H2O2 accumulation by catalase reduction changes MAP kinase signaling in aged human skin in vivo

Cited 0 time in webofscience Cited 58 time in scopus
Shin, Mi Hee; Rhie, Gi-eun; Kim, Yeon Kyung; Park, Chi-Hyun; Cho, Kwang Hyun; Kim, Kyu Han; Eun, Hee Chul; Chung, Jin Ho
Issue Date
Nature Publishing Group
J Invest Dermatol 125:221-229
Catalase/*metabolism/pharmacologyCells, CulturedDermis/cytology/*enzymologyExtracellular Signal-Regulated MAP Kinases/metabolismFibroblasts/cytology/enzymologyHydrogen Peroxide/*metabolismJNK Mitogen-Activated Protein Kinases/metabolismMAP Kinase Signaling System/drug effects/*physiologyMatrix Metalloproteinase 1/metabolismProto-Oncogene Proteins c-jun/metabolismSkin Aging/*physiologyTranscription Factor AP-1/metabolismUp-Regulation/physiologyp38 Mitogen-Activated Protein Kinases/metabolism
To understand the molecular alterations occurring during the aging process, we compared mitogen-activated protein (MAP) kinase activities in the intrinsically aged and photoaged skins in the same individuals. Furthermore, we investigated the molecular events related to MAP kinase changes in intrinsically aged and photoaged skins. We found that extracellular-signal-regulated kinase (ERK) activity in photoaged skin was reduced, and that the activities of c-Jun N-terminal kinase (JNK) and p38 kinase were increased compared with intrinsically aged skin in the same individuals. Phospho-c-Jun levels and activator protein 1 activities in photoaged skin were also higher than in intrinsically aged skin. Moreover, catalase activity was found to be much reduced in primary dermal fibroblasts from photoaged skin, and as a result, H2O2 accumulated more in primary dermal fibroblasts in photoaged skin. In addition, treating primary dermal fibroblasts from photoaged skin with catalase reduced H2O2 levels, reversed aging-dependent MAP kinase changes, and inhibited matrix metalloproteinase (MMP)-1 expression. Our results indicate that the accumulation of reactive oxygen species due to catalase attenuation may be a critical aspect of the MAP kinase signaling changes that may lead to skin aging and photoaging in human skin in vivo. Thus, the induction and regulation of endogenous antioxidant enzymes including catalase may offer a strategy for preventing and treating skin aging.
0022-202X (Print)
Files in This Item:
There are no files associated with this item.
Appears in Collections:
College of Medicine/School of Medicine (의과대학/대학원)Dermatology (피부과학전공)Journal Papers (저널논문_피부과학전공)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.