It is the first time that mRNA-LNPs have been used to express anti-HBsAg antibodies (G12-scFv, G12-scFv-Fc, and G12-IgG). G12-scFv-Fc- and G12-IgG-encoding mRNA-LNPs exerted a sustained effect on HBsAg serum clearance in the adeno-associated virus (AAV)/HBV mouse model with persistent HBsAg expression. These findings may provide a new design of combination therapy for functional cure of HBV. For example, this strategy could provide an alternative for antibodies in "sandwich" therapy and further enhance the immunization properties of the therapy. Overall, mRNA therapeutics are promising for treatment of infectious diseases because of their rapid development, economic value, and simplicity.
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Chen et al. (2022) studied this question.
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