Understanding immunity in a tissue-centric context: Combining novel imaging methods and mathematics to extract new...

Area of Science:

• Immunology
• Cell Biology
• Microscopy

Background:

• The immune system must respond rapidly to diverse pathogens at various body sites and times.
• Understanding immune system organization is crucial for effective host defense.

Purpose of the Study:

• To explore how immune cells are organized spatially and functionally to facilitate timely host defense.
• To investigate the molecular mechanisms underlying intercellular communication in immune responses.
• To summarize advancements in imaging tools for studying immune system organization and function.

Main Methods:

• Utilized advanced and static dynamic imaging methods over two decades.
• Employed multiplex analyses in single tissue sections and 3D tissue volumes.
• Applied new computational methods to in vivo imaging data for quantitative analysis of cell trafficking and signaling.

Main Results:

• Discovered that suborgan spatial pre-positioning of distinct immune cells promotes efficient pathogen sensing and interaction.
• Identified pre-organization as a barrier preventing pathogen spread from tissues to circulation.
• Demonstrated effective intercellular communication mechanisms among rapidly moving immune cells.

Conclusions:

• Immune system organization, including cell pre-positioning and communication, is key to timely and effective host defense.
• Advancements in multiplex imaging and computational analysis provide quantitative in vivo insights.
• Future developments in imaging technologies will further elucidate immune system operations in health and disease.