Endocrine system on chip for a diabetes treatment model

Area of Science:

• Endocrinology
• Biotechnology
• Cell Biology

Background:

• The endocrine system regulates vital bodily functions through hormones.
• Diabetes mellitus is a major endocrine disorder linked to insulin deficiency or resistance.
• Current drug screening methods for diabetes can be improved with more physiologically relevant models.

Purpose of the Study:

• To create a novel 'endocrine system on chip' model for diabetes research.
• To co-culture pancreatic beta-cells and intestinal L-cells to mimic endocrine interactions.
• To assess glucose-stimulated insulin and glucagon-like peptide-1 (GLP-1) secretion dynamics.

Main Methods:

• Utilized a microfluidic perfused 3D cell-culture chip.
• Co-cultured pancreatic beta-cell line (INS-1) and intestinal L-cell line (GLUTag).
• Measured dynamic release of GLP-1 and insulin at varying glucose concentrations (0.5 mM and 20 mM).

Main Results:

• The 3D co-culture model demonstrated high cell viability (>95%) and aggregate formation.
• Both cell lines showed increased GLP-1 and insulin production in response to glucose stimuli compared to 2D culture.
• The co-culture system exhibited enhanced insulin production and faster saturation at high glucose levels.

Conclusions:

• The developed 'endocrine system on chip' accurately models dynamic hormonal changes in a glucose-dependent manner.
• This platform is a promising tool for screening diabetes therapeutics, including GLP-1 analogues and insulin secretagogues.
• The 3D co-culture approach offers a more physiologically relevant system for endocrine disease research.