Researchers at the University of Colorado Boulder have demonstrated that a single injected drug-delivery system can reverse osteoarthritis in animals within weeks. The team, led by chemical and biological engineer Stephanie Bryant, reported success in early animal experiments. They aim to advance to human trials after further safety testing.
A team from the University of Colorado Boulder has developed an experimental slow-release drug-delivery system that, when injected into damaged joints, prompts the body's cartilage and bone cells to repair osteoarthritis effectively in just weeks, according to ongoing animal experiments not yet peer-reviewed. Stephanie Bryant stated, 'In two years, we were able to go from a moonshot idea to developing these therapies to demonstrating that they reverse osteoarthritis in animals.' The researchers are now preparing for phase two, which will assess safety and toxicology to pave the way for human clinical trials within the next 18 months, pending results from additional animal studies. Bryant's goal is clear: 'not just to treat pain and halt progression, but to end this disease.' Currently, osteoarthritis—a condition affecting hundreds of millions worldwide with no cure—leaves patients managing pain or undergoing joint replacements. Evalina Burger, professor and chair of the Department of Orthopedics at UC Anschutz, noted, 'At the moment, the options for many patients are either a massive, expensive surgery or nothing. There's not a lot in between.' The team is also working on an injectable implant to recruit cells for cartilage repair, offering options for different stages of the disease. Funding comes from the Novel Innovations for Tissue Regeneration in Osteoarthritis (NITRO) program under ARPA-H, part of the US Department of Health and Human Services. ARPA-H Director Alicia Jackson said, 'Through ARPA-H, we are driving toward a future where people don't have to wake up in pain, give up activities they love, or face major surgeries and repeat joint replacements – so they can stay active, independent, and healthy for longer.'
