UIC Researchers Secure $1.2M Grant to Explore Tooth Self-Repair via Dentin Phosphophoryn
Anne George, a professor at the University of Illinois Chicago (UIC) College of Dentistry, has received a $1.2 million grant from the National Institute of Dental and Craniofacial Research to study dentin phosphophoryn. This protein, found in the mineralized tissue beneath tooth enamel, may help cells survive in calcium-rich environments and preserve regenerative capacity. The research aims to understand how this protein supports autophagy, a cellular cleanup process, to potentially enable damaged teeth to repair themselves rather than requiring synthetic replacements.
Key points
- Anne George, a professor in the Department of Oral Biology at UIC, leads the new research project funded by a $1.2 million NIH grant.
- The study focuses on dentin phosphophoryn, described as the most acidic protein in nature, which aids in the calcification of the protein matrix to form dentin.
- Researchers are investigating how this protein helps odontoblasts and adult dental pulp stem cells survive in the high-calcium environment of teeth.
- The project examines the role of dentin phosphophoryn in autophagy, a process that removes damaged cellular components, which is crucial for protecting cells during inflammation and injury.
- The ultimate goal is to use these proteins in scaffolds to regrow dentin, creating a living matrix that stops cavity propagation and retains tooth function, unlike current treatments that remove tissue and apply synthetic caps.
Background
This research builds on nearly three decades of George's work at UIC, including studies on biomineralization and proteins like dentin matrix protein 1. It follows recent developments in dental care, such as the FDA approval pathway for silver diamine fluoride, which arrests decay without drilling. While current treatments focus on removing defects, this new approach seeks to leverage natural biological mechanisms for regeneration.
Why it matters
Current dental treatments often involve removing healthy tissue and replacing it with synthetic materials, which can compromise the tooth's living structure. Understanding how natural proteins like dentin phosphophoryn support cell survival and regeneration could lead to therapies that allow teeth to heal themselves, preserving function and reducing the need for invasive procedures.
What to watch
George and her team will combine studies in human dental pulp stem cells with animal models to investigate molecular pathways controlling autophagy and tissue regeneration. The findings could pave the way for regenerative dental treatments that use protein scaffolds to regrow dentin.
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