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Related Experiment Videos

Mouse CD20 expression and function.

Junji Uchida1, Youngkyun Lee, Minoru Hasegawa

  • 1Department of Immunology, Duke University Medical Center, Durham, NC 27710, USA.

International Immunology
|December 23, 2003
PubMed
Summary
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Mouse CD20 is expressed on B cells and influences calcium signaling, similar to human CD20. This study establishes a mouse model to investigate CD20 function and anti-CD20 immunotherapies.

Area of Science:

  • Immunology
  • Cell Biology

Background:

  • CD20 is crucial for human B cell proliferation and a key target in immunotherapy.
  • Understanding mouse CD20 function is vital for developing effective anti-CD20 therapies.

Purpose of the Study:

  • To characterize mouse CD20 expression and function using novel monoclonal antibodies and CD20-deficient mice.
  • To establish a relevant animal model for studying CD20 in vivo.

Main Methods:

  • Assessment of CD20 expression on B cells during development and maturation.
  • Analysis of B cell function in CD20-deficient mice, including IgM expression and calcium signaling.
  • Utilized a new panel of CD20-specific monoclonal antibodies (mAbs).

Main Results:

Related Experiment Videos

  • CD20 expression is B cell-restricted, appearing during late pre-B cell development and increasing with maturation.
  • Transitional B cell subsets (T1) express high CD20 levels, serving as a potential marker.
  • CD20-deficient mice showed reduced IgM expression and impaired CD19-induced calcium responses, indicating CD20's role in transmembrane calcium flux.
  • B cell development, localization, signaling, proliferation, and antibody responses were largely normal in CD20-deficient mice.

    • Conclusions:

    • Mouse and human CD20 share conserved expression patterns and functional roles, particularly in calcium signaling.
    • The CD20-deficient mouse model accurately reflects human CD20 function, aiding in the study of anti-CD20 immunotherapies.