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Topic: Bio nanotechnologie
Posted by: Bussiere en calecon lycra violet moulant at ven. 30 avril 2004 10:20:03

Keywords: ca ressemble a du shaodwrun ou cyberpunk

Message:

taque au cancer

Cellule cancéreuse.

Une goutte d’eau en contiendrait des millions. Des millions de minuscules automates faits d’ADN et d’enzymes qui fonctionnent comme des ordinateurs mais sans silicium ni signaux électriques. Ehud Shapiro, le concepteur de cette machine moléculaire mise au point il y a deux ans, veut l’utiliser pour détecter et soigner le cancer.

Le chercheur de l’Institut Weizmann (Israël) a réussi à programmer son ordinateur à ADN de telle sorte qu’il puisse repérer la présence de cellules cancéreuses et délivrer en réponse une molécule destinée à les détruire. Les tests menés dans des tubes à essais sont prometteurs, explique Shapiro dans son article publié aujourd’hui dans l’édition électronique de la revue Nature.

S’il imagine déjà ces ordinateurs partant à l’assaut du cancer dans nos cellules, Ehud Shapiro relativise pourtant la portée de ces premiers tests, sachant que le passage du tube à essais à l’homme n’est envisageable qu’à très long terme.


source le point
@+
Bussiere
toujours étonné des progres de la science




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