The study aims to understand how loss of ZPLD1 affects the behaviour of homozygous Zpld1 (em1/IMPC)J mice (Zpld1 -/- mice) and the structure of the cupula. Evaluation of 2-minute open-field, swim, and tail-suspension tests indicated open-field testing was optimal for detecting mutants....
No actionable change — this is preclinical mouse-model research identifying a novel vestibular protein; findings are too early to influence clinical diagnosis or management of balance disorders.
Identifying ZPLD1 as a structural scaffolding protein for the cupula advances the molecular understanding of vestibular function and opens a potential pathway for investigating genetic causes of balance disorders in humans.
- 01ZPLD1 knockout mice displayed head-turning, hyperactivity, and low-penetrance circling — hallmarks of vestibular dysfunction.
- 02ZPLD1 protein normally scaffolds the cupula (a jelly structure in the inner ear) to the roof of the ampulla.
- 03Loss of ZPLD1 disrupts cupula attachment, suggesting a structural role in semicircular canal mechanosensing.
- 04Circling behavior showed low penetrance, indicating variable expressivity of the vestibular phenotype.
- 05Findings are from an animal model; relevance to human vestibular disorders is not yet established.
ZPLD1 scaffolds the cupula to the roof of the ampulla in the inner ear.
studysupportedLoss of ZPLD1 in mice causes vestibular dysfunction evidenced by head-turning, hyperactivity, and circling behaviour.
studysupported- PMID
- 42287969
- DOI
- 10.1016/j.heares.2026.109702.
- Journal
- Hearing Research
- Publication type
- research_article
- Evidence level
- na
- Population
- ZPLD1 knockout mice
- Intervention
- Genetic knockout of ZPLD1 protein
- Comparator
- Wild-type mice
Primary outcomes
Vestibular behavioural phenotype (head-turning, hyperactivity, circling); Structural integrity of cupula-ampulla scaffold