WO1997032995A1 - Verfahren und test-kit für den nicht-radioaktiven und enzymatischen nachweis von reverser transkriptase - Google Patents
Verfahren und test-kit für den nicht-radioaktiven und enzymatischen nachweis von reverser transkriptase Download PDFInfo
- Publication number
- WO1997032995A1 WO1997032995A1 PCT/DE1997/000391 DE9700391W WO9732995A1 WO 1997032995 A1 WO1997032995 A1 WO 1997032995A1 DE 9700391 W DE9700391 W DE 9700391W WO 9732995 A1 WO9732995 A1 WO 9732995A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ppt
- complex
- buffer
- cdna
- reagent
- Prior art date
- Legal status (The legal status 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 status listed.)
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING 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
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/48—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving transferase
Definitions
- virus-specific antibodies and / or virus components e.g. anti-HIV antibody tests, HIV-p24 antigen tests, HIV-PCR detection test (Holodniy M. et al. J. Infect. Dis. 163, 862-866, 1991; Henrard DR et al. AIDS Res. Hum Retrovir. 8, 47-52, 1992).
- virus-specific antibodies and / or virus components e.g. anti-HIV antibody tests, HIV-p24 antigen tests, HIV-PCR detection test (Holodniy M. et al. J. Infect. Dis. 163, 862-866, 1991; Henrard DR et al. AIDS Res. Hum Retrovir. 8, 47-52, 1992).
- This analysis is based only on a non-functional or structure-specific molecular interaction between antibody and antigen or PCR primer and proviral DNA and therefore does not allow conclusions to be drawn about a whole and functional intact virus.
- Reverse transcriptase is the key enzyme of all retroviruses. Since it causes the reverse transcription (translation) of the viral RNA into complementary DNA (cDNA) and its subsequent integration into the genome of the host cell.
- the enzyme is specifically retroviruses and its enzyme activity is an indication of the existence of virus particles and their functional integrity, since the enzyme as a free molecule is very unstable and quickly becomes inactive.
- the present and patent pending method describes the routine direct and enzymatic detection of retroviruses using reverse transcriptase.
- the method to be patented and the corresponding test kit are based on the use for the reverse transcription reaction of a primer and templates immobilized on magnetic particles in the form of a particle primer / template complex (PPT complex) and the labeling of those on the PPT -Complex newly synthesized cDNA with biotinylated-deoxy nucleotide triphosphates in the form of a PPT-cDNA complex and its detection with streptavidin-linked marker enzymes and impressive substrates in the form of a PPT-cDNA conjugate complex (see Fig. 2).
- PPT complex particle primer / template complex
- Magnetic particles and ligand complexes immobilized on them have the advantage that they can be separated from solid phase solutions in the presence of a magnetic field and can be redispersed in solution in the absence of magnetic fields or with shaking (see Fig. 1).
- This simple, very fast, efficient and reproducible physical process can be used in immobilization of molecules on magnetic particles in biological tests to process these molecules and to separate (immobilize) or disperse (solubilize) as required.
- This alternating magnetic handling (Fig. 1) is particularly advantageous in enzymatic or biochemical reactions where reaction starting materials (substrates) from products have to be separated in part.
- the magnetic handling of particle-ligand complexes in solution is realized by the successive introduction and removal of magnets in the vicinity of the reaction vessel or the solution, whereby the successive separation and dispersion of the complexes or change of solutions, washing reaction stop etc. is realized can be (Fig. 1).
- a so-called microtiter-magnet separator (Fig. 3) consisting of an optically transparent Haiter plate with 24 rod magnets is used for the magnetic handling, which are inserted into the external space between the microtiter wells and thus separate the particle-ligand complexes in solution on the side walls of the wells (Fig. l).
- Primer can be a homo- or hetero-oligo-deoxynucleotide triphosphate (e.g. oligo-dT, oligo-dG), while as a template (matrix RNA molecule), a homo- or hetero-polymeric RNA, e.g. poly-rA ( poly-adenosine triphosphate) can be used.
- particles, primer and template form the so-called particle primer / tempiate complex / reagent (PPT reagent).
- PPT reagent in the presence of reverse transcriptase and biotin-labeled and unlabeled deoxy-nucleotide triphosphates dNTP's the corresponding cDNA is synthesized complementarily to the template RNA, which is also immobilized on the magnetic particles by means of the template primer and forms the so-called PPT : cDNA complex.
- biotinylated PPT-cDNA complex is incubated with streptavidin-conjugated marker enzymes (e.g. peroxidase, alkaline phosphatase), the so-called PPT-cDNA conjugate complex being formed.
- streptavidin-conjugated marker enzymes e.g. peroxidase, alkaline phosphatase
- the excess of unbound streptavidin conjugate is washed away and the marker enzyme immobilized on the particles is incubated with the appropriate substrates (e.g. ortho-phenylenediamine, AEBTS, TMB) and the reaction is determined photometrically by means of extinction / absorption or luminometrically.
- the newly synthesized cDNA is labeled using the built-in biotin dNTP 's .
- Labeling with biotin has the advantage that its detection with streptavindine / avidin and a conjugated marker enzyme is very sensitive due to the very strong binding of biotin /
- One unit is the enzyme activity which causes the incorporation of 1.0 nmol [ ⁇ ] -TMP into acid-precipitable products in 10 min at 37 ° C with poly (A) / (dT).
- the described method and the associated test kit have the following advantages over the existing detection methods and products: a) non-radioactive method / test kit or use of non-radioactive and aqueous reagents only, avoidance of organic solvents (TCA, toluene etc.) ), therefore feasible in any laboratory, without special approval and environmentally friendly, since radioactive and organic waste is avoided b) lOx improved sensitivity and increased linear measuring range (0.7-7.0 mU) compared to other non-radioactive methods, because the biotin / streptavidin , which is characterized by a very high binding constant, is used as the marking system.
- the potential applications of the method and test kits relate to the following areas: a) Research & development laboratories in industry, at universities and major research institutions involved in the development of antiviral agents. Therapeutics. Virus diagnostics, vaccines, experiment models etc. work. In all work, the direct detection of retroviruses is absolutely necessary. b) medical diagnosis and monitoring of retrovirus-related diseases e.g. AIDS, leukemia, autoimmune diseases, cancer. The same application also applies to retrovirus-related diseases in animals. Accordingly, potential users are: Schlen u. Hospitals, blood banks, clinical laboratories and laboratory communities. c) the entire transplantation and transfusion medicine or the donor banks of blood, organs, bone marrow, semen etc.
- HIV reverse transcriptase was used as the model enzyme to develop and optimize the method.
- the following experimental steps were carried out for each test batch. (well) carried out: 1) 50 ⁇ l of the particle primer / template reagent (oiigodT / poly rA-magnetic particles) were specified and diluted with 150 ⁇ l of particle washing buffer.
- reaction was started with 30 ⁇ l reaction mix and 60 min. incubated at 37 ° C. and shaken in a reaction mixture of 10 ⁇ M dTTP + biotin-dUTP, 50 mM Tris-HCl, pH 8.0. 80mM KC1, 10mM MgCl 2 , 2mM DTT, 1mM EDTA, 0.2% NP40, 0.2% Triton X-100.
- Fig. 4 and Tab. 1 show a linear increase in absorbance or enzymatic activity in a range of 0.1-7.0 mU reverse transcriptase within 15 min after addition of the substrate. With longer substrate incubation of 60 min. the sensitivity can be reduced even further to approx. 0.05 mU.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Biotechnology (AREA)
- Biophysics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9531341A JPH11504528A (ja) | 1996-03-06 | 1997-03-04 | 逆転写酵素の非放射性かつ酵素的な検出のための方法及び試験用キット |
| US08/952,068 US6174672B1 (en) | 1996-03-06 | 1997-03-04 | Process and test kit for non-radioactive enzymatic detection of reverse transcriptase |
| EP97918003A EP0830458A1 (de) | 1996-03-06 | 1997-03-04 | Verfahren und test-kit für den nicht-radioaktiven und enzymatischen nachweis von reverser transkriptase |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19608687A DE19608687A1 (de) | 1996-03-06 | 1996-03-06 | Verfahren und Test-Kit für den nichtradioaktiven, enzymatischen Nachweis von Reverser Transkriptase |
| DE19608687.6 | 1996-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997032995A1 true WO1997032995A1 (de) | 1997-09-12 |
Family
ID=7787416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1997/000391 Ceased WO1997032995A1 (de) | 1996-03-06 | 1997-03-04 | Verfahren und test-kit für den nicht-radioaktiven und enzymatischen nachweis von reverser transkriptase |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6174672B1 (de) |
| EP (1) | EP0830458A1 (de) |
| JP (1) | JPH11504528A (de) |
| DE (1) | DE19608687A1 (de) |
| WO (1) | WO1997032995A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6420988B1 (en) | 1998-12-03 | 2002-07-16 | Semiconductor Energy Laboratory Co., Ltd. | Digital analog converter and electronic device using the same |
| WO2002103040A1 (en) * | 2001-06-14 | 2002-12-27 | Cavidi Tech Ab | Viral drug susceptibility testing |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020142334A1 (en) * | 2001-01-30 | 2002-10-03 | Brown Janice A. | Methods of detecting poly(ADP-ribose) polymerase enzymatic activity |
| WO2022094415A1 (en) | 2020-10-30 | 2022-05-05 | Singular Genomics Systems, Inc. | Methods and compositions for reducing nucleotide impurities |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990006042A2 (en) * | 1988-11-21 | 1990-06-14 | Dynal As | Detection and quantitative determination of rna and dna |
| EP0392459A2 (de) * | 1989-04-14 | 1990-10-17 | Asahi Kasei Kogyo Kabushiki Kaisha | Verfahren zur Messung von Reverse-Transcriptase mit nichtradioaktiven Substanzen |
| EP0480408A1 (de) * | 1990-10-11 | 1992-04-15 | Asahi Kasei Kogyo Kabushiki Kaisha | Verfahren zur Bestimmung von Reverse-Transkriptase unter Verwendung von immobilisierten Primern |
| JPH04148698A (ja) * | 1990-10-11 | 1992-05-21 | Asahi Chem Ind Co Ltd | 固相化プライマーと鋳型rnaとのハイブリダイズ物を用いる逆転写酵素の測定法 |
| JPH04267898A (ja) * | 1991-02-21 | 1992-09-24 | Mitsubishi Kasei Corp | mRNAの検出方法及びmRNAの取得方法 |
| DE4416300A1 (de) * | 1993-06-01 | 1994-12-08 | Ortwin Dr Faff | Verfahren zum direkten und biochemisch funktionellen Nachweis von Retroviren in biologischen Proben |
| JPH08187099A (ja) * | 1995-01-11 | 1996-07-23 | Olympus Optical Co Ltd | 非放射性標識を用いるdna合成酵素及び該酵素に対する抗体の活性測定方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3813278A1 (de) * | 1988-01-12 | 1989-07-20 | Boehringer Mannheim Gmbh | Verfahren zum nachweis von nukleinsaeuren |
| SE462497B (sv) * | 1988-11-30 | 1990-07-02 | Clas Fredrik Runesson Kaelland | Saett foer att aktivitetsbestaemma polymeraser |
| JP3036063B2 (ja) * | 1990-11-20 | 2000-04-24 | 藤沢薬品工業株式会社 | フィブリンゲル溶解時間の測定方法 |
-
1996
- 1996-03-06 DE DE19608687A patent/DE19608687A1/de not_active Ceased
-
1997
- 1997-03-04 EP EP97918003A patent/EP0830458A1/de not_active Withdrawn
- 1997-03-04 WO PCT/DE1997/000391 patent/WO1997032995A1/de not_active Ceased
- 1997-03-04 US US08/952,068 patent/US6174672B1/en not_active Expired - Fee Related
- 1997-03-04 JP JP9531341A patent/JPH11504528A/ja active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990006042A2 (en) * | 1988-11-21 | 1990-06-14 | Dynal As | Detection and quantitative determination of rna and dna |
| EP0392459A2 (de) * | 1989-04-14 | 1990-10-17 | Asahi Kasei Kogyo Kabushiki Kaisha | Verfahren zur Messung von Reverse-Transcriptase mit nichtradioaktiven Substanzen |
| EP0480408A1 (de) * | 1990-10-11 | 1992-04-15 | Asahi Kasei Kogyo Kabushiki Kaisha | Verfahren zur Bestimmung von Reverse-Transkriptase unter Verwendung von immobilisierten Primern |
| JPH04148698A (ja) * | 1990-10-11 | 1992-05-21 | Asahi Chem Ind Co Ltd | 固相化プライマーと鋳型rnaとのハイブリダイズ物を用いる逆転写酵素の測定法 |
| JPH04267898A (ja) * | 1991-02-21 | 1992-09-24 | Mitsubishi Kasei Corp | mRNAの検出方法及びmRNAの取得方法 |
| DE4416300A1 (de) * | 1993-06-01 | 1994-12-08 | Ortwin Dr Faff | Verfahren zum direkten und biochemisch funktionellen Nachweis von Retroviren in biologischen Proben |
| JPH08187099A (ja) * | 1995-01-11 | 1996-07-23 | Olympus Optical Co Ltd | 非放射性標識を用いるdna合成酵素及び該酵素に対する抗体の活性測定方法 |
Non-Patent Citations (4)
| Title |
|---|
| DATABASE WPI Section Ch Week 9227, Derwent World Patents Index; Class B04, AN 92-223246, XP002034170 * |
| DATABASE WPI Section Ch Week 9245, Derwent World Patents Index; Class B04, AN 92-368411, XP002034169 * |
| K. SUZUKI ET AL.: "Colorimetric reverse transcriptase assay for HIV-1.", JOURNAL OF VIROLOGICAL METHODS, vol. 41, no. 1, January 1993 (1993-01-01), pages 21 - 28, XP002034202 * |
| PATENT ABSTRACTS OF JAPAN vol. 096, no. 011 29 November 1996 (1996-11-29) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6420988B1 (en) | 1998-12-03 | 2002-07-16 | Semiconductor Energy Laboratory Co., Ltd. | Digital analog converter and electronic device using the same |
| WO2002103040A1 (en) * | 2001-06-14 | 2002-12-27 | Cavidi Tech Ab | Viral drug susceptibility testing |
| US7875422B2 (en) | 2001-06-14 | 2011-01-25 | Cavidi Ab | Viral drug susceptibility testing |
| CN1539022B (zh) * | 2001-06-14 | 2011-04-13 | 卡维迪技术有限公司 | 病毒药物敏感性测试 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0830458A1 (de) | 1998-03-25 |
| US6174672B1 (en) | 2001-01-16 |
| DE19608687A1 (de) | 1997-09-11 |
| JPH11504528A (ja) | 1999-04-27 |
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