Personal profile
Research interests
The brain is the most energy consuming organ of the body and is highly sensitive to energetic perturbations. However, regulatory mechanism that modulate neuronal metabolism are poorly understood. In firing nerve terminals, both glycolysis and oxidative phosphorylation (OxPhos) are rapidly upregulated to meet the energetic requirements of synaptic activity1. While this upregulation represents transient modulation of neuronal metabolism, it is not clear how neurons adapt to chronic changes in energetic burden that also occur in neurodegenerative diseases such as Alzheimer’s disease (AD). The research in my lab will be focused on uncovering novel regulators of glycolytic and mitochondrial metabolism at the synapse and their role in the pathology of Alzheimer’s disease.
Available to Mentor:
- PhD Students
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Collaborations and top research areas from the last five years
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Ketogenic diet dampens excitatory neurotransmission by shrinking synaptic vesicle pools
Stunault, M. I., Deng, P. Y., Yadav, A., Periandri, E. M., de Luna Vitorino, F. N., Thomsen, M. B., Sponagel, J., Barfield, A. J., Ponce, R. J., Foroughi, L., Garcia, B. A., Egervari, G., Klyachko, V. A. & Ashrafi, G., Feb 24 2026, In: Cell Reports. 45, 2, 116945.Research output: Contribution to journal › Article › peer-review
Open Access1 Link opens in a new tab Scopus citations -
Introduction to the Neurophotonics Special Issue “Imaging Brain Metabolism and Neuroenergetics”
Vazquez, A. L., Ashrafi, G. & Kara, P., Jun 1 2025, In: Neurophotonics. 12, S22801.Research output: Contribution to journal › Review article › peer-review
Open Access -
Metabolic regulation of single synaptic vesicle exo- and endocytosis in hippocampal synapses
Myeong, J., Stunault, M. I., Klyachko, V. A. & Ashrafi, G., May 28 2024, In: Cell Reports. 43, 5, 114218.Research output: Contribution to journal › Article › peer-review
Open Access17 Link opens in a new tab Scopus citations -
Mitochondrial pyruvate transport regulates presynaptic metabolism and neurotransmission
Tiwari, A., Myeong, J., Hashemiaghdam, A., Stunault, M. I., Zhang, H., Niu, X., Laramie, M. A., Sponagel, J., Shriver, L. P., Patti, G. J., Klyachko, V. A. & Ashrafi, G., Nov 15 2024, In: Science Advances. 10, 46, eadp7423.Research output: Contribution to journal › Article › peer-review
Open Access11 Link opens in a new tab Scopus citations -
Sirtuin3 ensures the metabolic plasticity of neurotransmission during glucose deprivation
Tiwari, A., Hashemiaghdam, A., Laramie, M. A., Maschi, D., Haddad, T., Stunault, M. I., Bergom, C., Javaheri, A., Klyachko, V. & Ashrafi, G., Jan 1 2024, In: Journal of Cell Biology. 223, 1, e202305048.Research output: Contribution to journal › Article › peer-review
Open Access6 Link opens in a new tab Scopus citations