一种类似酸酶的纳米材料促进了自和重编程巨细胞,用于癌症免疫治疗
Didar Baimanov1, Su Li2,3, Xuejiao J Gao4
1CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, Institute of High Energy Physics, Chinese Academy of Sciences and National Center for Nanoscience and Technology of China Beijing 100049 P. R. China wangliming@ihep.ac.cn.
Chemical science
|July 19, 2024
概括
研究人员开发了一种氧化 (LNO) 纳米酶,该纳米酶向巨细胞,诱导自细胞以增强癌症免疫疗法. 这种纳米酶有效地减少与瘤相关的巨细胞,并在体内表现出抗瘤作用.
科学领域:
- 生物医学工程 生物医学工程
- 癌症研究 癌症研究
- 免疫学 免疫学 免疫学
背景情况:
- 巨细胞对于组织稳态和癌症进展至关重要,影响从发病到转移的所有阶段.
- 目前针对能量剥夺和自的癌症疗法往往无法解决巨细胞,导致癌症免疫治疗的最佳结果.
- 瘤相关巨细胞 (TAMs) 经常表现出一种免疫抑制的M2类表型,阻碍有效的抗瘤免疫反应.
研究的目的:
- 开发一种针对巨细胞的新型纳米酶,用于增强癌症免疫治疗.
- 为了研究氧化 (LNO) 纳米酶对巨细胞极化和自的作用.
- 评估LNO纳米酶的体内抗瘤功效和免疫调节能力.
主要方法:
- 氧化 (LNO) 纳米酶的合成,具有类似酸酶的活性,用于ATP水解.
- 用LNO纳米酶对巨细胞进行治疗,以诱导自并评估极化变化 (M2到M1).
- 在携带瘤的小鼠体内研究,以评估TAMs和抗瘤效应的减少,包括与骨髓细胞膜涂层LNO.的实验.
主要成果:
- 在LNO纳米酶有效地解ATP,诱导巨细胞的自.
- LNO治疗促进了M2型巨细胞向M1型巨细胞的两极分化,减少了瘤携带小鼠中的TAMs.
- 骨髓细胞膜涂层的LNO显著增强了抗瘤免疫力和体内治疗疗效.
结论:
- 类似酸酶的纳米酶LNO特别诱导巨细胞的自,将TAM重新编程为抗瘤表型.
- LNO纳米酶在体内表现出显著的抗瘤作用,并通过调节巨细胞极化来增强癌症免疫疗法.
- 用髓状细胞膜进行表面修饰进一步提高了纳米酶的免疫治疗潜力,为癌症治疗提供了一个有希望的策略.
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