{"id":486,"date":"2025-08-27T04:51:04","date_gmt":"2025-08-27T08:51:04","guid":{"rendered":"https:\/\/medmultilingua.com\/english\/?p=486"},"modified":"2025-08-27T04:57:22","modified_gmt":"2025-08-27T08:57:22","slug":"pig-to-human-lung-xenotransplantation-a-milestone-and-its-challenges","status":"publish","type":"post","link":"https:\/\/medmultilingua.com\/english\/pig-to-human-lung-xenotransplantation-a-milestone-and-its-challenges\/","title":{"rendered":"Pig-to-Human Lung Xenotransplantation: A Milestone and Its Challenges"},"content":{"rendered":"\n

By Dr. Marco V. Benavides S\u00e1nchez.<\/strong><\/p>\n\n\n\n

Lung transplantation remains the only definitive therapy for many patients with end-stage lung disease. However, the shortage of suitable human donor lungs continues to be one of the most pressing issues in modern medicine. Thousands of patients die each year while waiting for a transplant, and even those who receive a human lung often face significant complications, including graft dysfunction<\/a> and chronic rejection<\/a>. Against this backdrop, xenotransplantation\u2014the transplantation of organs from animals into humans\u2014has emerged as a potential solution.<\/p>\n\n\n\n

Recent progress in genetic engineering of pigs has revived interest in this field, as pigs are physiologically compatible in size and function with humans, and their genome can be modified to reduce immune incompatibility. On August 25, 2025, a groundbreaking report in Nature Medicine<\/strong> described the first-ever case of pig-to-human lung xenotransplantation into a brain-dead human recipient<\/a>. The work, led by Jianxing He<\/strong> and an international team of collaborators, represents a historic step forward, though many challenges remain before clinical application becomes a reality.<\/p>\n\n\n\n

This article provides a detailed review of the study, its methodology, findings, and implications for the future of lung xenotransplantation.<\/p>\n\n\n\n

The Study Design<\/strong><\/p>\n\n\n\n

The case involved transplanting a lung from a six-gene-edited pig<\/a><\/strong> into a 39-year-old brain-dead male recipient who had suffered a fatal brain hemorrhage<\/strong>. Unlike previous xenotransplantation studies that focused on kidneys or hearts, this was the first time a genetically engineered pig lung was tested in a human.<\/p>\n\n\n\n

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FIGURE 1.<\/strong> Overview of genome editing in the pig. Two ways to generate genome-edited pigs are shown: embryo injection of engineered nucleases and somatic cell nuclear transfer. In genome editing process, engineered nucleases induce a DSB at the target site. Subsequent DNA-repair by NHEJ and HDR pathways can introduce site-specific knockout and knockin, respectively, in the pig genome. Huaqiang Yang<\/a>, Zhenfang Wu<\/figcaption><\/figure>\n\n\n\n

The monitoring period lasted 216 hours (9 days)<\/strong>, during which the lung\u2019s viability and functionality were carefully assessed. Researchers were particularly interested in observing whether the human immune system would launch an immediate, catastrophic response\u2014known as hyperacute rejection<\/strong><\/a>\u2014which has historically been the major barrier to xenotransplantation.<\/p>\n\n\n\n

Immunosuppressive Protocol<\/strong><\/p>\n\n\n\n

To prevent rejection, the team employed an aggressive multi-agent immunosuppressive regimen<\/strong>, including:<\/p>\n\n\n\n