messenger RNA therapeutic payload (none)

The **mRNA payload** in biomedicine refers to a *synthetic, sequence-optimized messenger RNA molecule* that is encapsulated (most commonly in lipid nanoparticles) for delivery into target cells, where it is translated by the host cell machinery to produce a therapeutic protein of interest. Applications include vaccines (e.g., COVID-19 mRNA vaccines), protein replacement therapies, cancer immunotherapies, and engineered cell therapies. The mRNA payload is not itself a drug target, but the active component of a drug formulation, designed for rapid and transient protein expression. The drug’s activity depends entirely on the encoded protein and the efficiency of cellular uptake and translation of the mRNA following delivery.

Other names

mRNA (in the context of therapeutic payload)therapeutic mRNAmRNA cargomRNA drug substance

Encodes therapeutic proteins by cellular translation; the resulting protein provides the therapeutic effect (protein replacement, vaccination, cell modification, etc.)