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Updated: May 11, 2026
Non-invasive Imaging of Leukocyte Homing and Migration in vivo
Published on: December 5, 2010
Intravital 2-photon imaging, leukocyte trafficking, and the beating heart
Wenjun Li1, Daniel R Goldstein, Daniel Kreisel
1Department of Surgery, Washington University in St. Louis, New Haven, CT, USA.
Insights
Intravital two-photon microscopy now images beating hearts, revealing organ-specific immune cell behavior in cardiovascular disease research. This technique accurately assesses leukocyte dynamics within the heart, advancing our understanding of cardiac inflammation.
Area of Science:
- Cardiovascular Biology
- Immunology
- Microscopy
Background:
- Leukocyte trafficking is crucial in inflammation but varies by organ.
- Studying organ-specific immune responses is essential for understanding disease.
- Previous methods limited cardiac immune cell analysis.
Purpose of the Study:
- To adapt intravital two-photon microscopy for imaging beating hearts.
- To analyze leukocyte dynamics in the cardiac microenvironment.
- To understand immune cell roles in cardiovascular diseases.
Main Methods:
- Utilized intravital two-photon microscopy on beating mouse hearts.
- Accounted for mechanical forces from the heartbeat on vessels.
- Assessed dynamic leukocyte behavior in coronary vessels and myocardial tissue.
Main Results:
- Successfully imaged dynamic leukocyte behavior in beating hearts.
- Demonstrated the feasibility of studying organ-specific immune responses in the heart.
- Provided insights into leukocyte trafficking within the cardiac vasculature.
Conclusions:
- Intravital two-photon imaging of beating hearts is a viable technique.
- This method enhances understanding of immune processes in cardiovascular diseases.
- It offers a novel approach to study organ-specific inflammation in the heart.
Abstract:
Intravital two-photon microscopy allows for the analysis of single-cell dynamics within intact tissues. As it is well recognized that molecular cues that regulate leukocyte trafficking into inflammatory sites differ between various tissues, it is important to study organ-specific responses. Recently, intravital two-photon microscopy has been expanded to moving organs in the mouse such as beating hearts. Unlike previous experimental approaches to image cardiac tissue explants or isolated perfused heart preparations by two-photon microscopy, intravital imaging accounts for the mechanical force transmitted to vessels by the heartbeat and accurately assesses dynamic leukocyte behavior in the coronary vessels and myocardial tissue. Intravital two-photon imaging of beating hearts is a promising experimental tool that will help elucidate cellular and molecular immune processes that contribute to a variety of cardiovascular diseases.
