title: Synthesis and biological analysis of new curcumin analogues bearing an enhanced potential for the medicinal treatment of cancer.
abstract: Curcumin (diferuloylmethane) is a dietary phytochemical with low toxicity that exhibits growth-suppressive activity against a variety of cancer cells and possesses certain chemopreventive properties. Curcumin has already been the subject of several clinical trials for use as a treatment in human cancers. Synthetic chemical modifications of curcumin have been studied intensively in an attempt to find a molecule with similar but enhanced properties of curcumin. In this study, a series of novel curcumin analogues were synthesized and screened for anticancer activity. New analogues that exhibit growth-suppressive activity 30 times that of curcumin and other commonly used anticancer drugs were identified. Structurally, the new analogues are symmetrical 1,5-diarylpentadienone whose aromatic rings possess an alkoxy substitution at each of the positions 3 and 5. Analysis of the effects of the analogues on the expression of cancer-related genes usually affected by curcumin indicated that some induced the down-regulation of beta-catenin, Ki-ras, cyclin D1, c-Myc, and ErbB-2 at as low as one eighth the concentration at which curcumin normally has an effect. The analogues, however, exhibited neither harmful nor growth-suppressive effects on normal hepatocytes where oncogene products are not activated. They also exhibited no toxicities in vivo that they may provide effective alternative therapies for the prevention and treatment of some human cancers.
authors.affiliation: Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan.
authors.forename: Hisatsugu
authors.initials: H
authors.lastname: Ohori
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yamakoshi
authors.forename: Masaki
authors.initials: M
authors.lastname: Tomizawa
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Shibuya
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Kakudo
authors.forename: Atsuko
authors.initials: A
authors.lastname: Takahashi
authors.forename: Shin
authors.initials: S
authors.lastname: Takahashi
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kato
authors.forename: Takao
authors.initials: T
authors.lastname: Suzuki
authors.forename: Chikashi
authors.initials: C
authors.lastname: Ishioka
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Iwabuchi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shibata
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000494:pharmacology; D017209:Apoptosis; D001555:Benzene Derivatives; D053148:Caspase 3 / Q000378:metabolism; D002453:Cell Cycle / Q000187:drug effects; D045744:Cell Line, Tumor; D003474:Curcumin / Q000031:analogs & derivatives* / Q000138:chemical synthesis* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D020869:Gene Expression Profiling; D006801:Humans; D007659:Ketones; D013329:Structure-Activity Relationship
chemical_list: C541015:1,5-bis(3,5-bis(methoxymethoxy)phenyl)penta-1,4-dien-3-one; D000970:Antineoplastic Agents; D000972:Antineoplastic Agents, Phytogenic; D001555:Benzene Derivatives; D007659:Ketones; D053148:Caspase 3; D003474:Curcumin