Herpesvirus Protein US10 Suppresses Host Immune Responses
Researchers discover how the Anatid Herpesvirus 1 protein US10 blocks immune defenses to facilitate viral replication.
Updated on Oct. 23, 2026 in Life Sciences
The Anatid Herpesvirus 1 protein US10 effectively suppresses host innate immunity by targeting the STING protein for degradation. This mechanism prevents the production of type I interferons, allowing the virus to thrive within host cells.
Why it matters
Understanding the specific proteins that viruses use to evade immune detection is critical for developing new antiviral strategies. This discovery highlights a pathway where US10 facilitates viral survival and replication.
The US10 protein binds to autophagy-related protein LC3B and recruits E3 ligase TRIM13 to promote the lysosomal degradation of STING. This process is further supported by US10-induced endoplasmic reticulum stress through the PERK pathway.
The players
Anatid Herpesvirus 1
This is a viral pathogen known to infect ducks and other waterfowl.
The details
By associating with LC3B and STING, the US10 protein ensures that vital immune signaling molecules are delivered to lysosomes for destruction. Furthermore, the protein restricts interferon-stimulated gene expression to blunt the hosts overall antiviral response.
Timeline
October 23, 2026: Findings were formally published.
The Big Picture
This study advances our understanding of the STING signaling pathway's role in innate immunity by detailing how a specific herpesvirus protein sabotages this mechanism. It challenges existing assumptions about how simple proteins can bridge disparate cellular processes like autophagy and ER stress.
By identifying the specific proteins involved in immune evasion, scientists can now focus on developing targeted therapeutics that prevent US10 from binding to STING. Such advancements could eventually inform the creation of more effective vaccines or treatments for avian viral infections.
The takeaway
The research demonstrates that deleting the US10 protein significantly reduces the ability of the virus to replicate and cause disease. Identifying these vulnerabilities is a key step in controlling viral outbreaks in poultry populations.
Further reading
For more research on viral mechanisms, browse our Life Sciences section.
Source note: This article includes information reported by Nature.
