Jeon, Youngsic Jung, Yujung Youm, Jong-Kyung Kang, Ki Sung Kim, Yong Kee Kim, Su-Nam 2024-01-20T08:00:58Z 2024-01-20T08:00:58Z 2021-08-31 2015-02 0906-6705 https://pubs.kist.re.kr/handle/201004/125844 Peroxisome proliferator-activated receptors (PPARs) are members of the nuclear hormone receptor superfamily of ligand-activated transcription factors and consist of three isotypes: PPAR, PPAR/ and PPAR. PPARs are expressed in various cell types in the skin, including keratinocytes, fibroblasts and infiltrating immune cells. Thus, these receptors are highly studied in dermato-endocrine research, and their ligands are targets for the treatment of various skin disorders, such as photoageing and chronological ageing of skin. Intensive studies have revealed that PPAR/ functions in photoageing and age-related inflammation by regulating matrix metalloproteinases (MMPs) via nuclear factor-kappa B (NF-B) and activator protein-1 (AP-1). However, the detailed mechanism of PPAR/'s role in photoageing has not yet been elucidated. In this study, we confirmed that abietic acid (AA) is a PPAR/ dual ligand and significantly decreased UVB-induced MMP-1 expression by downregulating UVB-induced MAPK signalling and downstream transcription factors, subsequently reducing IB degradation and blocking NF-B p65 nuclear translocation in Hs68 human dermal fibroblast cells. Treatment of cells with AA and GW6471 or bisphenol A diglycidyl ether (BADGE), PPAR or PPAR antagonists, respectively, reversed the effect on UVB-induced MMP-1 expression and inflammatory signalling pathway activation. Taken together, our data suggest that AA acts as a PPAR/ dual activator to inhibit UVB-induced MMP-1 expression and age-related inflammation by suppressing NF-B and the MAPK/AP-1 pathway and can be a useful agent for improving skin photoageing. English WILEY NF-KAPPA-B GAMMA PHOSPHORYLATION RECEPTORS RADIATION INFLAMMATION MACROPHAGES ADIPOCYTES ANTAGONIST Abietic acid inhibits UVB-induced MMP-1 expression in human dermal fibroblast cells through PPAR alpha/gamma dual activation Article 10.1111/exd.12616 1 EXPERIMENTAL DERMATOLOGY, v.24, no.2, pp.140 - 145 EXPERIMENTAL DERMATOLOGY 24 2 140 145 scie scopus 000348911700013 2-s2.0-84930402968 Dermatology Dermatology Article NF-KAPPA-B GAMMA PHOSPHORYLATION RECEPTORS RADIATION INFLAMMATION MACROPHAGES ADIPOCYTES ANTAGONIST abietic acid AP-1 MMPs NF-beta B PPAR alpha/gamma dual activator