Scientists unveil 'living bandage' that could dramatically speed wound healing

Researchers at Rice University in Texas have created a 'living bandage' designed to revolutionize wound healing by continuously delivering therapeutic proteins directly to injuries. The patch uses engineered cells programmed to secrete three key cytokines—IL-10, IL-12, and Transforming Growth Factor-beta—encapsulated in a protective hydrogel that shields the cells from immune attacks while allowing nutrients and proteins to pass through. The technology addresses a major challenge in treating chronic wounds: traditional methods like ointments or injections fail because proteins degrade too quickly or wash away. By maintaining a steady supply of cytokines at the wound site, the patch activates the body’s natural tissue repair processes, as confirmed by genetic analysis in lab tests on rodents and pigs. Professor Omid Veiseh, lead researcher, noted that consistent cytokine delivery supports critical biological pathways for regeneration and immune modulation. The patch is fully customizable, allowing researchers to adjust cytokine combinations based on individual patient needs. Study co-author Christian Schreib, Ph.D., highlighted the potential for future advancements, including optogenetic control to regulate cytokine secretion in real time using light. Early trials show promising results, though the technology remains in development and has not yet been tested in humans. The hydrogel component ensures the patch integrates naturally with the wound, while the engineered cells operate like a mini factory, producing healing proteins on demand. Veiseh emphasized that the approach could provide more precise control over the healing process than existing treatments. Future work will focus on expanding the platform’s flexibility, including integrating electronic components for dynamic regulation of cell activity.