Key facts
- Rice University researchers developed a 'living bandage' for wound healing.
- The patch contains engineered cells programmed to secrete healing cytokines.
- A protective material shields cells from the immune system while allowing nutrient exchange.
- Lab tests on rodents and pigs showed accelerated wound healing.
- The technology is customizable and may be controlled electronically in the future.
Scientists at Rice University have developed a novel 'living bandage' designed to significantly accelerate wound healing. This innovative patch functions as a continuous, localized delivery system for therapeutic proteins, addressing the challenges of treating chronic wounds where traditional methods often fall short. The body naturally uses cytokines for inflammation and healing, but these fragile proteins are difficult to deliver effectively with current treatments. The research team engineered cells to produce and secrete three specific cytokines: IL-10, IL-12 and Transforming Growth Factor-beta. These cells are encapsulated within a protective material that allows nutrients and therapeutic proteins to pass through while preventing the body's immune system from attacking the engineered cells. A special hydrogel helps the patch integrate with the wound. In laboratory tests conducted on rodents and pigs, the living bandage demonstrated success in accelerating wound healing by activating key biological pathways involved in tissue repair. Genetic analysis confirmed the upregulation of genes associated with tissue regeneration and immune modulation. The platform is designed to be customizable, allowing for the production of different combinations of proteins and growth factors tailored to individual patient needs. Future developments may include integration with electronic components for real-time control of cytokine secretion, such as through optogenetic methods. The technology is still in its early stages and has not yet been tested on human patients, with further research required for human application. The study was published in Nature Biomedical Engineering.