组装复合纳米聚胺含布尔萨衍生BP7 (CNPB7) 的免疫调节功能,促进禽类免疫接种中的粘膜免疫反应
Xinyu Guo1,2, Jianing Hu1,2, Guihu Yin1,2
1Key Laboratory of Animal Microbiology of China's Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.
Vaccines
|August 29, 2024
概括
一种新型的复合纳米聚酸辅助剂 (CNPB7) 有效地提高了的粘膜免疫力. 这种辅助剂增强了对纽卡斯尔病和禽传染性支气管炎的免疫反应,提高了疫苗的疗效,并提供了预防禽病的新策略.
科学领域:
- 兽医免疫学 兽医免疫学
- 纳米技术在动物健康中的应用
- 禽类疾病研究研究
背景情况:
- 粘膜免疫对于保护家禽免受像纽卡斯尔病病毒 (NDV) 和禽传染性支气管炎病毒 (IBV) 这样的呼吸道病原体至关重要.
- 目前的活疫苗往往无法引起足够强大的粘膜免疫反应,需要开发有效的辅助剂.
- 增强粘膜免疫力是改善对常见的鸟类呼吸道疾病的保护的关键.
研究的目的:
- 开发和评估一种新型复合纳米聚类辅助剂 (CNPB7),用于增强家禽的粘膜免疫力.
- 评估辅助剂提高对NDV和IBV双重疫苗的免疫反应的能力.
- 为新的辅助剂开发和禽病预防战略提供基础.
主要方法:
- 复合纳米聚类辅助剂 (CNPB7) 是通过超声波分散合成的,使用bursal衍生的BP7,β-glucan和酸.
- 对CNPB7纳米粒子的粒子大小和多分散度指数 (PDI) 进行了优化和特征化.
- 接种了单独的CNPB7,以评估非特异性免疫反应,以及与NDV-IBV疫苗结合的CNPB7,以评估特定的粘膜和全身免疫力.
主要成果:
- 优化CNPB7纳米颗粒的平均颗粒大小为514.9nm,PDI为0.298.
- 非特异性免疫反应评估显示,在CNPB7免疫接种后,脏淋巴细胞中CD3,CD4,CD80和CD86的表达增强.
- 用CNPB7和NDV-IBV疫苗进行口服免疫,在呼吸和消化粘液中显著增加了免疫球蛋白SIgA,IL-4,IFN-γ和IL-13水平,同时增加了针对NDV和IBV的特定抗体的产生.
结论:
- 开发的纳米粒子CNPB7有效地刺激的非特异性和特异性免疫反应.
- CNPB7通过促进粘膜免疫和抗体产生,显著提高了NDV-IBV双重疫苗的疗效.
- 这种新型辅助剂为改善疫苗接种策略和预防禽群病毒传播提供了有希望的方法.
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