title: Chrysin, a natural and biologically active flavonoid, influences a murine leukemia model in vivo through enhancing populations of T-and B-cells, and promoting macrophage phagocytosis and NK cell cytotoxicity.
abstract: Chrysin (5,7-dihydroxyflavone), a natural and biologically active flavonoid found in plants, possesses many biological activities and anticancer effects. However, there is no available evidence regarding the antileukemia responses to chrysin in a mouse model. We hypothesized that chrysin affects murine WEHI-3 leukemia cells in vitro and in vivo. The present study showed that chrysin at concentrations of 5-50 μM reduced the cell viability in concentration- and time-dependent manners. In an in vivo study, WEHI-3 leukemic BALB/c mice were established in order to determine antileukemia activity of chrysin. Our results revealed that chrysin increased the percentage of CD3 (T-cell maker), CD19 (B-cell maker) and Mac-3 (macrophages) cell surface markers in treated mice as compared with the untreated leukemia group. However, chrysin did not significantly influence the level of CD11b (a monocyte maker) in treated mice. Moreover, there was a significant increase in phagocytosis by macrophages from peripheral blood mononuclear cells, but no effect in those from the peritoneal cavity in leukemic mice after chrysin treatment. Isolated splenocytes from chrysin-treated leukemic mice demonstrated an increase of natural killer (NK) cell cytotoxicity. Based on these observations, chrysin might exhibit antileukemia effects on a murine WEHI-3 cell line-induced leukemia in vivo.
authors: Department of Chinese Medicine, Fong-Yuan Hospital, Department of Health, Executive Yuan, and School of Medicine and Nursing, Hunkuang University, Taichung, Taiwan, ROC.
authors: Chin-Chung
authors: CC
authors: Lin
authors: Chun-Shu
authors: CS
authors: Yu
authors: Jai-Sing
authors: JS
authors: Yang
authors: Chi-Cheng
authors: CC
authors: Lu
authors: Jo-Hua
authors: JH
authors: Chiang
authors: Jing-Pin
authors: JP
authors: Lin
authors: Chao-Lin
authors: CL
authors: Kuo
authors: Jing-Gung
authors: JG
authors: Chung
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000187:drug effects* / Q000276:immunology; D045744:Cell Line, Tumor; D003602:Cytotoxicity, Immunologic; D004195:Disease Models, Animal; D005419:Flavonoids / Q000494:pharmacology*; D007694:Killer Cells, Natural / Q000187:drug effects* / Q000276:immunology; D007942:Leukemia, Experimental / Q000276:immunology / Q000473:pathology*; D008264:Macrophages / Q000187:drug effects* / Q000276:immunology; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D010587:Phagocytosis; D013601:T-Lymphocytes / Q000187:drug effects* / Q000276:immunology
chemical_list: D005419:Flavonoids; C043561:chrysin