CHCHD2 mutant mice link mitochondrial deficits to PD pathophysiology.

ABSTRACT: Mitochondrial dysfunction is a hallmark of Parkinson's disease (PD), but the mechanisms by which it drives autosomal dominant and idiopathic forms of PD remain unclear. To investigate this, we generated and performed a comprehensive phenotypic analysis of a knock-in mouse model carrying the T61I mutation in the mitochondrial protein CHCHD2 (coiled-coil-helix-coiled-coil-helix domain-containing 2), which causes late-onset symptoms indistinguishable from idiopathic PD. We observed pronounced mitochondrial disruption in substantia nigra dopaminergic neurons, including distorted ultrastructure and CHCHD2 aggregation, as well as disrupted mitochondrial protein-protein interactions in brain lysates. These abnormalities were associated with a whole-body metabolic shift toward glycolysis, elevated

SUBMITTER: Liao SC 

PROVIDER: S-EPMC12617525 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature