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1. WO2003102154 - IMPROVED RECEPTOR DETECTION

Numéro de publication WO/2003/102154
Date de publication 11.12.2003
N° de la demande internationale PCT/US2003/017428
Date du dépôt international 29.05.2003
Demande présentée en vertu du Chapitre 2 21.12.2003
CIB
C12Q 1/00 2006.1
CCHIMIE; MÉTALLURGIE
12BIOCHIMIE; BIÈRE; SPIRITUEUX; VIN; VINAIGRE; MICROBIOLOGIE; ENZYMOLOGIE; TECHNIQUES DE MUTATION OU DE GÉNÉTIQUE
QPROCÉDÉS DE MESURE OU DE TEST FAISANT INTERVENIR DES ENZYMES, DES ACIDES NUCLÉIQUES OU DES MICRO-ORGANISMES; COMPOSITIONS OU PAPIERS RÉACTIFS À CET EFFET; PROCÉDÉS POUR PRÉPARER CES COMPOSITIONS; PROCÉDÉS DE COMMANDE SENSIBLES AUX CONDITIONS DU MILIEU DANS LES PROCÉDÉS MICROBIOLOGIQUES OU ENZYMOLOGIQUES
1Procédés de mesure ou de test faisant intervenir des enzymes, des acides nucléiques ou des micro-organismes; Compositions à cet effet; Procédés pour préparer ces compositions
C12Q 1/34 2006.1
CCHIMIE; MÉTALLURGIE
12BIOCHIMIE; BIÈRE; SPIRITUEUX; VIN; VINAIGRE; MICROBIOLOGIE; ENZYMOLOGIE; TECHNIQUES DE MUTATION OU DE GÉNÉTIQUE
QPROCÉDÉS DE MESURE OU DE TEST FAISANT INTERVENIR DES ENZYMES, DES ACIDES NUCLÉIQUES OU DES MICRO-ORGANISMES; COMPOSITIONS OU PAPIERS RÉACTIFS À CET EFFET; PROCÉDÉS POUR PRÉPARER CES COMPOSITIONS; PROCÉDÉS DE COMMANDE SENSIBLES AUX CONDITIONS DU MILIEU DANS LES PROCÉDÉS MICROBIOLOGIQUES OU ENZYMOLOGIQUES
1Procédés de mesure ou de test faisant intervenir des enzymes, des acides nucléiques ou des micro-organismes; Compositions à cet effet; Procédés pour préparer ces compositions
34faisant intervenir une hydrolase
CPC
C12Q 1/00
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS
1Measuring or testing processes involving enzymes, nucleic acids or microorganisms
C12Q 1/34
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS
1Measuring or testing processes involving enzymes, nucleic acids or microorganisms
34involving hydrolase
C12Q 1/37
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS
1Measuring or testing processes involving enzymes, nucleic acids or microorganisms
34involving hydrolase
37involving peptidase or proteinase
G01N 33/542
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
48Biological material, e.g. blood, urine
50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
53Immunoassay; Biospecific binding assay; Materials therefor
536with immune complex formed in liquid phase
542with steric inhibition or signal modification, e.g. fluorescent quenching
Déposants
  • DISCOVERX, INC. [US]/[US]
Inventeurs
  • NAQVI, Tabassum
  • ROUHANI, Riaz
  • SINGH, Rajendra
Mandataires
  • VERNY, Hana
Données relatives à la priorité
60/384,06029.05.2002US
Langue de publication Anglais (en)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) IMPROVED RECEPTOR DETECTION
(FR) IMPROVED RECEPTOR DETECTION
Abrégé
(EN) Improved results are obtained using in an enzyme fragment complementation assay, as an enzyme donor a fragment of &bgr;-galactosidase of from 36 to 50 amino acids joined to a ligand capable of binding to a receptor other than an immunoglobulin or fragment thereof. Conveniently, for enzyme assays, enzyme binding site inhibitors are conjugated to the enzyme donor, whereby binding of the enzyme to the binding site inhibitor results in a reduction in the turnover rate of &bgr;-galactosidase in the presence of EA and a substrate capable of producing a detectable signal. Analogously, ligands for membrane receptors may be conjugated to the ED for measurement of membrane receptors.
(FR) Improved results are obtained using in an enzyme fragment complementation assay, as an enzyme donor a fragment of ?-galactosidase of from 36 to 50 amino acids joined to a ligand capable of binding to a receptor other than an immunoglobulin or fragment thereof. Conveniently, for enzyme assays, enzyme binding site inhibitors are conjugated to the enzyme donor, whereby binding of the enzyme to the binding site inhibitor results in a reduction in the turnover rate of ?-galactosidase in the presence of EA and a substrate capable of producing a detectable signal. Analogously, ligands for membrane receptors may be conjugated to the ED for measurement of membrane receptors.
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