Intravital Microscopy to Visualize Murine Small Intestinal Intraepithelial Lymphocyte Migration

Area of Science:

• Immunology
• Cell Biology
• Gastroenterology

Background:

• Intraepithelial lymphocytes (IELs) are key immune cells in the gut lining.
• γδ T-cell receptor expressing IELs monitor the intestinal epithelium.
• Understanding IEL behavior is vital for host defense and mucosal barrier integrity.

Purpose of the Study:

• To present protocols for real-time visualization of small intestinal IEL motility.
• To enable quantification of IEL migration and interactions with enterocytes.
• To provide a framework for studying mucosal immune dynamics.

Main Methods:

• Utilizing fluorescent reporter-transgenic mice and fluorophore-conjugated antibodies.
• Employing spinning-disk confocal microscopy for intravital imaging.
• Applying Imaris software for 4D image analysis of IEL migration.

Main Results:

• Established protocols for visualizing IEL motility in vivo.
• Developed methods for quantifying IEL-epithelial cell interactions.
• Provided a basis for analyzing immune cell dynamics in the gut.

Conclusions:

• Intravital imaging offers powerful insights into IEL behavior.
• These methods facilitate the study of immune cell dynamics under various conditions.
• The protocols support research into intestinal immunity and disease.