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Complement factor H in host defense and immune evasion.

Raffaella Parente1, Simon J Clark2, Antonio Inforzato3,4

  • 1Humanitas Clinical and Research Center, Via Manzoni 56, Rozzano, 20089, Milan, Italy.

Cellular and Molecular Life Sciences : CMLS
|December 13, 2016
PubMed
Summary
This summary is machine-generated.

Factor H is a key regulator of the complement system, preventing immune attacks on host tissues. Dysregulation or pathogen hijacking of Factor H contributes to various diseases, including infections and cancer.

Keywords:
Cancer immunologyComplement cascadeComplement factor HGlycan markersInflammatory diseasesInnate immunity

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Area of Science:

  • Immunology
  • Molecular Biology

Background:

  • The complement system is a crucial part of innate immunity, regulating inflammatory responses.
  • Factor H is the primary inhibitor of complement activation, protecting host tissues by binding to self-markers.
  • Dysregulation of Factor H is linked to autoimmune diseases like age-related macular degeneration and atypical hemolytic uremic syndrome.

Purpose of the Study:

  • To review the structure and function of Factor H.
  • To explore the role of Factor H in immune evasion by pathogens and cancer cells.
  • To highlight emerging roles of Factor H in infectious diseases and cancer pathophysiology.

Main Methods:

  • Literature review of recent and historical studies on Factor H.
  • Analysis of Factor H's interaction with self-markers and its inhibitory mechanisms.
  • Examination of Factor H's involvement in pathogen evasion and cancer immune escape.

Main Results:

  • Factor H's structure enables recognition of self-markers to prevent complement activation.
  • Mutations in Factor H are associated with complement-related diseases.
  • Pathogens and cancer cells exploit Factor H to evade immune surveillance.

Conclusions:

  • Factor H is critical for maintaining immune homeostasis and preventing self-damage.
  • Altered Factor H function contributes to disease pathogenesis in infections and cancer.
  • Further research into Factor H's structure-function relationship is essential for therapeutic strategies.