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2B4/CD48-mediated regulation of lymphocyte activation and function

Erika Assarsson1, Taku Kambayashi, Catrine M Persson

  • 1Department of Medicine, Center for Infectious Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden. erika@liai.org

Journal of Immunology (Baltimore, Md. : 1950)
|August 6, 2005
PubMed

Insights

The 2B4 molecule, also known as CD244, interacts with CD48 on immune cells. Recent studies suggest 2B4 acts primarily as an inhibitory receptor in mice, challenging previous views of its activating role.

Area of Science:

  • Immunology
  • Molecular Biology

Background:

  • 2B4 (CD244) is an Ig superfamily member expressed on innate and T cells.
  • It interacts with CD48, found on hematopoietic cells.

Purpose of the Study:

  • To clarify the multifunctional nature of 2B4-CD48 interactions.
  • To delineate the current understanding of 2B4-CD48 roles in lymphocytes.

Main Methods:

  • Review and synthesis of existing literature on 2B4 and CD48.
  • Analysis of studies involving 2B4-deficient mice.

Main Results:

  • Evidence suggests 2B4 functions predominantly as an inhibitory receptor in mice.
  • 2B4 may also act as a costimulatory ligand.

Conclusions:

  • The 2B4 molecule exhibits more complex functions than previously recognized.
  • Understanding 2B4-CD48 interactions is crucial for innate and adaptive immunity.

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