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Updated: Jun 23, 2026
08:32
Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production
Published on: March 2, 2014
NPC1 promotes HTNV replication by controlling innate immune response
Hansong Qi1, Yuechun Wu1,2, Rong Wei1,2
1Key Laboratory of Genetic Evolution and Animal Models, Yunnan International Joint Laboratory of Zoonotic Viruses, Yunnan Key Laboratory of Biodiversity Information, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.
Frontiers in Immunology
|June 22, 2026
Summary
Hantaan virus (HTNV) infection is linked to Niemann-Pick C1 (NPC1), a cholesterol transporter. NPC1 promotes HTNV replication by suppressing the host
Area of Science:
- Virology
- Immunology
- Computational Biology
Background:
- Hantaan virus (HTNV) is a significant pathogen causing hemorrhagic fever with renal syndrome (HFRS) in Asia.
- Understanding virus-host interactions, especially protein-protein interactions, is crucial for HFRS pathogenesis and patient outcomes.
- The specific interactions between HTNV and host proteins remain largely uncharacterized.
Purpose of the Study:
- To identify host proteins that interact with the HTNV glycoprotein (GP).
- To elucidate the role of identified host factors in HTNV replication and pathogenesis.
- To explore potential antiviral targets based on virus-host interactions.
Main Methods:
- Utilized deep-learning-based virtual screening (MaSIF) to predict potential host-virus interactions.
- Employed immunoprecipitation coupled with mass spectrometry (IP-MS) to experimentally validate protein-protein interactions.
- Investigated the functional role of identified host factors in HTNV replication and innate immune response.
Main Results:
- Identified Niemann-Pick C1 (NPC1), a host cholesterol transporter, as a binding partner of HTNV GP.
- Demonstrated that NPC1 significantly promotes HTNV replication.
- Found that NPC1 mitigates the anti-viral innate immune response following HTNV infection, a novel function.
Conclusions:
- NPC1 interacts with HTNV GP and facilitates viral replication.
- NPC1 plays a previously unrecognized role in suppressing antiviral immunity during HTNV infection.
- NPC1 represents a potential therapeutic target for antiviral strategies against HTNV.
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