以为中心的乳酸氧化酶纳米酶用于瘤乳酸调节和微环境重塑
Senfeng Zhao1,2, Huihuang Li3, Renyu Liu4
1Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
Journal of the American Chemical Society
|April 25, 2023
概括
研究人员设计了-纳米复合物 (Co4N/C) 以模仿乳酸氧化酶,通过逆转瘤免疫抑制和抑制瘤生长和转移来增强抗癌效果.
科学领域:
- 生物催化和纳米技术
- 生物模拟催化剂设计
- 癌症治疗
背景情况:
- 设计纳米酶来复制自然的酶功能是一个重大的挑战.
- 目前的策略集中在金属中心和非金属配体上,它们不适合像乳酸氧化酶这样的黄酶.
- 黄素酶利用黄素单核酸 (FMN) 依赖的途径,需要替代的设计方法.
研究的目的:
- 开发一种模仿乳酸氧化酶活性的新协调策略.
- 通过调节中心附近的协调来设计纳米酶的电子特性.
- 通过向瘤微环境, 创建具有增强抗癌功能的纳米酶.
主要方法:
- 使用协调策略制造-纳米复合材料 (Co4N/C).
- 在 (N) 中心附近调节 (Co) 协调数以设计电子属性.
- 对纳米酶对乳酸氧化的催化活性进行评估.
- 在瘤微环境模型中评估纳米酶的抗癌功效.
主要成果:
- 设计的Co4N/C纳米酶显示出精确的乳酸识别点和优化的中间吸收能量.
- 达到了乳酸α-C-sp(3) -H与的优异氧化.
- 该纳米酶有效地逆转了高乳酸水平和免疫抑制瘤微环境.
- 观察到明显的瘤生长抑制和远程转移.
结论:
- 开发的Co4N/C纳米酶通过一种新的协调策略成功模仿乳酸氧化酶活性.
- 在位的工程电子特性提高了催化效率和抗癌治疗效果.
- 这种方法为化学和生物催化技术提供了一个新的途径,为先进的癌症疗法提供了潜力.
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