Lymphatic Cannulation for Lymph Sampling and Molecular Delivery

Area of Science:

• Physiology
• Immunology
• Biochemistry

Background:

• Lymphatic fluid directly surrounds organ cells, unlike blood.
• Lymph composition analysis provides detailed biochemical and cellular health information.
• Lymphatic fluid is a valuable resource for biomarker discovery.

Purpose of the Study:

• To describe a protocol for cannulating mouse and rat lymphatic collectors.
• To enable comprehensive 'omic' sampling and immune cell phenotyping from lymph.
• To facilitate quantitative immunological studies and monitor organ-specific biochemical changes.

Main Methods:

• Cannulation of lymphatic collectors in mice and rats.
• 'Omic' sampling of pre- and postnodal lymph from various anatomical sites.
• Immune cell phenotyping and molecular injection for trafficking studies.

Main Results:

• The described protocol allows for detailed analysis of lymphatic fluid.
• Lymphatic fluid analysis accurately reflects an organ's physiological and pathological state.
• This method supports biomarker discovery and disease monitoring.

Conclusions:

• Probing lymphatic fluid provides an accurate snapshot of organ health.
• Lymphatic fluid analysis is a powerful tool for biomarker discovery.
• This technique represents an ideal approach for liquid biopsy in organ studies.