A protein identified as cyclin D-binding myb-like transcription factor 1 (DMTF1) has been shown to restore the regenerative capacity of aging brain cells, according to research published this week in Science Advances. The discovery, made by scientists at the Yong Loo Lin School of Medicine at the National University of Singapore (NUS), offers a potential pathway for therapies aimed at slowing or reversing cognitive decline.
Researchers found that boosting DMTF1 levels can revitalize neural stem cells, even after age-related damage has accumulated. Neural stem cells are crucial for generating new neurons, which are essential for learning and memory. As individuals age, these cells lose their ability to renew, contributing to cognitive impairment. Assistant Professor Ong Sek Tong Derrick, who led the study, explained that impaired neural stem cell regeneration is a key factor in neurological aging. “Inadequate neural stem cell regeneration inhibits the formation of new cells needed to support learning and memory functions,” he said.
The study focused on transcription factors – proteins that regulate gene expression – and their role in maintaining neural stem cell activity. Researchers analyzed gene expression related to DMTF1 to understand its influence on these cells. The team’s investigation revealed that DMTF1 acts as a central regulator of neural stem cell activity in older brains. Dr. Liang Yajing, first author of the study, and her colleagues sought to understand the biological changes that weaken neural stem cells over time, hoping to identify therapeutic targets.
The findings align with a growing body of research exploring the mechanisms of brain aging and potential interventions. Scientists have previously observed that factors like diet and exercise can positively influence brain health, but the search for targeted therapies to rejuvenate aging brain cells continues. A parallel line of inquiry, as reported by SciTechDaily, suggests that aging fundamentally rewrites the brain’s protein code, and identifying the “switch” to control this process is a major focus of current research.
The NUS team’s work builds on the understanding that the decline in neural stem cell activity is linked to wear and tear on telomeres, the protective caps on the ends of DNA. As cells divide, telomeres shorten, impairing their ability to grow and divide, ultimately leading to cell death. The identification of DMTF1 offers a potential way to counteract this process and restore the function of weary neural stem cells. ScienceAlert reported that the research involved both analysis of human neural stem cells in the lab and experiments using mouse models.
While the discovery of DMTF1 represents a significant step forward, researchers caution that translating these findings into effective treatments remains a long-term prospect. The National University of Singapore has not announced any immediate plans for clinical trials, and further research is needed to fully understand the protein’s function and potential side effects.
