title: Isolation of anti-leukemia compounds from Citrus reticulata.
abstract: In vitro effects of medicinal plant extracts from the pericarpium of Citrus reticulata (cv Jiao Gan) (PCRJ) on the growth and differentiation of a recently characterized murine myeloid leukemic cell clone WEHI 3B (JCS) were investigated. Extracts of PCRJ not only inhibited the proliferation of JCS cells in a dose dependent manner, but also induced differentiation of JCS cells into macrophages and granulocytes. Morphological differentiation of PCRJ treated JCS cells was associated with an increase in phagocytic activity of the cells. Furthermore, both in vitro clonogenicity and in vivo growth of PCRJ treated JCS leukemic cells in syngeneic BALB/c mice were significantly reduced. The survival rate of mice receiving PCRJ treated JCS tumour cells was also increased. Using 1H-NMR, 13C-NMR, and GC/MS, two active components isolated from PCRJ were identified as nobiletin and tangeretin.
authors.affiliation: Department of Biology, Hong Kong Baptist University.
authors.forename: N K
authors.initials: NK
authors.lastname: Mak
authors.forename: Y L
authors.initials: YL
authors.lastname: Wong-Leung
authors.forename: S C
authors.initials: SC
authors.lastname: Chan
authors.forename: J
authors.initials: J
authors.lastname: Wen
authors.forename: K N
authors.initials: KN
authors.lastname: Leung
authors.forename: M C
authors.initials: MC
authors.lastname: Fung
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification* / Q000494:pharmacology*; D002454:Cell Differentiation / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D002957:Citrus / Q000737:chemistry*; D007951:Leukemia, Myeloid / Q000188:drug therapy*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D010936:Plant Extracts / Q000302:isolation & purification* / Q000494:pharmacology; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts