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Human IgG Fc receptor heterogeneity: molecular aspects and clinical implications

J G van de Winkel1, P J Capel

  • 1Dept of Immunology, University Hospital Utrecht, The Netherlands.

Immunology Today
|May 1, 1993
PubMed

Insights

Fc gamma receptors link antibody responses to cellular immunity, triggering functions like phagocytosis and inflammation. Understanding their diverse structures and isoforms is crucial for immune system research.

Area of Science:

  • Immunology
  • Molecular Biology

Background:

  • Fc gamma receptors (Fc gamma R) bridge humoral and cellular immunity by mediating IgG-initiated responses.
  • These receptors trigger critical immune functions including phagocytosis, ADCC, and inflammatory mediator release.

Purpose of the Study:

  • To review recent advancements in understanding Fc gamma receptor structure and diversity.
  • To highlight the complexity arising from multiple isoforms and genetic polymorphisms.

Main Methods:

  • Review of recent scientific literature.
  • Analysis of data from monoclonal antibodies and cDNA probes.

Main Results:

  • Fc gamma R are part of the immunoglobulin superfamily with at least 12 human isoforms across three main classes (hFc gamma RI, hFc gamma RII, hFc gamma RIII).
  • Genetic polymorphisms further increase Fc gamma R heterogeneity.
  • Emerging evidence underscores the significance of this Fc gamma R diversity.

Conclusions:

  • Significant progress has been made in elucidating Fc gamma receptor structure.
  • The heterogeneity of Fc gamma receptors, including isoforms and polymorphisms, is a key area of current research in immunology.

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