An Antegrade Perfusion Method for Cardiomyocyte Isolation from Mice.

Area of Science:

• Cardiovascular Biology
• Cell Isolation Techniques
• Mouse Models

Background:

• Isolating viable individual cardiomyocytes from mouse hearts is critical for basic research.
• Traditional methods like Langendorff retrograde perfusion require high skill for small mouse hearts.
• Existing antegrade perfusion methods offer alternatives but can be improved.

Purpose of the Study:

• To present a refined antegrade perfusion protocol for isolating individual heart cells from adult mice.
• To provide a detailed, accessible method for researchers working with mouse cardiac tissue.
• To enable simultaneous isolation of various cardiac cell types.

Main Methods:

• Utilized an improved antegrade perfusion technique on excised adult mouse hearts (8–108 weeks old).
• Employed an infusion pump for perfusate injection near the left ventricle apex with a clamped aorta.
• Performed all procedures under microscopic visualization on a heated mat for real-time monitoring.

Main Results:

• Successfully isolated viable ventricular myocytes, atrial myocytes, and fibroblasts from single adult mouse hearts.
• The improved antegrade perfusion method demonstrated effectiveness for adult mouse hearts.
• The protocol allows for simultaneous isolation of multiple cardiac cell types.

Conclusions:

• The described improved antegrade perfusion protocol offers an effective method for isolating individual cardiomyocytes and fibroblasts from adult mice.
• This technique simplifies the process compared to traditional methods, enhancing accessibility for researchers.
• The ability to isolate multiple cell types simultaneously from one heart increases experimental efficiency.