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Original Articles

Inhibition of Diabetes by an Insulin-Reactive CD4 T-Cell Clone in the Nonobese Diabetic Mouse

  1. Dan Zekzer,
  2. F Susan Wong,
  3. Li Wen,
  4. Martha Altieri,
  5. Tatyana Gurlo,
  6. Hermann von Grafenstein and
  7. Robert S Sherwin
  1. Sections of Endocrinology, Yale University School of Medicine New Haven, Connecticut
  2. Sections of Immunobiology, Yale University School of Medicine New Haven, Connecticut
  3. University of Southern California, School of Pharmacy Los Angeles, California
  1. Address correspondence and reprint requests to Dr. Robert Sherwin, Department of Internal Medicine, Section of Endocrinology, Yale University School of Medicine, 333 Cedar St., FMP 101, Box 208020, New Haven, CT 06520-8020.
Diabetes 1997 Jul; 46(7): 1124-1132. https://doi.org/10.2337/diab.46.7.1124
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Abstract

A cloned Thl cell line was isolated from pancreatic lymph nodes of NOD mice that carries a T-cell receptor encoding Vβ14 and proliferates in response to NOD islets, islet supernatant, and crystalline bovine and rat insulin, specifically to a B-chain peptide bound to IAg7. The response to islet supernatant was reduced by 75% by anti-insulin antibody treatment. The insulin-reactive clone reduced insulitis and totally blocked the development of spontaneous diabetes in NOD mice (n = 8) as well as the adoptive transfer of diabetes into irradiated NOD mice following the injection of splenocytes from diabetic mice (n = 13). Trafficking of the adoptively transferred cells was assessed by labeling the clone or diabetic splenocytes with a fluorescent marker (Dil). The labeled clone was detected in the islet periphery, whereas labeled splenocytes alone invaded the islets by 3 days. In contrast, the protective clone dramatically delayed and reduced the number of labeled diabetic splenocytes infiltrating the islet, although their appearance in the spleen was unaffected. In vitro, the clone as well as supernatant derived from the clone blocked the proliferation of diabetic NOD splenocytes to islets. This inhibitory effect was diminished by anti–transforming growth factor-β. In conclusion, an insulin-specific Thl cell was isolated from NOD mice that traffics to the islet and prevents the spontaneous development and the adoptive transfer of diabetes. It appears to act locally by releasing transforming growth factor-β and/or other factors that inhibit homing to and/or proliferation of diabetic splenocytes within the islet. These findings may provide insights into and suggest mechanisms for the protective effects of insulin therapy against diabetes.

  • Received August 22, 1996.
  • Revision received February 26, 1997.
  • Accepted February 26, 1997.
  • Copyright © 1997 by the American Diabetes Association

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July 1997, 46(7)
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Inhibition of Diabetes by an Insulin-Reactive CD4 T-Cell Clone in the Nonobese Diabetic Mouse
Dan Zekzer, F Susan Wong, Li Wen, Martha Altieri, Tatyana Gurlo, Hermann von Grafenstein, Robert S Sherwin
Diabetes Jul 1997, 46 (7) 1124-1132; DOI: 10.2337/diab.46.7.1124

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Inhibition of Diabetes by an Insulin-Reactive CD4 T-Cell Clone in the Nonobese Diabetic Mouse
Dan Zekzer, F Susan Wong, Li Wen, Martha Altieri, Tatyana Gurlo, Hermann von Grafenstein, Robert S Sherwin
Diabetes Jul 1997, 46 (7) 1124-1132; DOI: 10.2337/diab.46.7.1124
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