A new Nature Biotechnology paper describes the process of engineering a lab-grown esophagus that can safely replace a full section of the native organ and restore normal functions, including swallowing, in a growing animal without requiring immunosuppression. The paper, which is titled “Functional integration of an autologous engineered esophagus in a large-animal model,” describes “an integrated strategy to engineer a 2.5-cm esophageal segment by microinjecting autologous pericyte-like myogenic precursors and fibroblasts in a decellularized porcine scaffold to repair circumferential defects in 10-kg minipigs … modeling pediatric use.” According to scientists from Great Ormond Street Hospital (GOSH) and University College London (UCL) who led the study, their work demonstrates for the first time that a donor pig esophagus can be decellularized, repopulated with the recipient pig’s own cells and implanted in a growing, large-animal model. Other studies have previously shown parts of this technology but this marks the first time that the full process has been completed with this level of success, they said. Importantly, this development is a major leap towards creating personalized regenerative treatments for children born with life threatening esophageal conditions. Specifically, it could benefit children born with a condition called long-gap esophageal atresia (LGOA). People with this condition have an interrupted esophagus with a wide gap between the upper and lower segments. Patients cannot survive without surgery, but the gap is often too large to close immediately after birth. As a work around, babies with LGOA typically have a feeding tube placed directly into their stomach, so…
