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Jung HJ, Kim SM, Kim DH, Bang E, Kang D, Lee S, Chun P, Moon HR, Chung HY. 2,4-Dihydroxyphenyl-benzo[d]thiazole (MHY553), a synthetic PPARα agonist, decreases age-associated inflammatory responses through PPARα activation and RS scavenging in the skin. Exp Gerontol 2020; 143:111153. [PMID: 33189833 DOI: 10.1016/j.exger.2020.111153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 12/16/2022]
Abstract
We previously reported that 2,4-dihydroxyphenyl-benzo[d]thiazole (MHY553) is a PPARα agonist, which has been shown to inhibit tyrosinase activity in murine melanocyte and alleviate hepatic steatosis in aged rats. This study investigated the effects of MHY553 on the age-related occurrence of inflammatory responses via the molecular modulation of the nuclear factor-κB (NF-κB) signaling pathway in the skin of aged rats and skin fibroblast cells. Moreover, we investigated the antioxidant effect of MHY553 via in vitro assays of reactive oxygen species (ROS) and peroxynitrite (ONOO-) scavenging activities. We also scrutinized the ability of MHY553 as a PPARα activator in aged rat skin and H2O2-induced Hs27 fibroblast cells. In vivo experiments were performed in young, aged, and MHY553-fed aged rats (3 mg or 5 mg∙kg -1∙day -1 for 4 weeks). MHY553 dose-dependently scavenged ROS and ONOO-. Furthermore, we found that MHY553 suppressed the NF-κB transcription factor and downregulated mitogen-activated protein kinase (MAPK)/activator protein-1 (AP-1) signaling. MHY553 also inhibited the expression of pro-inflammatory cytokines including COX-2, iNOS, IL-1β, and IL-6. Our findings indicate the MHY553 scavenges ROS/reactive nitrogen species and inhibits inflammatory cytokines through PPARα activation in the skin. Thus, these results suggest that MHY553 may be of therapeutic interest for protecting skin from oxidative stress-induced damage and intrinsic aging.
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Affiliation(s)
- Hee Jin Jung
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Seong Min Kim
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Gyeongsang 52828, Republic of Korea
| | - Dae Hyun Kim
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - EunJin Bang
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Dongwan Kang
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Sanggwon Lee
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Pusoon Chun
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gimhae 47392, Republic of Korea
| | - Hyung Ryong Moon
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea.
| | - Hae Young Chung
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea.
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