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免疫调节纳米粒子用于调节关节炎爆发
Wade T Johnson1, David McBride1, Matthew Kerr1
1Department of NanoEngineering and Chemical Engineering Program, University of California, San Diego, La Jolla, California 92093, United States.
ACS nano
|November 28, 2023
概括
新的纳米颗粒载有酸 (CLNP) 有效调节了自身免疫关节疾病中的炎症爆发. 这些CLNP降低了疾病的严重程度,并保护了关节,而不会导致普遍的免疫抑制.
科学领域:
- 免疫学 免疫学 免疫学
- 纳米技术纳米技术
- 类风湿病学 类风湿病学
背景情况:
- 像类风湿性关节炎这样的自身免疫性关节疾病的治疗方法得到了改进,但炎症性发作仍然存在.
- 目前的疾病修饰药物不能完全预防炎症爆发,需要新的治疗策略.
研究的目的:
- 开发和评估与关节特异性抗原结合并装载酸 (CLNP) 的聚乳糖酸) - - 聚乙烯糖醇 - - 马利胺 (PLGA-PEG-MAL) 纳米颗粒,用于调节自身免疫性关节疾病爆发.
- 在自身免疫性关节炎的临床前模型中研究CLNP在体外和体内免疫调节作用.
主要方法:
- 合成了PLGA-PEG-MAL纳米颗粒,与aggrecan70-84和II型牛256-270结合,并加载了.
- 在体外研究中评估了CLNP对树突细胞 (DC) 表型,共刺激分子表达和细胞因子生产的作用,使用大量RNA测序.
- 活体疗效在原诱导性关节炎和SKG小鼠模型中进行了评估,通过微计算机断层扫描和组织形态测量评估临床得分,骨质侵蚀和软骨保存.
主要成果:
- CLNP 显示出~200 nm 的水力动力直径,具有较低的多分散性.
- 在体外,CLNP调节了DC表型,减少了促炎性标记物,并增强了CTLA-4表达.
- 在体内,CLNP在淋巴结中积累,并显著降低了关节炎模型中的临床得分,骨质侵蚀和软骨损伤,与透关节的免疫细胞中CTLA-4的增加有关.
结论:
- 在临床前模型中,加醇载荷纳米粒子 (CLNP) 有效地减轻自身免疫性关节疾病的爆发.
- 通过调节免疫细胞反应,特别是增强CTLA-4表达,而不会引起广泛的免疫抑制,CLNP发挥治疗作用.
- 这些发现支持CLNP作为一种新的治疗方法来管理自身免疫关节病的炎症性发作的潜力.
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