25 mayo 2007

Sanidad Italiana publica la Fase II Yondelis en NEI LIPOSARCOMI MIXOIDI ROTONDOCELLULARI CON MALATTIA LOCALMENTE AVANZATA METASTASICA RECIDIVATA REFRA

Nº 68 .
Introduccion :
Los resultados finales en STB demostraron que Yondelis(r) en forma de infusión de 3 horas es un agente bien tolerado y activo, y que la magnitud del efecto antitumoral parece encontrarse en el mismo rango que el producido con la infusión continua de 24 horas, una pauta con actividad conocida en STB (estudio pivotal STS-201, base de una solicitud de autorización de comercialización actualmente en evaluación por el CHMP de la EMEA). Además, la respuesta más duradera se observó en un paciente con liposarcoma mixoide, cáncer que recientemente ha demostrado ser sensible a este agente. En los TFE y en el RMS se observó cierto grado de actividad antitumoral que justifica realizar investigaciones adicionales.

Identificado un nuevo gen que parece implicado en el cáncer de mama . Se trata del gen Rap80 .

22 mayo 2007

INDOLE DERIVATIVES AS ANTITUMOURAL COMPOUNDS . Pharma Mar consigue Nueva Patente ( WO ) .

Synthesis and Structure-Activity Relationship of Cytotoxic Marine Cyclodepsipeptide IB-01212 Analogues. 18 / 5 / 2007 .

2007 May 18
Cruz LJ, Francesch A, Cuevas C, Albericio F.

Institute for Research in Biomedicine, Barcelona Science Park, University of Barcelona, 08028-Barcelona, Spain, Fax: (+34) 93-403-71-26.

Several recently discovered marine products have remarkable in vitro and in vivo anticancer profiles against a wide range of tumor cell lines. Some of these compounds are currently in clinical trials. These compounds show complex structures and mechanisms of action of interest. Herein, we describe the preparation of a series of totally synthetic molecules that are structurally related to the natural marine product IB-01212 and evaluated them as antitumor agents. For this, total solid-phase syntheses of the products were performed in parallel by two distinct routes: linear synthesis and convergent synthesis. Structural modifications were introduced in several residue positions to afford 21 IB-01212 analogues for structure-relationship studies. An increase in the number of methyl groups in the macrocycle enhanced cytotoxic activity. Also, the replacement of an ester bond by an amide bond favored antitumor activity against several human cell lines. In addition, the L configuration analogues were more active against all the tumor cell lines than those containing the D configuration. A significant increase in the size and asymmetry of the macrocycle diminished biological activity with respect to that of IB-01212. These results are of great value for the discovery of new and more effective anticancer agents.

Letrozol reduce más las recidivas y las metástasis en cáncer de mama .

Un laboratorio detecta trazas de cocaína en el agua del Rio Llobregat .


Los ratones podrían servir para investigar la genética del cáncer .