Mouse kidney transplantation model: Three novel methods.

Area of Science:

• Transplantation Immunology
• Surgical Innovation
• Preclinical Research Models

Background:

• Mouse kidney transplantation is challenging due to surgical difficulty and low success rates.
• Existing models limit research in transplantation immunology.
• Novel techniques are needed to improve mouse kidney transplantation models.

Purpose of the Study:

• To modify and develop novel surgical techniques for mouse kidney transplantation.
• To establish and compare three distinct mouse kidney transplantation models.
• To provide a crucial model for transplantation immunology research.

Main Methods:

• Established three surgical models: abdominal suture, abdominal cuff (orthotopic), and cervical cuff (ectopic) kidney transplantation.
• Utilized 57 pairs of BALB/c or C57BL/6 mice (8-12 weeks old).
• Compared surgical times, complications, and early postoperative pathological findings.

Main Results:

• All three models were successfully established with no significant difference in warm ischemia time.
• The abdominal suture technique demonstrated the shortest donor and recipient operation times.
• The cervical cuff technique showed fewer intraoperative complications but a higher incidence of ureteral issues; short-term renal function and acute rejection were comparable across all models.

Conclusions:

• All three surgical methods successfully establish mouse kidney transplantation models with comparable short-term outcomes.
• Modified abdominal suture and cuff techniques offer distinct advantages for research applications.
• The novel cervical cuff technique provides a simpler, less traumatic option for specific studies, though long-term validation is needed.