title: Scopoletin and scopolin isolated from Artemisia iwayomogi suppress differentiation of osteoclastic macrophage RAW 264.7 cells by scavenging reactive oxygen species.
abstract: Artemisia iwayomogi has been used as a folk medicine for treating various diseases including inflammatory and immune-related diseases. Scopoletin (1) and scopolin (2) were isolated from this species. Scopoletin (1) showed more potent peroxyl radical-scavenging capacity, reducing capacity, and cellular antioxidant capacity compared to scopolin (2). The inhibitory effect of 1 on the receptor activator of nuclear factor κB ligand-induced osteoclastic differentiation of RAW 264.7 macrophage cells was also more potent than that of 2. The production of general reactive oxygen species (ROS) and superoxide anions during differentiation of preosteoclastic RAW 264.7 cells into osteoclasts was attenuated by compounds 1 and 2. These findings indicate that the suppressive effects of 1 and 2 on the differentiation of preosteoclastic RAW 264.7 cells is partially due to their intracellular antioxidant capacity, as they can scavenge ROS and play an important signaling role in the differentiation process.
authors.affiliation: Department of Food and Nutrition, Hannam University, Daejeon 305-811, Republic of Korea.
authors.forename: Sang-Hyun
authors.initials: SH
authors.lastname: Lee
authors.forename: Yan
authors.initials: Y
authors.lastname: Ding
authors.forename: Xi Tao
authors.initials: XT
authors.lastname: Yan
authors.forename: Young-Ho
authors.initials: YH
authors.lastname: Kim
authors.forename: Hae-Dong
authors.initials: HD
authors.lastname: Jang
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology; D019306:Artemisia / Q000737:chemistry*; D002454:Cell Differentiation; D003374:Coumarins / Q000737:chemistry / Q000494:pharmacology*; D005960:Glucosides / Q000737:chemistry / Q000494:pharmacology*; D006861:Hydrogen Peroxide / Q000032:analysis; D007723:Korea; D008264:Macrophages / Q000187:drug effects*; D051379:Mice; D015394:Molecular Structure; D010010:Osteoclasts / Q000187:drug effects*; D017382:Reactive Oxygen Species / Q000032:analysis / Q000494:pharmacology*; D012603:Scopoletin / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D003374:Coumarins; D005960:Glucosides; D017382:Reactive Oxygen Species; C417572:scopolin; D006861:Hydrogen Peroxide; D012603:Scopoletin