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Establishment of cell lines stably expressing mumps virus glycoproteins

M Hishiyama1, K Tanabayashi, K Takeuchi

  • 1Department of Viral Disease and Vaccine Control, National Institute of Health, Tokyo.

Japanese Journal of Medical Science & Biology
|February 1, 1996
PubMed

Insights

Researchers created cell lines expressing mumps virus hemagglutinin-neuraminidase (HeLa-HN) and fusion proteins (HeLa-F). HeLa-F cells fused extensively when infected, while HeLa-HN cells resisted fusion, revealing protein-specific roles in mumps virus-induced cell fusion.

Area of Science:

  • Virology
  • Cell Biology
  • Molecular Biology

Background:

  • Mumps virus causes cell fusion through its viral proteins.
  • Understanding the specific roles of hemagglutinin-neuraminidase (HN) and fusion (F) proteins in this process is crucial.

Purpose of the Study:

  • To investigate the distinct roles of mumps virus HN and F proteins in mediating cell-cell fusion.
  • To establish and characterize cell lines engineered to express these specific viral proteins.

Main Methods:

  • Generation of stable cell lines expressing either the hemagglutinin-neuraminidase (HeLa-HN) or fusion (HeLa-F) proteins of a fusogenic mumps virus strain.
  • Infection of these engineered cell lines with a nonfusogenic mumps virus strain to observe fusion induction.

Main Results:

  • HeLa-F cells exhibited extensive cell fusion upon infection with a nonfusogenic mumps virus strain, indicating the F protein's fusogenic capability.
  • HeLa-HN cells demonstrated resistance to cell fusion induction, suggesting the HN protein alone does not mediate fusion.

Conclusions:

  • The fusion (F) protein is the primary mediator of mumps virus-induced cell-cell fusion.
  • The hemagglutinin-neuraminidase (HN) protein plays a limited or no direct role in the fusion process itself.

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