Cell surface activation of the alternative complement pathway by the fusion protein of measles virus

Patricia Devaux, Dale Christiansen, Sébastien Plumet, Denis Gerlier

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Measles virus (MV)-infected cells are activators of the alternative human complement pathway, resulting in high deposition of C3b on the cell surface. Activation was observed independent of whether CD46 was used as a cellular receptor and did not correlate with CD46 down-regulation. The virus itself was an activator of the alternative pathway and was covered by C3b/C3bi, resulting in some loss in infectivity without loss of virus binding to target cells. The cell surface expression of MV fusion (F), but not haemagglutinin, envelope protein resulted in complement activation of the Factor B-dependent alternative pathway in a dose-dependent manner and F-C3b complexes were formed. The underlying activation mechanism was not related to any decrease in cell surface expression of the complement regulators CD46 and CD55. The C3b/C3bi coating of MV-infected cells and virus should ensure enhanced targeting of MV antigens to the immune system, through binding to complement receptors.

Original languageEnglish (US)
Pages (from-to)1665-1673
Number of pages9
JournalJournal of General Virology
Volume85
Issue number6
DOIs
StatePublished - Jun 2004
Externally publishedYes

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Alternative Complement Pathway
Measles virus
Complement C3b
Proteins
Viruses
Virus Attachment
Complement Receptors
Complement Factor B
Complement Activation
Hemagglutinins
Immune System
Down-Regulation
Antigens

ASJC Scopus subject areas

  • Immunology
  • Virology

Cite this

Cell surface activation of the alternative complement pathway by the fusion protein of measles virus. / Devaux, Patricia; Christiansen, Dale; Plumet, Sébastien; Gerlier, Denis.

In: Journal of General Virology, Vol. 85, No. 6, 06.2004, p. 1665-1673.

Research output: Contribution to journalArticle

Devaux, Patricia ; Christiansen, Dale ; Plumet, Sébastien ; Gerlier, Denis. / Cell surface activation of the alternative complement pathway by the fusion protein of measles virus. In: Journal of General Virology. 2004 ; Vol. 85, No. 6. pp. 1665-1673.
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