简介：
Overview
This protocol describes a method for measuring epithelial barrier permeability in human intestinal organoids in real-time. Utilizing fluorescent and live cell microscopy, this technique allows researchers to visualize and quantify changes in permeability following pharmacologic treatments.
Key Study Components
Area of Science
- Gastroenterology
- Cell Biology
- Microscopy Techniques
Background
- Epithelial barrier integrity is crucial for gut health.
- Disruption can lead to various gastrointestinal diseases.
- Real-time measurement techniques enhance understanding of permeability changes.
- Human intestinal organoids provide a relevant model for studying epithelial function.
Purpose of Study
- To measure the effects of toxins and pharmacologic treatments on epithelial barrier permeability.
- To visualize changes in permeability in real-time.
- To establish a reliable method for future gastroenterological research.
Methods Used
- Microinjection of FITC-dextran into human intestinal organoids.
- Live imaging to monitor fluorescent signal changes over time.
- Quantitative analysis of fluorescent intensity to assess permeability.
- Use of controls to validate experimental conditions.
Main Results
- Human intestinal organoids retained fluorescent signal when treated with PBS.
- Significant decrease in fluorescence observed with TcdA and EGTA treatments.
- Quantitative data generated showing relative changes in permeability.
- Technique can be performed efficiently within 30 minutes to one hour.
Conclusions
- This method provides a valuable tool for studying epithelial barrier function.
- Real-time imaging enhances understanding of permeability dynamics.
- Future applications may include testing various pharmacologic agents.
What is the main goal of this protocol?
The main goal is to measure epithelial barrier permeability in human intestinal organoids over time.
How does this method benefit gastroenterological research?
It allows for real-time visualization and quantification of permeability changes due to various treatments.
What are the key components used in this method?
Key components include human intestinal organoids, FITC-dextran, and live cell microscopy.
What controls are used in the experiments?
Controls include PBS vehicle alone and EGTA as a positive control.
How long does the procedure take?
The procedure can be completed in approximately 30 minutes to one hour.
What are the implications of the results?
The results can inform on how various agents affect epithelial barrier integrity, which is crucial for gut health.
繁體中文
