WO1997015684A1 - Systeme d'analyse qualitative et/ou quantitative de substances, de preference biologiques, par chimiluminescence amplifiee, procede et necessaire d'analyse en faisant application - Google Patents
Systeme d'analyse qualitative et/ou quantitative de substances, de preference biologiques, par chimiluminescence amplifiee, procede et necessaire d'analyse en faisant application Download PDFInfo
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- WO1997015684A1 WO1997015684A1 PCT/FR1996/001636 FR9601636W WO9715684A1 WO 1997015684 A1 WO1997015684 A1 WO 1997015684A1 FR 9601636 W FR9601636 W FR 9601636W WO 9715684 A1 WO9715684 A1 WO 9715684A1
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- 239000002901 radioactive waste Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000020183 skimmed milk Nutrition 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 150000003431 steroids Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical class OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 1
- 229960000790 thymol Drugs 0.000 description 1
- 208000030045 thyroid gland papillary carcinoma Diseases 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- G01N33/58—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances
- G01N33/582—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances with fluorescent label
-
- 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
- C12Q1/26—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving oxidoreductase
- C12Q1/28—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving oxidoreductase involving peroxidase
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2474/00—Immunochemical assays or immunoassays characterised by detection mode or means of detection
- G01N2474/20—Immunohistochemistry assay
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/962—Prevention or removal of interfering materials or reactants or other treatment to enhance results, e.g. determining or preventing nonspecific binding
Definitions
- the field of the present invention is that of analytical chemistry, a field in which we are interested, more particularly, in the identification and determination of chemical species, preferably biological, and in particular of high molecular weight species, such as nucleic acids or even biopolymers of a protein nature, e. g. : enzymes / substrates, antigens / antibodies.
- chemical species preferably biological, and in particular of high molecular weight species, such as nucleic acids or even biopolymers of a protein nature, e. g. : enzymes / substrates, antigens / antibodies.
- the present invention relates to: firstly, a system for qualitative and / or quantitative analysis of substances, preferably biological, by amplified chemiluminescence, secondly, an analysis method using this system, and thirdly, an analysis kit comprising said system.
- the biological substances or species, more particularly but not limited to, targeted by the invention are the RNA and DNA nucleic acids and any genetic structure comprising them, as well as the compounds capable of being involved in immunological reactions antigens (Ag) / antibodies (Ac), as well as the products which are paired together within the framework of an enzyme / substrate, enzyme / inhibitor, receptor / ligand and lectin / sugar enzyme recognition and reaction mechanism.
- Chemiluminescence and more specifically still called amplified chemistry, is one of the analytical techniques which proceeds from this principle and which is commonly used in the laboratory.
- Detection by amplified chemiluminescence can find well-known analytical procedures of the “western blot” or “ELISA” type for proteins, or even “southern & northern blot” for RNA and DNA.
- This amplified chemiluminescence technique constitutes an advantageous and promising alternative compared to conventional immunological analyzes in which radioactive isotopes are used, as a marker and revealer of the pairing considered.
- Radioanalysis is beginning to be obsolete because it has a large number of drawbacks, including: hazardous handling, short useful shelf life of the radioactive labeled substance, difficulty in radioactive labeling, and treatment of radioactive waste.
- luminescence can be defined as the emission of light resulting from the restitution of part of the energy emanating from a substance in an excited state.
- excitation results from a chemical reaction. The latter is triggered following the pairing of a ligand, directly or indirectly, with one or more substances, preferably biological, to be analyzed.
- This ligand is one of the elements of an analysis system comprising, in addition, a chemiluminescent reagent, a chemiluminescence enzyme or catalytic subunits, a specific substrate for this enzyme or for the catalytic subunit (s) and able to transform under the effect of the latter into at least one excitation initiator for the luminescent reagent, this excitation being accompanied by production of light.
- One of the most widely used systems in amplified chemiluminescence is that at the heart of which are the chemical reactions of cyclic diacylhydrazide type reagents, such as luminol or isoluminol.
- the enzymes used are, for example, peroxidases capable of transforming a substrate called an oxidant, such as H 2 O 2 into an oxidation initiator for luminol. Since this oxidation produces too few photons, the excitation of the luminol cannot be detected with significant sensitivity, it is therefore necessary to amplify this oxidation reaction
- patent EP 0 116 454 discloses a chemiluminescence analysis system, in which the luminescent reaction takes place between a peroxidase, an oxidant and a chemiluminescent reagent formed by luminol: 2,3-dihydro-1, 4- phthalazinedione.
- the invention protected in this patent relates to the use of an amplifier consisting, in particular, of 4-iodophenol, 4-bromophenol, 4-chlorophenol and other phenol derivatives, such as 4- hydroxycinnamic, 2-naphthol, 6-bromonapht-2-ol, 4-hydroxyphenyl disulfide, among others.
- new chemiluminescence amplifiers In an attempt to improve this known system, it was subsequently proposed, through the international patent application PCT WO 91/05 872, new chemiluminescence amplifiers.
- the latter are intended to be used in a system comprising luminol as reagent, peroxidase as enzyme and H 2 O 2 as oxidizing substrate.
- Said amplification means consist of inactive precursors, chosen from the family of esters of p-halophenols, eg iodophenols.
- the activation of these enhancer precursors is carried out using an esterase, when all the components of the chemiluminescence system are brought into contact, in order to obtain the production of light, which will serve as a developer of detection.
- Patent application EP 0 516 948 also discloses chemiluminescence amplifiers for the luminol / H 2 O 2 / peroxidase system, constituted by esters of formula ArOX in which X is a masking group which can be activated under the action of a hydrolitic enzyme and Ar is an aromatic group.
- these are inactive precursors of amplifiers, capable of being transformed into active products under the effect of an enzyme which may be, for example, an esterase in the case where these preamplifiers are esters.
- Particularly cited in this application are the disodium phosphoric esters of iodophenol, the acetic esters of diphenol and, finally, the exolydic derivatives of iodophenol and diphenol.
- the amplification means described in this European patent application does not provide better results than those according to PCT application WO 91/05 872 mentioned above.
- the amplifier consists of a combination of an organoboron compound and a non-boron organic compound.
- the non-boron organic amplification compound is a halophenol derivative, of the type of those mentioned above in the other references of the prior art.
- one of the essential objectives of the present invention is to provide a system for qualitative and / or quantitative analysis of substances, preferably biological, by amplified chemiluminescence, allowing a real and significant improvement in the emission. of light, resulting from the transition to the excited state of a chemiluminescent reagent.
- Another essential objective of the invention is to provide an amplified chemiluminescence system, of the type of the above, and which is simple to implement and economical.
- Another essential objective of the invention is to provide a chemiluminescence analysis system of the type of those comprising luminol or the like as a luminescent reagent, a peroxidase as the luminescence enzyme, a peracid or peroxide, such as H 2 O 2 as an oxidizing substrate and, in addition, an amplifier belonging to the family of phenol derivatives, said system having to be perfectly effective at low doses, as to the level of luminescence obtained.
- Another essential objective of the invention is to provide a method for qualitative and / or quantitative analysis of substances, preferably biological, by chemiluminescence, providing the light emission and sensitivity performances mentioned above.
- Another essential objective of the invention is to provide a kit for analysis by chemiluminescence applying said system and said method.
- the present invention relates, first of all, to a system of qualitative and / or quantitative analysis of substances, preferably biological, by amplified chemiluminescence, a system of the type of those involving, essentially: a ) at least one ligand capable of pairing with the substance or substances to be analyzed, b) at least one chemiluminescent reagent belonging to the family of diacylated cyclic hydrazides and fused to an aromatic residue, c) at least one enzyme, d) to at least one oxidizing substrate specific for the enzyme (c) capable of transforming under the effect of the latter into at least one oxidation initiator of the reagent (b) with light production, e) and at least one enhancer the luminescence reaction, characterized:
- R ° is a linear or branched radical in C, -C ] 0 functionalized or not, R ° being preferably selected from the following radicals: O * _ C "_ R> with RI corresponding: li ia a linear or branched alkyl in C, -C 10 , preferably a methyl, a propyl, a butyl, a pentyl or a hexyl, 2 ⁇ my a C, -C 10 alkylcarboxylic substituent, advantageously alkylmonocarboxylic, the substituents malonyl, succinyl , glutaryl, adipyle, heptanoyloique, maleyl or f ⁇ maryl being particularly preferred monocarboxylic alkyls, 3 ⁇ m alkylamine or aminoalkyl, 4i m aryl, aralkyl or alkylaryl, preferably phenyl, * or a radical of nature (
- R is a radical chosen from the group comprising halogens, iodine being more particularly selected, linear or branched alkyls containing from 1 to 30 carbon atoms, C j -C 30 aryls or aralkyls or C 1 -C 30 alkylaryls, the halogens, phenyls, phthalates and the following radicals being more particularly retained
- Y representing -CH 2 -, -O- or -N N- and V representing hydrogen, or Y representing -O-, -S- or -SS- and V representing hydroxyl,
- A represents hydrogen
- B represents halogen or alkyl in
- A represents halogen B represents hydrogen and R represents halogen or phenyl, or A represents hydrogen or halogen and R, B together represent a chain completing a naphthalene ring which, read in the direction of R towards B, is of formula 8
- the present invention therefore relates to an improved chemiluminescence or chemiluminometric analysis system. It is based on the surprising discovery of specific amplifiers derived from halophenol esters (e.g. iodophenols), which significantly improve the sensitivity of the luminescent reaction considered.
- halophenol esters e.g. iodophenols
- the term "improved" means that the total light emission of the luminescent reaction according to the invention and / or the signal / background noise ratio of said reaction are greater than those achieved by the systems known previously. .
- the chemiluminescent system according to the invention does not comprise hydrolytic enzymes intended to allow the cleavage of bond between oxygen and the radical R ° of the formula ( 1), so as to activate the amplifier.
- the spirit of the invention is radically opposed to this, since it is sought to obtain a minimum hydrolysis rate which is synonymous with high performance of luminescence amplification.
- 11 i -OCR non-hydrolysis of the amplifier (e) is preferably greater than or equal to 40% by weight, preferably 60% by weight and, more preferably still, 90% by weight.
- the present invention therefore proceeds from the advantageous and judicious selection of certain amplifiers derived from phenols and, more especially still, constituted by phenol esters (eg halophenols) with carboxylic acids, in particular mono, di or poly-carboxylic acids, optionally functionalized. , preferably by amino functionalities or alternatively by aromatic residues carrying one or more carboxylic acid functions.
- phenol esters eg halophenols
- carboxylic acids in particular mono, di or poly-carboxylic acids, optionally functionalized.
- aromatic residues carrying one or more carboxylic acid functions preferably by amino functionalities or alternatively by aromatic residues carrying one or more carboxylic acid functions.
- the amplifier used can be formed of compounds of formula
- esters of formula (1) in the case where one is dealing with a mixture of esters of formula (1) as amplifier (e), at least one of these esters, preferably comprising a substituent R 1 selected from the radicals (i), (2i) and (3i), as defined above and at least one other of these esters being particularized by a substituent RI selected from the radicals (4i), as defined above .
- the ligand included in the system according to the invention advantageously consists of at least one of the elements of the following pairs of apparent substances:
- enzymes can designate various products, such as proteins, hormones, haptens, steroids, metabolites, among others.
- the luminescent chemical reagent (b) is a product which can be brought into the excited state during a chemiluminescent reaction, for example initiated by the product (OH ! ) Of an enzymatic reaction and which then returns to a non-state excited after emitting or emitting light.
- this chemiluminescent reagent (b) is preferably a product belonging to the family of 2,3-dihydro-1,4-phthalazine dione (DPD). Even more preferably, this DPD corresponds to the following general formula (2): in which :
- R 4 represents an amino residue, substituted or not, and each of the radicals R 5 , R 6 and R 7 represents H, a C 1 -C 4 alkyl substituted or not, a C j -C 6 alkenyl, substituted or not , a hydroxyl, a C 6 -C 6 alkoxyl, a carboxyl, substituted or not, or an amino residue, substituted or not, where R 5 represents an amino residue, substituted or not, and each of the radicals R 4 , R 6 and R 7 represents H, C 1 -C 6 alkyl, substituted or unsubstituted, C 1 -C 6 alkenyl, substituted or not, alkenyl, substituted or not, hydroxyl, alkoxyl, carboxyl, substituted or unsubstituted , or an amino residue, substituted or unsubstituted, where R 4 and R 5 are taken together and represent an amino derivative substituted or not by a benzo radical and each of the radicals R 6
- substituted amino used in the legend of formula (2) above also designates the amido residues.
- this amino radical can serve as a coupling bridge for (b ) with the ligand, directly or via a spacer compound of the type of those known and suitable, eg hemisuccinates, hemiglutarates, hemimaleates, carboxymethylated derivatives, glucuronyls, mercaptoacetates.
- the analysis procedure will consist in reacting the chemiluminescent reagent (b) fixed with the other components of the system, so as to reveal the pairing through the chemiluminescence reaction.
- the fixation of (b) on the ligand represents only one of the possible methodological variants.
- enzyme denotes both complete proteins and catalytic subunits.
- the enzyme (c) preferably corresponds to a redox enzyme, such as that defined by the International Union of Biochemistry. This concerns in particular class 1 enzymes or oxidoreductases, from the classification of the International Union of Biochemistry
- An advantageous example of an oxidoreductase according to the invention is xanthine oxidase.
- the enzyme (c) is, more preferably still, selected from peroxidases such as horseradish peroxidase, microperoxidase, peroxidase extracted from microorganism Arthromyces ramosus and lactoperoxidase; horseradish peroxidase and microperoxidase being particularly preferred.
- peroxidases such as horseradish peroxidase, microperoxidase, peroxidase extracted from microorganism Arthromyces ramosus and lactoperoxidase; horseradish peroxidase and microperoxidase being particularly preferred.
- the enzyme (c) can optionally be coupled to the ligand, directly or indirectly, and thus constitute a marker. According to variants, this enzyme (c) can be in solution or even immobilized on a matrix.
- the substrate (d) is an oxidant formed preferably by a peracid or a peroxide and, more preferably still, by hydrogen peroxide and / or a perborate d 'alkaline or alkaline earth.
- the chemiluminescent reagent is 2,3-dihydro-1,4-phthalazine dione (especially luminol or isoluminol)
- this oxidant is transformed, under the effect of the enzyme (c) into an initiator (OH *) for the oxidation of reagent (b).
- this oxidant is attached directly or indirectly to the ligand, thus constituting a marker.
- it can be part of the means for revealing the pairing by chemiluminescence, which are used to react with the marker (s) carried by the ligand.
- the pH of the analysis medium is alkaline.
- Alkalinity is favorable to the luminescence reaction and also plays a role with regard to the solubility of the amplifiers of Formula (1) and of the chemiluminescent reagent of Formula (2).
- the regulation of the pH is therefore advantageously ensured by a regulator constituted by any suitable buffer such as, for example, the tris buffer, the carbonate buffer or the phosphate buffer
- a regulator constituted by any suitable buffer such as, for example, the tris buffer, the carbonate buffer or the phosphate buffer
- the ionic strength is also an important parameter of the analysis medium comprising the system according to the invention. It determines, in fact, the stability of the amplifiers (e) of formula (1) with regard to the hydrolysis of the radical OR 0 and, more particularly, of the ester bond. It has been seen above that the lower the hydrolysis rate of the amplifiers (e) in the form of esters, the higher the luminescence performance.
- halides mentioned above therefore advantageously perform this function of regulating the ionic strength. To this end, they titrate from 0.1 M to saturation, preferably from 0.1 to 3 M.
- the present invention also relates to a process for qualitative and / or quantitative analysis of substances, preferably biological, by amplified chemiluminescence, characterized in that it comprises the system as defined above.
- concentrations of components (b) to (e) of the system are as follows: - reagent (b) (eg DPD ): 5 ⁇ mol-200 mmol / 1, peroxidase (c): 0.1 ng to 5 g / l, oxidizing substrate (d): 10 ⁇ mol-30 mmol / 1, amplifier (e): 1 ⁇ mol-100 mmol / l
- concentrations are given relative to the totality of the analysis medium which advantageously comprises the buffered aqueous solution, and a fortiori regulated, as defined above.
- reaction in accordance with the preferred embodiment of the invention can be diagrammed as follows: Lum i nol + HO- + Peroxidase 1 "- light + products amplifier amplifier of formula (1)
- the present invention also relates to a kit for qualitative and / or quantitative analysis of substances, preferably biological, by amplified chemiluminescence, characterized in that it comprises the system as defined above.
- the system, method and kit according to the invention have immediate and obvious applications in the field of biochemical and biological analysis. They can, indeed, perfectly fit within the framework of immunological, immunoenzymatic, immunohistological, enzymatic and genetic analysis techniques.
- the disclosure systems can include the ligand / receptor, sugar / lectin, enzyme / substrate, enzyme / inhibitor recognition systems, for example membrane receptors, hormones, neurotransmitters and, generally, transducers of signals
- Solid supports are used in so-called heterogeneous, heterogeneous, competitive or even heterogeneous analytical procedures on two sites.
- Liquid media are more suitable for analytical procedures known as homogeneous phases.
- the system and method according to the invention can also be used to identify and measure, in the biological medium, substances such as peroxidases or endogenous peroxides (H 2 O) These are substances that correspond to one or more of the analysis system components
- Figure 1 attached shows curves of the intensity of the light emitted (ILE) in arbitrary units (ua) as a function of the quantity of peroxidase enzyme used in attomoles for iodophenol (curve - D - control) and for the iodophenylbutyrate amplifier B of Example 1 (Curve - "- amplifier B)
- Figure 2 attached shows the kinetics of light emission in the presence of the amplifier (B) through a graph of the light intensity emitted expressed in arbitrary units (ua), as a function of time in hours, in the conditions of Example 16.
- Figure 3 attached shows the results of the Western-Blot obtained with iodophenylbutyrate [amplifier (B)] compared to the results obtained with the control iodophenol.
- FIG. 4 appended represents the kinetics of light emission in the presence of the amplifier B of Example 1 [- • - (B)], by comparison with a positive control amplifier iodophenol [- • - control ⁇ ], and with a negative control without amplifier
- FIG. 5 appended represents the kinetics of light emission in the presence of the amplifier B of example 1 [- • - (B)], by comparison with a positive control amplifier iodophenol [- • - control ⁇ ], and with a negative control without amplifier
- FIG. 6 appended represents the kinetics of light emission in the presence of amplifier A of Example 1 with ionic force KCI 1 M Graph [- D -] and without ionic force [graph - O -], through light intensity graphs in arbitrary units (na) ⁇ f (t) (t in min), under the conditions of Example 20
- HRP Horseradish peroxidase type VI
- luminol 5-amino-2,3- dihydro-1,4-phthalazinedione
- Tris hydroxymethyl aminomethane
- hydrogen peroxide 30% potassium chloride and dimethyl sulfoxide (DMSO).
- the anti-c-met rabbit polyclonal antibody comes from Santa Cruz Biotechnology, USA;
- the peroxidase-labeled goat anti-rabbit polyclonal antibody comes from CovalAb, LYON, FRANCE.
- Nitrocellulose membrane Schoell, ECQUEVILLY, FRANCE).
- Kodak X-OMAT AR X-Ray film (ROCHESTER, NEW YORK, USA).
- the chemiluminescence reactions were carried out in 4 ml polystyrene tubes and in 4 ml borosilicate glass tubes (Costar Sc. Co, USA). The light emitted was measured using two luminometers, TLX1 monotube (L9990120-2121) (Dynatech Laborotories, France) and Biolumat LB9500 Berthold, France. Materials for polyacrylamide gel electrophoresis and for transfer come from Biorad Laboratories, France.
- IR infrared
- N NMR nuclear magnetic resonance
- Adipic acid (0.66 g, 4.5 mmol), 4-iodo phenol (1 g, 4.5 mmol) and a drop of 98% sulfuric acid are added to 20 ml of toluene.
- the solution is heated to reflux, the water formed is removed by a Dean-Stark apparatus (24 hours).
- the majority of the toluene is evaporated, then the remaining solution is poured into 50 ml of a saturated solution of strongly stirred sodium bicarbonate.
- the aqueous solution is extracted twice with ether, then acidified with 1 M hydrochloric acid to pH 4.
- the acid solution is extracted with chloroform (2 x 50 ml), the chloroform phases are combined and dried. After evaporation of the solvent, the residue is recrystallized from a benzene-hexane mixture.
- an IS test solution comprising:
- a solution S2 is also prepared comprising in addition potassium chloride at the 3M concentration.
- Table 2 Amplification of the light intensity by the esters of iodo phenol.
- the amplifier (B) of the invention is unquestionably more efficient than the iodophenol control.
- the c-met oncogene encodes a heterodimeric protein of 19C Kd in human thyroid papillary carcinomas (B-CPAP) (C. Paulin et Col, Int. J. Oncology, 7; 657-660 (1995)). These cells were used to detect the c-met protein according to the protocol described by C. Paulo, and Col. The following amounts of total cellular protein were used: 50 ⁇ g; 40 ⁇ g; 30 ⁇ g; 20 ⁇ g; 10 ⁇ g; 5 ⁇ g 2.5 ⁇ g and 1 ⁇ g.
- the membrane is then treated with various reagents under the following conditions: Saturation of non-specific sites on the membrane with 5% skimmed milk in PBS buffer for 30 min. Incubation of the membrane with the anti-c-met rabbit antibody for 1 hr at 37 ° C. Washing in 0.2% PBS-Tween and incubation with peroxidase-labeled anti-rabbit goat polyclonal antibody for 1 hr at 37 ° C.
- FIG. 3 represents the revelation in Western blot of the protein c-met (145 kDa) in the cell lysate, with the amplifier B and with a control amplifier iodophenol.
- the chemiluminescent reagent used is identical to that used in Examples 5 to 9.
- the numbers annotated on the upper longitudinal edge correspond to the quantities of total protein (QPT) contained in the cell lysate deposited in each lane.
- the QPTs are given in micrograms ( ⁇ g).
- Row T corresponds to the iodophenol control and row B to the amplifier (e) according to the invention as synthesized in Example 1 and designated by the letter B.
- EXAMPLE 18 TO 20 COMPARATIVE STUDY OF AMPLIFIED CHEMILUMINESCENCE USING PEROXIDASE LINKED TO ANTI-MOUSE ANTIBODIES FOR DETECTION OF MOUSE IMMUNOGLOBULINS
- the tube is emptied of its solution and then washed with 500 ⁇ l of 50 mM TRIS-HCl buffer pH 8.5. 100 ⁇ l of peroxidase-labeled anti-mouse antibodies, of the type sold by COVALAB, are introduced into this washed tube which has fixed the mouse immunoglobulins. These 100 ⁇ l of Ac are diluted 1 / 50,000 in the TRIS-HC1 buffer. This tube is then incubated for 1 hour at 37 ° C. Two washes are carried out as indicated above. Finally, 500 ⁇ l of chemiluminescent reagent containing the amplifiers A or B of Example 1 above is introduced into the tube containing the Ag (mouse Ig) / Ac complexes labeled with peroxidase.
- composition of this chemiluminescent reagent is identical to that of the reagent used in Examples 5 to 9 above.
- the tube is shaken and a reading is carried out using the Biolumat LB 9500 luminometer. Berthold France.
- Example 20 Amplifier A with and without ionic strength (Kcl 1M). 2 - RESULTS:
- Figures 4 and 5 clearly show that the amplifier B causes an increase in light emission at least 3 times greater than that induced by the iodophenol control.
- Figure 6 shows that amplifier A is more efficient when it is used in a medium with an ionic strength> 1 M KCI.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96934939A EP0880600A1 (fr) | 1995-10-20 | 1996-10-18 | Systeme d'analyse qualitative et/ou quantitative de substances, de preference biologiques, par chimiluminescence amplifiee, procede et necessaire d'analyse en faisant application |
JP9516349A JPH11514875A (ja) | 1995-10-20 | 1996-10-18 | 増幅された化学ルミネセンスによる物質、好ましくは生物学的物質の定性および/または定量分析のためのシステム、ならびに分析方法およびその適用のためのキット |
AU73066/96A AU722918B2 (en) | 1995-10-20 | 1996-10-18 | System for qualitatively and/or quantitatively analysing preferably biological substances using enhanced chemiluminescence, and method and analysis kit using same |
US09/051,761 US6124109A (en) | 1995-10-20 | 1996-10-18 | System for qualitatively and/or quantitatively analyzing preferably biological substances using enhanced chemiluminescence, and method and analysis kit using same |
CA002235068A CA2235068A1 (fr) | 1995-10-20 | 1996-10-18 | Systeme d'analyse qualitative et/ou quantitative de substances, de preference biologiques, par chimiluminescence amplifiee, procede et necessaire d'analyse en faisant application |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR95/12607 | 1995-10-20 | ||
FR9512607A FR2740219B1 (fr) | 1995-10-20 | 1995-10-20 | Systeme d'analyse qualitative et/ou quantitative de substances, de preference biologiques, par chimiluminescence, amplifiee, procede et necessaire d'analyse en faisant application |
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Publication Number | Publication Date |
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WO1997015684A1 true WO1997015684A1 (fr) | 1997-05-01 |
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PCT/FR1996/001636 WO1997015684A1 (fr) | 1995-10-20 | 1996-10-18 | Systeme d'analyse qualitative et/ou quantitative de substances, de preference biologiques, par chimiluminescence amplifiee, procede et necessaire d'analyse en faisant application |
Country Status (7)
Country | Link |
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US (1) | US6124109A (fr) |
EP (1) | EP0880600A1 (fr) |
JP (1) | JPH11514875A (fr) |
AU (1) | AU722918B2 (fr) |
CA (1) | CA2235068A1 (fr) |
FR (1) | FR2740219B1 (fr) |
WO (1) | WO1997015684A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004001415A1 (fr) * | 2002-06-24 | 2003-12-31 | Fujirebio Inc. | Intensificateur de chimiluminescence |
TW200808974A (en) * | 2006-08-02 | 2008-02-16 | Ind Tech Res Inst | Luminescence-based recipe |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4598044A (en) * | 1983-02-11 | 1986-07-01 | National Research Development Corporation | Enhanced luminescent or luminometric assay |
EP0296752A1 (fr) * | 1987-06-15 | 1988-12-28 | Btg International Limited | Réaction chémiluminescente et essai diagnostique |
EP0505198A1 (fr) * | 1991-03-20 | 1992-09-23 | Sanyo Chemical Industries, Ltd. | Procédé pour augmenter la réaction de luminescence, essai luminométrique et trousse pour sa mise en oeuvre |
US5206149A (en) * | 1989-04-28 | 1993-04-27 | Toray Industries, Inc. | Method of high sensitivity luminescence analysis |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2977895B2 (ja) * | 1989-10-17 | 1999-11-15 | ブリティッシュ・テクノロジー・グループ・リミテッド | 増幅化学ルミネセントアッセイ |
-
1995
- 1995-10-20 FR FR9512607A patent/FR2740219B1/fr not_active Expired - Fee Related
-
1996
- 1996-10-18 WO PCT/FR1996/001636 patent/WO1997015684A1/fr not_active Application Discontinuation
- 1996-10-18 EP EP96934939A patent/EP0880600A1/fr not_active Withdrawn
- 1996-10-18 AU AU73066/96A patent/AU722918B2/en not_active Ceased
- 1996-10-18 US US09/051,761 patent/US6124109A/en not_active Expired - Fee Related
- 1996-10-18 JP JP9516349A patent/JPH11514875A/ja active Pending
- 1996-10-18 CA CA002235068A patent/CA2235068A1/fr not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4598044A (en) * | 1983-02-11 | 1986-07-01 | National Research Development Corporation | Enhanced luminescent or luminometric assay |
EP0296752A1 (fr) * | 1987-06-15 | 1988-12-28 | Btg International Limited | Réaction chémiluminescente et essai diagnostique |
US5206149A (en) * | 1989-04-28 | 1993-04-27 | Toray Industries, Inc. | Method of high sensitivity luminescence analysis |
EP0505198A1 (fr) * | 1991-03-20 | 1992-09-23 | Sanyo Chemical Industries, Ltd. | Procédé pour augmenter la réaction de luminescence, essai luminométrique et trousse pour sa mise en oeuvre |
Non-Patent Citations (1)
Title |
---|
HORI H ET AL: "KIH-201: A NEW ENHANCER OF CHEMILUMINESCENCE IN THE LUMINOL- HYDROGEN PEROXIDE-PEROXIDASE SYSTEM CHARACTERIZED BY A HIGH- PERFORMANCE LUMINOMETER", ANALYTICAL LETTERS, vol. 27, no. 6, 1 January 1994 (1994-01-01), pages 1109 - 1122, XP000568630 * |
Also Published As
Publication number | Publication date |
---|---|
AU7306696A (en) | 1997-05-15 |
EP0880600A1 (fr) | 1998-12-02 |
JPH11514875A (ja) | 1999-12-21 |
CA2235068A1 (fr) | 1997-05-01 |
FR2740219A1 (fr) | 1997-04-25 |
FR2740219B1 (fr) | 1998-01-16 |
US6124109A (en) | 2000-09-26 |
AU722918B2 (en) | 2000-08-17 |
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