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

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

Info

Publication number
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
Authority
DK
Denmark
Prior art keywords
erythrocytes
reticulocytes
fluorescent reagent
gpi anchor
sample
Prior art date
Application number
DK11842900.0T
Other languages
English (en)
Inventor
Stephen D Dertinger
Steven M Bryce
Original Assignee
Litron Laboratories Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Litron Laboratories Ltd filed Critical Litron Laboratories Ltd
Application granted granted Critical
Publication of DK2643694T3 publication Critical patent/DK2643694T3/da

Links

Classifications

    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Urology & Nephrology (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Analytical Chemistry (AREA)
  • Microbiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Cell Biology (AREA)
  • Food Science & Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Toxicology (AREA)
  • Biophysics (AREA)
  • General Engineering & Computer Science (AREA)
  • Genetics & Genomics (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • 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)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (1)

Publication Number Publication Date
DK2643694T3 true DK2643694T3 (da) 2018-04-16

Family

ID=46064694

Family Applications (1)

Application Number Title Priority Date Filing Date
DK11842900.0T DK2643694T3 (da) 2010-11-24 2011-11-23 Hurtig in vivo-genmutationsassay baseret på pig-a-genet

Country Status (5)

Country Link
US (1) US9133505B2 (da)
EP (1) EP2643694B1 (da)
CA (1) CA2820619C (da)
DK (1) DK2643694T3 (da)
WO (1) WO2012071557A1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2964790B1 (en) 2013-03-09 2023-06-07 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

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US7034121B2 (en) 2000-01-27 2006-04-25 Genetics Institue, Llc Antibodies against CTLA4
US7041870B2 (en) 2000-11-30 2006-05-09 Medarex, Inc. Transgenic transchromosomal rodents for making human antibodies
OA12589A (en) 2001-01-05 2006-06-08 Abgenix Inc Antibodies to insulin-like growth factor i receptor.
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
MXPA05003260A (es) * 2002-09-27 2005-09-12 Bioe Inc Composiciones y metodo de separacion de celulas.
WO2004045376A2 (en) * 2002-11-15 2004-06-03 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
EP2194383A1 (en) 2003-06-13 2010-06-09 University of Pittsburgh Monitoring immunologic, hematologic and inflammatory diseases
WO2006007479A2 (en) 2004-07-01 2006-01-19 Litron Laboratories, Ltd. Method for enumerating mammalian cell micronuclei via differential staining
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

Also Published As

Publication number Publication date
EP2643694A4 (en) 2014-04-16
CA2820619C (en) 2020-01-07
WO2012071557A1 (en) 2012-05-31
US9133505B2 (en) 2015-09-15
EP2643694B1 (en) 2018-01-03
CA2820619A1 (en) 2012-05-31
US20120129160A1 (en) 2012-05-24
EP2643694A1 (en) 2013-10-02

Similar Documents

Publication Publication Date Title
US7824874B2 (en) Method for measuring in vivo mutation frequency at an endogenous gene locus
Kimoto et al. Further development of the rat Pig‐a mutation assay: Measuring rat Pig‐a mutant bone marrow erythroids and a high throughput assay for mutant peripheral blood reticulocytes
Witt et al. Comparison of flow cytometry-and microscopy-based methods for measuring micronucleated reticulocyte frequencies in rodents treated with nongenotoxic and genotoxic chemicals
US7674598B2 (en) Method for a fully automated monoclonal antibody-based extended differential
US7625712B2 (en) Method for a fully automated monoclonal antibody-based extended differential
US5116539A (en) Reagent and method for measuring leukocytes and hemoglobin in blood
US8137975B2 (en) Method for a rapid antibody-based analysis of platelet populations
US5858667A (en) Method for the enumeration of micronucleated erythrocyte populations with a single laser flow cytometer
US6100038A (en) Method for the enumeration of micronucleated erythrocyte populations with a single laser flow cytometer
US8187826B2 (en) Quantitative analysis of in vivo mutation at the Pig-A locus
Dertinger et al. Human erythrocyte PIG‐A assay: An easily monitored index of gene mutation requiring low volume blood samples
US8535226B2 (en) Method for measuring in vivo hematotoxicity with an emphasis on radiation exposure assessment
US20030022245A1 (en) Method and compositions for analysis of pentraxin receptors as indicators of disease
Torous et al. Enumeration of micronucleated reticulocytes in rat peripheral blood: a flow cytometric study
Bhalli et al. Manifestation and persistence of Pig‐a mutant red blood cells in C57BL/6 mice following single and split doses of N‐ethyl‐N‐nitrosourea
Kimoto et al. Effective use of the Pig-a gene mutation assay for mutagenicity screening: measuring CD59-deficient red blood cells in rats treated with genotoxic chemicals
Richards et al. Development and evaluation of a stabilized whole‐blood preparation as a process control material for screening of paroxysmal nocturnal hemoglobinuria by flow cytometry
DK2643694T3 (da) Hurtig in vivo-genmutationsassay baseret på pig-a-genet
US7527978B2 (en) Flow cytometry based micronucleus assays and kits
Wong et al. Monochromatic gating method by flow cytometry for high purity monocyte analysis
Lehner et al. Automation in hematology
JP6017845B2 (ja) Gpiアンカータンパク質欠損細胞の検出方法
Sakata Reagent characteristics in the XE-2100 NRBC channel
Mead et al. Measurement of immunoglobulin free light chains in serum
Pedersen et al. American Society for Veterinary Clinical Pathology (ASVCP) 49th Annual Meeting