EP1073900A1 - Procede d'amplification de la formation de complexes ligands-recepteurs et ses utilisations - Google Patents
Procede d'amplification de la formation de complexes ligands-recepteurs et ses utilisationsInfo
- Publication number
- EP1073900A1 EP1073900A1 EP99914611A EP99914611A EP1073900A1 EP 1073900 A1 EP1073900 A1 EP 1073900A1 EP 99914611 A EP99914611 A EP 99914611A EP 99914611 A EP99914611 A EP 99914611A EP 1073900 A1 EP1073900 A1 EP 1073900A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ligand
- receptor
- electromagnetic signal
- sample
- biological activity
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 73
- 230000015572 biosynthetic process Effects 0.000 title abstract description 15
- 239000003446 ligand Substances 0.000 claims abstract description 97
- 230000004071 biological effect Effects 0.000 claims abstract description 90
- 238000006243 chemical reaction Methods 0.000 claims abstract description 63
- 239000000126 substance Substances 0.000 claims abstract description 55
- 230000003321 amplification Effects 0.000 claims abstract description 52
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 52
- 235000013305 food Nutrition 0.000 claims abstract description 6
- 230000000721 bacterilogical effect Effects 0.000 claims abstract description 4
- 239000002537 cosmetic Substances 0.000 claims abstract description 4
- 239000003814 drug Substances 0.000 claims abstract description 4
- 238000003745 diagnosis Methods 0.000 claims abstract description 3
- 102000005962 receptors Human genes 0.000 claims description 89
- 108020003175 receptors Proteins 0.000 claims description 89
- 239000003153 chemical reaction reagent Substances 0.000 claims description 83
- 239000000523 sample Substances 0.000 claims description 59
- 239000000538 analytical sample Substances 0.000 claims description 31
- 239000000427 antigen Substances 0.000 claims description 31
- 102000036639 antigens Human genes 0.000 claims description 31
- 108091007433 antigens Proteins 0.000 claims description 31
- 230000004520 agglutination Effects 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 21
- 239000002904 solvent Substances 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 20
- 238000010790 dilution Methods 0.000 claims description 12
- 239000012895 dilution Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 12
- 230000005670 electromagnetic radiation Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007865 diluting Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 3
- 102000006240 membrane receptors Human genes 0.000 claims description 3
- 108020004084 membrane receptors Proteins 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 241000588724 Escherichia coli Species 0.000 description 37
- 238000012360 testing method Methods 0.000 description 14
- 241000194017 Streptococcus Species 0.000 description 13
- 150000004676 glycans Chemical class 0.000 description 11
- 229920001282 polysaccharide Polymers 0.000 description 11
- 239000005017 polysaccharide Substances 0.000 description 11
- 241000894006 Bacteria Species 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000001900 immune effect Effects 0.000 description 6
- 239000004816 latex Substances 0.000 description 6
- 229920000126 latex Polymers 0.000 description 6
- 239000012472 biological sample Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000002504 physiological saline solution Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 102000004190 Enzymes Human genes 0.000 description 3
- 108090000790 Enzymes Proteins 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 239000008280 blood Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 238000003127 radioimmunoassay Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 description 2
- 238000002965 ELISA Methods 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- 201000009906 Meningitis Diseases 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 230000000890 antigenic effect Effects 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 238000002875 fluorescence polarization Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000000760 immunoelectrophoresis Methods 0.000 description 2
- 238000010166 immunofluorescence Methods 0.000 description 2
- 238000001114 immunoprecipitation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 210000002966 serum Anatomy 0.000 description 2
- 241000557626 Corvus corax Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000009830 antibody antigen interaction Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229940088623 biologically active substance Drugs 0.000 description 1
- 229960002685 biotin Drugs 0.000 description 1
- 235000020958 biotin Nutrition 0.000 description 1
- 239000011616 biotin Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 229940126619 mouse monoclonal antibody Drugs 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000008223 sterile water Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 239000000439 tumor marker Substances 0.000 description 1
- -1 urine Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N37/00—Details not covered by any other group of this subclass
- G01N37/005—Measurement methods not based on established scientific theories
-
- 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
-
- 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
- G01N33/566—Immunoassay; Biospecific binding assay; Materials therefor using specific carrier or receptor proteins as ligand binding reagents where possible specific carrier or receptor proteins are classified with their target compounds
Definitions
- the present invention relates to a method for amplifying the formation of complexes between the two elements of a ligand / receptor pair, to a method and to an apparatus for detecting the presence, in a sample (hereinafter "sample”).
- analytical " of a substance corresponding to one of the two elements of a ligand / receptor pair, implementing this amplification method, to the applications of this detection method, as well as to a detection method of the presence, in an electromagnetic signal, of the electromagnetic signal characteristic of the biological activity of a substance corresponding to one of the two elements of a ligand / receptor pair, also implementing said amplification method.
- affinity properties of antibodies towards antigens are the basis of a large number of immunological detection methods which have in common the use of the formation of antigen-antibody complexes - the substance sought could be either the antigen or the antibody - and detect, or even quantify, the complexes thus formed.
- immunological detection methods which are very frequently used include immunoprecipitation, agglutination reactions, equilibrium dialysis, fluorescence quenching, fluorescence polarization, immunoelectrophoresis. , counter-immunoelectrophoresis or electrosyneresis, radioimmunoassays (RIA), enzyme-linked immunosorbent assays (ELISA) or immunofluorescence.
- all of the immunological detection methods proposed to date include a step which consists in incubating a determined volume - which is generally at least 500 ⁇ l - of the sample to be analyzed with a specific reagent, for each substance sought.
- a step which consists in incubating a determined volume - which is generally at least 500 ⁇ l - of the sample to be analyzed with a specific reagent, for each substance sought.
- the problem therefore arises of providing a method which makes it possible to detect the presence of a substance in a sample with both very high sensitivity and high specificity, while offering the possibility of performing as many analyzes that are necessary from micro-samples, to overcome, moreover, the constraints of conservation, shipping and transport of samples presented by the methods currently used for the detection of a substance, and which can, in addition , be implemented easily and quickly without requiring heavy and expensive equipment.
- the present invention therefore has for its object a method for amplifying the formation of complexes between the two elements of a ligand / receptor pair by reaction of these two elements, which method is characterized in that it comprises:
- the term “ligand / receptor couple” means any couple formed by two substances capable of recognizing each other specifically, of binding and reacting together by forming complexes.
- it may be an antigen / antibody or hapten / antibody pair in which the ligand (the antigen or the hapten) may be a biological compound (protein, enzyme, hormone, toxin, tumor marker, etc.). .), a chemical compound (active drug ingredient for example), or a cellular or particulate antigen (cell, bacteria, virus, fungus, ...)
- the receptor can be a soluble antibody or a membrane receptor. It can also be a couple formed by an enzyme and its specific substrate.
- the term “electromagnetic signal characteristic of the biological activity” of an element means the electromagnetic signal picked up from a biologically active element such as a substance, a cell or a microorganism, etc. , or a material containing this element such as a purified preparation, a biological sample, an organ or a living being, as has been described in International Application WO 94/17406 in the name of J. BENVENISTE.
- the term “electromagnetic signal characteristic of the biological activity” of an element also means the signals derived from a signal as defined above by digitization and / or signal processing.
- the term “characteristic" is used in the sense that the electromagnetic signal picked up contains information characterizing the fact that the material from which this signal is picked up exhibits the biological activity in question.
- a material containing a plurality of biologically active elements presents the biological activity of each of the elements which it contains.
- the reaction between the ligand and the receptor is carried out using two reagents containing the ligand and the receptor respectively, and one is applied to one and / or the other of these reagents, an electromagnetic signal to be tested and suspected of comprising the electromagnetic signal characteristic of the biological activity of this ligand and / or of this receptor.
- the term “reagent” denotes any preparation whose composition is known, which contains the ligand or receptor in an amount also known and which is present either in a dry form such that a lyophilisate to be reconstituted in a solvent, either in a liquid form such as a solution or a suspension, the ligand or the receptor being able to be fixed on a solid phase (particles or beads of latex, glass or polystyrene, ...
- the application, to one and / or the other of the reagents, of the electromagnetic signal to be tested is carried out by exposure of a solution or of a suspension containing one and / or the other of these reagents, to this electromagnetic signal.
- the application, to one or the other of the reagents, of the electromagnetic signal to be tested is carried out by dilution of a solution or of a suspension comprising one and / or the other of these reagents , in a solvent having been previously exposed to this electromagnetic signal.
- the application, to one and / or the other of the reagents, of the electromagnetic signal to be tested is carried out by dissolution or suspension of this or these reagents in a solvent having been previously exposed to this electromagnetic signal.
- This arrangement is of particular interest when the reagents which it is desired to use are in a dehydrated form such as a lyophilisate, since it is then possible to apply the electromagnetic signal to be tested to them simply by dissolving them or by suspending as appropriate, in a volume of a solvent having been previously exposed to this electromagnetic signal.
- the electromagnetic signal to be tested is an electromagnetic signal picked up from a sample to be analyzed and suspected of containing this ligand and / or this receptor, this sample being able as well to come from a biological sample (blood, urine, milk, ...) than a non-biological sample (water, food product, pharmaceutical product, cosmetic product, ).
- the electromagnetic signal to be tested can also be an electromagnetic signal radiated by a source of electromagnetic radiation, in particular a source suspected of emitting harmful radiation for living beings of the high-voltage line, transformer, electric motor, microwave oven type. waves, particle accelerator, X-ray source, ... Similarly, the 7
- electromagnetic signal to be tested can come from the acquisition of a mechanical signal like vibrations, an electrostatic signal or other.
- the reaction between the ligand and the receptor is carried out by bringing into contact a sample to be analyzed and suspected of containing the ligand and / or the receptor, with a reagent containing either the receptor or the ligand (depending on the substance suspected to be present in the analytical sample with which it is desired to react this reagent), and the characteristic electromagnetic signal is applied to this sample and / or to this reagent of the biological activity of said ligand and / or of said receptor.
- the application, to the sample to be analyzed, of the electromagnetic signal characteristic of the biological activity of the ligand and / or of the receptor is carried out by exposure of this sample to this or these electromagnetic signals, or by diluting this sample in a solvent having been previously exposed to the said electromagnetic signal (s).
- the application, to the reagent intended to react with the sample to be analyzed, of the electromagnetic signal characteristic of the biological activity of the ligand and / or of the receptor is carried out by exposure of a solution or suspension containing this reagent to this or these electromagnetic signals, or by dilution of such a solution or suspension in a solvent having been previously exposed to this or these electromagnetic signals, or also by dissolution or suspension of this reagent in a solvent having been previously exposed to said electromagnetic signal (s).
- the electromagnetic signal characteristic of the biological activity of the ligand and / or the receptor is applied to the sample to be analyzed and to the reagent intended to react with it, by exposure of a solution or a suspension containing this sample and this reagent to this or these electro- 8
- this second embodiment there is applied to the sample to be analyzed and / or to the reagent intended to react with it, both the electromagnetic signal characteristic of the biological activity of the ligand and the electromagnetic signal characteristic of the biological activity of the receptor.
- both the electromagnetic signal characteristic of the biological activity of the ligand and the electromagnetic signal characteristic of the biological activity of the receptor are applied simultaneously to these elements.
- the solvent having been exposed beforehand to the electromagnetic signal (s) is advantageously water or physiological solute.
- the reagents capable of being used in the amplification process in accordance with the invention and containing the ligand on the one hand, and the receptor on the other hand may also be ready-to-use reagents commercially available. as reagents specially designed and prepared for the implementation of this process.
- these reagents can be in different forms (dry, liquid, etc.), they can also be coupled to a marker such as a radioactive isotope, an enzyme, a fluorescent substance, a colored particle, biotin or an organometallic compound capable of detecting and / or measuring the ligand-receptor complexes resulting from the reaction between the ligand and the receptor.
- the amplification method advantageously further comprises a step of acquiring the electromagnetic signal characteristic of the biological activity of one and / or the other of the elements of the ligand / receptor pair.
- ligand / receptor can come either from a sample to be analyzed and suspected of containing this or these elements, or from a source of electromagnetic radiation or from the acquisition of a mechanical (vibration), electrostatic or other signal, or even from reagents containing the ligand or the receptor in solution or in suspension in a solvent, according to the embodiments of the amplification process in accordance with the invention.
- the amplification method in accordance with the invention also comprises a step of recording and restoring information representative of the electromagnetic signal characteristic of the biological activity of one and / or the other elements of the ligand / receptor couple.
- the electromagnetic signal characteristic of the biological activity of an analytical sample once recorded, can be kept indefinitely and used as many times as necessary.
- the electromagnetic signals characteristic of the biological activity of the ligand and of the biological activity of the receptor, picked up from reagents can be recorded once and for all and be used to carry out a plurality of reactions involving this ligand. and this receiver.
- the amplification method advantageously further comprises a step of detecting the complexes resulting from the reaction between the ligand and the receptor and, optionally, of measuring these complexes.
- This step can, advantageously, be completed by the comparison of the results obtained with those observed for a reaction serving as a "control", that is to say a reaction carried out with the same ligand / receptor pair and under the same reaction conditions, but without application of an electromagnetic signal to the elements of this couple, whether it is before, simultaneously or after they are brought into contact.
- the detection and / or measurement of ligand-receptor complexes can be carried out by all the methods conventionally used to reveal and quantify the formation of such complexes.
- the ligand is an antigen or a hapten
- the receptor is an antibody or a membrane receptor directed specifically against this ligand.
- the reaction between this ligand and this receptor is a reaction revealed by agglutination, because of its simplicity and of its speed of execution.
- the present invention also relates to a method for detecting the presence of a substance corresponding to one of the two elements of a ligand / receptor pair in an analytical sample, characterized in that it comprises the implementation work of an amplification process as defined above.
- this detection method comprises:
- obtaining an amplification of the formation of ligand-receptor complexes between the two reagents compared to a "control" reaction reflects the presence, in the electromagnetic signal, of the biological activity of the 'sample to be analyzed, of the electromagnetic signal characteristic of the biological activity of the sought substance and, consequently, translates the presence, in this sample, of the sought substance.
- the concentrations of the ligand and of the receptor reacted are advantageously chosen so as to be sufficient to lead to the production of ligand-receptor complexes detectable in the absence of the application of the electromagnetic signal characteristic of the biological activity of said sample, but lower than the concentrations likely to lead to saturation of the reaction between this ligand and this receptor.
- this detection method it comprises:
- obtaining ligand-receptor complexes reflects the presence of the substance sought in the analytical sample.
- This second preferred embodiment is of particular interest for detecting the presence of substances in samples, which are known to be not detectable or only very difficult by the other available detection methods, because these substances are generally present at very low concentrations, even in trace amounts.
- the method for detecting the presence of a substance in an analytical sample in accordance with the invention has many advantages.
- This method can be used to detect any substance capable of specifically binding to and reacting with another substance, it being understood that the term "substance” as it is used here, denotes a biological compound as well, a chemical compound, a cell than a microorganism of the bacteria, virus or fungus type, knowing in particular that for any hapten, protein or protein complex, it is possible to find on the market or to have the corresponding antibodies produced.
- this process finds, in particular, application in biological diagnosis, whether in human or veterinary medicine, or for bacteriological quality control in industries such as the pharmaceutical industry, the cosmetic industry, the productions and food industries.
- the present invention also relates to a method for detecting the presence, in an electromagnetic signal to be tested, of a signal 14
- the electromagnetic characteristic of the biological activity of a substance corresponding to one of the two elements of a ligand / receptor pair which method is characterized in that it comprises the implementation of an amplification method such as defined above.
- the electromagnetic signal to be tested is the electromagnetic signal radiated by a source of electromagnetic radiation.
- the invention also relates to an apparatus for detecting the presence of a substance corresponding to one of the two elements of a ligand / receptor pair in an analytical sample, which apparatus is characterized in that it puts implementing a method according to the invention and in that it comprises: a) means for receiving the analytical sample and a reagent containing either the receptor or the ligand, enabling them to be brought into contact under proper conditions to allow their reaction; b) an electromagnetic signal source characteristic of the activity of the ligand and / or of the receptor; c) means for applying the signal delivered by said source of electromagnetic signal to the sample and / or the reagent; and d) means for detecting and / or measuring the ligand-receptor complexes formed during the reaction between the sample and the reagent.
- the invention further relates to an apparatus for detecting the presence of a substance corresponding to one of the two elements of a ligand / receptor pair in an analytical sample, which apparatus is characterized in that it implements a method according to the invention and in that it comprises: a) means for receiving two reagents containing the ligand and the receptor respectively, allowing them to be brought into contact under conditions suitable for allowing their reaction; b) means for acquiring an electromagnetic signal from the analytical sample; 15
- the detection means comprise optical detection means.
- these devices include an enclosure provided with electrical and magnetic shielding surrounding said receiving means.
- the invention also comprises other provisions which will emerge from the additional description which follows, which relates to exemplary embodiments of signal acquisition, recording and application devices capable of be used according to the invention as well as to examples of experiments which have made it possible to validate the amplification process which is the subject of the present invention, and which refers to the appended drawings in which: - Figure 1 represents a diagram of a first embodiment of a signal acquisition device capable of being used according to the present invention;
- FIG. 2 shows a diagram of a second embodiment of a signal acquisition device capable of being used according to the present invention
- FIG. 3 shows a diagram of a first embodiment of a signal recording device capable of being used according to the present invention
- FIG. 4 shows a diagram of a second embodiment of a signal recording device capable of being used according to the present invention
- FIG. 5 shows a diagram of an exemplary embodiment of a signal application device capable of being used in accordance with the invention
- FIG. 6 shows a black and white image of 320 pixels x 240 pixels of the agglutinates formed during an agglutination reaction between the antigen 16
- FIG. 7 shows a black and white image of 320 pixels x 240 pixels of agglutinates formed during an agglutination reaction between the polysaccharide antigen of Escherichia coli Kl and an antibody directed against this antigen, after application of the signal electromagnetic characteristic of the biological activity of Escherichia coli;
- - Figure 8 shows a black and white image of 320 pixels x 240 pixels of the agglutinates formed during an agglutination reaction between the polysaccharide antigen of Escherichia coli Kl and an antibody directed against this antigen, after simultaneous application of the electromagnetic signals characteristic of the biological activity of Streptococcus and the biological activity of an antibody directed against Escherichia coli;
- - Figure 9 shows a black and white image of 320 pixels x 240 pixels of agglutinates also formed during an agglutination reaction between the polysaccharide antigen of Escherichia coli Kl and an antibody directed against this antigen, after simultaneous application electromagnetic signals characteristic of the biological activity of Escherichia coli and the biological activity of its specific antibody;
- FIG. 10 shows a diagram of an exemplary embodiment of a device for detecting and / or measuring ligand-receptor complexes capable of being used according to the present invention.
- each image of Figures 6 to 9 corresponds to an area of approximately 2 mm x 1.5 mm of the support on which the agglutination reactions were carried out. 17
- Figure 1 there is shown schematically a first embodiment of a device for acquiring the electromagnetic signal characteristic of the biological activity of a substance 1 arranged in a container 3, for example a test tube.
- a sensor 5 typically a coil of the "telephone sensor” type marketed with a view to being applied to a telephone earpiece and connected to a tape recorder, is applied against the container 3.
- the container 3 can also be formed by a biological wall, in particular the skin of a living being. In such a case, the acquisition of the electromagnetic signal is carried out in a non-invasive manner.
- the signal collected by the coil 5 is advantageously amplified by an amplifier 7 and is available at an output terminal 9. Without this being in any way limiting in the example illustrated, a first end of the coil 5 is connected to the input of the amplifier-preamplifier 7, the opposite end being connected to a ground 11.
- the coil 5 is a commercial telephone sensor having a length of 6 mm, an internal diameter of 6 mm containing a metal core, an external diameter of 16 mm and an impedance of 300 ⁇ .
- FIG. 2 there is shown schematically the preferred embodiment of a device for acquiring the electromagnetic signal characteristic of the biological activity of a substance 1 contained in a container 3, in which the device preferably comprises , in an enclosure 13 provided with an electric and magnetic shielding, a transducer 15 for irradiating said substance 1 supplied by a generator 17.
- the transducer 15 comprises, for example, a coil, advantageously supplemented by waveguides, for example, an air gap (not shown) placed in contact with the outer walls of the container 3.
- the generator 17 generates a low frequency sinusoidal signal, low frequency square signals, pink noise or, advantageously, white noise.
- the spectrum of the excitation signal supplying the coil 15 corresponds substantially to the spectrum of audible frequencies (20 Hz - 20,000 Hz).
- the generator 17 can be an analog signal generator of known type or, for example, a read-only memory (ROM, PROM, EPROM, EEPROM in English terminology) containing the digital signal of the desired noise and which is connected to a digital converter - analog, or the line output of a sound card from a multimedia microcomputer.
- ROM read-only memory
- PROM PROM
- EPROM Erasable programmable read-only memory
- EEPROM electrically erasable programmable read-only memory
- the acquisition sensor 5 can comprise a coil similar to the coil 5 of the device of FIG. 1 or, advantageously, a coil of small diameter connected by an electromagnetic waveguide to the wall of the container 3.
- the signal received by the sensor 5 is available at an output terminal 9 of an amplifier-preamplifier 7.
- the signal available on terminal 9 can be directly applied to the substance or substances to be irradiated, in particular to the ligand, to the receptor or to the ligand / receptor pair (in particular using the device illustrated in FIG. 5 and described below) .
- the signal can be recorded in analog by a signal recorder 19 ( Figure 3), in particular on magnetic tape 21 adapted to the frequencies of the signal received. For acoustic frequencies, it is possible in particular to use a tape recorder.
- the output terminal 9 of the signal acquisition device of Figures 1 or 2 is connected to the microphone input or to the line input of such a tape recorder. During reading, the signal is collected at an output terminal 9 ′, in particular at the line output or at the speaker output of the tape recorder 19.
- digital recording is carried out after analog-digital conversion of the signal.
- a microcomputer 23 illustrated in Figure 4 provided with a signal acquisition card 25. It is for example a PC type computer, running under the operating system 19
- the acquisition card 25 comprises an analog converter 39 preferably having a resolution greater than 10 bits, for example equal to 12 bits, as well as a sampling frequency twice the maximum frequency than the we want to be able to digitize for signal processing. In the acoustic frequencies, the sampling frequency is advantageously substantially equal to 44 kHz.
- a sound card for a microcomputer is advantageously used, for example the Soundblaster 16 card or the Soundblaster 32 card sold by the CREATIVE LABS Company.
- the computer 23 provided with the reproduction acquisition card 25, in particular with a Soundblaster card 32 can advantageously replace the signal generator 17 of FIG. 2.
- the output 9 of the signal acquisition devices of Figures 1 is connected to the input 9 of the analog-digital converter 39 of the card 25 of the computer 23; the signal is acquired for a period of time, for example, between 1 and 60 s and the digital file is recorded in a mass memory 33, for example in the form of a sound file in .WAV format.
- This file may possibly undergo digital processing, such as for example digital amplification for signal level calibration, filtering for the elimination of unwanted frequencies, or be transformed into its spectrum by a discrete FOURIER transform, preferably by l 'fast FOURIER transform algorithm (FTT in English terminology).
- the sound reproduction time can be increased by repeating a fragment or the entire original sound file several times in a file.
- the file possibly processed is transformed by a digital-analog converter 41 of the card 25 (or of a separate card), which delivers on the output 9 'the analog electromagnetic signal characteristic of the biological activity to be applied, according to the amplification process in accordance with 20
- the invention for example to an aliquot 43 of a first reagent and to an aliquot 45 of a second reagent, as illustrated in FIG. 5.
- the application of the signal to these aliquots is carried out prior to their mixing.
- the support on which these aliquots are deposited for example, a blade 47 provided with a capillary 49 in the form of a serpentine, is arranged in an electromagnetic field radiated by a transducer 51, typically a coil of which a first end 9, 9 'is connected to the output 9 of an acquisition device of Figures 1 or 2 or to the output 9 'of a recording device of Figures 3 or 4.
- the end of the coil opposite to the connection terminal 9, 9 ' is, for example, connected to ground 11.
- the transducer 51 advantageously comprises a coil, of horizontal axis allowing the introduction of the blade 47.
- the coil has, for example, a length of 120 mm, an internal diameter of 25 mm, an outside diameter of 28 mm, has 631 turns of a wire with a diameter of 0.5 mm and a resistance of 4.7 ⁇ .
- the electrical signal applied to this coil 51 will have an amplitude of 2 effective volts.
- the amplification process in accordance with the invention was validated by testing the effects, on an agglutination reaction between the polysaccharide antigen of Escherichia coli Kl and an antibody directed against this antigen:
- the acquisition of the electromagnetic signal characteristic of the biological activity of Streptococcus was carried out by placing in the center of the enclosure 13 a tube containing 1 ml of an aqueous suspension of previously formulated Streptococcus bacteria (6.10 ⁇ bacteria / ml).
- a transducer consisting of a coil measuring 120 mm long and 25 mm internal diameter, having 631 turns and a resistance of 4.7 ⁇ , is placed in an oven heated to 37 ° C, and connected to the converter output 9 ' digital-analog 41 of a Soundblaster card of a computer 23 reproducing the recording files constituted by the electromagnetic signals which it is desired to apply, the time necessary to bring this transducer to the temperature of 37 ° C;
- the desired electromagnetic signal (s) are applied to the two drops of reagents thus deposited by placing the slide in the center of the transducer for approximately 2 min and by restoring a sound file using the computer 23 of FIG. 4;
- this reading is performed by analysis using a software of analysis and image processing implemented on a PC-type computer 23 'running the WINDOWS ® operating system 95
- MICROSOFT MICROSOFT
- the computer determines an agglutination index (I) calculated according to the formula:
- This agglutination index is higher the greater the size of the agglutinates formed during the agglutination reaction. Amplification is considered positive when, during an experiment, the application of the electromagnetic signals characteristic of the biological activity of Escherichia coli and / or the biological activity of its specific antibody leads to obtaining agglutination index at least 40% greater than the maximum agglutination index obtained, under the same conditions, and for example on 3 experiments, after application of the electromagnetic signal characteristic of the biological activity of Streptococcus.
- Table 1 below presents the agglutination indexes (I) obtained in a first series of tests aimed at comparing the effects of the application of the electromagnetic signal characteristic of the biological activity of Escherichia coli with those observed after application, under the same reaction conditions, of the electromagnetic signal characteristic of the biological activity of Streptococcus, and this, for 24
- FIGS. 6 and 7 show, by way of example, images of the agglutinates formed on the one hand, after application of the electromagnetic signal characteristic of the biological activity of Streptococcus (FIG. 6) and, on the other hand, after application of the electromagnetic signal characteristic of the biological activity of Escherichia coli ( Figure 7). These images correspond respectively to the agglutination indexes of 32 and 117 which are reported in the 5th row of results in Table 1.
- Table 2 below presents the agglutination index (I) obtained in a second series of experiments in which the effects of the simultaneous application of the electromagnetic signal characteristic of biological activity d 'Escherichia coli and the electromagnetic signal characteristic of the biological activity of the antibody directed against Escherichia coli, were compared with those of the simultaneous application, under the same reaction conditions, of the electromagnetic signal characteristic of the biological activity of Streptococcus and the electromagnetic signal characteristic of the activity 25
- Antibody signal Anti-E antibody signal. anti-E coli. coli
- Figures 8 and 9 show, also by way of example, images of the agglutinates which correspond respectively to the agglutination indexes of 71 and 247 reported in the second row of results in Table 2. All these results clearly show the aptitude presented by the electromagnetic signal characteristic of the biological activity of an element of a ligand / receptor pair, to amplify the formation of the complexes formed by the reaction between this ligand and this receptor, in a very specific way, since the electromagnetic signal characteristic of the biological activity of a biologically active element, but foreign to this reaction does not produce an amplification effect.
- Table 3 presents the agglutination indexes (I) obtained in three series of tests.
- the size of the agglutinates formed during the reaction between the polysaccharide antigen of Escherichia coli Kl and its specific antico ⁇ s is substantially higher in the case where the electromagnetic signal applied during this reaction has been captured from a sample of applesauce contaminated with Escherichia coli bacteria.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Microbiology (AREA)
- Cell Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Biotechnology (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9804924 | 1998-04-20 | ||
| FR9804924A FR2777656B1 (fr) | 1998-04-20 | 1998-04-20 | Procede d'amplification de la formation de complexes ligands-recepteurs et ses utilisations |
| PCT/FR1999/000915 WO1999054731A1 (fr) | 1998-04-20 | 1999-04-19 | Procede d'amplification de la formation de complexes ligands-recepteurs et ses utilisations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1073900A1 true EP1073900A1 (fr) | 2001-02-07 |
Family
ID=9525447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99914611A Withdrawn EP1073900A1 (fr) | 1998-04-20 | 1999-04-19 | Procede d'amplification de la formation de complexes ligands-recepteurs et ses utilisations |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1073900A1 (fr) |
| AU (1) | AU3336299A (fr) |
| FR (1) | FR2777656B1 (fr) |
| WO (1) | WO1999054731A1 (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6995558B2 (en) | 2002-03-29 | 2006-02-07 | Wavbank, Inc. | System and method for characterizing a sample by low-frequency spectra |
| US6724188B2 (en) | 2002-03-29 | 2004-04-20 | Wavbank, Inc. | Apparatus and method for measuring molecular electromagnetic signals with a squid device and stochastic resonance to measure low-threshold signals |
| BR0305669A (pt) | 2002-04-19 | 2004-10-19 | Wavbank Inc | Detecção de amostra com base em componentes espectrais de baixa frequência |
| CA2574616C (fr) | 2004-07-27 | 2019-04-30 | Nativis, Inc. | Systeme et procede de production de signaux chimiques ou biochimiques |
| CA2670306A1 (fr) * | 2006-11-20 | 2008-05-29 | Nativis, Inc. | Appareil et procede pour la transduction d'un systeme in vitro ou de mammifere au moyen d'un signal basse frequence |
| US8405379B1 (en) | 2008-09-18 | 2013-03-26 | Luc Montagnier | System and method for the analysis of DNA sequences in biological fluids |
| WO2014145284A2 (fr) | 2013-03-15 | 2014-09-18 | Nativis, Inc. | Système de commande et bobines souples pour l'administration d'un traitement, par exemple pour le traitement du cancer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634381B1 (fr) * | 1988-07-25 | 1990-09-07 | Morez Jean Bernard | Procede pour la fabrication de medicaments homeopathiques en une seule operation quelque soit la dilution choisie |
| FR2700628B1 (fr) * | 1993-01-21 | 1995-03-24 | Benvenistre Jacques | Procédé et dispositif de transmission sous forme de signal de l'activité biologique d'une matière porteuse à une autre matière porteuse, et de traitement d'un tel signal, et produit obtenu avec un tel procédé. |
-
1998
- 1998-04-20 FR FR9804924A patent/FR2777656B1/fr not_active Expired - Fee Related
-
1999
- 1999-04-19 WO PCT/FR1999/000915 patent/WO1999054731A1/fr not_active Ceased
- 1999-04-19 AU AU33362/99A patent/AU3336299A/en not_active Abandoned
- 1999-04-19 EP EP99914611A patent/EP1073900A1/fr not_active Withdrawn
Non-Patent Citations (4)
| Title |
|---|
| BENVENISTE J.: "Ma vérité sur la << mémoire de l'eau >>", April 2005, ALBIN MICHEL, PARIS, FRANCE, ISBN: 2-226-15877-4, 23332 * |
| Letter from Professor Luc Montagnier dated 25.01.2006 * |
| Préface par le Professeur Brian D. Josephson de l'ouvrage du Professeur Jacques Benveniste publié à titre posthume. * |
| See also references of WO9954731A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2777656A1 (fr) | 1999-10-22 |
| WO1999054731A1 (fr) | 1999-10-28 |
| FR2777656B1 (fr) | 2000-06-16 |
| AU3336299A (en) | 1999-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2783605A1 (fr) | Procede, systeme et dispositif pour produire a partir d'une substance des signaux, notamment des signaux electriques, caracteristiques de l'activite biologique et/ou chimique de ladite substance | |
| US3960491A (en) | Method and apparatus for detecting immunologically reactive biological particles | |
| FR2573872A1 (fr) | Procede et systeme d'appareillage pour dosage immunologique en phase solide | |
| FR2997194A1 (fr) | Dispositif pour la determination d'au moins un analyte susceptible d'etre contenu dans un echantillon liquide | |
| EP3692367B1 (fr) | Moyen de diagnostic pour la détection et/ou la quantification d'une pluralité d'analytes présents dans un échantillon | |
| EP1112748A2 (fr) | Procédé et dispositif de transmission sous forme de signal de l'activité biologique d'une matière porteuse à une autre matière porteuse, et de traitement d'un tel signal, et produit obtenu avec un tel procédé | |
| FR2881828A1 (fr) | Methode de mesure quantitative par immunochromatographie, d'analytes dans un echantillon liquide | |
| EP0311492A2 (fr) | Trousse et méthode de dosage immunométrique applicables à des cellules entières | |
| EP1073900A1 (fr) | Procede d'amplification de la formation de complexes ligands-recepteurs et ses utilisations | |
| Pizzi et al. | Next-generation dried blood spot samplers for protein analysis: describing trypsin-modified smart sampling paper | |
| Zhao et al. | Comprehensive SERS–LFIA Platform for Ultrasensitive Detection and Automated Discrimination of Chloramphenicol Residues in Aquatic Products | |
| EP0104101A1 (fr) | Réactif permettant un dosage de très haute sensibilité de l'antigène caractéristique du virus de l'hépatite B dans les liquides biologiques humains | |
| JP4959330B2 (ja) | きわめて少量の粒子を検出するための方法およびデバイス | |
| Tarimeri et al. | A high sensitive, reproducible and disposable immunosensor for analysis of SOX2 | |
| JP6366047B2 (ja) | 抗体抗原反応評価方法 | |
| FR2574553A1 (fr) | Methode pour l'evaluation de parametres cliniques par prelevement direct de substances biologiques et dispositif pour sa mise en oeuvre | |
| EP1700128B1 (fr) | Methode de diagnostic serologique et determination de statut vaccinal comprenant differents controles | |
| Wąsowicz et al. | Use of a novel technique, solid phase microextraction, to measure tranexamic acid in patients undergoing cardiac surgery | |
| US11125753B2 (en) | Labeling using an optical thickness measurement of a biosensor | |
| RU2332666C1 (ru) | Способ диагностики отравления наркотическими и/или сильнодействующими веществами | |
| CA2473027A1 (fr) | Procede d'obtention d'un systeme d'etalonnage | |
| Huang et al. | Site-directed immobilization antibody for alpha-fetoprotein detection by optical biosensor | |
| Min et al. | Biosensors based on Ion-Sensitive Field-Effect Transistors for HLA and MICA antibody detection in kidney transplantation | |
| BRITO et al. | Effect of time and storage condition on the performance of an electrochemical immunosensor for Salmonella | |
| WO2005012908A1 (fr) | Procede d’obtention d’un systeme d’etalonnage unique applique au dosage multiparametrique d’anticorps, preferentiellement d’au moins des anticorps anti-gliadine et anticorps anti-transglutaminase |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20001016 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| 17Q | First examination report despatched |
Effective date: 20040629 |
|
| APBN | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2E |
|
| APBR | Date of receipt of statement of grounds of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA3E |
|
| APAF | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNE |
|
| APBT | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9E |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20070613 |
|
| R18D | Application deemed to be withdrawn (corrected) |
Effective date: 20061101 |