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Stress Hormone Cortisol Damages the Skin Barrier by Regulating Tight Junctions

밀착연접 조절을 통한 스트레스 호르몬 코티졸의 피부장벽 손상 연구

  • Lee, Sung Hoon (Basic Research & Innovation Division, Amorepacific Corporation R&D Center) ;
  • Son, Eui Dong (Basic Research & Innovation Division, Amorepacific Corporation R&D Center) ;
  • Choi, Eun-Jeong (Basic Research & Innovation Division, Amorepacific Corporation R&D Center) ;
  • Park, Won-Seok (Basic Research & Innovation Division, Amorepacific Corporation R&D Center) ;
  • Kim, Hyoung-June (Basic Research & Innovation Division, Amorepacific Corporation R&D Center)
  • 이성훈 ((주)아모레퍼시픽 기술연구원) ;
  • 손의동 ((주)아모레퍼시픽 기술연구원) ;
  • 최은정 ((주)아모레퍼시픽 기술연구원) ;
  • 박원석 ((주)아모레퍼시픽 기술연구원) ;
  • 김형준 ((주)아모레퍼시픽 기술연구원)
  • Received : 2020.03.12
  • Accepted : 2020.03.30
  • Published : 2020.03.30

Abstract

Psychological stress can affect the physiological condition of the skin and cause various cutaneous disorders. The stress hormone cortisol is secreted by various skin cells such as fibroblasts, keratinocytes, and melanocytes. Tight junctions (TJs) are cell-cell junctions that form a barrier in the stratum granulosum of mammalian skin. TJs can also affect other skin barriers and are affected by chemical, microbial, or immunological barriers. Stress can cause damage to the skin barrier. Interestingly, to our knowledge, there has not been any research demonstrating the involvement of TJs in this process. In this study, cortisol was used to treat keratinocytes to determine its role in regulating TJs. We found that cortisol damaged skin barrier function by regulating the gene expression and structure of TJ components. Cortisol also inhibited the development of the granular layer in a skin equivalent model. These results suggest that cortisol affects the skin barrier function by the regulation of TJs.

심리적 스트레스는 피부의 생리적 상태에 영향을 미치고 다양한 피부 질환을 일으킬 수 있다. 스트레스 호르몬인 코티솔은 섬유질, 케라틴세포, 멜라노사이트와 같은 다양한 피부세포에 의해 분비된다. 밀착연접(tight junction, TJ) 은 포유류 피부의 과립증에서 장벽을 형성하는 세포 접합부위이다. TJ은 다른 피부 장벽기능에도 영향을 미칠 수 있으며 화학, 미생물 또는 면역학적 피부장벽에게 영향을 받는다. 스트레스로 인한 피부 장벽 손상에 관한 보고는 있지만 사람피부에서 코티솔이 TJ을 조절한다는 보고는 없다. 스트레스 호르몬 코티솔이 TJ을 조절하는 기능을 확인하기 위해 각질형성세포에 코티솔을 처리하였다. 코티솔은 TJ 구성 성분의 유전자 발현과 구조를 조절하여 피부 장벽 기능을 손상시켰다. 또한 코티솔은 인공피부 모델에서 과립층 형성을 억제하였다. 이러한 실험결과를 통해 스트레스 호르몬 코티솔이 TJ를 조절함으로써 피부 장벽 기능에 손상을 일으키는 것을 확인할 수 있었다.

Keywords

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