title: Inhibitors of fibril formation and cytotoxicity of beta-amyloid peptide composed of KLVFF recognition element and flexible hydrophilic disrupting element.
abstract: Beta-Amyloid peptide (Abeta) is the main protein components of neuritic plaques and its neurotoxicity would be exposed by formation of aggregate. The aggregation inhibitors composed of an Abeta recognition element (KLVFF) and a flexible hydrophilic disrupting element (aminoethoxy ethoxy acetate and aspartate) are designed and chemically synthesized. The inhibitory effects are examined by a pigment binding assay using Congo red or thioflavin T. The present compounds suppress the formation of aggregate, and the compound DDX3 is an especially effective inhibitor. In addition, the synthesized compounds efficiently suppress the cytotoxicity of Abeta against IMR-32 neuroblastoma cells in vitro.
authors.affiliation: National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Watanabe
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Nakamura
authors.forename: Shingo
authors.initials: S
authors.lastname: Akikusa
authors.forename: Tomoko
authors.initials: T
authors.lastname: Okada
authors.forename: Masato
authors.initials: M
authors.lastname: Kodaka
authors.forename: Takeo
authors.initials: T
authors.lastname: Konakahara
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Okuno
mesh_terms: D016229:Amyloid beta-Peptides / Q000737:chemistry* / Q000633:toxicity*; D052160:Benzothiazoles; D002455:Cell Division / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D004396:Coloring Agents / Q000494:pharmacology; D003224:Congo Red / Q000494:pharmacology; D004791:Enzyme Inhibitors / Q000494:pharmacology; D005456:Fluorescent Dyes / Q000494:pharmacology; D006801:Humans; D008956:Models, Chemical; D010446:Peptide Fragments / Q000737:chemistry* / Q000633:toxicity*; D010455:Peptides / Q000737:chemistry; D010860:Pigments, Biological / Q000494:pharmacology; D011485:Protein Binding; D017434:Protein Structure, Tertiary; D013778:Tetrazolium Salts / Q000494:pharmacology; D013844:Thiazoles / Q000494:pharmacology; D013997:Time Factors; D014407:Tumor Cells, Cultured
chemical_list: D016229:Amyloid beta-Peptides; D052160:Benzothiazoles; D004396:Coloring Agents; D004791:Enzyme Inhibitors; D005456:Fluorescent Dyes; D010446:Peptide Fragments; D010455:Peptides; D010860:Pigments, Biological; D013778:Tetrazolium Salts; D013844:Thiazoles; C442220:amyloid beta-protein (2-42); C009462:thioflavin T; D003224:Congo Red; C022616:thiazolyl blue