WO1994017409B1 - Quantification d'analytes a l'etat de trace par electrophorese capillaire d'affinity - Google Patents
Quantification d'analytes a l'etat de trace par electrophorese capillaire d'affinityInfo
- Publication number
- WO1994017409B1 WO1994017409B1 PCT/US1994/000426 US9400426W WO9417409B1 WO 1994017409 B1 WO1994017409 B1 WO 1994017409B1 US 9400426 W US9400426 W US 9400426W WO 9417409 B1 WO9417409 B1 WO 9417409B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- analyte
- labelled
- fragment
- fab
- agent
- Prior art date
Links
- 238000001386 capillary affinity electrophoresis Methods 0.000 title 1
- 239000012491 analyte Substances 0.000 claims abstract 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract 10
- 210000001736 Capillaries Anatomy 0.000 claims abstract 3
- 238000001962 electrophoresis Methods 0.000 claims abstract 3
- 239000000203 mixture Substances 0.000 claims abstract 3
- 230000005684 electric field Effects 0.000 claims abstract 2
- 230000001809 detectable Effects 0.000 claims 4
- 238000000034 method Methods 0.000 claims 2
- 102000004190 Enzymes Human genes 0.000 claims 1
- 108090000790 Enzymes Proteins 0.000 claims 1
- 102000004965 antibodies Human genes 0.000 claims 1
- 108090001123 antibodies Proteins 0.000 claims 1
- 230000027455 binding Effects 0.000 claims 1
- 102000024070 binding proteins Human genes 0.000 claims 1
- 108091007650 binding proteins Proteins 0.000 claims 1
- 239000003446 ligand Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 230000035693 Fab Effects 0.000 abstract 8
- 125000003396 thiol group Chemical group [H]S* 0.000 abstract 5
- 102000018358 Immunoglobulins Human genes 0.000 abstract 2
- 108060003951 Immunoglobulins Proteins 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 2
- 239000007850 fluorescent dye Substances 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
Abstract
L'invention se rapporte à un procédé de détection quantitative de traces d'un analyte dans un échantillon. Le procédé, dans le mode préféré de réalisation, consiste à produire un fragment Fab' d'une immunoglobuline marquée au niveau d'un groupe sulfhydryle réactif avec une couleur fluorescente; à combiner le fragment Fab' marqué avec un échantillon qui peut contenir l'analyte; à concentrer les éléments du mélange obtenu dans un champ électrique; à séparer le complexe marqué analyte/agent obtenu à partir de n'importe quel agent marqué non transformé à l'aide des procédés électrophorétiques capillaires; et à détecter le signal fluorescent du complexe marqué analyte/agent. L'invention se rapporte également à un procédé de production d'un fragment Fab' marqué qui consiste à dissocier une molécule d'immunoglobuline pour obtenir un fragment F(ab')2; à réduire les liaisons de dislufure du fragment F(ab')2 pour obtenir deux fragments Fab', chacun ayant au moins un groupe sulfhydryle réactif, libre; et à mélanger un fragment Fab' ayant au moins un grupe sulfhydryle libre avec une couleur libre pour former un fragment Fab' marqué. De préférence, avant l'étape finale de mélanger, des liaisons de disulfure intrabrins sont formées par l'oxydation dans chaque fragment Fab', produisant ainsi des fragments individuels Fab' ayant chacun un groupe sulfhydryle réactif unique. Le procédé de détection quantitative consiste également, de manière plus générale, à utiliser n'importe quel agent biospécifique pour former un complexe avec l'analyte cible.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51708594A JP3530914B2 (ja) | 1993-01-22 | 1994-01-12 | 親和結合毛細管電気泳動による微量分析物の定量 |
EP94908588A EP0680608A1 (fr) | 1993-01-22 | 1994-01-12 | Quantification d'analytes a l'etat de trace par electrophorese capillaire d'affinity |
AU61625/94A AU6162594A (en) | 1993-01-22 | 1994-01-12 | Quantifying trace analytes by affinity capillary electrophoresis |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/006,922 US5348633A (en) | 1993-01-22 | 1993-01-22 | Method for quantitating trace amounts of an analyte in a sample by affinity capillary electrophoresis |
US006,922 | 1993-01-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1994017409A1 WO1994017409A1 (fr) | 1994-08-04 |
WO1994017409B1 true WO1994017409B1 (fr) | 1994-09-15 |
Family
ID=21723287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1994/000426 WO1994017409A1 (fr) | 1993-01-22 | 1994-01-12 | Quantification d'analytes a l'etat de trace par electrophorese capillaire d'affinity |
Country Status (5)
Country | Link |
---|---|
US (1) | US5348633A (fr) |
EP (1) | EP0680608A1 (fr) |
JP (1) | JP3530914B2 (fr) |
AU (1) | AU6162594A (fr) |
WO (1) | WO1994017409A1 (fr) |
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-
1993
- 1993-01-22 US US08/006,922 patent/US5348633A/en not_active Expired - Lifetime
-
1994
- 1994-01-12 WO PCT/US1994/000426 patent/WO1994017409A1/fr not_active Application Discontinuation
- 1994-01-12 JP JP51708594A patent/JP3530914B2/ja not_active Expired - Lifetime
- 1994-01-12 EP EP94908588A patent/EP0680608A1/fr not_active Withdrawn
- 1994-01-12 AU AU61625/94A patent/AU6162594A/en not_active Abandoned
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