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Related Experiment Videos

DC-SIGN: binding receptor for HCV?

Zhi-Hua Feng1, Quan-Chu Wang, Qing-He Nie

  • 1The Center of Diagnosis and Treatment for Infectious Diseases of PLA, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, Shaanxi Province, China. fengzh@fmmu.edu.cn

World Journal of Gastroenterology
|March 31, 2004
PubMed
Summary
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Dendritic cell-specific intercellular adhesion molecule-3 grabbing non-integrin (DC-SIGN) is crucial for dendritic cell (DC) function and pathogen entry. Targeting DC-SIGN offers potential strategies for controlling Hepatitis C Virus (HCV) and other infections.

Area of Science:

  • Immunology
  • Cell Biology
  • Virology

Background:

  • DC-SIGN is a C-type lectin receptor on dendritic cells (DCs) vital for immune cell interactions and pathogen recognition.
  • It mediates T cell interactions via ICAM-3 and DC migration via ICAM-2.
  • Pathogens like HIV, HCV, Ebola, and Mycobacterium tuberculosis exploit DC-SIGN for infection.

Purpose of the Study:

  • To elucidate the role of DC-SIGN in viral infections, particularly HCV.
  • To investigate the implications of DC-SIGN binding for T cell interactions and antigen presentation.
  • To explore the therapeutic potential of targeting DC-SIGN.

Main Methods:

  • The study focuses on the molecular interactions of DC-SIGN with viral glycoproteins, specifically HCV E2.
  • It examines the functional consequences of DC-SIGN binding on DC migration and T cell activation.

Related Experiment Videos

  • In silico and in vitro analyses are implied to understand binding affinities and cellular responses.

    • Main Results:

    • DC-SIGN acts as a high-affinity receptor for HCV.
    • HCV E2 interaction with DC-SIGN facilitates viral entry into DCs.
    • This interaction can impair DC-T cell interactions, hindering antigen presentation.

    Conclusions:

    • DC-SIGN plays a significant role in HCV pathogenesis by facilitating viral entry and immune evasion.
    • Targeting DC-SIGN presents a promising therapeutic avenue for managing HCV infection.
    • Modulating DC-SIGN function could be key in developing strategies for autoimmunity and cancer immunotherapy.