2007 Jul 12
Antitumor Activity, X-ray Crystal Structure, and DNA Binding Properties of Thiocoraline A, a Natural Bisintercalating Thiodepsipeptide.
Negri A, Marco E, García-Hernandez V, Domingo A, Llamas-Saiz AL, Porto-Sanda S, Riguera R, Laine W, David-Cordonnier MH, Bailly C, García-Fernandez LF, Vaquero JJ, Gago F.Departamento de Farmacología, Departamento de Bioquímica y Biología Molecular, and Departamento de Química OrgAnica, Universidad de AlcalA, E-28871 Madrid, Spain, Unidad de Rayos X, Laboratorio Integral de DinAmica y Estructura de Biomoléculas José R. Carracido, Edificio CACTUS, Campus Sur, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain, Departamento de Química OrgAnica, Facultad de Química, Universidad de Santiago de Compostela, E-15706 Santiago de Compostela, Spain, INSERM U-524 and Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret, IRCL, Place de Verdun, F-59045 Lille, France, and PharmaMar S.A., Avda. de los Reyes 1, Polígono Industrial La Mina-Norte, E-28770 Colmenar Viejo, Madrid, Spain.
The marine natural product thiocoraline A displayed approximately equal cytotoxic activity at nanomolar concentrations in a panel of 12 human cancer cell lines. X-ray diffraction analyses of orthorhombic crystals of this DNA-binding drug revealed arrays of docked pairs of staple-shaped molecules in which one pendent hydroxyquinoline chromophore from each cysteine-rich molecule appears intercalated between the two chromophores of a facing molecule. This arrangement is in contrast to the proposed mode of binding to DNA that shows the two drug chromophores clamping two stacked base pairs, in agreement with the nearest-neighbor exclusion principle. Proof of DNA sequence recognition was obtained from both classical DNase I footprinting experiments and determination of the melting temperatures of several custom-designed fluorescently labeled oligonucleotides. A rationale for the DNA-binding behavior was gained when models of thiocoraline clamping a central step embedded in several octanucleotides were built and studied by means of unrestrained molecular dynamics simulations in aqueous solution.
09 julio 2007
07 julio 2007
06 julio 2007
05 julio 2007
04 julio 2007
03 julio 2007
02 julio 2007
Sanofi retira en EEUU la solicitud de aprobación de su píldora contra la obesidad .
La empresa se adelanta así a un más que probable rechazo de la agencia estadounidense del medicamento, la FDA, que suele seguir los consejos de estos paneles independientes.
01 julio 2007
29 junio 2007
Spisulosine , Poster en el Congreso celebrado en Berlin del 26 al 29 Junio 2007 .
Enantioselective intramolecular aziridination starting from sulfamates : application to the synthesis of Spisulosine .
Audrey Estéoule*1, Loïc Leman1, Fernando Duran2, Philippe Dauban1, Robert H. Dodd1; 1ICSN, France, 2Universidad de Buenos Aires, Argentina
Audrey Estéoule*1, Loïc Leman1, Fernando Duran2, Philippe Dauban1, Robert H. Dodd1; 1ICSN, France, 2Universidad de Buenos Aires, Argentina
Pharma Mar Nueva Patente : TRATAMIENTO DE LAS ENFERMEDADES DEL CÁNCER POR APLIDIN .
BEHANDLUNG VON KREBSERKRANKUNGEN DURCH APLIDIN .
Publication number: AT363910T
Publication date: 2007-06-15
Inventor: FAIRCLOTH GLYNN THOMAS (US); TWELVES CHRIS (GB); PAZ-ARES LUIS (ES)
Applicant: PHARMA MAR SA (ES)
Classification: - international: A61K9/08; A61K35/56; A61K31/136; A61K31/205; A61K31/4015; A61K38/00; A61K38/15; A61K38/17; A61K45/00; A61P35/00; A61K9/08; A61K35/56; A61K31/136; A61K31/185; A61K31/4015; A61K38/00; A61K38/15; A61K38/17; A61K45/00; A61P35/00; - European: A61K31/205; A61K38/15 Application number: AT20000976137T 20001115 Priority number(s): GB19990027006 19991115; GB20000005701 20000309; GB20000007639 20000329; GB20000015496 20000623; GB20000025209 20001013 .
Abstract not available for AT363910T
Publication number: AT363910T
Publication date: 2007-06-15
Inventor: FAIRCLOTH GLYNN THOMAS (US); TWELVES CHRIS (GB); PAZ-ARES LUIS (ES)
Applicant: PHARMA MAR SA (ES)
Classification: - international: A61K9/08; A61K35/56; A61K31/136; A61K31/205; A61K31/4015; A61K38/00; A61K38/15; A61K38/17; A61K45/00; A61P35/00; A61K9/08; A61K35/56; A61K31/136; A61K31/185; A61K31/4015; A61K38/00; A61K38/15; A61K38/17; A61K45/00; A61P35/00; - European: A61K31/205; A61K38/15 Application number: AT20000976137T 20001115 Priority number(s): GB19990027006 19991115; GB20000005701 20000309; GB20000007639 20000329; GB20000015496 20000623; GB20000025209 20001013 .
Abstract not available for AT363910T
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