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CD69 and regulation of the immune function

R Marzio1, J Mauël, S Betz-Corradin

  • 1Department of Internal Medicine, Immunology and Infectious Diseases, University of Bari Medical School, Italy.

Immunopharmacology and Immunotoxicology
|August 31, 1999
PubMed

Insights

CD69, a transmembrane glycoprotein, is expressed on various immune cells and plays a role in hematopoietic cell biology. Its involvement in diseases like rheumatoid arthritis suggests therapeutic potential.

Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • CD69, also known as activation inducer molecule, is a type II transmembrane glycoprotein.
  • It belongs to the signal transducing receptors family and features a C-type lectin binding domain.
  • CD69 is expressed on various immune cells, including T and B lymphocytes, NK cells, macrophages, and monocytes.

Purpose of the Study:

  • To summarize the known information about CD69, including its structure, expression, and potential roles.
  • To highlight the involvement of CD69 in hematopoietic cell biology and disease pathogenesis.

Main Methods:

  • Literature review and synthesis of existing research on CD69.
  • Analysis of CD69 expression patterns across different cell types and conditions.

Main Results:

  • CD69 expression is induced in vitro on most hematopoietic lineages and constitutively expressed on human monocytes, platelets, and Langerhans cells.
  • Crosslinking CD69 induces intracellular signals, suggesting a functional role for the receptor.
  • A specific ligand for CD69 has not yet been identified.

Conclusions:

  • CD69's wide cellular distribution and signaling capabilities suggest a significant role in immune cell function.
  • Emerging evidence links CD69 to the pathogenesis of inflammatory diseases such as rheumatoid arthritis, chronic liver diseases, asthma, and AIDS.

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