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Elucidating the roles of cell surface glycans on epithelial stem cell aging

Research Project

Project/Area Number 20K21431
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 44:Biology at cellular to organismal levels, and related fields
Research InstitutionKumamoto University

Principal Investigator

Sada Aiko  熊本大学, 国際先端医学研究機構, 特任准教授 (80779059)

Co-Investigator(Kenkyū-buntansha) 舘野 浩章  国立研究開発法人産業技術総合研究所, 生命工学領域, 研究グループ長 (30450670)
Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords糖鎖 / 表皮幹細胞 / 皮膚老化 / レクチン / シアル酸 / 老化
Outline of Research at the Start

いつまでも若々しく、健やかに生きることは、人類の長年の願いである。近年、身体の加齢変化の一因として、分化細胞の供給源である幹細胞の機能破綻(=幹細胞の老化)が提唱されているが、その分子的実態は不明である。本研究では、研究代表者・佐田が専門とする幹細胞生物学と、分担者・舘野が独自に開発した糖鎖解析技術とを融合する多角的なアプローチにより、幹細胞老化の原因を究明し、老化診断・制御法の開発を目指す。

Outline of Final Research Achievements

Glycosylation of membrane proteins has been suggested to regulate stem cell-niche interactions and cell behavior in response to various environmental stimuli. We have previously shown that epidermal stem cells from young and old mice exhibited distinct glycan profiles, with an upregulation of glycogenes such as St6gal1, St3gal2, and Man1a. However, the functional role of these glycan changes in skin aging remains unknown. In this study, we found that overexpression of St6gal1, St3gal2, and Man1a altered the glycan profile of epidermal stem cell membrane proteins in vivo. Mice overexpressing St6gal1 and Man1a exhibited phenotypes associated with skin aging, including the impaired epidermal structure and decreased proliferation. Mass spectrometry using membrane proteins pulled down by lectins showed the binding of several core protein candidates. Thus, this study showed the functional importance of glycogenes in vivo, which provide a glycan-based strategy for controlling skin aging.

Academic Significance and Societal Importance of the Research Achievements

本研究では、糖鎖構造を高感度かつ迅速に検出することが可能なレクチン技術を用い、皮膚幹細胞の糖鎖修飾パターンの加齢変化を捉え、その機能の一端を解明することに成功した。糖鎖は、DNA、タンパク質に次ぐ「第3の生命鎖」と呼ばれ、近年注目を集めているが、少量の生体サンプルを用いた解析が困難であり理解が遅れていた。本成果は、糖鎖解析の最先端技術の開発に取り組む研究グループと協働することで生み出された成果であり、幹細胞の糖鎖を標的とした新たな老化制御や老化状態を早い段階で予測するバイオマーカーの創出へとつながることが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Book (2 results) Remarks (3 results)

  • [Int'l Joint Research] チェンマイ大学(タイ)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Glycome profiling by lectin microarray reveals dynamic glycan alterations during epidermal stem cell aging2020

    • Author(s)
      Oinam Lalhaba、Changarathil Gopakumar、Raja Erna、Ngo Yen Xuan、Tateno Hiroaki、Sada Aiko、Yanagisawa Hiromi
    • Journal Title

      Aging Cell

      Volume: 19 Issue: 8

    • DOI

      10.1111/acel.13190

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Elucidating the function of glycosylation in epidermal stem cell aging2023

    • Author(s)
      Nguyen Thi Kim Nguyen, Erna Raja, Lalhaba Oinam, Yen Xuan Ngo, Hiromi Yanagisawa, Hiroaki Tateno, Aiko Sada
    • Organizer
      International Symposium on Skin Stem Cell Dynamics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ST6GAL1 sialyltransferase, a potential player in epidermal stem cell aging2022

    • Author(s)
      Nguyen Thi Kim Nguyen, Erna Raja, Lalhaba Oinam, Yen Xuan Ngo, Hiromi Yanagisawa, Hiroaki Tateno, Aiko Sada
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Skin stem cells shuffle sugars as they age: Glycome profiling reveals dynamic glycan alterations during epidermal stem cell aging2021

    • Author(s)
      Aiko Sada
    • Organizer
      Singapore International Skin Conference 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Glycome profiling reveals dynamic glycan alterations during epidermal stem cell aging2021

    • Author(s)
      Aiko Sada
    • Organizer
      Singapore International Skin Conference 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 糖鎖から紐解く膜タンパク質の加齢変化:皮膚老化メカニズム解明に向けて2020

    • Author(s)
      佐田亜衣子
    • Organizer
      第43回分子生物学会年会
    • Related Report
      2020 Research-status Report
  • [Book] 糖鎖と幹細胞システムから紐解く皮膚老化2022

    • Author(s)
      佐田亜衣子
    • Total Pages
      5
    • Publisher
      基礎老化研究
    • Related Report
      2021 Research-status Report
  • [Book] 皮膚幹細胞の老化を、糖鎖から紐解く2021

    • Author(s)
      佐田亜衣子
    • Total Pages
      2
    • Publisher
      医学のあゆみ
    • Related Report
      2021 Research-status Report
  • [Remarks] Skin stem cells shuffle sugars as they age

    • URL

      https://www.eurekalert.org/pub_releases/2020-07/uot-ssc072120.php

    • Related Report
      2020 Research-status Report
  • [Remarks] 皮膚が老化すると「幹細胞の顔」が変わる! ~加齢に伴う皮膚幹細胞の糖鎖変化の解析に成功~

    • URL

      http://www.tsukuba.ac.jp/attention-research/p202007211400.html

    • Related Report
      2020 Research-status Report
  • [Remarks] 皮膚が老化すると「幹細胞の顔」が変わる! ~加齢に伴う皮膚幹細胞の糖鎖変化の解析に成功~

    • URL

      https://www.kumamoto-u.ac.jp/whatsnew/seimei/20200721

    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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