Screening for novel bioactivities

C - Chemistry – Metallurgy – 12 – Q

Patent

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C12Q 1/68 (2006.01) C07H 21/02 (2006.01) C07H 21/04 (2006.01) C12N 15/10 (2006.01) C12N 15/63 (2006.01) C12P 19/34 (2006.01) G01N 33/566 (2006.01)

Patent

CA 2301601

Disclosed is a process for identifying clones having a specified activity of interest, which process comprises (i) generating one or more expression libraries derived from nucleic acid directly isolated from the environment; and (ii) screening said libraries utilizing an assay system. More particularly, this is a process for identifying clones having a specified activity of interest by (i) generating one or more expression libraries derived from nucleic acid directly or indirectly isolated from the environment; (ii) exposing said libraries to a particular substrate or substrates of interest; and (iii) screening said exposed libraries utilizing a fluorescence activated cell sorter to identify clones which react with the substrate or substrates. Also provided is a process for identifying clones having a specified activity of interest by (i) generating one or more expression libraries derived from nucleic acid directly or indirectly isolated from the environment; (ii) screening said exposed libraries utilizing an assay requiring a binding event or the covalent modification of a target, and a fluorescence activated cell sorter to identify positive clones.

L'invention concerne un procédé servant à identifier des clones possédant une activité spécifique, ce qui consiste à (i) générer une ou plusieurs banques d'expression obtenues à partir d'acide nucléique directement isolé de l'environnement; (ii) effectuer le criblage de ces banques au moyen d'un système d'évaluation. Elle concerne, plus particulièrement, un procédé servant à identifier des clones possédant une activité spécifique, ce qui consiste à (i) générer une ou plusieurs banques d'expression obtenues à partir d'acide nucléique isolé directement ou indirectement de l'environnement; (ii) exposer lesdites banques à un ou plusieurs substrats particuliers; (iii) effectuer le criblage desdites banques exposées au moyen d'un trieur de cellules activé par fluorescence afin d'identifier des clones réagissant avec ce substrat ou ces substrats. Elle concerne également un procédé servant à identifier des clones possédant une activité spécifique, ce qui consiste à (i) générer une ou plusieurs banques d'expression obtenues à partir d'acide nucléique isolé directement ou indirectement de l'environnement et (ii) effectuer le criblage desdites banques exposées au moyen d'une méthode nécessitant une liaison ou la modification covalente d'une cible, ainsi que d'un trieur de cellules activé par fluorescence afin d'identifier les clones positifs.

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