WO1999045142A2 - Mittel und verfahren zum nachweis chemischer substanzen - Google Patents
Mittel und verfahren zum nachweis chemischer substanzen Download PDFInfo
- Publication number
- WO1999045142A2 WO1999045142A2 PCT/DE1999/000558 DE9900558W WO9945142A2 WO 1999045142 A2 WO1999045142 A2 WO 1999045142A2 DE 9900558 W DE9900558 W DE 9900558W WO 9945142 A2 WO9945142 A2 WO 9945142A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- fluorophoric
- polynucleotide
- peptide sequence
- attached
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54306—Solid-phase reaction mechanisms
-
- 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
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6813—Hybridisation assays
- C12Q1/6816—Hybridisation assays characterised by the detection means
- C12Q1/6818—Hybridisation assays characterised by the detection means involving interaction of two or more labels, e.g. resonant energy transfer
Definitions
- the invention relates to an agent and a method for the detection of chemical substances and physical properties.
- the object of the present invention is to provide a means and a method which are universally suitable for the detection of chemical substances and physical properties.
- a second polynucleotide or peptide sequence having a second fluorophoric group the second end of which has a group that can be bound or attached to the chemical substance to be detected or a group that is sensitive to the physical substance to be detected
- first polynucleotide or peptide sequence can be attached to the second polynucleotide or peptide sequence in such a way that a spatial relationship which enables an interaction between the first and the second fluorophoric molecule can be established
- the agent is universally suitable for the detection of chemical substances and physical properties.
- the agent In order to check whether a certain chemical substance is contained in a solution, the agent is brought into contact with the solution. If the chemical substance is contained in the solution, it attaches to the group.
- a external force directed away from the solid phase for example a centrifugal force, changes the spatial relationship between the first and the second fluorophoric group.
- a fluorescence reaction can be observed. This can be the deletion of a fluorescence formed when the spatial relationship is present.
- the fluorescence reactions are essentially based on the so-called Forster effect.
- a second polynucleotide or peptide sequence having a second fluorophoric group the second end of which has a group that can be bound or attached to the chemical substance to be detected or a group that is recommended for the physical property to be detected
- first polynucleotide or peptide sequence is attached to the second polynucleotide or peptide sequence in such a way that a spatial relationship which enables an interaction between the first and the second fluorophoric molecule is formed
- the method is universally suitable for the detection of chemical substances and physical properties, such as the presence of a magnetic field.
- a magnetic chemical substance can be coupled to the group or a magnetic group can be provided.
- a magnetic field is applied that pulls the chemical substance or group away from the solid phase, the spatial relationship between the first and the second fluorophoric molecule is eliminated.
- a fluorescence reaction can be observed, which indicates the presence of a magnetic field.
- the method according to the invention is also faster than conventional methods for the detection of chemical substances, such as the ELISA method, because a time-consuming conversion of a coloring substrate is not necessary for the detection and because the washing steps for removing unbound antibodies are omitted.
- the first and the second polynucleotide or peptide sequence are linked to form a molecule.
- the spatial relationship can take the form of a secondary structure, in particular as a hairpin loop, helix or leaflet structure.
- the first fluorophoric molecule is bound to a first loop section and the second fluorophoric molecule opposite to a second loop section of the hairpin loop at a distance that enables interaction.
- the solid phase can be a plastic, preferably an electrically conductive one. This expediently contains a polycarbonate, t ⁇ methylthiophene, thiophene, t ⁇ ammobenzene and / or a polycarbene.
- the polynucleotide sequence can be a deoxyribin nucleic acid (DNA), a phosphothionate nucleic acid (PTO) or a peptide nucleic acid (PNA). Instead, a peptide or a protein can also be used.
- the fluorescence reaction can be the generation or quenching of fluorescence.
- FIG. 2 is a schematic view of FIG. 1, with an antigen and attached
- FIG. 3 shows a schematic view according to FIG. 2, the secondary structure being lifted up
- FIG. 5 is a schematic representation of FIG. 4, wherein the second means is in the second state
- Fig. ⁇ is a schematic representation of a third agent in the first state
- Fig. 7 is a schematic representation of Fig. 6, wherein the third means is in the second state.
- the means is shown schematically.
- a DNA 1 has a hairpin loop 2 with a first 2a and a corresponding second opposite loop section 2b.
- a first flourophore group 3 is bound to the first loop section 2a and a quencher 4 is bound to the second loop section 2b.
- a second fluorophoric group can also be provided. This can be a donor group.
- the first fluorophore group consists of an acceptor group. Suitable donor / acceptor compounds are shown in the table below:
- a first end E1 of DNA 1 is attached to a solid phase 5, e.g. a polycarbonate, bound.
- a solid phase 5 e.g. a polycarbonate
- an antibody 6 e.g. a CD4 antibody.
- FIG. 2 shows the agent shown in FIG. 1, an antigen 7 to be detected, for example a CD4-, on the antibody 6.
- a substance 8 is formed from a further group 9, for example a CD4 antibody, which is attachable or bindable to the antigen 7 and a superparamagnetic particle 10.
- Magnetic beads such as those offered by the companies MILTENY or DYNATECH can be used as superpara agnetic particles. Such magnetic beads can be coupled to a CD4 antibody to form substance 8 by means of Biotm. Instead of the superparamagnetic particle
- FIG. 3 shows the agent shown in FIG. 2 with attached antigen 7 and a substance 8 coupled to it.
- the hairpin loop 2 is removed here.
- the acceptor group 3 and the quencher 4 are so far apart that there is no longer any interaction between them.
- the substance 8 is added to a sample containing the antigen 7 to be detected.
- the further group 9 of substance 8 binds to the antigen 7.
- the agent according to FIG. 1 is brought into contact with the sample.
- the antigen 7 now binds (with substance 8 coupled to it) to the group 6.
- the magnet 11 is then brought into the vicinity of the sample.
- the magnetic field is designed such that the superparamagnetic particles 10 are moved away from the solid phase 1.
- the force acting on the DNA 1 thereby removes the hairpin loop 2.
- DNA 1 forms an elongated molecule.
- the interaction between the previously opposite first fluorophore group 3 and quencher 4 are eliminated. Fluorescence can now be observed when the first fluorophore group 3 is excited.
- the fluorescence reaction serves to detect the antigen 7.
- a donor / acceptor pair can also be used for the detection, in which an increased fluorescence occurs when the interaction exists and a weakened fluorescence when the interaction is canceled.
- the agent can now be removed from the sample.
- the detected antigen 7 is thus removed from the sample.
- the agent can be automatically removed by a robot of the sample and transferred to a device provided for this purpose in order to carry out further method steps.
- a DNA or PNA 1 has a hairpin loop 2 with a first loop section 2a and a second loop section 2b complementary thereto.
- a first fluorophoric group 3 is bound to the first loop section 2a and a second fluorophoric group 4 is bound to the second loop section 2b.
- the fluorophoric groups 3, 4 are spaced apart by space, which, with appropriate excitation, allows fluorescence energy transfer.
- the fluorophoric groups 3, 4 can be a donor / acceptor pair or a donor / quencher pair. Both the first fluorophoric group 3 and the second fluorophoric group 4 can have the donor or acceptor function.
- the hairpin loop 2 is held together with a first force F1.
- the DNA 1 is bound to the solid phase 5 at one end E1. It can be polystyrene or polycarbonate. It can be provided at one end of the DNA 1 biotin which reacts with a streptavid coating provided there for binding to the solid phase.
- a group 12 is bound to the second end E2 of DNA 1. This can be an antibody, an antigen, a receptor or a ligand. If the physical properties are to be verified, the group can also be a magnetic 12 or an electrically charged group.
- FIG. 5 shows the agent according to FIG. 4 in the second state.
- a second force F2 acts on the magnetic group 12. It is a magnetic force.
- the second force F2 is greater than the first force Fl.
- the DNA 1 When the second force F2 is applied, the DNA 1 is stretched. The hairpin bow 2 is destroyed. The spatial relationship between the first 3 and the second fluorophoric group 4 is canceled. Fluorescence energy transfer is no longer possible. The fluorophore properties of the first 3 and the second fluorophore group 4 change. Due to the change in the fluorophoric properties, it is possible to detect the presence of a magnetic field.
- a first DNA la which carries the first fluoropnore group 3 is bound to the solid phase 5.
- the first DNA la is complementary in sections to a second DNA lb, at the second end of which the magnetic group 12 is bound.
- the second DNA lb carries a quencher 4.
- the first DNA la and the second DNA lb are designed in such a way that when their complementary sequence sections are deposited together, the first fluorophoric group 3 and the quencher 4 can enter into a spatial relationship which enables fluorescence energy transfer.
- Two 40 base oligonucleotides are synthesized.
- the sequences of the oligonucleotides are complementary to one another.
- the melting point of the oligonucleotides is approx. 70 ° C.
- a first oligonucleotide carries an amino linker at the 3 'end and a fluorescent group at the 5' end.
- a two- The oligonucleotide carries a dabcyl group at the 3 'end and a biotm molecule at the 5' end.
- the oligonucleotides supplied by the manufacturer (TibMol Biol, Berlin) in the freeze-dried state are dissolved in a concentration of 100 mM in sterile water.
- 100 ⁇ l of the synthesized DNA hybrids are added to each well of a malemic anhydride-activated microtiter plate (Pierce, KMF, Berg. -Gladbach).
- the DNA is incubated with the surface overnight under rubble at 4 ° C.
- the solution is then removed from the surface and washed 3 times with 150 ⁇ l of sterile water.
- the surface is washed 3 times with 150 ⁇ l sterile 10 mM TrisCl, ImM EDTA 5 M. incubated at room temperature.
- the surface is stored in sterile 100 ⁇ l mM TrisCl, 1 mM EDTA ph 8 at 4 ° C.
- Particles are removed by gently pushing the microtiter plate spread over the surface.
- the suspension becomes 15 mm. incubated at room temperature.
- the fluorescence of the microtiter plate is observed in the microtiter plate reader and in the fluorescence microscope.
- the excitation energy measured is the wavelength for excitation of the fluorescence at 491 nm and the emission at 515 nm. Defined distances from the bottom of the microtiter plate and permanent magnet are introduced into the solution and removed again after 20 seconds. The increase in fluorescence indicates the presence of a magnetic field.
- a microtiter plate serves as a control, which carries a fixed DNA hybrid that was treated identically but does not carry a biotm.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Urology & Nephrology (AREA)
- Biotechnology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Microbiology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Biochemistry (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Cell Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biophysics (AREA)
- Food Science & Technology (AREA)
- Genetics & Genomics (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99917762A EP1070144A2 (de) | 1998-03-03 | 1999-03-02 | Mittel und verfahren zum nachweis chemischer substanzen |
| JP2000534673A JP2002505113A (ja) | 1998-03-03 | 1999-03-02 | 化学物質を検出するための試薬と方法 |
| CA002323171A CA2323171A1 (en) | 1998-03-03 | 1999-03-02 | Agent and method for detecting chemical substances |
| US09/623,581 US6468752B1 (en) | 1998-03-03 | 1999-03-02 | Agent and method for detecting chemical substances |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19808884A DE19808884A1 (de) | 1998-03-03 | 1998-03-03 | Vorrichtung und Verfahren zum Nachweis chemischer Substanzen |
| DE19808884.1 | 1998-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1999045142A2 true WO1999045142A2 (de) | 1999-09-10 |
| WO1999045142A3 WO1999045142A3 (de) | 1999-10-28 |
Family
ID=7859475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1999/000558 Ceased WO1999045142A2 (de) | 1998-03-03 | 1999-03-02 | Mittel und verfahren zum nachweis chemischer substanzen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6468752B1 (de) |
| EP (1) | EP1070144A2 (de) |
| JP (1) | JP2002505113A (de) |
| CA (1) | CA2323171A1 (de) |
| DE (1) | DE19808884A1 (de) |
| WO (1) | WO1999045142A2 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003056034A3 (de) * | 2001-12-24 | 2003-12-31 | Nanotype Gmbh | Verfahren zur in-vitro selektion von bindern |
| US7169554B2 (en) | 1999-12-10 | 2007-01-30 | Gen-Probe Incorporated | Monitoring oligonucleotide binding processes using chemiluminescence quenching |
| WO2009063391A1 (en) * | 2007-11-14 | 2009-05-22 | Koninklijke Philips Electronics N.V. | Means and methods for detection of nucleic acids |
| CN111771126A (zh) * | 2019-01-30 | 2020-10-13 | 苏州宇测生物科技有限公司 | 一种单分子定量检测方法及检测系统 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000077248A1 (de) * | 1999-06-15 | 2000-12-21 | november Aktiengesellschaft Gesellschaft für Molekulare Medizin | Vorrichtung und verfahren zum speichern von informationen |
| DE19960076C2 (de) * | 1999-12-13 | 2002-12-05 | November Ag Molekulare Medizin | Verfahren und Vorrichtung zum Nachweis und zur Quantifizierung von Biomolekülen |
| AU2001293747A1 (en) * | 2000-08-11 | 2002-02-25 | Nanotype Gmbh | Method and device for characterising and/or for detecting a bonding complex |
| DE10126798A1 (de) | 2001-06-01 | 2002-12-19 | Nanotype Gmbh | Verfahren zur Bestimmung einer Probe |
| DE50210475D1 (de) * | 2001-06-01 | 2007-08-23 | Arrowhead Res Corp | Verfahren zur bestimmung eines analyten |
| CN100442051C (zh) * | 2005-11-28 | 2008-12-10 | 李寿椿 | 4-(n,n-二甲氨基)偶氮苯-4’-磺酰氟及其合成方法和用途 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5759820A (en) * | 1988-11-21 | 1998-06-02 | Dynal As | Process for producing cDNA |
| CA2024548C (en) | 1989-09-05 | 2002-05-28 | David Issachar | Analyte specific chemical sensor |
| US6048690A (en) * | 1991-11-07 | 2000-04-11 | Nanogen, Inc. | Methods for electronic fluorescent perturbation for analysis and electronic perturbation catalysis for synthesis |
| EP0601889A2 (de) * | 1992-12-10 | 1994-06-15 | Maine Medical Center Research Institute | Nukleinsäure-Sonden |
| US5925517A (en) * | 1993-11-12 | 1999-07-20 | The Public Health Research Institute Of The City Of New York, Inc. | Detectably labeled dual conformation oligonucleotide probes, assays and kits |
| US5665558A (en) * | 1994-05-17 | 1997-09-09 | Gamma Biologicals, Inc. | Method and apparatus useful for detecting bloodgroup antigens and antibodies |
| DE19530078A1 (de) * | 1995-08-16 | 1997-02-20 | Bayer Ag | Optischer Festphasenbiosensor auf Basis von Streptavidin und Biotin |
| US5770365A (en) * | 1995-08-25 | 1998-06-23 | Tm Technologies, Inc. | Nucleic acid capture moieties |
| US6337183B1 (en) * | 1995-09-08 | 2002-01-08 | Scriptgen Pharmaceuticals, Inc. | Screen for compounds with affinity for nucleic acids |
-
1998
- 1998-03-03 DE DE19808884A patent/DE19808884A1/de not_active Ceased
-
1999
- 1999-03-02 US US09/623,581 patent/US6468752B1/en not_active Expired - Fee Related
- 1999-03-02 CA CA002323171A patent/CA2323171A1/en not_active Abandoned
- 1999-03-02 EP EP99917762A patent/EP1070144A2/de not_active Withdrawn
- 1999-03-02 WO PCT/DE1999/000558 patent/WO1999045142A2/de not_active Ceased
- 1999-03-02 JP JP2000534673A patent/JP2002505113A/ja not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7169554B2 (en) | 1999-12-10 | 2007-01-30 | Gen-Probe Incorporated | Monitoring oligonucleotide binding processes using chemiluminescence quenching |
| WO2003056034A3 (de) * | 2001-12-24 | 2003-12-31 | Nanotype Gmbh | Verfahren zur in-vitro selektion von bindern |
| WO2009063391A1 (en) * | 2007-11-14 | 2009-05-22 | Koninklijke Philips Electronics N.V. | Means and methods for detection of nucleic acids |
| CN111771126A (zh) * | 2019-01-30 | 2020-10-13 | 苏州宇测生物科技有限公司 | 一种单分子定量检测方法及检测系统 |
| CN111771126B (zh) * | 2019-01-30 | 2022-05-06 | 苏州宇测生物科技有限公司 | 一种单分子定量检测方法及检测系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2323171A1 (en) | 1999-09-10 |
| JP2002505113A (ja) | 2002-02-19 |
| EP1070144A2 (de) | 2001-01-24 |
| US6468752B1 (en) | 2002-10-22 |
| WO1999045142A3 (de) | 1999-10-28 |
| DE19808884A1 (de) | 1999-09-16 |
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