Metal-organic frameworks (MOFs) have been used to improve vaccine formulations by stabilizing proteins and protecting them against thermal degradation. This has led to increased2immunogenicity of these proteinaceous therapeutics. In this work we show that MOFs can also be used to protect the ssDNA oligomer, CpG, to increase its immunoadjuvancy. By encapsulating phosphodiester CpG in the zinc-based MOF, ZIF-8, the DNA oligomer is protected from nuclease degradation and exhibits improved cellular uptake. As a result, we have been able to achieve drastically enhanced B-cell activation in splenocyte cultures comparable to the current state-of-the-art, phosphorothioate CpG. Furthermore, we have made a direct comparison of micro- and nano-sized MOF for the optimization of particulate delivery of immunoadjuvants to maximize immune activation. 6-bromo-7-methoxyquinoline Price Buy(2R,4R)-2-methyltetrahydro-2H-pyran-4-ol PMID:24957087
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