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Updated: Oct 14, 2025

Accelerated Type 1 Diabetes Induction in Mice by Adoptive Transfer of Diabetogenic CD4+ T Cells
Published on: May 6, 2013
IL-1beta promotes the age-associated decline of beta cell function
Marianne Böni-Schnetzler1,2, Hélène Méreau1,2, Leila Rachid1,2
1Endocrinology, Diabetes, and Metabolism, University Hospital of Basel, 4031 Basel, Switzerland.
Aging exacerbates type 2 diabetes risk. Interleukin-1 beta (IL-1β) impairs insulin secretion and beta cell function in aged mice, highlighting its role in age-related diabetes.
Area of Science:
- Immunology
- Endocrinology
- Gerontology
Background:
- Aging is a primary risk factor for type 2 diabetes.
- The interleukin-1 (IL-1) system's role in age-related insulin secretion decline is unclear.
Purpose of the Study:
- To investigate the impact of the IL-1 system on insulin secretion in aged mice.
- To determine the specific role of IL-1 beta in age-associated beta cell dysfunction.
Main Methods:
- Compared insulin secretion, islet morphology, and cell proliferation in aged wild-type and IL-1 beta knockout mice.
- Utilized myeloid cell-specific IL-1 beta knockout models.
- Administered IL-1 beta to isolated islets to assess its direct effects.
Main Results:
- Aged mice lacking IL-1 beta exhibited improved insulin secretion, enhanced islet size and number, and increased proliferation.
- Myeloid cell-specific IL-1 beta knockout preserved glucose-stimulated insulin secretion in aging.
- IL-1 beta treatment reduced key genes (Ins2, Kir6.2, E2f1) in beta cells.
Conclusions:
- IL-1 beta drives the age-associated decline in beta cell function and insulin secretion.
- Targeting IL-1 beta may offer a therapeutic strategy for age-related type 2 diabetes.
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