DK3124976T3 - Forbedret bakteriel endotoxintest til bestemmelsen af endotoxiner - Google Patents

Forbedret bakteriel endotoxintest til bestemmelsen af endotoxiner Download PDF

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Publication number
DK3124976T3
DK3124976T3 DK15178683.7T DK15178683T DK3124976T3 DK 3124976 T3 DK3124976 T3 DK 3124976T3 DK 15178683 T DK15178683 T DK 15178683T DK 3124976 T3 DK3124976 T3 DK 3124976T3
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Denmark
Prior art keywords
sample
endotoxin
rituximab
antibody
dialysis
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DK15178683.7T
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English (en)
Inventor
Pierre Lang
Wintzingerode Friedrich Von
Christian Alexander
Ulrich Zaehringer
Sven Deutschmann
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Hoffmann La Roche
Forschungszentrum Borstel Leibniz Lungenzentrum
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    • 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
    • G01N33/569Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
    • G01N33/56911Bacteria
    • 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
    • G01N33/579Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving limulus lysate
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/38Diluting, dispersing or mixing samples
    • 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
    • G01N33/68Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
    • G01N33/6854Immunoglobulins
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2333/00Assays involving biological materials from specific organisms or of a specific nature
    • G01N2333/195Assays involving biological materials from specific organisms or of a specific nature from bacteria
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2400/00Assays, e.g. immunoassays or enzyme assays, involving carbohydrates
    • G01N2400/10Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
    • G01N2400/50Lipopolysaccharides; LPS
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Urology & Nephrology (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Cell Biology (AREA)
  • Biotechnology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Microbiology (AREA)
  • Virology (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Peptides Or Proteins (AREA)
  • Medicinal Preparation (AREA)

Claims (17)

1. Fremgangsmåde til fremstillingen af en prøve til et limulus amoebocyte lysate (LAL) assay, hvor prøven omfatter et antistof, og hvor fremgangsmåden omfatter følgende trin i den følgende orden: (a) tilsætte magnesiumioner, fortrinsvis i form af MgCL·, til prøven, (b) fortynde prøven, og (c) dialysere prøven med en pH-værdi på 5,7-8,0 mod en endotoxin-fri vandig opløsning.
2. Fremgangsmåde til bestemmelse af bakteriel endotoxin i en prøve omfattende et antistof der udviser LER-effekt, hvor fremgangsmåden omfatter følgende trin i den følgende orden: (a) tilsætte magnesiumioner, fortrinsvis i form af MgCL·, til prøven, (b) fortynde prøven, (c) dialysere prøven med en pH-værdi på 5,7-8,0 mod en endotoxin-fri vandig opløsning, og (d) bestemme bakteriel endotoxin i prøven under anvendelse af et LAL-assay.
3. Fremgangsmåde ifølge krav 1 eller 2, hvor antistoffet er et terapeutisk antistof.
4. Fremgangsmåde ifølge et hvilket som helst af kravene 1-3, hvor antistoffet er formuleret med polysorbat 80.
5. Fremgangsmåde ifølge et hvilket som helst af kravene 1-4, hvor antistoffet er formuleret med en citratbuffer.
6. Fremgangsmåde ifølge et hvilket som helst af kravene 1-5, hvor antistoffet er formuleret med en ca. 25 mM natriumcitratbuffer og ca. 700 mg/l polysorbat 80 og har en pH-værdi på ca. 6,5.
7. Fremgangsmåde ifølge et hvilket som helst af kravene 1-6, hvor antistoffet er anti-CD20-antistoffet rituximab.
8. Fremgangsmåde ifølge et hvilket som helst af kravene 1-7, hvor i trin (a) magnesiumioner tilsættes til en slutkoncentration på ca. 25 til 75 mM.
9. Fremgangsmåde ifølge et hvilket som helst af kravene 1-8, hvor i trin (b) pH-værdien af prøven justeres ved at fortynde prøven med 10-50 mM Tris/HCI buffer pH 6,0-9,0, fortrinsvis 6,0-8,0.
10. Fremgangsmåde ifølge et hvilket som helst af kravene 1-9, hvor i trin (b) prøven fortyndes ved et forhold på 1:10.
11. Fremgangsmåde ifølge et hvilket som helst af kravene 1-10, hvor under dialyse i trin (c) prøven har en pH-værdi på 6,0-8,0.
12. Fremgangsmåde ifølge et hvilket som helst af kravene 1-11, hvor i trin (c) dialysen varer ca. 24 timer ved stuetemperatur.
13. Fremgangsmåde ifølge et hvilket som helst af kravene 1-12, hvor til dialysen i trin (c) anvendes en membran med en molekylevægt cut-off på 10 kDa.
14. Fremgangsmåde ifølge et hvilket som helst af kravene 1-13, hvor til dialysen i trin (c) anvendes en celluloseacetatmembran.
15. Fremgangsmåde ifølge et hvilket som helst af kravene 1-14, hvor til dialysen i trin (c) skiftes vandet to gange.
16. Fremgangsmåde ifølge et hvilket som helst af kravene 2-15, yderligere omfattende at fremstille en lav-endotoxingenvinding (LER) positiv kontrol ved spiking af en kendt mængde endotoxin til en alikvot af prøven og ryste den endotoxin-spikede alikvot af prøven i 60 min til 2 timer.
17. Anvendelse af fremgangsmåden ifølge et hvilket som helst af kravene 1-16 for at gøre prøven omfattende et antistof reaktiv mod faktor C i den LAL-enzymatiske kaskade.
DK15178683.7T 2015-07-28 2015-07-28 Forbedret bakteriel endotoxintest til bestemmelsen af endotoxiner DK3124976T3 (da)

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EP15178683.7A EP3124976B1 (en) 2015-07-28 2015-07-28 Improved bacterial endotoxin test for the determination of endotoxins

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DK3124976T3 true DK3124976T3 (da) 2018-12-10

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US (2) US10585097B2 (da)
EP (1) EP3124976B1 (da)
JP (2) JP6800226B2 (da)
KR (1) KR102630300B1 (da)
CN (2) CN111638346A (da)
AR (1) AR105497A1 (da)
AU (1) AU2016298598B2 (da)
BR (1) BR112018001748A8 (da)
CA (1) CA2989960C (da)
DK (1) DK3124976T3 (da)
ES (1) ES2699526T3 (da)
HR (1) HRP20181954T1 (da)
IL (2) IL256660B (da)
LT (1) LT3124976T (da)
MX (1) MX374236B (da)
PL (1) PL3124976T3 (da)
PT (1) PT3124976T (da)
RS (1) RS58167B1 (da)
SI (1) SI3124976T1 (da)
TR (1) TR201816369T4 (da)
WO (1) WO2017017135A1 (da)

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CN112462015B (zh) * 2020-11-18 2022-07-12 海南倍特药业有限公司 一种氢溴酸瑞马唑仑细菌内毒素的检测方法
CN116242977A (zh) * 2022-12-14 2023-06-09 无锡药明生物技术股份有限公司 内毒素保留时间的估算方法及其应用
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Publication number Publication date
US11360085B2 (en) 2022-06-14
EP3124976B1 (en) 2018-09-12
PL3124976T3 (pl) 2019-02-28
TR201816369T4 (tr) 2018-11-21
JP7164790B2 (ja) 2022-11-02
JP6800226B2 (ja) 2020-12-16
LT3124976T (lt) 2018-12-27
JP2021051080A (ja) 2021-04-01
CA2989960C (en) 2023-09-26
CN108027374B (zh) 2020-07-07
CN108027374A (zh) 2018-05-11
HRP20181954T1 (hr) 2019-01-25
CA2989960A1 (en) 2017-02-02
WO2017017135A1 (en) 2017-02-02
EP3124976A1 (en) 2017-02-01
BR112018001748A8 (pt) 2023-04-25
US20200240988A1 (en) 2020-07-30
RS58167B1 (sr) 2019-03-29
US10585097B2 (en) 2020-03-10
CN111638346A (zh) 2020-09-08
BR112018001748A2 (en) 2018-09-18
ES2699526T3 (es) 2019-02-11
KR20180030415A (ko) 2018-03-22
IL274576A (en) 2020-06-30
MX2018000679A (es) 2018-11-29
SI3124976T1 (sl) 2018-12-31
JP2018529978A (ja) 2018-10-11
AR105497A1 (es) 2017-10-11
WO2017017135A8 (en) 2017-03-30
IL274576B (en) 2021-05-31
US20180188249A1 (en) 2018-07-05
IL256660A (en) 2018-02-28
PT3124976T (pt) 2018-11-20
AU2016298598A1 (en) 2018-01-18
AU2016298598B2 (en) 2021-12-02
IL256660B (en) 2020-06-30
MX374236B (es) 2025-03-05
KR102630300B1 (ko) 2024-01-26

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