title: Newly synthesized curcumin analog has improved  potential to prevent colorectal carcinogenesis in vivo.
abstract: Curcumin (diferuloylmethane) has chemopreventive and chemotherapeutic potentials against various types of cancers. We have developed a series of curcumin analogs to improve its low bioavailability by enhancing its potentials. The newly synthesized analog GO-Y030 [(1E, 4E)-1,5-bis-(3,5(-bismethoxymethoxyphenyl) penta-1,4-dien-3-one] showed a 30-fold greater growth suppression in vitro via similar molecular mechanisms to curcumin. The availability of this analog was examined by using a mouse model harboring the germ-line mutation of Apc, Apc(580D/+), in vivo. Apc(580D/+) mice had a very limited survival time with an intestinal obstruction due to polyposis. The average tumor number in mice fed GO-Y030 was reduced to 61.2% of those that were fed the basal diet (P < 0.05). Compared with Apc(580D/+) mice fed the basal diet (median survival time = 166.5 days), a significantly prolonged lifespan (213 days) was observed in Apc(580D/+) mice fed GO-Y030. The chemopreventive effect with GO-Y030 was improved, compared with curcumin (191 days). The survival benefit corresponded to the diminished intestinal tumor incidence in Apc(580D/+) mice fed GO-Y030. No adverse reactions were observed, judging from body weight or biochemical data concerning liver and renal damage. Degradation of accumulated beta-catenin with curcumin is one of the major mechanisms of chemoprevention in colorectal carcinogenesis. It was demonstrated that the number of beta-catenin-positive adenoma cells in Apc(580D/+) mice fed GO-Y030 was reduced.
authors.affiliation: Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan. hiroyuki@idac.tohoku.ac.jp
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shibata
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yamakoshi
authors.forename: Atsuko
authors.initials: A
authors.lastname: Sato
authors.forename: Hisatsugu
authors.initials: H
authors.lastname: Ohori
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Kakudo
authors.forename: Chieko
authors.initials: C
authors.lastname: Kudo
authors.forename: Yayoi
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Mika
authors.initials: M
authors.lastname: Watanabe
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Takano
authors.forename: Chikashi
authors.initials: C
authors.lastname: Ishioka
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Noda
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Iwabuchi
mesh_terms: D000236:Adenoma / Q000378:metabolism / Q000473:pathology; D000818:Animals; D001555:Benzene Derivatives / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D002471:Cell Transformation, Neoplastic / Q000378:metabolism / Q000473:pathology*; D015179:Colorectal Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000517:prevention & control*; D003474:Curcumin / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D004195:Disease Models, Animal; D020022:Genetic Predisposition to Disease; D007659:Ketones / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D051379:Mice; D015394:Molecular Structure; D015996:Survival Rate; D051176:beta Catenin / Q000378:metabolism
chemical_list: C541015:1,5-bis(3,5-bis(methoxymethoxy)phenyl)penta-1,4-dien-3-one; D001555:Benzene Derivatives; D007659:Ketones; D051176:beta Catenin; D003474:Curcumin