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Related Experiment Videos

Diabetogenic T-cell clones

K Haskins1, D Wegmann

  • 1Barbara Davis Center for Childhood Diabetes, Department of Immunology, University of Colorado Health Sciences Center, Denver 80262, USA.

Diabetes
|October 1, 1996
PubMed
Summary
This summary is machine-generated.

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Report from the 1st International NOD Mouse T-Cell Workshop and the follow-up mini-workshop.

Diabetes·2001

Investigating T-cells in type 1 diabetes (T1D) reveals specific T-cell clones reactive to islet antigens. Insulin-reactive clones derived from NOD mice are particularly diabetogenic, suggesting a key role in disease initiation.

Area of Science:

  • Immunology
  • Endocrinology
  • Autoimmunity

Background:

  • T-cells are implicated in the pathogenesis of insulin-dependent diabetes mellitus (IDDM).
  • New tools, including T-cell clones reactive with islet antigens, enhance T-cell studies.
  • NOD mice serve as a model for studying T-cell responses in diabetes.

Purpose of the Study:

  • To characterize diabetogenic T-cell clones derived from NOD mice.
  • To investigate the antigen specificities of these T-cell clones.
  • To explore the potential role of specific islet antigens in initiating autoimmune diabetes.

Main Methods:

  • Generation and characterization of T-cell lines and clones from NOD mice.
  • Analysis of T-cell cytokine production (e.g., T-helper 1 profile).

Related Experiment Videos

  • Assessment of T-cell reactivity against islet antigens, islet cells, and specific islet cell proteins (insulin, GAD, heat shock proteins).
  • Evaluation of the ability of T-cell clones to transfer diabetes.

    • Main Results:

    • Most diabetogenic T-cell clones are CD4+ and exhibit T-helper 1 (Th1)-like cytokine production.
    • CD8+ cytotoxic clones have been identified but generally do not transfer diabetes alone.
    • T-cell clones show reactivity to whole islets, isolated islet cells, or islet membrane preparations.
    • Specific clones react to defined islet cell proteins, including insulin, GAD, and heat shock proteins.
    • Insulin-reactive T-cell clones have demonstrated diabetogenicity.

    Conclusions:

    • CD4+ Th1-like T-cells play a significant role in autoimmune diabetes pathogenesis.
    • Specific islet antigens, particularly insulin, may be critical targets for diabetogenic T-cells.
    • The identification of dominant initiating antigens in autoimmune diabetes remains an important area of investigation.