Host factors involved in myxovirus replication

The term "Host factors involved in myxovirus replication" refers to a broad category of cellular proteins and pathways that are hijacked by viruses in the Orthomyxoviridae (e.g., Influenza) and Paramyxoviridae (e.g., Measles, Mumps) families to facilitate their life cycle. These factors include cell surface receptors for entry (such as sialic acid), intracellular transport proteins (like importins), and nuclear machinery required for viral RNA synthesis and processing. While individual proteins within this group, such as Exportin-1 (XPO1) or Myxovirus resistance protein 1 (MX1), are specific therapeutic targets, the collective term itself describes a functional class rather than a single molecular entity. In drug discovery, targeting host factors is an attractive strategy to develop antivirals with a high barrier to resistance, as the virus cannot easily mutate to bypass a required cellular component. However, because these factors often perform essential physiological roles for the host, identifying a therapeutic window that inhibits viral replication without causing significant host toxicity remains a major challenge.

Other names

Host cell factorsViral host factorsCellular cofactors for myxovirusesRestriction factors

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