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2022 Fiscal Year Final Research Report

Role of mitophagy in cellular senescence

Research Project

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Project/Area Number 20K18655
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionFukuoka Dental College

Principal Investigator

YAMAGUCHI MASAHIRO  福岡歯科大学, 口腔歯学部, 講師 (80824268)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywords細胞老化 / オートファゴソーム / オートファジー / マイトファジー / SA-beta-Gal / 擦過上皮細胞 / LC3 / Beclin1
Outline of Final Research Achievements

We investigated the interaction between cellular senescence and autophagy and mitophagy in epithelial cells. For epithelial cells, in vivo cytology was applied to immunocytological examination using epithelial cell scrapings from volunteers. SA-beta-Gal expression, a senescence marker, was found to be more positive in scraped epithelial cells from the aged group than from the young group. Positive epithelial cells were found to be expressed in parakeratotic cells. In addition, in the positive cells, intracellular accumulation was observed as a phase-contrast finding, and it was confirmed that these morphological changes together with SA-beta-Gal expression could serve as criteria for cell senescence.

Free Research Field

高齢者歯科学

Academic Significance and Societal Importance of the Research Achievements

細胞老化の誘導へのオートファジーおよびマイトファジーがどのように関与するかを検討する予備段階として、上皮細胞における細胞老化とオートファジーのマーカー発現とその意義を主体として検討した。検討材料としては、in vivo検索としての各年齢層殻の擦過上皮細胞およびin vitro検索としてヒト・ケラチノサイトであるHaCaT培養細胞を用いて各種マーカーの染色を行った。その結果、細胞免疫化学的検索ではあるが、上皮細胞への細胞老化誘導はオートファジーにより制御を受けている可能性を示唆する結論が得られた。

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Published: 2024-01-30  

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