FLOW SYSTEM AND METHODS FOR DIGITAL COUNTING

The present invention relates to methods and systems for testing for the presence of a material such as one or more analyte types within a sample and more particularly, for improved single enzyme- linked immunosorbent assay (sELISA) testing as well as other variants of single-enzyme linked molecular...

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Main Author KUNDING, ANDREAS HJARNE
Format Patent
LanguageEnglish
French
Published 03.10.2023
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Abstract The present invention relates to methods and systems for testing for the presence of a material such as one or more analyte types within a sample and more particularly, for improved single enzyme- linked immunosorbent assay (sELISA) testing as well as other variants of single-enzyme linked molecular analysis (SELMA). The invention involves flow systems for digital counting of analytes with at least one opening (inlet/outlet). A support with hydrophilic and hydrophobic patches preferably harbours capture probes immobilised on the hydrophilic features. Nano-to-attoliter droplets are formed on the hydrophilic features. A gas phase (called gas phase seal) is applied to prevent/reduce evaporation from the droplets. La présente invention concerne des procédés et des systèmes permettant de tester la présence d'une matière, par exemple un ou plusieurs types d'analytes, dans un échantillon et plus particulièrement, d'améliorer les tests par essai d'immuno-absorption enzymatique (test ELISA) à enzyme unique, ainsi que d'autres variantes d'analyses moléculaires à une seule enzyme liée (SELMA). L'invention implique des systèmes d'écoulement permettant le comptage numérique d'analytes avec au moins une ouverture (entrée/sortie). Un support avec des zones hydrophiles et hydrophobes, de préférence des sondes de capture immobilisées sur les caractéristiques hydrophiles. Des gouttelettes de l'ordre du nanolitre à l'attolitre sont formées sur les caractéristiques hydrophiles. Une phase gazeuse (appelée joint de phase gazeuse) est appliquée pour empêcher/réduire l'évaporation des gouttelettes.
AbstractList The present invention relates to methods and systems for testing for the presence of a material such as one or more analyte types within a sample and more particularly, for improved single enzyme- linked immunosorbent assay (sELISA) testing as well as other variants of single-enzyme linked molecular analysis (SELMA). The invention involves flow systems for digital counting of analytes with at least one opening (inlet/outlet). A support with hydrophilic and hydrophobic patches preferably harbours capture probes immobilised on the hydrophilic features. Nano-to-attoliter droplets are formed on the hydrophilic features. A gas phase (called gas phase seal) is applied to prevent/reduce evaporation from the droplets. La présente invention concerne des procédés et des systèmes permettant de tester la présence d'une matière, par exemple un ou plusieurs types d'analytes, dans un échantillon et plus particulièrement, d'améliorer les tests par essai d'immuno-absorption enzymatique (test ELISA) à enzyme unique, ainsi que d'autres variantes d'analyses moléculaires à une seule enzyme liée (SELMA). L'invention implique des systèmes d'écoulement permettant le comptage numérique d'analytes avec au moins une ouverture (entrée/sortie). Un support avec des zones hydrophiles et hydrophobes, de préférence des sondes de capture immobilisées sur les caractéristiques hydrophiles. Des gouttelettes de l'ordre du nanolitre à l'attolitre sont formées sur les caractéristiques hydrophiles. Une phase gazeuse (appelée joint de phase gazeuse) est appliquée pour empêcher/réduire l'évaporation des gouttelettes.
Author KUNDING, ANDREAS HJARNE
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Snippet The present invention relates to methods and systems for testing for the presence of a material such as one or more analyte types within a sample and more...
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SubjectTerms CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PHYSICS
TESTING
TRANSPORTING
Title FLOW SYSTEM AND METHODS FOR DIGITAL COUNTING
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