌细胞死亡 (亡),即使是在缺乏氧气的瘤中. 该策略重新编程癌症代谢,以改善治疗结果.

关键词:
具有类似催化酶的活性.这就是cuproptosis.减轻低氧的缓解作用离子输送 离子输送 离子输送代谢重编程是指代谢重编程.一个原子的纳米酶.

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科学领域:

  • 生物医学工程 生物医学工程
  • 纳米技术 纳米技术
  • 癌症生物学 癌症生物学

背景情况:

  • 铜,一种依赖铜的细胞死亡,是一种有前途的癌症疗法,但受到瘤缺氧的限制.
  • 缺氧瘤表现出 mitochondrial 活动的减少,阻碍 cuproptosis 诱导剂的有效性.

研究的目的:

  • 开发一种具有增强的催化酶类活性的新型铜输送载体,以克服缺氧诱导的抗性.
  • 重新编程癌细胞代谢以改善治疗结果.

主要方法:

  • 构建富含氧的单原子纳米酶,加载铜 (Cu@CoNC(O)).
  • 评估Cu@CoNC(O) 的铜离子负载效率,类似触酶的活性和缺氧缓解.
  • 对代谢重编程的评估,包括乳酸代谢的抑制和酸盐脱酶复合物的激活.
  • 研究代谢转移和铜输送对低氧条件下质诱导的协同效应.

主要成果:

  • 与缺氧对应物相比,Cu@CoNC(O) 显示出更高的铜加载效率.
  • 该纳米酶有效地缓解了瘤缺氧,并将癌细胞代谢从糖解转移到线粒体呼吸.
  • 代谢重编程和铜输送的协同效应显著促进了cuproptosis,即使在低氧条件下.
  • 在缺氧瘤中观察到增强的治疗效果.

结论:

  • 单原子纳米酶可以作为有效的催化离子输送载体.
  • 代谢调节与向离子输送相结合,提供了一种强有力的策略,以增强cuproptosis治疗.
  • 这种方法显示出在挑战低氧瘤微环境时提高癌症治疗疗效的巨大潜力.