OPA1 neural protein loss drives high-fat overeating in mice, study finds

A Japanese research group has published findings from a mouse model study describing how the loss of a protein in the brain can impact weight gain by stimulating cravings that lead to overeating. Specifically, scientists looked at the role of a mitochondrial fusion protein called optic atrophy-1 (OPA1) in maintaining metabolic health. OPA1 is found in the brain’s Melanocortin 4 Receptor (MC4R) neurons in the hypothalamic region, which help modulate mitochondrial functions and energy metabolism. According to the study, its expression increased in response to mice fed a high-fat diet, pointing to its role in sustaining metabolic balance.