title: Isolation and characterization of a cyclic hydroxamic acid from a pollen extract, which inhibits cancerous cell growth in vitro.
abstract: One fraction, designated FV-7, in the water soluble ingredient of the pollen extract Cernilton was found to be inhibitory to the growth of a prostate cancer cell line. Characterization of FV-7 by high-resolution mass spectrometry and nuclear magnetic resonance identified the fraction as hydroxamic acid, 2,4-dihydroxy-2H-1,4-benzoxazin-3(4H)-one (DIBOA). To confirm this further, we synthesized an authentic sample of DIBOA and found subsequently that the synthetic DIBOA was structurally indistinguishable from FV-7. Furthermore, in a separate experiment we compared the in vitro effects of FV-7 and DIBOA on the growth of a prostate cancer cell line and found that in both cases the effect was inhibitory and that the inhibition curves obtained for both compounds were virtually identical.
authors.affiliation: Department of Medical Biochemistry, University of Geneva, Switzerland.
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.forename: F K
authors.initials: FK
authors.lastname: Habib
authors.forename: M
authors.initials: M
authors.lastname: Ross
authors.forename: U
authors.initials: U
authors.lastname: Burger
authors.forename: A
authors.initials: A
authors.lastname: Lewenstein
authors.forename: K
authors.initials: K
authors.lastname: Rose
authors.forename: J C
authors.initials: JC
authors.lastname: Jaton
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D002455:Cell Division / Q000187:drug effects; D006801:Humans; D006877:Hydroxamic Acids / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D013058:Mass Spectrometry; D010936:Plant Extracts / Q000737:chemistry*; D011471:Prostatic Neoplasms / Q000473:pathology; D012434:Secale; D013056:Spectrophotometry, Ultraviolet; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D006877:Hydroxamic Acids; D010936:Plant Extracts; C010070:cernilton