• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2023 Fiscal Year Final Research Report

Elucidation of the mechanism of hearing loss associated with distal tubular acidosis

Research Project

  • PDF
Project/Area Number 21K07756
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionOita University

Principal Investigator

Ikeuchi Mayo  大分大学, 医学部, 医員 (80865668)

Co-Investigator(Kenkyū-buntansha) 井上 真紀  大分大学, 医学部, 講師 (20726913)
清田 今日子  大分大学, 医学部, 医員 (30774492)
Project Period (FY) 2021-04-01 – 2024-03-31
Keywords遠位尿細管性アシドーシス / 難聴 / ゼブラフィッシュ / リソソーム / pH
Outline of Final Research Achievements

We analyzed the pathogenesis of sensorineural hearing loss associated with dRTA caused by the atp6v1b1 variant, one of the genes responsible for hereditary distal tubular acidosis. Ortholog gene, atp6v1ba-deficient zebrafish inner ear hair cells showed brittle cilia and autophagosome formation. LC3B, a marker of autophagosome formation, was strongly stained in hair cells. Lysosomal staining using the fluorescent dyes indicated a link between autophagy failure and hair cell degeneration due to pH imbalance inside lysosomes. Our research provided new insights into the understanding of this pathology and its treatment.

Free Research Field

小児科学

Academic Significance and Societal Importance of the Research Achievements

ゼブラフィッシュモデルは、その透明性により内耳が直接可視化可能であり、創薬のin vivoスクリーニングにも十分な実績を持つことから、本疾患モデルは将来の新たな治療法開発にも貢献する可能性がある。
本研究において作製したatp6v1ba欠損ゼブラフィッシュモデルやpHluorin2トランスジェニックモデルは、アシドーシスに関連した聴覚障害の疾患メカニズムや潜在的治療法をさらに研究するための貴重なツールとなりうる。

URL: 

Published: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi