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2020 Fiscal Year Final Research Report

Regeneration of novel salivary gland tissue by stem cell-derived exosomes

Research Project

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Project/Area Number 19K19191
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionNagoya University

Principal Investigator

SAKAI KIYOSHI  名古屋大学, 医学系研究科, 助教 (80772425)

Project Period (FY) 2019-04-01 – 2021-03-31
Keywords幹細胞 / エクソソーム / 唾液腺 / 細胞老化
Outline of Final Research Achievements

In dentistry, Sjogren's syndrome, an intractable disease, is considered an autoimmune disease, a chronic condition in which tissues are unable to repair or regenerate. In our previous studies, we identified several microRNA (miRNA) in stem cell-derived exosomes that are thought to play essential roles in damaged tissues. These exosomes may be involved in stem cell " aging" by inhibiting stem cell senescence and promoting the survival of damaged cells during tissue damage.

Free Research Field

外科系歯学

Academic Significance and Societal Importance of the Research Achievements

現在、超高齢者社会において、高齢者の多くは口腔乾燥症状(ドライマウス)を示し、虫歯、細菌感染、嚥下障害さらにはQOL の低下などの口腔乾燥症を引き起こす。現在の口腔乾燥症の治療法は対症的であり、唾液腺機能障害を修復することはできない。唾液を産生する唾液腺には組織を構成する細胞を供給する源となる幹細胞が存在するが、唾液腺幹細胞については不明な点が多く、解明されていない。本研究では、内在性唾液腺幹細胞および前駆細胞に着目し、加齢に伴う唾液腺幹細胞の老化機構の解明および幹細胞由来エクソソームによる老化抑制機構を検討したことで,新たな治療法の開発につながると考えられる。

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Published: 2022-01-27  

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