A based Cistanche deserticola polysaccharide functional-nanoparticle delivery system for effective oral vaccine to facilitate both systemic and mucosal immunity through enhancing oral delivery

polysaccharide (CDP) functional-dendritic fibrous nano-silica (DFNS) nanoparticles (CDP-DFNS) were prepared. Encouragingly, the CDP-DFNS with prominent physicochemical and structural characteristics showed high cellular uptake and lead to a high transmembrane transport and intestinal epithelium permeability of antigen. Furthermore, CDP-DFNS significantly induced the antigen internalization and activation of dendritic cells after transport across epithelial cells. In addition, the in vivo experiment results reveled that CDP-DFNS was efficiently facilitated both antigen-specific systemic and mucosal immunity. In conclusion, CDP-DFNS represents a promising candidate for oral vaccine delivery, offering a unique combination of carrier and adjuvant properties. However, further research is needed to evaluate its efficacy in larger animal models and human clinical trials to confirm its translational potential, and fully establish its potential as a next-generation oral vaccine platform.