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Effects of daintain/AIF-1 on β cell dysfunction in INS-1 cells
Xinyuan Huang1, Yanying Zhao, Shaohui Jia
1Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, China.
Bioscience, Biotechnology, and Biochemistry
|September 8, 2011
Summary
Novel inflammatory cytokine daintain/AIF-1 reduces pancreatic beta cell viability and insulin secretion. These findings suggest daintain/AIF-1 contributes to beta cell dysfunction in type-1 diabetes.
Area of Science:
- Immunology
- Endocrinology
- Cell Biology
Background:
- Pancreatic beta cell dysfunction is central to type-1 diabetes pathogenesis.
- Inflammatory cytokines are implicated in beta cell damage.
- The specific role of novel inflammatory cytokines like daintain/AIF-1 remains unclear.
Purpose of the Study:
- To investigate the effects of daintain/AIF-1 on INS-1β cells.
- To determine the impact of daintain/AIF-1 on beta cell function and survival.
Main Methods:
- INS-1β cells were incubated with daintain/AIF-1.
- Cell viability, glucose-stimulated insulin secretion (GSIS), apoptosis, and nitric oxide (NO) production were measured.
Main Results:
- Daintain/AIF-1 significantly decreased INS-1β cell viability.
- Daintain/AIF-1 impaired glucose-stimulated insulin secretion.
- Apoptosis and nitric oxide production were upregulated in response to daintain/AIF-1.
Conclusions:
- Daintain/AIF-1 exerts deleterious effects on pancreatic beta cells.
- These findings highlight daintain/AIF-1's potential role in type-1 diabetes-associated beta cell dysfunction.
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