Federal Project Grant Award Summary

The National Institute of Mental Health (NIMH) awarded $427,625 to the University of Washington on June 10, 2026, under the Mental Health Research Grants program (CFDA 93.242) to support a two-year research project through June 9, 2028. The grant funds basic neuroscience research investigating the molecular mechanisms underlying differential regulation of dopamine neuron subpopulations in the ventral tegmental area (VTA). The project combines slice electrophysiology recordings with patch-sequencing (patch-seq) analysis to directly correlate gene expression patterns with physiological properties of distinct VTA dopamine neuron populations, enabling identification of candidate genes driving functional variability between subpopulations.

The primary research deliverables include mechanistic insights into ion channel gene function, with specific focus on validating the roles of potassium channel genes KCNH5 and KCNH7 in regulating action potential firing properties. The investigative team will employ a novel dual-recombinase CRISPR/Cas9 system for targeted gene mutagenesis in intersectional neuronal populations to test gene function with precision previously unavailable. Expected outputs include peer-reviewed publications, experimental datasets, and foundational knowledge regarding the genetic and physiological basis of dopamine neuron heterogeneity—research outcomes with potential implications for understanding reward processing, motivation, and neurobiological mechanisms relevant to mental health disorders.