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Complement evasion strategies of microorganisms.

N R Cooper1

  • 1Dept of Immunology, Scripps Research Institute, La Jolla, CA 92037.

Immunology Today
|September 1, 1991
PubMed
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Pathogens evade the human complement system using molecular mimicry. Microorganisms duplicate complement-like structures to avoid destruction and facilitate infection.

Area of Science:

  • Immunology
  • Microbiology
  • Pathogenesis

Background:

  • Microbial pathogens frequently evade host immune defenses, including the complement system, to establish infection.
  • The complement system is a critical component of innate immunity, mediating pathogen clearance and inflammation.

Purpose of the Study:

  • To review the diverse mechanisms employed by microbial pathogens to evade complement-mediated destruction.
  • To highlight the role of molecular mimicry in pathogen survival and infection facilitation.

Main Methods:

  • Literature review of scientific articles on microbial evasion of the complement system.
  • Analysis of documented instances of pathogens mimicking host complement components.

Main Results:

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  • Pathogens have evolved sophisticated strategies to interfere with complement activation and effector functions.
  • Microorganisms frequently duplicate structural and functional epitopes of complement proteins, effectively camouflaging themselves.
  • This mimicry not only prevents complement-mediated lysis but can also promote pathogen adhesion and invasion.

Conclusions:

  • Molecular mimicry is a significant virulence factor enabling pathogens to subvert host immunity.
  • Understanding these evasion mechanisms is crucial for developing novel therapeutic strategies against infectious diseases.