基于多酶类聚氧甲酸的单原子酶,用于通过酸触发的非毒性转化为毒性的癌症特异疗法
Xiyang Ge1, Yiyan Yin1, Xiaoni Wang1
1Country Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|April 21, 2024
概括
基于的多氧甲酸单原子酶 (Mn-POM SAEs) 通过在酸性瘤环境中激活,提供瘤特异性化学动力学疗法 (CDT). 这种方法通过产生反应性氧物种和破坏细胞过程来增强癌症治疗.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 材料科学 材料科学 材料科学
背景情况:
- 单原子酶 (SAzymes) 对化学动力学疗法 (CDT) 是有前途的,但在稳定性和副作用方面面临挑战.
- 聚氧甲 (POM) 材料正在探索治疗应用.
研究的目的:
- 开发一种针对瘤的CDT策略,使用一种基于的多氧甲单原子酶 (Mn-POM SAE).
- 调查TME激活的转变从无毒性到毒性,用于增强癌症治疗.
主要方法:
- 在中性pH值下聚合Mn-POM SAE纳米球,以确保安全交付.
- 在瘤微环境 (TME) 中,纳米圈的酸触发性降解.
- 评估释放的Mn{II}-PW11单位的多酶类活动 (POD,OXD,CAT,Gpx).
- 细胞内和体内实验来评估ROS生成和治疗疗效.
主要成果:
- Mn-POM SAE纳米球在正常组织中是稳定且无毒的,但在酸性TME中降解.
- 释放的Mn(II) -PW11单位表现出强大的多酶类活性.
- 酸性TME触发ROS生成,溶酶体膜损伤和自功能受损.
- 有效的瘤特异性疗法在体外和体内证明.
结论:
- Mn-POM SAE为更安全,更有效的CDT提供了一个TME激活的平台.
- 该研究强调了POMs在癌症治疗中的潜力,通过受控释放和多酶仿真.
- 这种方法通过利用瘤微环境为协同治疗癌症提供了一种新的策略.
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