Related Experiment Video
Updated: Jun 26, 2026

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy
Published on: December 7, 2017
CXCL10 impairs beta cell function and viability in diabetes through TLR4 signaling
Fabienne T Schulthess1, Federico Paroni, Nadine S Sauter
1Larry L. Hillblom Islet Research Center, Department of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA.
Interferon gamma-inducible protein 10 (CXCL10) promotes beta cell failure in diabetes by inducing apoptosis. This protein, elevated in diabetic patients, signals through TLR4, not CXCR3, contributing to disease progression.
Area of Science:
- Endocrinology
- Immunology
- Cell Biology
Background:
- Beta cell destruction via apoptosis is central to type 1 and type 2 diabetes (T1/T2DM) pathogenesis.
- Reduced beta cell mass leads to disease progression in diabetes.
Purpose of the Study:
- To investigate the role of interferon gamma-inducible protein 10 (CXCL10) in beta cell destruction.
- To elucidate the signaling pathway of CXCL10 in beta cell failure.
Main Methods:
- Quantification of CXCL10 mRNA in islets from T2DM patients and controls.
- Immunohistochemical analysis of CXCL10 expression in pancreatic sections.
- In vitro treatment of human islets with CXCL10 to assess viability, insulin secretion, and mRNA levels.
- Analysis of intracellular signaling pathways (Akt, JNK, PAK-2) and receptor involvement (CXCR3, TLR4).
Main Results:
- Islets from T2DM patients showed significantly higher CXCL10 mRNA levels.
- CXCL10 was expressed in beta cells of diabetic and obese nondiabetic individuals.
- CXCL10 treatment reduced beta cell viability, insulin secretion, and insulin mRNA.
- CXCL10 activated Akt, JNK, and cleaved PAK-2, promoting apoptosis via TLR4, independent of CXCR3.
Conclusions:
- CXCL10 is implicated in triggering beta cell destruction in diabetes.
- CXCL10 acts as a ligand for TLR4, mediating beta cell failure.
- Targeting the CXCL10-TLR4 axis may offer a therapeutic strategy for diabetes.
More Related Videos
Related Concept Videos
Type I Diabetes II: Pathophysiology
Type II Diabetes I: Introduction
Type II Diabetes II: Pathophysiology
Type I Diabetes I: Introduction
Diabetes Mellitus: Overview and Type I Subtype
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Pathophysiology of Diabetes
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility, suggesting a...

