针对免疫辅助剂外源性施用益生菌衍生细胞外囊的组织分布和宿主免疫刺激活性的阐明
Masaki Morishita1, Masakatsu Kida1, Tomomi Motomura1
1Department of Biopharmaceutics, Kyoto Pharmaceutical University, Misasagi, Yamashina-Ku, Kyoto 607-8414, Japan.
Molecular pharmaceutics
|November 6, 2023
概括
管理后研究了益生菌细胞外囊泡 (EVs) 的生物分布. 皮下使用Bifidobacterium longum EVs有效地激活了免疫反应,表明了新型免疫疗法的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
背景情况:
- 细胞外囊泡 (EVs) 是具有治疗潜力的纳米粒子生物材料.
- 了解给药EVs的体内命运和免疫反应至关重要.
- 益生菌衍生的EVs的生物分布和免疫调节作用需要进一步阐明.
研究的目的:
- 描述益生菌衍生的EVs (B-EVs和L-EVs) 的组织分布和免疫激活能力.
- 为了比较小鼠的静脉和皮下注射途径.
- 评估益生菌EVs在免疫治疗中的潜力.
主要方法:
- B-EV和L-EV的特征 (尺寸,泽塔潜力,货物).
- 在小鼠中静脉和皮下注射EVs.
- 使用组织积累和巨细胞吸收研究进行生物分布分析.
- 通过细胞因子和共刺激分子表达的免疫激活的评估.
主要成果:
- B-EV和L-EV (100-160纳米,负泽塔潜力) 含有糖,DNA和RNA.
- 静脉注射EVs主要积聚在肝脏和脏中,由巨细胞吸收.
- 皮下注射的EVs局部化到淋巴结,特别是在B淋巴细胞区域.
- 与L-EV相比,皮下B-EV给药显著增加了TNF-α,CD40和CD80的表达.
结论:
- 来自益生菌的EV表现出类似的生物分布,无论分泌益生菌菌株.
- 静脉注射EV显示免疫激活最小.
- 皮下注射B-EV显示出强大的免疫激活能力,这表明免疫治疗的发展有前途.
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