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2013 Fiscal Year Final Research Report

Prevention of photoaging by scavenging mitochondrial singlet oxygen

Research Project

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Project/Area Number 24700762
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Applied health science
Research InstitutionNippon Medical School

Principal Investigator

WOLF Alexander  日本医科大学, 付置研究所, 講師 (20434136)

Project Period (FY) 2012-04-01 – 2014-03-31
Keywords光老化 / 老化 / 酸化ストレス / 皮膚 / skin / oxidative stress / aging
Research Abstract

Due to a high desire to look young and beautiful, cosmetics to slow down aging are a large market. Wrinkle formation has been attributed to UVA radiation.
Using hairless transgenic mice expressing a redox-sensitive GFP (roGFP1) in the cytosol and in mitochondria of epidermal keratinocytese, we discovered that UVA induces oxidative stress in skin mitochondria but not cytosol. We used in vivo oxidative stress imaging to evaluate singlet oxygen scavengers. Topical application of carotenoids did not prevent UVA-induced oxidative stress. We assume this was due to poor permeation of the large carotenoids across the stratum corneum. However, a low molecular weight compound able to permeate the stratum corneum well could reduce the amount of oxidation induced by UVA relative to vehicle control.
Future research will further investigate substances that can prevent UVA or visible light-induced oxidative stress by topical application to skin.

  • Research Products

    (5 results)

All 2014 2013

All Journal Article (1 results) Presentation (4 results)

  • [Journal Article] Real-Time Monitoring of Oxidative Stress in Live Mouse Skin2014

    • Author(s)
      Wolf AM, Nishimaki K, Kamimura N, Ohta S
    • Journal Title

      Journal of Investigative Dermatology

      Volume: 134 Pages: 1701-1709

  • [Presentation] Oxidative stress in hairless mouse epidermis in response to visible and ultraviolet light2014

    • Author(s)
      Wolf Alexander
    • Organizer
      17th Biennial Meeting of Society for Free Radical Research International
    • Place of Presentation
      Kyoto
    • Year and Date
      20140323-26
  • [Presentation] Oxidative stress in hairless mouse epidermis in response to visible and ultraviolet light2013

    • Author(s)
      Wolf Alexander、中島裕也、太田成男
    • Organizer
      第36回日本分子生物学会
    • Place of Presentation
      神戸
    • Year and Date
      20131203-06
  • [Presentation] 紫外線による皮膚の生体内ストレスイメージング2013

    • Author(s)
      Wolf Alexander
    • Organizer
      日本香粧品学会
    • Place of Presentation
      東京
    • Year and Date
      20130606-07
  • [Presentation] 紫外線による皮膚の生体内酸化ストレスイメージング2013

    • Author(s)
      Wolf Alexander
    • Organizer
      第31回日本美容皮膚学会総会・学術大会
    • Place of Presentation
      神戸,神戸国際会議場
    • Year and Date
      2013-08-10

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Published: 2015-06-25   Modified: 2021-04-07  

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