Intravital Imaging Allows Organ-Specific Insights Into Immune Functions

Area of Science:

• Immunology
• Cell Biology
• Biomedical Imaging

Background:

• Leukocytes, particularly neutrophils and macrophages, are vital innate immune cells essential for homeostasis and host defense.
• Their rapid response to pathogens is critical for survival.
• Recent advancements in imaging technologies are revolutionizing our understanding of these cells.

Purpose of the Study:

• To review the contributions of novel imaging techniques to understanding neutrophil and macrophage functions.
• To explore innate immune cell behavior under homeostatic and infectious conditions.
• To discuss imaging applications across various organs and identify current limitations.

Main Methods:

• Intravital spinning-disc microscopy
• 2-photon microscopy
• Tissue clearing techniques
• 3D-imaging approaches

Main Results:

• Novel imaging provides unprecedented insights into innate immune cell dynamics and interactions.
• These techniques allow visualization of neutrophils and macrophages in their native microenvironments.
• Applications span across multiple organs, including the liver, kidney, heart, lung, and peritoneal cavity.

Conclusions:

• Advanced imaging modalities significantly enhance our comprehension of innate immune cell functions.
• These methods are crucial for studying immune responses during homeostasis and infection.
• Further development is needed to overcome existing limitations in imaging techniques.