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Viral mimicry of the complement system.

John Bernet1, Jayati Mullick, Akhilesh K Singh

  • 1National Centre for Cell Science, Pune University Campus, Ganeshkhind, Pune 411 007, India.

Journal of Biosciences
|May 8, 2003
PubMed
Summary
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Viruses employ sophisticated strategies to evade the host's complement system, a key part of innate immunity. This review details viral mechanisms for subverting complement defenses, including molecular mimicry, to ensure pathogen survival.

Area of Science:

  • Immunology
  • Virology
  • Molecular Biology

Background:

  • The complement system is a crucial innate immune defense against pathogens.
  • Viruses, despite their simplicity, are targeted by complement activation.
  • Viral strategies exist to control and exploit complement interactions.

Purpose of the Study:

  • To review viral strategies for evading complement-mediated immunity.
  • To highlight the role of viral proteins in subverting complement.
  • To emphasize molecular mimicry in virus-complement interactions.

Main Methods:

  • Literature review of viral complement evasion mechanisms.
  • Analysis of viral protein interactions with complement components.
  • Focus on molecular mimicry strategies.

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Main Results:

  • Viruses utilize diverse mechanisms to escape complement attack.
  • Viral proteins can mimic host proteins to interfere with complement.
  • Examples include poxviruses, herpesviruses, retroviruses, paramyxoviruses, and picornaviruses.

Conclusions:

  • Viruses have evolved effective strategies to counteract complement defenses.
  • Understanding these viral evasion tactics is vital for therapeutic development.
  • Molecular mimicry is a significant viral strategy to disarm complement.