title: Biological activities of novel derivatives of DIF-1 isolated from Dictyostelium.
abstract: The differentiation-inducing factor-1 (DIF-1) is a lipophilic signal molecule (chlorinated alkylphenone) that induces stalk cell differentiation in the cellular slime mold Dictyostelium discoideum. In addition, DIF-1 and its derivatives have been shown to possess anti-leukemic activity and glucose consumption-promoting activity in vitro in mammalian cells. In this study, to assess the chemical structure-effect relationship of DIF-1, we synthesized eight derivatives of DIF-1 and investigated their stalk cell-inducing activity in Dictyostelium cells and pharmacological activities in mammalian cells. Of the derivatives, two amide derivatives of DIF-1, whose hydrophobic indexes are close to that of DIF-1, induced stalk cell differentiation as strongly as DIF-1 in Dictyostelium cells. It was also found that some derivatives suppressed cell growth in human K562 leukemia cells and promoted glucose consumption in mouse 3T3-L1 cells. These results give us valuable information as to the chemical structure-effect relationship of DIF-1.
authors.affiliation: Laboratory of Natural Product Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-yama, Aoba-ku, Sendai 980-8578, Japan.
authors.forename: Haruhisa
authors.initials: H
authors.lastname: Kikuchi
authors.forename: Shinya
authors.initials: S
authors.lastname: Ishiko
authors.forename: Yoshiteru
authors.initials: Y
authors.lastname: Oshima
authors.forename: Naomi
authors.initials: N
authors.lastname: Gokan
authors.forename: Kohei
authors.initials: K
authors.lastname: Hosaka
authors.forename: Yuzuru
authors.initials: Y
authors.lastname: Kubohara
mesh_terms: D041721:3T3-L1 Cells; D000818:Animals; D002454:Cell Differentiation / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D004023:Dictyostelium / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D006588:Hexanones / Q000138:chemical synthesis / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D006801:Humans; D051379:Mice; D013329:Structure-Activity Relationship
chemical_list: D006588:Hexanones; C053433:1-((3,5-dichloro)-2,6-dihydroxy-4-methoxyphenyl)-1-hexanone; D005947:Glucose