microRNA-33 controls hunger signaling in hypothalamic AgRP neurons

Nathan L. Price, Pablo Fernández-Tussy, Luis Varela, Magdalena P. Cardelo, Marya Shanabrough, Binod Aryal, Rafael Cabo, Yajaira Suárez, Tamas L. Horvath () and Carlos Fernández-Hernando ()
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Nathan L. Price: Yale University School of Medicine
Pablo Fernández-Tussy: Yale University School of Medicine
Luis Varela: Yale University School of Medicine
Magdalena P. Cardelo: Yale University School of Medicine
Marya Shanabrough: Yale University School of Medicine
Binod Aryal: Yale University School of Medicine
Rafael Cabo: Translational Gerontology Branch, National Institute on Aging, National Institutes of Health
Yajaira Suárez: Yale University School of Medicine
Tamas L. Horvath: Yale University School of Medicine
Carlos Fernández-Hernando: Yale University School of Medicine

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract AgRP neurons drive hunger, and excessive nutrient intake is the primary driver of obesity and associated metabolic disorders. While many factors impacting central regulation of feeding behavior have been established, the role of microRNAs in this process is poorly understood. Utilizing unique mouse models, we demonstrate that miR-33 plays a critical role in the regulation of AgRP neurons, and that loss of miR-33 leads to increased feeding, obesity, and metabolic dysfunction in mice. These effects include the regulation of multiple miR-33 target genes involved in mitochondrial biogenesis and fatty acid metabolism. Our findings elucidate a key regulatory pathway regulated by a non-coding RNA that impacts hunger by controlling multiple bioenergetic processes associated with the activation of AgRP neurons, providing alternative therapeutic approaches to modulate feeding behavior and associated metabolic diseases.

Date: 2024
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DOI: 10.1038/s41467-024-46427-0

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