BCG细胞壁骨架通过促进树突细胞激活来增强登革热纳米粒子疫苗的免疫性
Jitra Limthongkul1, Saradee Warit2, Panya Sunintaboon3
1Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, Thailand.
PloS one
|November 20, 2025
概括
细菌Calmette-Guérin细胞壁骨架 (BCG-CWS) 作为一种强大的辅助剂,显著增强树突细胞 (DC) 对登革热疫苗的反应. 这导致更强的适应性免疫力和皮肤细胞中DENV2的潜在抑制.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 登革热病毒研究研究
背景情况:
- 众所周知,Bacillus Calmette-Guérin细胞壁骨架 (BCG-CWS) 可以提高疫苗的有效性和抗瘤免疫力.
- 之前的研究表明,BCG-CWS在与封闭的DENV抗原联合使用时,可以协同诱导登革热病毒 (DENV) 特定的适应性免疫反应.
- 树突细胞 (DCs) 对于调解先天性和适应性免疫是至关重要的.
研究的目的:
- 为了研究原单细胞衍生的树突细胞 (DCs) 对BCG-CWS辅助的封闭性登革热免疫原体的反应.
- 为了将DC反应与辅助剂和疫苗组合引起的体内免疫反应相关联.
- 了解BCG-CWS在登革热疫苗接种中作为辅助剂的机制.
主要方法:
- 通过BCG-CWS辅助的封闭式登革热免疫原体或未辅助的疫苗来刺激主要单细胞衍生的DCs.
- 分析了DC激活标记物 (CD80,CD83,CD86,HLA-DR) 和先天免疫细胞因子的表达水平.
- 测量了与DC功能相关的特定微RNA (miRNA) 的表达水平 (miR-146a,miR-147,miR-223,miR-155).
主要成果:
- 与BCG-CWS辅助的登革热纳米粒子疫苗相比,与未辅助的疫苗相比,诱导了更好的DC反应.
- 这种增强的直流反应与小鼠体内更强的免疫反应相关.
- 随着BCG-CWS辅助,观察到DC激活标记物,先天性免疫细胞因子和特定的miRNAs的表达升高.
- BCG-CWS增强了抗原处理活性,并在DC中激活了先天性免疫细胞因子和免疫相关的miRNA.
结论:
- 通过增强DC激活和功能,BCG-CWS作为登革热纳米粒子疫苗的有效辅助剂.
- BCG-CWS的辅助作用通过DC激活标记物,先天性细胞因子和特定的miRNAs的上调调节.
- 这些BCG-CWS的免疫调节可能有助于抑制旁观者皮肤细胞中的DENV2繁殖,这表明更广泛的保护机制.
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