Two modified density gradient centrifugation methods facilitate the isolation of mouse Leydig cells

Area of Science:

• Reproductive biology
• Cell biology
• Animal models

Background:

• Mouse Leydig cells (LCs) are vital for studying reproductive functions.
• High-purity LC isolation is essential for accurate research.
• Existing density gradient centrifugation methods have limitations.

Purpose of the Study:

• To develop and evaluate novel methods for isolating mouse Leydig cells (LCs).
• To compare the efficiency of modified isolation techniques against a standard method.
• To enhance the yield and purity of LCs for experimental use.

Main Methods:

• Developed two modified density gradient centrifugation methods using Percoll.
• Modified Method 1: Integrated crude LCs into 50% Percoll before centrifugation.
• Modified Method 2: Sequentially used 50% and 60% Percoll solutions.

Main Results:

• Modified Method 1 yielded 91.3% LC purity and 3.9 × 10⁵ cells, surpassing the regular method (88.4% purity, 1.7 × 10⁵ cells).
• Modified Method 2 provided a high yield (11.9 × 10⁵ cells) but lower purity (79.7%), suitable for pre-sorting applications.
• Both modified methods demonstrated improvements in yield and/or purity over the regular method.

Conclusions:

• Modified Method 1 offers a superior alternative for high-purity mouse Leydig cell isolation.
• Modified Method 2 presents a simple, high-yield option for initial LC enrichment.
• These alternative methods facilitate more efficient Leydig cell isolation in mice for research.