Related Experiment Video
Updated: Jan 29, 2026

Coculture Analysis of Extracellular Protein Interactions Affecting Insulin Secretion by Pancreatic Beta Cells
Published on: June 15, 2013
Determining the insulin secretion potential for certain specific G-protein coupled receptors in MIN6 pancreatic beta
Background/Aim:
The polypeptide hormone insulin is essential for the maintenance of whole-body fuel homeostasis, and defects in insulin secretion and/or action are associated with the development of type 1 and type 2 diabetes. The aim of this study was to assess the role of some G-protein coupled receptors (GPCRs), GPR54, GPR56, and GPR75, and cannabinoid receptors CB1R and CB2R, in the regulation of pancreatic β-cell function.
Materials And Methods:
Insulin secretion from mouse insulinoma β-cell line (MIN6) monolayers was assessed via insulin radioimmu-noassay (RIA). Reverse transcription-polymerase chain reaction (RT-PCR) was used to assess the expression of some specific GPCRs and the other receptors by MIN6 pancreatic β-cells.
Results:
The agonists were not found to be toxic for the MIN6 pancreatic β-cells within the range of the doses used in this study, whereas insulin secretion altered depending on the ligands and receptors. In addition, arachidonyl-2’-chloroethylamide (ACEA), carbachol, chemokine (C-C motif ) ligand-5 (CCL5), and exendin as well as phorbol myristate acetate (PMA) ligands showed significant increases in the insulin secretion of MIN6 pancreatic β-cells.
Conclusion:
Understanding the normal β-cell function and identifying the defects in β-cell function that lead to the development of diabetes will generate new therapeutic targets
Related Concept Videos
G-protein Coupled Receptors
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion
Insulin and C-peptide are...
G Protein-coupled Receptors
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
Pancreatic Juice and Secretion
When acidic chyme from the stomach enters the duodenum, it triggers the release of secretin, a hormone that prompts pancreatic juice secretion. After a fatty meal, cholecystokinin, another hormone, stimulates gallbladder contraction and enhances enzyme-rich...
Transducer Mechanism: G Protein–Coupled Receptors
GPCRs are also called heptahelical,...
Insulin: The Receptor and Signaling Pathways

