title: Correlation between antiangiogenic activity and antioxidant activity of various components from propolis.
abstract: Propolis possesses various physiological activities. In this study, we examined the antiangiogenic and antioxidant activities of various components from propolis: acacetin, apigenin, artepillin C, caffeic acid phenethyl ester, chrysin, p-coumaric acid, galangin, kaempferol, pinocembrin, and quercetin. The effects of these components were tested on in vitro models of angiogenesis, tube formation and growth of human umbilical vein endothelial cells (HUVECs). Furthermore, these components were evaluated for their antioxidant activities by 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging and ferric reducing/antioxidant power (FRAP) assays. Two propolis components, caffeic acid phenethyl ester, and quercetin, possessed strong inhibitory effects on tube formation and on endothelial cell proliferation and, coincidentally, showed strong antioxidant activity. Artepillin C, galangin, and kaempferol also possessed strong antiangiogenic and antioxidant activities to a slightly less degree. In contrast, acacetin, apigenin, and pinocembrin possessed a considerable degree of antiangiogenic activities, although they showed very low antioxidant activities. From these results, we propose that components from propolis such as artepillin C, caffeic acid phenethyl ester, galangin, kaempferol, and quercetin might represent a new class of dietary-derived antioxidative compounds with antiangiogenic activities. These propolis components may have the potential to be developed into pharmaceutical drugs for the treatment of angiogenesis-dependent human diseases such as tumors.
authors.affiliation: Graduate School of Nutritional and Environmental Sciences and Global COE Program, University of Shizuoka, Shizuoka, Japan.
authors.forename: Mok-Ryeon
authors.initials: MR
authors.lastname: Ahn
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Kunimasa
authors.forename: Shigenori
authors.initials: S
authors.lastname: Kumazawa
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Nakayama
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Kaji
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Uto
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Hori
authors.forename: Hideko
authors.initials: H
authors.lastname: Nagasawa
authors.forename: Toshiro
authors.initials: T
authors.lastname: Ohta
mesh_terms: D020533:Angiogenesis Inhibitors / Q000494:pharmacology*; D000975:Antioxidants / Q000494:pharmacology*; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D042783:Endothelial Cells / Q000187:drug effects; D016166:Free Radical Scavengers / Q000494:pharmacology; D006801:Humans; D011429:Propolis / Q000737:chemistry*; D017382:Reactive Oxygen Species / Q000378:metabolism
chemical_list: D020533:Angiogenesis Inhibitors; D000975:Antioxidants; D016166:Free Radical Scavengers; D017382:Reactive Oxygen Species; D011429:Propolis