尺寸问题:通过调整颗粒的大小来改变抗原特异性免疫耐受性
Baisong Li1, Lin Ma2, Xiwen Li3
1Kunshan Hospital of Traditional Chinese Medicine, Kunshan, Jiangsu 215300, People's Republic of China; College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, People's Republic of China; Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Soochow University, Suzhou 215123, China.
提供抗原和免疫抑制剂的纳米/微载体可以治疗自身免疫性疾病. 颗粒大小和表面电荷对免疫耐受性诱导有重大影响,纳米颗粒和微粒的组合显示出最佳的治疗效果.
科学领域:
- 免疫学 免疫学 免疫学
- 纳米技术纳米技术
- 材料科学 材料科学 材料科学
背景情况:
- 通过纳米/微载体的抗原特异性免疫耐受性是对自身免疫性疾病的有前途的策略.
- 载体的物理化学特性,特别是粒子大小和表面电荷,显著影响免疫反应.
- 有限的研究存在于微米级载体的抗原传递.
研究的目的:
- 研究纳米粒子 (NP) 和微粒子 (MP) 的粒子大小和表面电荷对诱导抗原特异性免疫耐受性的影响.
- 评估使用各种NP/MP配方同时提供抗原和免疫抑制剂的疗效.
- 探索结合NP和MP的协同效应,以提高治疗结果.
主要方法:
- 使用PVA和PEMA乳化剂制备200nm至5μm尺寸的NP/MP,以控制表面电荷.
- 在准备的载体中封装抗原 (MOG35-55) 和免疫抑制剂.
- 在体外和体外评估以评估诱导抗原特异性免疫耐受性和治疗疗效.
主要成果:
- 负电荷粒子 (PEMA) 诱导的免疫耐受性比正电荷粒子 (PVA) 更快.
- 与PVA载体观察到较慢,持续的耐受性,而PEMA载体提供更快的诱导.
- 通过200nm的NP-PVA和3μm的MP-PEMA实现了最佳的免疫耐受性.
- 结合NP和MP,特别是200nmNP-PVA与3μmMP-PEMA的组合,证明了卓越的治疗疗效.
结论:
- 粒子大小和表面电荷是基于纳米/微载体的免疫耐受性诱导疗效的关键决定因素.
- 结合纳米粒子和微粒子提供了一种协同方法,以提高自身免疫性疾病治疗的治疗结果.
- 乳化剂的选择显著影响免疫耐受性的动力学和可持续性,为治疗开发提供了一个可调节的平台.
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