Compact fluidic system for functional assessment of pancreatic islets

Area of Science:

• Biomedical Engineering
• Endocrinology
• Regenerative Medicine

Background:

• Type I diabetes management often involves pancreatic islet transplantation.
• Assessing islet function ex vivo is crucial for successful transplantation outcomes.
• Existing methods for islet function assessment can be complex and costly.

Purpose of the Study:

• To develop and validate a compact, user-friendly fluidic system for ex vivo assessment of pancreatic islet functionality.
• To enable efficient and cost-effective evaluation of islets prior to transplantation.

Main Methods:

• A novel fluidic system incorporating a micromesh sheet-embedded chip was designed.
• The chip featured super-hydrophilized surfaces for gravity-driven fluid flow.
• Mouse pancreatic islets were utilized for dynamic glucose-stimulated insulin secretion tests.

Main Results:

• The fluidic system facilitated easy loading and clear microscopic observation of islets.
• Islets remained stable on the micromesh sheet during perfusion without hydraulic damage.
• The system accurately analyzed insulin secretion patterns in response to varying glucose levels.

Conclusions:

• The developed fluidic system offers a simple, cost-effective, and efficient method for assessing pancreatic islet function ex vivo.
• This technology has the potential to improve the efficiency of islet transplantation for type I diabetes treatment.