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handle: 10261/29563
[EN]Phosphorylcholine (PCho) participates in the transmission of intracellular signals involved in tumoral proliferation. The inhibition of the production of phosphorylcholine (PCho) can be achieved through inhibiting the choline kinase enzyme (Chok). The present invention discloses various alternative and reliable methods for the determination of the activity of the choline kinase ex vivo (in an assay tube, free of cells) or the determination of intracellular levels of Pcho, analysis in vitro (in intact living cells) in the presence or absence of potential compounds having antitumoral activity. The inhibition of the enzyme Chok and the reduction of the levels Pcho would identify said compounds as an antitumoral substance. [ES] La fosforilcolina (PCho) participa en la transmision de señales intracelulares implicadas en la proliferación tumoral. La inhibición de la producción de fosforilcolina PCho se puede conseguir mediante la inhibición de la enzima colina quinasa (Chok). En la presente invención se proponen diversos métodos alternativos y fiables para la determinación de la actividad de la colina quinasa ex vivo (en tubo de ensayo, libre de células) o la determinación de los niveles intracelulares de PCho, análisis in vitro (en células vivas intactas) en presencia o no de potenciales compuestos con actividad antitumoral. La inhibición de la enzima Chok y la redución de los niveles de Pcho identificaría dicho compuesto como una sustancia antitumoral.
Fecha de presentación internacional: 23.08.99.- Consejo Superior de Investigaciones Científicas (CSIC).
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