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Related Experiment Videos

IFN-Lambda: The Key to Norovirus's Secret Hideaway.

Sonja M Best1, Shelly J Robertson1

  • 1Innate Immunity and Pathogenesis Section, Laboratory of Virology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, NIH, 903 South Fourth Street, Hamilton, MT 59840, USA.

Cell Host & Microbe
|October 13, 2017
PubMed
Summary

Norovirus infection of intestinal cells is enabled by evading the innate immune system. This immune evasion allows norovirus to persist, spread, and infect hosts.

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Area of Science:

  • Virology
  • Immunology
  • Gastroenterology

Background:

  • Cellular tropism of noroviruses in immune-competent hosts is not well understood.
  • Norovirus infection poses a significant public health challenge, causing widespread gastroenteritis.

Purpose of the Study:

  • To elucidate the mechanisms underlying norovirus cellular tropism.
  • To investigate the role of innate immune evasion in norovirus infection and persistence.

Main Methods:

  • Studies utilized in vitro and in vivo models to examine norovirus-host interactions.
  • Researchers analyzed viral gene expression and host immune responses during infection.

Main Results:

  • Norovirus innate immune evasion is critical for the infection of intestinal epithelial cells.

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  • Immune evasion facilitates the virus's ability to escape adaptive immunity.
  • These mechanisms contribute to viral persistence and shedding in infected hosts.

    • Conclusions:

    • Innate immune evasion is a key determinant of norovirus tropism and pathogenesis.
    • Understanding these mechanisms can inform strategies for controlling norovirus outbreaks.