Preparation quality and epitranscriptomic modification influence circular RNA vaccine performance
Researchers separated the effects of circular structure, preparation quality, and nucleotide modification across two vaccine antigen systems. Cleaner circular RNA preparations caused less innate immune activation, but antibody and T-cell response levels were comparable with linear mRNA. Incorporating m6A was associated with higher antibody avidity, rather than a general increase in expression.
DOI: 10.1038/s41541-026-01581-y