DK2643694T3 - Hurtig in vivo-genmutationsassay baseret på pig-a-genet - Google Patents

Hurtig in vivo-genmutationsassay baseret på pig-a-genet Download PDF

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DK2643694T3
DK2643694T3 DK11842900.0T DK11842900T DK2643694T3 DK 2643694 T3 DK2643694 T3 DK 2643694T3 DK 11842900 T DK11842900 T DK 11842900T DK 2643694 T3 DK2643694 T3 DK 2643694T3
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erythrocytes
reticulocytes
fluorescent reagent
gpi anchor
sample
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DK11842900.0T
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Stephen D Dertinger
Steven M Bryce
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Litron Laboratories Ltd
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/68Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
    • C12Q1/6813Hybridisation assays
    • C12Q1/6827Hybridisation assays for detection of mutation or polymorphism
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/5002Partitioning blood components
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/5005Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
    • G01N33/5008Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
    • G01N33/5014Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics for testing toxicity
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/543Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
    • G01N33/54313Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals the carrier being characterised by its particulate form
    • G01N33/54326Magnetic particles

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  • Immunology (AREA)
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  • Hematology (AREA)
  • Urology & Nephrology (AREA)
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  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Claims (8)

  1. den berigede erytrocytprøve bringes i kontakt med et fluorescerende reagens, som mærker normokromatiske erytrocytter differentielt fra retikulocytter og leukocytter; det fluorescerende reagens exciteres med lys med passende excitationsbølgelængde; den fluorescensemission og lysspredning, som frembringes af det fluorescerende reagens, detekteres, og antallet af erytrocytter og/eller retikulocytter pr. enhed prøvevolumen tælles.
  2. 10. Fremgangsmåde ifølge krav 8, der endvidere omfatter: tilsætning af optællingsperler til den berigede erytrocytprøve inden adskillelsen; optælling, under detekteringstrinnet, af antallet af optællingsperler; og beregning af et forhold mellem GPI-anker-deficiente erytrocytter og perler og/eller et forhold mellem GPI-anker-deficiente retikulocytter og perler.
  3. 11. Fremgangsmåde ifølge krav 10, hvor opnåelsen omfatter, at: den berigede erytrocytprøve, der indeholder optællingsperler, bringes i kontakt med et fluorescerende reagens, som mærker normokromatiske erytrocytter differentielt fra retikulocytter og leukocytter; det fluorescerende reagens og optællingsperler exciteres med lys med passende excitationsbølgelængde; den fluorescensemission og lysspredning, som frembringes af det fluorescerende reagens og optællingsperlerne, detekteres, og antallet af erytrocytter og/eller retikulocytter og optællingsperler i prøven tælles; og et forhold mellem erytrocytter og perler og/eller et forhold mellem retikulocytter og perler beregnes.
  4. 12. Fremgangsmåde ifølge krav 8, der endvidere omfatter: tilvejebringelse af en anden beriget erytrocytprøve, hvor den anden prøve er opnået fra pattedyret inden eksponering for det eksogene agens; udførelse af trinnene med kontakt med det første og det andet fluorescerende reagens, adskillelse, kontakt med det tredje fluorescerende reagens, excitation og detektering på den anden berigede erytrocytprøve; og sammenligning af de resultater, der opnås fra den første og den anden prøve, hvor en statistisk signifikant afvigelse i frekvensen af GPI-anker-deficiente erytrocytter eller retikulocytter mellem den første og den anden prøve viser det genotoksiske potentiale af det eksogene agens.
  5. 13. Fremgangsmåde ifølge krav 8, hvor det eksogene agens er et kemisk eller fysisk agens, og en statistisk signifikant afvigelse i frekvensen af GPI-anker-deficiente erytrocytter eller retikulocytter fra en basislinjefrekvens for GPI-anker-deficiente erytrocytter eller retikulocytter hos ikke-eksponerede pattedyr eller vehikelkontrolpattedyr viser det genotoksiske potentiale af det eksogene kemiske eller fysiske agens; eller det eksogene agens er et agens, som kan modificere endogent induceret genetisk skade, og en statistisk signifikant afvigelse i frekvensen af GPI-anker-deficiente erytrocytter eller retikulocytter fra en basislinjefrekvens for GPI-anker-deficiente erytrocytter eller retikulocytter viser, at det eksogene agens kan modificere endogen DNA-skade; eller det eksogene agens omfatter et første eksogent agens, der kan modificere eksogent induceret genetisk skade, og et andet eksogent agens, der forårsager genetisk skade, og en statistisk signifikant afvigelse i frekvensen af GPI-anker-deficiente erytrocytter eller retikulocytter for det pattedyr, som har været eksponeret for et genotoksisk stof, i sammenligning med et pattedyr, der kun får det andet eksogene agens, viser, at det første eksogene agens kan modificere eksogent induceret DNA-skade.
  6. 14. Kit, der omfatter: et første fluorescerende reagens, der binder GPI-anker-udtrykkende celler, men ikke GPI-anker-deficiente celler; et andet fluorescerende reagens, der specifikt binder blodplader; et tredje fluorescerende reagens, der differentielt mærker normokromatiske erytrocytter, retikulocytter og leukocytter, idet det tredje fluorescerende reagens har et fluorescensemissionsspektrum, som ikke i det væsentlige overlapper med fluorescensemissionsspektrene for det første eller det andet fluorescerende reagens; et fjerde reagens, som er egnet til adskillelse af erytrocytter fra blodplader og leukocytter, idet det fjerde reagens omfatter et densitetsgradientmedium; et femte reagens, der omfatter paramagnetiske partikler, idet det femte reagens specifikt binder til GPI-anker-udtrykkende celler eller mindst en del af det første fluorescerende reagens, som er bundet derpå; og instruktioner til anvendelse af reagenserne og celleadskillelsesprodukter og til detektering og beregning af frekvensen af GPI-anker-deficiente erytrocytter og/eller retikulocytter i forhold til samlede erytrocytter og/eller retikulocytter i prøven.
  7. 15. Kit ifølge krav 14, hvor det første fluorescerende reagens omfatter et anti-CD59-, anti-CD24- eller anti-CD55-antistof eller en kombination deraf; det andet fluorescerende reagens omfatter et anti-CD61 -antistof eller anti-CD42b- antistof eller en kombination deraf; og/eller det tredje fluorescerende reagens er et nukleinsyrefarvestof.
  8. 16. Kit ifølge et af kravene 14 eller 15, der endvidere omfatter: en søjle, der er egnet til anvendelse med paramagnetiske partikler og magnetiske felter; et computerlæsbart lagermedium, som indeholder en cytometridataregistreringstemplate til rangordning af mutante erytrocytter og mutante retikulocytter ved hjælp af flowcytometri; ét eller flere af balancerede saltopløsninger og en opløsning af antikoagulant; og/eller optællingsperler.
DK11842900.0T 2010-11-24 2011-11-23 Hurtig in vivo-genmutationsassay baseret på pig-a-genet DK2643694T3 (da)

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US41710410P 2010-11-24 2010-11-24
PCT/US2011/062125 WO2012071557A1 (en) 2010-11-24 2011-11-23 Rapid in vivo gene mutation assay based on the pig-a gene

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EP (1) EP2643694B1 (da)
CA (1) CA2820619C (da)
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US9470694B2 (en) 2013-03-09 2016-10-18 Litron Laboratories Ltd. Simplified nuclei analysis platform and biomarker matrix that supports genotoxic mode of action determinations
CN109628563A (zh) * 2019-01-02 2019-04-16 南昌艾迪康医学检验实验室有限公司 检测piga基因启动子区域4972a>g突变位点的引物、试剂盒和方法

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US4444879A (en) 1981-01-29 1984-04-24 Science Research Center, Inc. Immunoassay with article having support film and immunological counterpart of analyte
US5314805A (en) 1991-10-28 1994-05-24 Molecular Probes, Inc. Dual-fluorescence cell viability assay using ethidium homodimer and calcein AM
US5858667A (en) 1996-09-06 1999-01-12 Litron Laboratories Method for the enumeration of micronucleated erythrocyte populations with a single laser flow cytometer
US6100038A (en) 1996-09-06 2000-08-08 Litron Laboratories Limited Method for the enumeration of micronucleated erythrocyte populations with a single laser flow cytometer
WO1999036778A1 (en) * 1998-01-20 1999-07-22 University Of Victoria Innovation & Development Corporation Detection of gpi anchored proteins
AU760854B2 (en) 1998-06-22 2003-05-22 Immunomedics Inc. Use of bi-specific antibodies for pre-targeting diagnosis and therapy
JP2003520828A (ja) 2000-01-27 2003-07-08 ジェネティクス インスティテュート,エルエルシー Ctla4(cd152)に対する抗体、これを含む結合体、およびその使用
PT1354034E (pt) 2000-11-30 2008-02-28 Medarex Inc Roedores transgénicos transcromossómicos para produção de anticorpos humanos
PL228041B1 (pl) 2001-01-05 2018-02-28 Amgen Fremont Inc Przeciwciało przeciwko receptorowi insulinopodobnego czynnika wzrostu I, zawierajaca go kompozycja farmaceutyczna, sposób jego wytwarzania, zastosowania, linia komórkowa, wyizolowana czasteczka kwasu nukleinowego, wektor, komórka gospodarza oraz zwierze transgeniczne.
US7358059B2 (en) 2002-01-09 2008-04-15 Universidad De Salamanca Simultaneous quantification of PIG-A associated proteins in red cells, platelets and leukocyte subsets using a single measurement
DK1553832T3 (da) * 2002-09-27 2007-10-01 Bioe Inc Præparater og fremgangsmåder til celleseparering
AU2003290948A1 (en) * 2002-11-15 2004-06-15 The General Hospital Corporation Screening methods to identify treatments for autoimmune disease
US20060140963A1 (en) 2003-04-14 2006-06-29 Arius Research, Inc. Cytotoxicity mediation of cells evidencing surface expression of CD59
CA2529045A1 (en) 2003-06-13 2004-12-29 University Of Pittsburgh-Of The Commonwealth System Of Higher Education Monitoring immunologic, hematologic and inflammatory diseases
EP1769081B1 (en) 2004-07-01 2016-01-20 Litron Laboratories Ltd. Method for enumerating mammalian cell micronuclei with an emphasis on differentially staining micronuclei and the chromatin of dead and dying cells
US7824874B2 (en) 2006-05-25 2010-11-02 Litron Laboratories, Ltd. Method for measuring in vivo mutation frequency at an endogenous gene locus
US8187826B2 (en) 2008-06-12 2012-05-29 Litron Laboratories, Ltd. Quantitative analysis of in vivo mutation at the Pig-A locus

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EP2643694B1 (en) 2018-01-03
WO2012071557A1 (en) 2012-05-31
US9133505B2 (en) 2015-09-15
EP2643694A1 (en) 2013-10-02
CA2820619C (en) 2020-01-07
US20120129160A1 (en) 2012-05-24
EP2643694A4 (en) 2014-04-16

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