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Updated: Apr 19, 2026

A Standardized Pig to Macaque Heterotopic Heart Xenotransplantation Model
Published on: November 4, 2025
Current progress in xenotransplantation and organ bioengineering.
Sebastian G Michel1, Maria Lucia L Madariaga2, Vincenzo Villani3
1Transplantation Biology Research Center, Massachusetts General Hospital, Building 149, 13th Street, Charlestown, Boston, MA 02114, USA; Department of Cardiac Surgery, Ludwig-Maximilians-Universität München, Munich D-81377, Germany.
The critical shortage of donor organs for transplantation leads to daily deaths. Xenotransplantation and bioengineering offer promising solutions to increase organ availability.
Area of Science:
- Transplantation science
- Regenerative medicine
- Biotechnology
Background:
- Organ transplantation is a life-saving treatment for end-stage organ failure.
- A significant shortage of available donor organs exists, leading to high mortality rates for patients on waiting lists.
- Current organ supply cannot meet the demand for transplantation.
Purpose of the Study:
- To review the progress and challenges in xenotransplantation and bioengineering for organ supply.
- To explore the potential of these fields in addressing the organ shortage crisis.
- To identify how lessons learned from each field can be applied to develop new organ sources.
Main Methods:
- Historical review of xenotransplantation development.
- Analysis of current bioengineering approaches for organ creation.
- Discussion of limitations and future directions in both fields.
Main Results:
- Xenotransplantation has advanced but faces immunological and ethical hurdles.
- Bioengineering shows potential for creating organs but requires further development.
- Integration of xenotransplantation and bioengineering may yield novel solutions.
Conclusions:
- Both xenotransplantation and bioengineering are crucial for increasing organ availability.
- Overcoming challenges in these fields can lead to the development of xenografts, bioengineered organs, and bioengineered xeno-organs.
- Interdisciplinary approaches are key to solving the global organ shortage for transplantation.
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