Scientists Create First Lab-Grown Oesophagus in Breakthrough for Children's Surgery

In a landmark achievement for regenerative medicine, scientists from University College London and Great Ormond Street Hospital have successfully created the first lab-grown oesophagus capable of replacing a full section of the organ and restoring normal function, including swallowing. The study, published in Nature Biotechnology, represents a major step toward personalized treatments for children born with life-threatening oesophageal conditions.

The process began with a donor pig oesophagus that was carefully decellularized — stripped of all its original cells while preserving the underlying tissue scaffold. This scaffold was then repopulated with the recipient animal's own muscle cells, creating a biological graft that the body would recognize as its own rather than foreign tissue.

“The study, published in Nature Biotechnology, represents a major step toward personalized treatments for children born with life-threatening oesophageal conditions.”

When implanted in a growing animal model, the lab-grown oesophagus performed remarkably well. Normal swallowing function was fully restored, and critically, no immunosuppressive drugs were needed. This is a major breakthrough, as immunosuppression carries significant risks, especially for young patients, and is typically required after organ transplantation.

The fact that immunosuppression was unnecessary stems from the innovative approach of using the recipient's own cells to repopulate the scaffold. By removing all donor cells and replacing them with the recipient's muscle cells, the researchers effectively eliminated the immune mismatch that normally triggers organ rejection.

This research addresses a real and urgent clinical need. Children born with oesophageal atresia or other severe oesophageal defects often require multiple surgeries and face lifelong complications. Current treatments involve either pulling the existing oesophagus to bridge a gap or using segments of the stomach or intestine as replacements — approaches that are imperfect and can lead to feeding difficulties, reflux, and other problems.

The team at Great Ormond Street Hospital, which is one of the world's leading children's hospitals, plans to advance this work toward human clinical trials. If successful in humans, this technology could transform the treatment landscape for thousands of children born each year with oesophageal conditions, offering them a chance at normal eating and development.