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Antigen Expression via Host Translation Machinery

Molecular classification: Protein Synthesis, Translation Machinery

Overview

Antigen expression via host translation machinery refers to the process by which foreign genetic material (such as viral RNA, DNA, or synthetic mRNA) introduced into a host cell is translated by the cell’s own ribosomes and associated factors to produce antigenic proteins. These antigens can then be presented on the cell surface or secreted, triggering an immune response. This mechanism is central to how many viruses replicate and how modern nucleic acid-based vaccines (e.g., mRNA vaccines) function.

Mechanism of action

N/A

Biological functions

Protein synthesisImmune response inductionViral replicationVaccine-mediated antigen production

Disease associations

InfectionCancer (indirectly, through viral oncoproteins)Autoimmunity (potentially, through aberrant antigen presentation)

Safety considerations

Off-target translationImmune over-activationPotential for insertional mutagenesis (with DNA vaccines, theoretically)Unintended immune responses

Interacting drugs

Antivirals (e.g., those targeting viral translation)

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