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Related Experiment Videos

Dendritic-like cells from relB mutant mice

L DiMolfetto1, C Reilly, Q Wei

  • 1Department of Immunology IMM-25, Scripps Research Institute, La Jolla, California, USA.

Advances in Experimental Medicine and Biology
|January 1, 1997
PubMed
Summary
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Mice lacking the relB transcription factor show impaired dendritic cell development, leading to poor immune responses and absent secondary lymphoid tissues. This highlights relB

Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • Mice deficient in the NF-kappa B transcription factor relB exhibit defects in mature dendritic cell production.
  • Absence of secondary lymphoid tissues and impaired antigen-presenting function in spleen cells are observed.
  • Thymic negative selection is impaired, resulting in poor in vivo immune responses.

Purpose of the Study:

  • Investigate the nature of the dendritic cell defect in relB-deficient mice.
  • Determine the functional capabilities of dendritic-like cells derived from mutant bone marrow.
  • Assess the ability of relB mutant dendritic cells to aggregate with T cells.

Main Methods:

  • Culturing mutant bone marrow with GM-CSF to assess dendritic cell accumulation and function.

Related Experiment Videos

  • Stimulating allogeneic mixed lymphocyte cultures with dendritic-like cells.
  • Evaluating the in vitro aggregation of dendritic cells with syngeneic T cells.

    • Main Results:

    • Bone marrow cultures showed delayed accumulation of dendritic cell features, but per-cell potency was comparable to wild type.
    • Skin Langerhans cells from mutant mice effectively stimulated allogeneic T cells in culture.
    • relB mutant dendritic-like cells formed irregular, small aggregates with T cells, unlike compact aggregates formed by wild type cells.

    Conclusions:

    • relB mutant dendritic-like cells possess some mature dendritic cell functions but exhibit deficiencies in others.
    • The impaired aggregation with T cells may explain the observed defects in immune responses and lymphoid tissue development.
    • Understanding relB's regulatory role is crucial for elucidating the molecular basis of dendritic cell development and function.