New Research Reveals How AMPK Enzyme Fuels Exercise and Holds Promise for Diabetes Treatment
Researchers have long understood the role of adenosine monophosphate-activated protein kinase (AMPK), an enzyme crucial for regulating energy in muscle and exercise performance. Now, a new study from Virginia Tech scientists at the Fralin Biomedical Research Institute at VTC has pinpointed the precise mechanism by which AMPK functions, potentially opening doors for new diabetes treatments.
Unlocking the Secrets of AMPK
The study, published on February 25, 2026, in Science Advances, focused on the triggering event that activates AMPK, a master energy sensor responding to the high energy demands of exercise. Researchers confirmed that phosphorylation of AMPK at a single amino acid regulates the quantity and activity of mitochondria – the powerhouses of cells. However, the research similarly revealed a broader range of AMPK’s regulatory influence, extending to muscle contraction and sugar metabolism.
How the Study Worked
The Virginia Tech team utilized gene-editing technology to disable a key cellular signaling site believed to be critical for AMPK’s response to increased energy demand. This was achieved without disrupting the AMPK protein structure or its interacting proteins. Mice with this signaling site deactivated exhibited a significantly reduced exercise capacity, running only about one-third the distance of control mice. This confirmed the vital role of the signaling site in the process.
Implications for Diabetes Treatment
Researchers, including lead author Zhen Yan, a professor with Virginia Tech’s Fralin Biomedical Research Institute at VTC and director of the Center for Exercise Medicine Research, analyzed proteins in the skeletal muscle of mice and found significant overlap with data from human diabetic patients. This suggests that impaired AMPK enzyme function may contribute to the development of diabetes.
“That suggests that if we target AMPK with drug interventions, we may be able to help diabetic patients,” said Yan. 1
Future Research Directions
While this study focused on the effects of AMPK during exercise, Yan’s team plans to further investigate its role in exercise adaptation – how muscles change in response to exercise to improve fitness. This ongoing research aims to deepen our understanding of how exercise influences metabolic health and potentially lead to new therapeutic strategies.
About the Fralin Biomedical Research Institute at VTC
The Fralin Biomedical Research Institute at VTC, part of Virginia Tech, is dedicated to making transformative scientific advances to address human and animal health and disease. 2 Recent investments, including a $26.5 million allocation for the Virginia Tech Patient Research Center at VTC, are bolstering the institute’s capacity for clinical research and innovation. 3
Publication: Ampk alpha2 T172 Activation Dictates Exercise Performance and Energy Transduction in Skeletal Muscle, Science Advances (2026). DOI: 10.1126/sciadv.aeb3338
- Cell signaling step sharpens understanding of how the body responds to exercise’s energy demands, Medical Xpress, February 25, 2026.
- Fralin Biomedical Research Institute at VTC, Virginia Tech.
- Friedlander: A smart investment for Southwest Virginia, Cardinal News, February 20, 2026.