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2021 Fiscal Year Final Research Report

generation of inner ear supporting cells from human iPS cells

Research Project

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Project/Area Number 19K09914
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56050:Otorhinolaryngology-related
Research InstitutionJuntendo University

Principal Investigator

Fukunaga Ichiro  順天堂大学, 大学院医学研究科, 非常勤助教 (20746581)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywords内耳 / 遺伝性難聴 / コネキシン26 / ギャップ結合 / iPS細胞
Outline of Final Research Achievements

In this study, we generated inner ear supporting cells that construct connexin 26 (CX26) gap junctions from human iPS cells. These cells formed CX26-positive gap junction plaques in the cell-cell border. In addition, as a result of immunostaining and gene expression analysis, these cells expressed the combination of markers observed in inner ear supporting cells. In addition, cell-cell communication was observed by the Dye transfer assay, and it was clarified that it had the same functionality as inner ear supporting cells.

Free Research Field

細胞生物学

Academic Significance and Societal Importance of the Research Achievements

GJB2遺伝子を原因とする難聴は変異によって軽度~高度難聴までバリエーションがあることが報告されている。本研究課題を達成することで、GJB2遺伝子の異なる変異が聴力の病態に与える影響を解明することができ、変異の種類に対応した治療法を立てることができる。また、GJB2変異難聴だけでなく、蝸牛の非感覚領域の細胞を対象とした遺伝性難聴のIn vitroモデルを作製することが可能となる。これらのモデルは、遺伝性難聴を含めた内耳性難聴に対する病態解析、薬剤スクリーニング、細胞治療、遺伝子治療への応用が期待できる。

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Published: 2023-01-30  

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