Xenotransplantation Challenges: Risks & Disadvantages Explained

Xenotransplantation (cross-species organ/tissue transplant) faces significant hurdles:

1. Immunological Rejection

Recipient immune system recognizes donor organ as foreign, triggering antibody-mediated and cell-mediated rejection.

Risk of transmitting viruses, bacteria, or parasites from donor species; some may be undetectable or novel.

Anatomical/physiological differences limit suitable donors; supply may not meet demand.

Potential emergence of novel pathogens not previously encountered by human immune systems.

Animal welfare, genetic modification ethics, and moral acceptability of using animals for human organs.

Need for robust frameworks covering risk assessment, ethical review, informed consent, and oversight.

Long-term survival, function, and late complications of xenografts remain uncertain.

Ongoing research aims to overcome these challenges, driven by the critical shortage of human donor organs.