Molecular and imaging biomarker responses to brain mutant HTT lowering in a mouse model of Huntington disease.

ABSTRACT: Therapies targeting mutant huntingtin (mHTT) reduction in the brain hold promise as disease-modifying treatments for Huntington disease (HD), necessitating biomarkers that accurately reflect treatment response. We evaluated candidate molecular and imaging biomarkers after mHTT reduction in YAC128 HD mice, with equal numbers of males and females per group. At 6 months of age, YAC128 mice received unilateral intracerebroventricular injections of saline or mHTT-lowering antisense oligonucleotide (HTT ASO). Plasma neurofilament light chain (NEFL) and glial fibrillary acidic protein (GFAP) were measured longitudinally from 6 to 12 months. Structural MRI was performed at 6, 9, and 12 months. At study endpoint, we quantified mHTT target engagement in the brain and performed striatal RNA sequencin

SUBMITTER: Caron NS 

PROVIDER: S-EPMC12489819 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature