title: Inhibitory effects of physalin B and physalin F on various human leukemia cells in vitro.
abstract: Physalins B and F were isolated and characterized from the ethanolic extract of the whole plant of Physalis angulata L. (Solanaceae). Both physalin B and physalin F inhibited the growth of several human leukemia cells: K562 (erythroleukemia), APM1840 (acute T lymphoid leukemia), HL-60 (acute promyelocytic leukemia), KG-1 (acute myeloid leukemia), CTV1 (acute monocytic leukemia) and B cell (acute B lymphoid leukemia). Physalin F showed a stronger activity against these leukemia cells than physalin B, especially against acute myeloid leukemia (KG-1) and acute B lymphoid leukemia (B cell). From the structural features, the active site seems to be the functional epoxy group for physalin F and the double bond for physalin B located at carbon 5 and 6; the former is much more active than the latter as regards anti-leukemic effects.
authors.affiliation: School of Pharmacy, College of Medicine, National Taiwan University, Taipei, ROC.
authors.forename: H C
authors.initials: HC
authors.lastname: Chiang
authors.forename: S M
authors.initials: SM
authors.lastname: Jaw
authors.forename: P M
authors.initials: PM
authors.lastname: Chen
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000494:pharmacology*; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D007783:Lactones / Q000737:chemistry / Q000494:pharmacology*; D007938:Leukemia / Q000188:drug therapy*; D012632:Secosteroids; D013256:Steroids; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D007783:Lactones; D012632:Secosteroids; D013256:Steroids; C033270:physalin B; C075425:physalin F