Incorporation of Phosphonate into Benzonaphthyridine Toll-like Receptor 7 Agonists for Adsorption to Aluminum Hydroxide
作者:Alex Cortez、Yongkai Li、Andrew T. Miller、Xiaoyue Zhang、Kathy Yue、Jillian Maginnis、Janice Hampton、De Shon Hall、Michael Shapiro、Bishnu Nayak、Ugo D’Oro、Chun Li、David Skibinski、M. Lamine Mbow、Manmohan Singh、Derek T. O’Hagan、Michael P. Cooke、Nicholas M. Valiante、Tom Y.-H. Wu
DOI:10.1021/acs.jmedchem.6b00489
日期:2016.6.23
Toll-like receptor 7 (TLR7) agonists have been used as vaccine adjuvants by enhancing innate immune activation to afford better adaptive response. Localized TLR7 agonists without systemic exposure can afford good adjuvanticity, suggesting peripheral innate activation (non-antigen-specific) is not required for immune priming. To enhance colocalization of antigen and adjuvant, benzonaphthyridine (BZN) TLR7
小分子Toll样受体7(TLR7)激动剂已通过增强先天免疫激活作用以提供更好的适应性反应而用作疫苗佐剂。没有全身暴露的局部TLR7激动剂可以提供良好的佐剂性,表明免疫引发不需要外围先天性激活(非抗原特异性)。为了增强抗原和佐剂的共定位作用,苯甲萘啶(BZN)TLR7激动剂经过膦酸酯化学修饰,可以吸附到氢氧化铝(alum)上,氢氧化铝是一种常用于疫苗中的抗原稳定和注射部位沉积配方。通过增强BZN类似物的水溶性来避免两种不溶性颗粒的物理混合,从而促进了吸附过程。这些BZN-膦酸酯高度吸附在明矾上,大大减少了全身暴露,并增加了注射后的局部滞留。该报告证明了使用膦酸酯修饰的疫苗佐剂设计中的一种新方法,该方法可将小分子免疫增强剂(SMIP)吸附到明矾上,从而增强与抗原的共传递。