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Updated: Aug 9, 2026
Single-cell Transcriptomic Analyses of Mouse Pancreatic Endocrine Cells
Published on: September 30, 2018
Massive parallel gene expression profiling of RINm5F pancreatic islet beta-cells stimulated with interleukin-1beta
K Rieneck1, L F Bovin, K Josefsen
1Institute for Inflammation Research, Dept. 7541, Rigshospitalet, National University Hospital, Copenhagen, Denmark. klausb@inet.uni2.dk
Insights
Interleukin-1 beta (IL-1β) exposure causes pancreatic beta-cell death and reduced insulin production. This study reveals novel gene expression changes in beta-cells in response to IL-1β, offering insights into type 1 diabetes pathogenesis.
Area of Science:
- Molecular Biology
- Endocrinology
- Immunology
Background:
- Interleukin-1 (IL-1) is a cytokine implicated in type 1 diabetes pathogenesis due to its potential to induce pancreatic beta-cell death.
- Understanding the molecular mechanisms of IL-1-induced beta-cell dysfunction is crucial for developing therapeutic strategies.
Purpose of the Study:
- To investigate the quantitative mRNA expression changes in a rat pancreatic beta-cell line (RINm5F) upon challenge with Interleukin-1 beta (IL-1β).
- To identify novel genes and pathways regulated by IL-1β in beta-cells, contributing to the understanding of type 1 diabetes pathogenesis.
Main Methods:
- Quantitative mRNA expression profiling of 24,000 genes in RINm5F cells exposed to 30 and 1,000 pg/ml of recombinant human IL-1β.
- Analysis of gene expression at three time points: 2, 4, and 24 hours post-challenge.
- Functional categorization of differentially regulated genes based on known biological roles.
Main Results:
- IL-1β at 1,000 pg/ml significantly decreased insulin production and induced cell death over 4 days.
- 146 full-length genes and numerous expressed sequence tags were differentially regulated (≥3-fold) at various time points.
- Many regulated transcripts, including alpha-endosulfine and K+ channel Kir6.2, were not previously known to be modulated by IL-1β in beta-cells.
- Affected pathways include immune response, stress-related pathways, insulin secretion, vesicle trafficking, and cholesterol biosynthesis.
Conclusions:
- IL-1β significantly alters gene expression in pancreatic beta-cells, impacting key functions like insulin secretion and cell survival.
- The identified differentially regulated genes represent potential novel targets for understanding and treating type 1 diabetes.
- This study provides a comprehensive transcriptomic profile of IL-1β-induced changes in beta-cells, advancing knowledge of diabetes pathogenesis.
Abstract:
Interleukin 1 (IL-1) is a pleiotropic cytokine with the potential to kill pancreatic beta-cells, and this unique property is thought to be involved in the pathogenesis of type I diabetes mellitus. We therefore determined the quantitative expression of 24,000 mRNAs of RINm5F, an insulinoma cell line derived from rat pancreatic beta-cells, before and after challenge with 30 and 1,000 pg/ml of recombinant human IL-1beta. The highest concentration resulted in decreased insulin production and cell death over a period of 4 days. Using three different time points, 2, 4 and 24 hours after challenge, we found that 146 full-length genes and a large number of expressed sequence tags were differentially regulated 3-fold or more. Most of the differentially regulated transcripts have not previously been described to be regulated by IL-1beta in beta-cells. We have analysed the expression data and sorted the genes into groups according to functional relations on the basis of knowledge of the structure or function ascribed to the individual genes. Many of the differentially regulated genes are known to play a role in immune- and stress-related pathways as well as in insulin secretion and vesicle trafficking, e.g. alpha-endosulfine and K+ channel Kir6.2 are differentially regulated. A number of transcripts in the biosynthesis pathway for cholesterol are also differentially regulated.
