WO2002009877A1 - Dispositif pour l'amplification en châine thermo-dependante de sequences d'acides nucleiques cibles - Google Patents
Dispositif pour l'amplification en châine thermo-dependante de sequences d'acides nucleiques cibles Download PDFInfo
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- WO2002009877A1 WO2002009877A1 PCT/FR2001/002385 FR0102385W WO0209877A1 WO 2002009877 A1 WO2002009877 A1 WO 2002009877A1 FR 0102385 W FR0102385 W FR 0102385W WO 0209877 A1 WO0209877 A1 WO 0209877A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/50273—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the means or forces applied to move the fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5025—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures for parallel transport of multiple samples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502715—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/52—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0803—Disc shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
- B01L2300/0864—Configuration of multiple channels and/or chambers in a single devices comprising only one inlet and multiple receiving wells, e.g. for separation, splitting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1805—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0406—Moving fluids with specific forces or mechanical means specific forces capillary forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0487—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0487—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics
- B01L2400/049—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/52—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples
- B01L7/525—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples with physical movement of samples between temperature zones
- B01L7/5255—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples with physical movement of samples between temperature zones by moving sample containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/54—Heating or cooling apparatus; Heat insulating devices using spatial temperature gradients
Definitions
- the present invention relates to the field of genetics.
- the present invention relates to a device for the amplification of target nucleic sequences, reaction cartridges usable in this device, and modes of use of this device.
- the object of the present invention is in particular to allow the detection and, where appropriate, the quantification in real time, of target nucleic acid sequences in one or more samples.
- Detection of target nucleic acid sequences is a technique that is increasingly used in many fields, and the range of applications of this technique is expected to widen as it becomes more reliable, more economical and more fast.
- the detection of certain nucleic acid sequences allows in certain cases a reliable and rapid diagnosis of viral or bacterial infections.
- the detection of certain genetic particularities can make it possible to identify susceptibilities to certain diseases, or to establish an early diagnosis of genetic or neoplastic diseases.
- the detection of target nucleic sequences is also used in the food industry, in particular to ensure the traceability of products, to detect the presence of genetically modified organisms and identify them, or to carry out sanitary control of food.
- Detection methods based on nucleic acids almost systematically involve a molecular hybridization reaction between a target nucleic sequence and one or more sequences nucleic acids complementary to said target sequence. These methods have many variants, such as the techniques known to those skilled in the art under the terms “transfer techniques” (blot, dot blot, Southern blot, Restriction Fragment Length Polymorphism, etc.), or even like miniaturized systems on which the sequences complementary to the target sequences are prefixed (“biochips"). In the context of these techniques, the complementary nucleic sequences are generally called probes.
- Another variant which can constitute in itself the basis of a diagnostic process or be only an additional step in one of the techniques mentioned above (in particular in order to increase the concentration of the target sequence and therefore the sensitivity of the diagnosis), consists in amplifying the targeted nucleic acid sequence.
- ACP Amplification in Chain by Polymerase
- PCR PCR Reaction
- PCR reactions involve a repetition of cycles, the number of which generally varies from 20 to 50, and which are each composed of three successive phases, namely: denaturation, hybridization, elongation.
- the first phase corresponds to the transformation of double-stranded nucleic acids into single-stranded nucleic acids
- the second phase to molecular hybridization between the target sequence and the primers complementary to said sequence
- the third phase to the elongation of the hybridized complementary primers to the target sequence, by DNA polymerase.
- These phases are carried out at specific temperatures: generally 95 ° C for denaturation, 72 ° C for elongation, and between 30 ° C and 65 ° C for hybridization, depending on the hybridization temperature (Tm) of the primers. used. It is also possible to perform the hybridization and elongation stages at the same temperature (generally 60 ° C).
- a PCR reaction therefore consists of a series of repetitive thermal cycles during which the number of target DNA molecules serving as template is theoretically doubled at each cycle.
- the PCR yield is less than 100%, so that the quantity of product X n obtained after n cycles is:
- X n - ⁇ is the quantity of product obtained in the previous cycle, and r n the yield of the PCR in cycle n (0 ⁇ r n ⁇ 1).
- the yield r decreases during the PCR reaction, due to several factors, such as a limiting quantity of at least one of the reagents necessary for the amplification, the inactivation of the polymerase by its repeated passages at 95 ° C, or its inhibition by the pyrophosphates produced by the reaction.
- log (X n ) log (X 0 ) + n log (1 + r)
- the measurement in real time, of the quantity of product obtained can therefore make it possible to know the initial concentration of matrix, which is particularly useful in a large number of applications, for example for measuring the viral load of a patient, or still to know the variability of a transcriptome.
- PCRs involve reaction volumes ranging from 2 to 50 ⁇ l and are carried out in tubes, microtubes, capillaries or systems known to those skilled in the art under the term "microplates" (in fact sets of integral micro tubes).
- microplates in fact sets of integral micro tubes.
- Random Amplified Polymorphism DNA either by the use of specific primers but in greater number, each pair of primers used allowing the amplification of a target sequence.
- These multiplex amplifications correspond to special cases and are not the norm. Of moreover, they do not guarantee the absence of interactions from one amplification reaction to another, and for reasons in particular of possible hybridizations between the primers, can only be very limited in the number of target sequences amplified by container.
- probes that can be used to carry out kinetic PCRs include the TaqMan TM system (ABI ® ), the AmpliSensor TM system (InGen), and the Sunrise TM system (Oncor ® , Appligène ® ).
- the most commonly used system is the Taq Man TM system.
- This process combines the DNA polymerase and 5 '- »3' nuclease activities of Taq polymerase during PCR. Its principle is as follows: in addition to the two primers of sequence complementary to that of the target to be quantified, a probe, called reporter probe, is added to the reaction medium. It has the ability to hybridize to the target in the body of the amplified sequence, but cannot be amplified itself. Indeed, a phosphoryl group added to the 3 'end of the probe prevents its extension by Taq polymerase. A fluorescein derivative and a rhodamine derivative are incorporated into the probe, respectively at the 5 'and 3' ends. The probe is small, so the rhodamine derivative, located near the fluorescein, absorbs the energy emitted by the fluorescein subjected to an excitation source (quenching phenomenon).
- the Taq DNA polymerase attacks the probe by its 5 ′ activity nuclease, releasing the quencher group and thus restoring the fluorescence emission.
- the intensity of the fluorescence emitted is then proportional to the quantity of PCR products formed, which makes it possible to obtain a quantitative result.
- the fluorescence emitted is proportional to the number of starting target molecules. The kinetics of fluorescence development can be followed in real time during the amplification reaction.
- a device for carrying out this technique is sold by the company Perkin-Elmer.
- This device combines a thermocycler and a fluorimeter. It is capable of detecting the increase in fluorescence generated during a quantification test according to the TaqMan TM process, this thanks to optical fibers located below each tube and connected to a CCD camera which detects, in real time , the signal emitted by the fluorescent groups released during the PCR.
- the quantitative data are deduced from the determination of the cycle at which the signal of the amplification product reaches a certain threshold determined by the user.
- the objective of the present invention is to propose such a system which makes it possible to considerably reduce the number of manipulations necessary for the implementation of an amplification method on a plurality of target sequences and, consequently, to reduce the time necessary for this operation.
- Another objective of the present invention is to propose such a system which minimizes the risks of contamination from one container to another.
- Another objective of the present invention is to propose such a system which reduces the volumes of reagents involved and therefore the costs.
- Another objective of the present invention is to propose such a system which optimizes a homogeneous distribution in volume and in concentration of the reagents necessary for the PCR in the containers.
- Another objective is to provide all potential users, in particular hospitals, medical analysis laboratories, food manufacturers and health control laboratories, with a device for easy use and maintenance, in order to carry out routine quantified nucleic acid amplifications in real time.
- a "nucleic acid amplification reaction” refers to any method of nucleic acid amplification known to those skilled in the art.
- ACP Amplification in Chain by Polymerase
- PCR Polymerase Chain Reaction
- TMA transcription mediated amplification
- NASBA nucleic acid sequence based amplification
- 3SR self sustained sequence replication
- amplification by strand displacement or SDA (strand displacement amplification) and LCR (ligase chain reaction).
- the initial amplification template can be any type of nucleic acid, DNA or RNA, genomic, plasmid, recombinant, cDNA, mRNA, ribosomal RNA, viral RNA or the like.
- a first reverse transcription step is generally carried out to obtain a DNA template. This step will generally not be mentioned in this text, because the person skilled in the art knows exactly when and how to carry it out. It is understood that the devices of the invention can be used to amplify and possibly specifically quantify RNA as well as DNA sequences.
- PCR will therefore be the generic term used to designate both the PCR proper as well as RT-PCR (Reverse Transcription - Polymerase Chain Reaction).
- One of the objectives of the present invention is to provide a new device for carrying out so-called “quantitative” amplification reactions, that is to say making it possible to determine the concentration of target sequence initially present in the reaction mixture.
- quantitative amplification reactions Several types of quantitative amplification reactions have been described. We can distinguish quantitative amplifications based on the use of an external standard, competitive amplifications, using an internal standard, and finally kinetic amplifications, the principle of which was mentioned above, and which consist in measuring in real time, increasing the amount of the target sequence.
- This type of amplification will be designated here indifferently under the terms “kinetic amplification (of nucleic acids)” “kinetic PCR”, “amplification (of nucleic acids) quantified in real time", or even “PCR in real time”. The terms in parentheses are sometimes omitted.
- the term "reagent must be understood broadly, as designating any element necessary either for the amplification reaction itself, or for its detection.
- the salts, the dNTPs, the primers or even polymerase are reagents necessary for PCR.
- a fluorescent intercalator, or a probe are here considered as reagents participating in the detection of amplified products, although they do not react literally.
- Figure 1 shows a side view of a simplified embodiment of the device according to the present invention
- Figure 2 shows a top view of the heating plate, in the case where the blocks (21 to 23) are disk sectors ( Figure 2A), and in the case where they consist of crown sectors
- Figure 3 shows a perspective view of a first embodiment of the cartridge (1), provided with reaction chambers and part of the displacement means; • Figure 4 shows a sectional view of this cartridge along the line AA;
- Figure 5 shows an upper view of the lower part (base) of a second particular embodiment of the cartridge according to the invention. The ratings are given for information only, and are in no way limiting;
- Figure 6 shows a sectional view of this lower cartridge, along line AA of Figure 5;
- Figure 7 shows a top view of the upper part (cover) of the cartridge shown in Figures 5 and 6; • Figure 8 shows a sectional view of this upper cartridge, along line BB of Figure 7;
- FIG. 11A represents a cartridge (1) comprising 8 sub-tanks (111 to 118) and 40 reaction chambers Only the 5 channels connected to the sub-tank 111 are shown, as well as the corresponding reaction chambers (13).
- FIG. 11B illustrates a device of the invention comprising a rectangular cartridge (1) and a heating plate (2) made up of three parallel elements (21 to 23). In FIG. 11C, the element (22) is offset relative to the others; the cartridge must therefore move along a triangle to perform the PCR cycles;
- Figure 12 shows a schematic section of a channel (12) having a "pressure drop” device.
- the invention relates firstly to any device for carrying out enzymatic and / or molecular biology reactions requiring at least two different incubation temperatures, characterized in that it comprises: at least one plate or cartridge (1) having a plurality reaction chambers (13) and a reservoir (11), said reaction chambers being connected to the reservoir by channels (12); - at least one heating plate (2) having at least two distinct zones which can be brought to at least two different temperatures; means (3) for relative movement between said cartridge and said plate, allowing a cyclic variation of the temperature of the reaction chambers.
- the temperature of each zone of the plate can be homogeneous or, if necessary, this temperature can vary according to a gradient.
- Several types of molecular biology reactions require placing the reaction mixture at different temperatures over time. This is the case for example when one wishes to inactivate an enzyme after having used it (for example, a restriction nuclease), or to test the stability of a complex.
- a complex for example, an antigen / antibody complex, or receptor / ligand
- the board is then programmed to present several temperatures in ascending order, if necessary in the form of a gradient.
- the stability of the complex is then tested by moving the cartridge on the stage, so that the temperature of the reaction chamber rises gradually, and by observing the increase in fluorescence, using excitation means. / measurement of the fluorescence placed opposite the reaction chamber.
- the increase in fluorescence then reflects the dissociation of the complex.
- the device of the invention is particularly suitable for reactions requiring a cyclic variation of the temperature of the reaction chambers, which is the case for certain nucleic acid amplification reactions, for example for polymerase chain reaction (PCR), or for the chain reaction by ligase (LCR).
- PCR polymerase chain reaction
- LCR chain reaction by ligase
- the invention therefore relates in particular to a device for the amplification in a heat-dependent chain of target nucleic acid sequences, characterized in that it comprises: at least one cartridge (1) having a plurality of reaction chambers (13 ) and a tank (11), said reaction chambers being connected to the tank by channels (12); at least one heating plate (2) having at least two distinct zones which can be brought to at least two different temperatures, corresponding to the phases of the amplification cycles of said target nucleic acids; - means (3) for relative movement between said cartridge and said plate, allowing a cyclic variation of the temperature of the reaction chambers.
- Such a system according to the invention is less complex than the systems of the prior art, in so far as the temperatures necessary for the cycles of the chain amplification are ensured by distinct zones of constant temperatures and not by a plate whose must vary the temperature.
- thermo-dependent chains require the passage of the samples at at least two temperatures.
- LCR requires at each cycle a phase at around 95 ° C to denature the target DNA, then a phase between 55 and 65 ° C (depending on the Tm of the probes), to give rise to hybridization / ligation .
- each cycle is generally broken down into three phases, namely denaturation at around 95 ° C, hybridization whose temperature depends on the Tm of the probes, and elongation, usually carried out at 72 ° C . It is however possible to carry out PCRs with simplified cycles, in which the hybridization and the elongation are carried out at the same temperature, so that each cycle requires only two different temperatures.
- the system comprises the following characteristics: primers specific to target sequences to be amplified are pre-distributed in the reaction chambers (13), the reservoir (11) is intended to receive a fluid composed in particular of a sample of nucleic acids to be analyzed and of the reagents necessary for a reaction polymerase chain amplification, with the exception of the primers, the heating plate (2) has three distinct zones which can be brought to three different temperatures, corresponding to the three phases of the polymerase chain amplification cycles.
- the reaction chambers (13) may contain reagents necessary for a real-time PCR reaction other than the primers mentioned above.
- the reaction chambers also comprise, in addition to the primers, one or more probe (s) specific for the sequence to be amplified.
- the distribution of the probes in the reaction chambers can also be such that certain chambers comprise probes specific for the sequences to be amplified and other chambers comprise control probes, not a priori recognizing the sequence to be amplified. These probes can be labeled and, if several probes are present in the same reaction chamber (for example a probe specific for the sequence to be amplified and a control probe), these probes will preferably be labeled with different fluorophores.
- additional reagents such as dNTPs or salts, are initially deposited in the reaction chambers. These reagents will then be absent, or present in a smaller quantity, in the fluid deposited in the reservoir (11).
- all the reagents necessary for the PCR reaction with the exception of the matrix, are deposited in the reaction chambers (13), and the fluid deposited in the reservoir (11) will then comprise only the sample d 'DNA (or RNA) to be amplified.
- the device of the invention is also suitable for this type of manipulation.
- the samples are deposited in the reaction chambers (13).
- the primers can be introduced into the fluid deposited in the reservoir (11), with the other reagents necessary for the PCR.
- this configuration also does not exclude that certain reagents other than the sample to be analyzed is pre-deposited in the reaction chambers (13).
- each reagent deposited in the reaction chambers (13) can advantageously be deposited therein by a simple liquid deposition, followed by drying.
- the arrival of the fluid from the reservoir (11) then allows the re-solution of these reagents.
- the quantity of each reagent deposited is calculated as a function of the volume of fluid which will penetrate into each reaction chamber (13), so that the re-solution of the reagents results in the final concentration desired for each of them.
- Cartridges as described above, in which at least part of the reaction chambers (13) comprise reagents which have been loaded therein by a liquid deposit, followed by drying, so that these reagents are put back into solution by the arrival of a fluid in these reaction chambers, are also an integral part of the invention.
- the device described above has the advantage of allowing concomitant filling of all the reaction chambers, which reduces the preparation time and the risks of contamination from one chamber to another.
- This device also has the advantage of being able to be miniaturized and of involving the use of smaller volumes of reagents than in the prior art.
- the invention makes it possible to accelerate the PCR cycles, since it is not necessary to carry out the different phases
- the invention also relates to a device for the amplification in a heat-dependent chain of target nucleic acid sequences, measured in real time, characterized in that it comprises the same elements as any of the devices described above. above, and further comprising optical means (5) for excitation / measurement of fluorescence, arranged so as to excite and measure the fluorescence of the contents of the reaction chambers at each cycle.
- the element indifferently called plate or reaction cartridge (1) is the element indifferently called plate or reaction cartridge (1).
- This element can be recyclable or, preferably, consumable, and constitutes in itself an aspect of the present invention.
- the invention also relates to a reaction cartridge comprising several reaction chambers (13) and at least one reservoir (11) and having the following characteristics: - each reaction chamber is connected to the reservoir by a channel (12) having a cross section included in a circle with a diameter of less than 3 mm, the capacity of the reservoir is less than 10 ml, the arrangement of the reaction chambers and the channels with respect to the reservoir makes it possible to distribute a fluid homogeneously in the reaction chambers, from the reservoir .
- the diameter of the channels will preferably be chosen small enough not to allow gravity distribution of the fluid present in the tank in the reaction chambers, so as to avoid non-reproducible filling of these chambers. This diameter will thus preferably be less than or equal to about 0.2 mm. Regarding this diameter, it will be noted that the section of the channels will preferably be circular but that it may also be of any other shape and in particular polygonal, the "diameter" of the channels then targeting their greatest width in section.
- the reservoir intended to receive the sample of nucleic acids and the reagents necessary for the PCR may have a variable capacity, ranging for example between approximately 0.1 ml and approximately . 1 ml.
- the cartridge preferably comprises between approximately 20 and approximately 500 reaction chambers and, more preferably, between 60 and 100 reaction chambers.
- these chambers may also vary according to the embodiments.
- these chambers have a volume of between approximately 0.2 and 50 ⁇ l, preferably between 1 ⁇ l and 10 ⁇ l.
- the junction between the channels (12) and the reservoir (11) is preferably made at the periphery of the reservoir, and the bottom of said reservoir is inclined and / or convex, so as to ensure distribution. of a fluid contained in the reservoir at the inlet of the channels.
- a cartridge according to the invention can have multiple shapes.
- this cartridge has a circular shape, the reservoir then being provided substantially in the center of the cartridge, the reaction chambers being distributed in a circle around the reservoir, and the channels connecting the reservoir to the chambers being provided essentially radially.
- Such architecture optimizes the filling of the reaction chambers from the central tank.
- the bottom of the tank (11) is conical.
- reaction chambers are provided relative to the periphery of said cartridge.
- said reaction chambers are provided relative to the periphery of said cartridge.
- such a cartridge comprises as many channels as reaction chambers.
- provision may be made for sections of channels common to several reaction chambers.
- the cartridge when it has a geometry of revolution, preferably has a diameter of between approximately 1 and 10 cm.
- a cartridge according to the invention may have a translation geometry, in which the reservoir (11) is placed on one side of said cartridge, the reaction chambers (13) are aligned on the other side of the cartridge, and the channels (12) connecting the tank to the chambers are essentially parallel to each other.
- the general shape of such a cartridge is then essentially rectangular, apart from certain protrusions and / or hollows intended to connect the cartridge to means capable of setting it in motion.
- An example of such a cartridge is shown in FIG. 11 A.
- the bottom of the tank (11) is preferably an inclined plane, which makes it possible to direct the reaction fluid towards the inlet of the channels (12).
- a variant of the cartridges of the invention described above consists in dividing the tank (11) into 2 to 20, preferably 2 to 8 sub-tanks, making it possible to analyze several samples simultaneously on a same cartridge.
- each of the reaction chambers (13) is connected to only one of these sub-tanks by a channel (12).
- An example of this variant is shown in Figure 11 A.
- the cartridge shown in this figure has eight sub-tanks numbered 111 to 118, each of these sub-tanks being connected to five reaction chambers (13) via five channels (12) . In this figure, only the channels connected to the sub-tank 111 are shown. It is important to note here that in all of the above and what follows, the "reservoir (11)" denotes both the reservoir (11) as a whole and a sub-reservoir.
- the depth of the reaction chambers can also vary depending on the embodiments of the invention. According to a preferred variant, these chambers have a depth of between approximately 0.5 mm and 1.5 mm.
- this cartridge depends on several factors and in particular on the material constituting it.
- this cartridge is preferably made of plastic, preferably polycarbonate, the physical, optical and thermal properties of which are suitable for carrying out the present invention.
- the thickness of the cartridges of the invention is preferably between 0.5 and 5 mm.
- the thickness of the "floor” of these should preferably be as small as possible. This thickness depends on the material used to make the cartridge. Preferably, it is between 0.05 and 0.5 mm, for example around 0.25 mm.
- the reaction chambers of the cartridges of the invention are preferably closed by a transparent upper wall (17), for example made of transparent plastic, in order to allow the excitation and the measurement of the fluorescence of the reaction fluid, under good conditions.
- the chambers are provided with vents (open system), allowing the air which they contain to escape when they are filled with the fluid coming from the reservoir.
- the channels (12) preferably consist of at least two parts of different diameters (121 and 122), the diameter of the second part (122) being lower than that of the first part (121), so as to create a pressure drop in the channel (12).
- the pressure drop phenomenon makes it possible to stop the progression of the fluid in the channel or channels of which the first part (121) is filled, until all channels are filled in the same way. This makes it possible to “pre-calibrate” the volumes for each channel, in order to ensure a homogeneous filling of the different reaction chambers.
- the second part of the channel (122) can consist for example of a glass capillary, of much smaller diameter than the first part (121), said capillary being included in a plastic cartridge.
- the cartridges described above intended either for use in an open system, or for use in a closed system, preferably have an opening adaptable to means (4) for modulating the pressure in the reservoir (11), making it possible to move the fluid present in the tank to the reaction chambers.
- the invention also relates to a method for filling the reaction chambers (13) in a closed system with a cartridge (1) as described in the preceding paragraph, in the variant where the reaction chambers are closed, which method comprises the following steps: at least partially fill the reservoir (11) with a fluid, connect the cartridge (1) to the means (4) for modulating the pressure, - apply a vacuum to the interior of the cartridge, then restore the pressure.
- each channel (12) is equipped with an anti-reflux cavity (123) at its junction with the tank (1 1), said anti-reflux cavity consisting of a substantially vertical channel portion, with a diameter greater than or equal to that of the channel (12).
- This variant has two main advantages. On the one hand, these anti-reflux cavities make it possible to prevent cross contamination in the event of untimely return of fluid to the reservoir (11), or in the event that all of the fluid has not engaged in the channels. On the other hand, these cavities make it possible to provide, in the devices of the invention, a plug whose serrations come to marry these vertical inlets, in order to block the channels after the addressing of the reaction fluid but before the amplification reaction.
- each of the reaction chambers (13) comprises oligonucleotides. More preferably, each of the reaction chambers (13) comprises two primers specific for a nucleic acid sequence to be amplified and, optionally, one or more labeled probe (s) specific for said sequence.
- a probe can be labeled so that its signal increases when it hybridizes to its target sequence (Sunrise TM system), or so that the elongation from a strand on which it is hybridized causes the signal to decrease or increase (AmpliSensor TM system or TaqMan TM system, respectively).
- probes in the reaction chambers makes it possible to carry out quantified amplifications in real time, with a device of the invention having means (5) for excitation / measurement of fluorescence, as described above.
- Control probes nonspecific of the sequence to be amplified, and labeled differently from the specific probes, can also be used, to detect possible contaminations.
- these different probes and primers will preferably be chosen so that their melting temperatures (Tm) be close.
- Tm melting temperatures
- the Tm of the different primers will preferably be within the same range of approximately 5 ° C.
- the various probes will preferably have a Tm comprised in the same interval of
- the probes will be chosen so that their Tm is greater than that of the primers, the difference between Tm of the different categories of oligonucleotides then preferably being of the order of 5 ° C.
- the hybridization temperature used to carry out the amplification then corresponds to the lowest of the melting temperatures of the primers.
- the reaction chambers (13) of the cartridges of the invention may also comprise, in addition to the primers and the probes, if any, one or more other reagents necessary for the PCR reaction or for measuring the amplification. They may be, for example, salts, dNTP, or a fluorescent intercalator of double stranded DNA, of the SybrGreen type (registered trademark). As mentioned above, all of these reagents are advantageously deposited at the level of the reaction chambers (13) by the deposition of a liquid solution, followed by drying.
- the cartridges are intended for the screening of a large number of samples according to a small number of criteria. This implies that the user of these cartridges can easily deposit his samples in each of the reaction chambers (13).
- the cartridge may for example have a removable cover which, when removed, gives direct access to the reaction chambers.
- Such cartridges can also be preloaded and include, at the level of the reaction chambers (13), one or more reagents necessary for amplification and / or for its detection.
- the devices of the invention mentioned above may include one or more cartridges corresponding to any of the cartridges described above.
- the separate heating zones of the heating plate (2) are preferably distributed according to disc portions
- thermoblocks are preferably large enough to also heat part of the channels, as shown for example in FIG. 11, within the framework of a rectangular cartridge.
- the number of separate heating zones can be two, three, or more.
- the platinum may have a zone at 95 ° C. for the denaturation of double-stranded nucleic acids, and a zone at 60 ° C. for the hybridization of the primers and the elongation. .
- the platinum may have a zone at 95 ° C. for the denaturation of double-stranded nucleic acids, and a zone at 60 ° C. for the hybridization of the primers and the elongation. .
- the stage will present a zone at 95 ° C (denaturation), a zone between 40 and 70 ° C (hybridization of the primers), and a zone at 72 ° C (elongation).
- the plate can have a number of zones greater than three, for example to temporarily block the reaction at some point in each cycle.
- the stage can also have a number of zones which is a multiple of two or three, so that one revolution of the cartridge corresponds to several PCR cycles.
- the relative size of the different heating zones is advantageously chosen in proportion to the desired incubation time for the reaction fluid at the temperature of said zone.
- thermoblock 21 dedicated to the denaturation step, has an area twice as small as that of the thermoblocks intended for the hybridization and elongation steps (blocks 22 and 23, respectively ).
- the plate (2) is fixed and the cartridge (1) is moved by means of the displacement means (3).
- the displacement means (3) allow the rotation of said cartridge and / or of said plate.
- a conductive element can be provided between the cartridge and the heating plate.
- said cartridge is in direct contact with said heating plate.
- said plate is advantageously provided with a coating promoting movement between said cartridge and said plate.
- a coating may for example be constituted, Teflon (registered trademark).
- the heating plate of the system can have at least two or three zones which can be brought to distinct temperatures.
- this plate is made up of two or three separate thermal blocks (“thermoblocks”) connected to means for programming their temperature.
- thermoblocks 21 to 23
- the first of these thermoblocks (21) is heated to the denaturation temperature, the second (22) to the hybridization temperature, the third (23) to the elongation temperature.
- the use of such constant temperature thermoblocks simplifies the production of the heating plate.
- the means for relative displacement of the cartridge relative to the plate can be produced in multiple forms.
- the cartridge (1) has on the bottom a central projecting part (181) comprising a notch (182), so that the projecting part (181) is embedded in the heating plate (2) and connects the cartridge (1) with the displacement means (3) at the level of a cleat or axis (32) set in motion by a micromotor (31).
- the projecting part (181) therefore makes it possible, on the one hand, to position the cartridge relative to a plate (2) such as that shown in FIG. 2B, and on the other hand, to ensure its connection with the setting means. in motion (3).
- the cartridge has at least one ear (183) and the displacement means (3) include at least one axis (32) cooperating with said ear to instill in said cartridge a rotary movement.
- the relative mode of movement between the plate and the cartridge may vary according to the embodiments. It could be a displacement at continuous speed or in spurts. The speed of movement may be constant or vary over time.
- the displacement of the cartridge relative to the plate (2) is preferably done by translation, as described in example 3 and illustrated in FIG. 11.
- the system according to the invention also comprises optical means for excitation / measurement of the fluorescence, provided for example above or on the side of said cartridge.
- optical means for excitation / measurement of the fluorescence provided for example above or on the side of said cartridge.
- these means will constitute a single and fixed system.
- An advantage of a preferred variant of the invention according to which the cartridge is circular and molten according to a rotary movement is to be able to successively bring each reaction chamber under said optical system, thus reducing its complexity.
- a tracking system for example located on the cartridge (1), makes it possible to determine at all times which reaction chamber is located opposite the optical system.
- the means for supplying the fluid present in said reservoir to said reaction chambers can be produced in different forms. As described above, we can distinguish two categories of addressing the fluid to the reaction chambers: addressing in an open system, which implies an increase in pressure at the level of the reservoir and the presence of vents
- the means (4) for supplying the fluid into the reaction chambers differ depending on the embodiment chosen.
- the fluid contained in the reservoir is distributed under pressure in the reaction chambers so as to allow uniform filling of these chambers.
- the supply means (4) preferably include a piston device (41) whose speed of penetration into the tank will be calculated to promote proper filling of the reaction chambers.
- these supply means include a pump connected so as to increase the pressure in the tank (11).
- Another preferred variant of the invention involves working in a closed system.
- the fluid contained in the reservoir is then distributed in the reaction chambers as follows: firstly, a vacuum is created inside the cartridge, if necessary by a piston device or a pump (42), connected this time to reduce the pressure in the cartridge
- the invention also relates to any method of amplifying nucleic acid using a system as described above, characterized in that it comprises the steps consisting in: at least partially filling the reservoir (11) with a fluid containing a sample of nucleic acids to be analyzed as well as everything necessary for an amplification reaction, except the primers, and optionally, a fluorescent intercalator of the nucleic acids;
- reagents necessary for the amplification reaction and / or for the detection of the amplification products, and distinct from the primers and probes are pre-distributed in the reaction chambers (13) of the cartridge (1).
- the fluid introduced into the reservoir (11) then does not contain these reagents.
- (13) is carried out either by applying a vacuum to the interior of the cartridge, then restoring the pressure (closed system), or by increasing the pressure at the reservoir (11), provided that the reaction chambers are provided with '' vents (open system).
- Example 1 simplified embodiment of the device of the invention.
- the system for detecting and quantifying target nucleic acid sequences represented in FIG. 1 comprises a circular cartridge made of plastic material 2 mm thick with a diameter of 5 cm.
- This cartridge (1) is provided with a central reservoir (11) and will be described in more detail with reference below to FIGS. 3 and 4.
- the capacity of the reservoir is, in the context of this embodiment, 400 ⁇ l .
- Its floor is flat but it will be noted that in other embodiments it may be curved to facilitate the passage of the fluid towards the chambers without the formation of air bubbles, in particular at the end of addressing when the tank is almost empty.
- the system also comprises a heating plate (2) in direct contact with the underside of the cartridge (1) and means (3) for moving the cartridge (1) relative to the heating plate (2).
- These displacement means include a micromotor (31) connected to two axes (32) which cooperate with two ears (183) of the cartridge (1) to instill in the latter a rotary movement on the heating plate (2), the latter it remains fixed.
- the system described also includes a piston (41) intended to cooperate with said reservoir (11) as well as an optical device (5) for excitation / fluorescence measurement (emitting source allowing excitation at a given and programmable wavelength and receiver of the emitted fluorescence) fixed and placed above the cartridge (1) and the heating plate (2).
- a piston (41) intended to cooperate with said reservoir (11) as well as an optical device (5) for excitation / fluorescence measurement (emitting source allowing excitation at a given and programmable wavelength and receiver of the emitted fluorescence) fixed and placed above the cartridge (1) and the heating plate (2).
- the heating plate (2) consists of three metal blocks (21, 22 and 23) (hereinafter called thermoblocks) in the form of disc portions. It will be noted that in this embodiment, these thermoblocks have substantially the same size but that, in other embodiments, they may have a different size, the size being understood as the angular surface occupied when viewed from above.
- Each thermoblock (21, 22 and 23) is designed to be able to be brought to a constant and programmable temperature, corresponding to one of the phases (denaturation, hybridization or elongation) of the amplification cycles (PCR), ie generally 94 ° respectively. C for denaturation, 72 ° C for elongation, and between 30-40 and 65-70 ° C for hybridization according to the Tm (hybridization temperature) of the primers used.
- thermoblocks can be controlled by any means known to those skilled in the art.
- the cartridge (1) is provided with a central reservoir (11) with a capacity of 400 ⁇ l connected to 36 reaction chambers (13) by as many channels (12), distributed uniformly over the entire periphery of the cartridge (in FIG. 3, we have not shown all of the channels and chambers but only some of them).
- These reaction chambers (13) are moreover provided with vents (14) opening onto the edge of the cartridge (1).
- the channels have a diameter of 0.2 mm and the volume of the reaction chambers is 2.5 microliters. In other embodiments, this diameter and this volume may of course be different.
- this cartridge (1) is also provided with two ears (183) each pierced with an orifice to allow an axis to pass
- the reaction chambers have a depth of 1 mm. Their floor has a thickness of about 0.2 mm. This thickness is sufficiently small to facilitate good heat exchanges between the chambers (13) and the thermoblocks (21, 22 and
- reaction chambers (13) are closed in their upper part by a transparent wall (17), also forming the wall of the reservoir (11).
- the central reservoir (11) is intended to receive the sample of nucleic acids to be analyzed as well as everything necessary for an amplification reaction, and optionally a fluorescent intercalator of the nucleic acids (the assembly is hereinafter referred to as fluid) , with the exception of the primers pre-distributed in each peripheral reaction chamber 10.
- the user places in the central reservoir 90 ⁇ l (that is to say 36 times 2.5 ⁇ l) of fluid, of which 75 ng of nucleic acids.
- the reagent concentrations of said fluid are as follows: dNTP: 200 ⁇ M Taq buffer: 1 x MgCI 2 : 1.5 mM Taq: 4U SybrGreen (registered trademark): 1 x
- Each chamber 10 except a few for negative control purposes, contains two primers specific for a target sequence to be amplified, and optionally one or more labeled probes, allowing a specific subsequent measurement of fluorescence.
- 10 ng of each primer were distributed in each chamber except in those serving as a negative control.
- the piston (41) After having partially filled the reservoir (11) with the fluid whose volume is equal to the sum of the volumes of the chambers (the volume of a chamber is defined as being the product of its "floor" surface and its depth), the piston (41) is actuated to distribute this fluid in the plurality of reaction chambers (13).
- This piston increases the pressure within the reservoir (11) and allows the passage of the fluid in the channels to the chambers.
- the speed of movement of the piston in the reservoir is approximately 1 mm per second and said movement is stopped at a level which depends on the volume of fluid to be addressed in the chambers.
- the small diameter of the channels (12) makes it possible to prevent the diffusion of the fluid from the reservoir (11) to the channels (12) and the chambers (13) under the effect of gravity (on this scale, the processes usually negligible as the capillary forces become significant, and in this case sufficient to maintain the fluid in the reservoir). Thanks to the vents (14), the air present in the chambers (13) is evacuated, which ensures filling thereof.
- thermoblocks (21, 22, 23) are brought to the three temperatures corresponding to the three temperatures of the phases of the PCR (or to slightly higher temperatures taking into account any heat losses between the heating plate (2) and the cartridge 1) and the displacement means (3) are implemented so as to animate with a gyratory movement the cartridge (1) for passing successively and as many times as desired each reaction chamber above the three thermoblocks.
- the block (21) is brought to the temperature corresponding to the denaturation phase (94 ° C)
- the thermoblock (22) is brought to the temperature corresponding to the hybridization phase (36 ° C)
- the thermoblock (23) is brought to the temperature corresponding to the elongation phase (72 ⁇ C).
- the micromotor (31) of the displacement means (3) is designed to instill a rotation of 10 degrees every 2.5 seconds in the cartridge (1) (i.e. a PCR cycle in 1.5 min).
- this movement may have a different speed and be continuous instead of being jerky.
- the optical device (5) is provided above the corresponding block 23 brought to a temperature corresponding to the elongation temperature, and more particularly to a location which corresponds to the end of the elongation phase.
- the optical device (5) can be placed in a different location, chosen in particular according to the chemistry used. For example, using TaqMan TM chemistry or non-specific fluorescence, it makes sense to perform the measurement at the end of the elongation phase, as described above.
- the use of Molecular Beacons TM type chemistry implies that the measurement is made rather at the time of hybridization. The system presented makes it possible to rapidly and reproducibly fill a large quantity of reaction chambers and to carry out a PCR and fluorescence measurements on the content thereof at each cycle of the PCR.
- FIGS. 5 to 10 show an example of a circular cartridge presenting certain modifications compared to the cartridge of example 1.
- This cartridge is intended for use in a closed system, that is to say that the reaction chambers (13) have no other opening than the arrival of the channel (12).
- the cartridge consists of two elements which fit into each other: the lower part, or base, is shown in Figures 5 and 6, and the upper part, or cover, is shown in Figures 7 and 8. The assembly of the two is illustrated in Figures 9 and 10.
- the loading of this cartridge is carried out as follows:
- the fluid is no longer addressed by an increase in pressure but by vacuum, which presents the advantage of not requiring a vent and therefore working in a closed system.
- the bottom of the tank has a conical shape allowing the fluid to be distributed around its periphery, that is to say near the entry of the channels.
- an anti-reflux system consisting of a vertical channel portion (123), which, on the one hand, prevents cross contamination in the event of untimely return of fluid to the central part or in case all the fluid is not engaged in the channel and, on the other hand, once the addressing has been carried out but before the PCR, to plug the channels by means of a stopper including the serrations come to marry these vertical entries, in order to work in a closed system (no contamination, no evaporation).
- the cartridge is made of plastic, preferably polycarbonate because this polymer has interesting physical, optical and thermal behavior characteristics.
- the size of the channels is for example 0.4 x 0.2 mm (half moon) in section.
- the size of the consumable is for example 100 mm (diameter), the number of chambers is 80, the number of sub-tanks is between 1 and 8.
- the cartridge (1) has a central protruding part (181) on the underside having a notch (182), so that the protruding part (181) is embedded in the heating plate (2) and connects the cartridge (1) with the displacement means (3) at a cleat or axis (32) set in motion by a micromotor (31).
- the projecting part (181) therefore makes it possible, on the one hand, to position the cartridge relative to a plate (2) such as that shown in FIG. 2B, and on the other hand, to ensure its connection with the setting means. in motion (3).
- the reaction chambers are loaded with primers specific for target sequences and, where appropriate, with probes of the TaqMan TM type or other specific for said targets.
- the targets will be viral or bacterial genes, junctions between a transgene and the genome of a plant to detect and / or identify certain GMOs, etc.
- SybrGreen (registered trademark): 0.1 x
- the reservoir is no longer central but "on the side", and the movement of the cartridge is no longer necessarily rotary, but can be translational.
- the addressing and closing mode can be completely the same as in the case of the circular mode described in example 2.
- the fluids are addressed by increasing the pressure. They enter the first part of the channel (121), the sum of the volumes of which is intended to be slightly less than the volume of sample to be analyzed (of nucleic acid extract).
- the second part of the channel (122) consists of a glass capillary, of much smaller diameter, included in the plastic system, as illustrated in FIG. 12. Its advantage is to create a phenomenon called pressure drop, allowing a homogeneous filling of the first part of the channels (if one channel fills faster than another when the pressure increases, this phenomenon makes it possible to stop the progression of the fluid in the filled channel (s) until others are in turn).
- vents themselves opening into enclosures (15) with holes on the top, the interest of which is, on the one hand, to recover without pollution any surplus fluid which would come out through said vents and, on the other hand, to be able to close with an adhesive strip in order to prevent evaporation.
- the volume (and shape) of the chambers is equal to that of the first part of the channels.
- the size of the channels is 0.4 mm in diameter, i.e. 1 channel per mm if the space between two channels is 0.6 mm.
- an 8 cm long cartridge has 80 chambers. Two possibilities can be envisaged to close the channel at the level of the reservoir:
- the first possibility consists in using, as in Example 2, a serrated plug.
- the piston which increases the pressure and said plug are then combined.
- an opening of the piston must be provided
- the second possibility is to have the oil (in excess) above the fluids. So once the chambers are filled, the canals
- (121) are at least partially filled with oil, preventing contamination and evaporation.
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Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU7855401A AU7855401A (en) | 2000-07-28 | 2001-07-20 | Device for heat-dependent chain amplification of target nucleic acid sequences |
EA200300203A EA004719B1 (ru) | 2000-07-28 | 2001-07-20 | Устройство для термозависимой цепной амплификации последовательностей - мишеней нуклеиновых кислот |
JP2002515419A JP4979873B2 (ja) | 2000-07-28 | 2001-07-20 | 標的核酸配列の熱依存性連鎖増幅のための装置 |
CA002416756A CA2416756C (fr) | 2000-07-28 | 2001-07-20 | Dispositif pour l'amplification en chaine thermo-dependante de sequences d'acides nucleiques cibles |
EP01956628A EP1305115B1 (fr) | 2000-07-28 | 2001-07-20 | Dispositif pour l'amplification en chaine thermo-dependante de sequences d'acides nucleiques cibles |
AT01956628T ATE532583T1 (de) | 2000-07-28 | 2001-07-20 | Vorrichtung zur pcr-amplifizierung von ziel-dna- sequenzen |
AU2001278554A AU2001278554B2 (en) | 2000-07-28 | 2001-07-20 | Device for heat-dependent chain amplification of target nucleic acid sequences |
BR0112789-6A BR0112789A (pt) | 2000-07-28 | 2001-07-20 | Cartucho de reação, dispositivo para efetuar reações enzimáticas e/ou de biologia molecular e processos de amplificação de ácido nucleico e de enchimento em sistema fechado das cámaras de reação de um cartucho |
US09/981,070 US6821771B2 (en) | 2000-07-28 | 2001-10-15 | Device for thermo-dependent chain reaction amplification of target nucleic acid sequences, measured in real-time |
US10/926,482 US7732136B2 (en) | 2000-07-28 | 2004-08-25 | Device for thermo-dependent chain reaction amplification of target nucleic acid sequences, measured in real-time |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/10029 | 2000-07-28 | ||
FR0010029A FR2812306B1 (fr) | 2000-07-28 | 2000-07-28 | Systeme d'amplification en chaine par polymerse de sequences nucleiques cibles |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US09/981,070 A-371-Of-International US6821771B2 (en) | 2000-07-28 | 2001-10-15 | Device for thermo-dependent chain reaction amplification of target nucleic acid sequences, measured in real-time |
US09/981,070 Continuation US6821771B2 (en) | 2000-07-28 | 2001-10-15 | Device for thermo-dependent chain reaction amplification of target nucleic acid sequences, measured in real-time |
US10/926,482 Division US7732136B2 (en) | 2000-07-28 | 2004-08-25 | Device for thermo-dependent chain reaction amplification of target nucleic acid sequences, measured in real-time |
Publications (1)
Publication Number | Publication Date |
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WO2002009877A1 true WO2002009877A1 (fr) | 2002-02-07 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2001/002385 WO2002009877A1 (fr) | 2000-07-28 | 2001-07-20 | Dispositif pour l'amplification en châine thermo-dependante de sequences d'acides nucleiques cibles |
Country Status (14)
Country | Link |
---|---|
US (2) | US6821771B2 (fr) |
EP (2) | EP2269738B1 (fr) |
JP (2) | JP4979873B2 (fr) |
CN (1) | CN1248781C (fr) |
AT (1) | ATE532583T1 (fr) |
AU (2) | AU2001278554B2 (fr) |
BR (1) | BR0112789A (fr) |
CA (1) | CA2416756C (fr) |
DK (1) | DK2269738T3 (fr) |
EA (1) | EA004719B1 (fr) |
ES (2) | ES2389763T3 (fr) |
FR (1) | FR2812306B1 (fr) |
WO (1) | WO2002009877A1 (fr) |
ZA (1) | ZA200300700B (fr) |
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DE10360220A1 (de) | 2003-12-20 | 2005-07-21 | Steag Microparts Gmbh | Mikrostrukturierte Anordnung zur blasenfreien Befüllung zumindest eines Systems zur Ableitung von Flüssigkeiten, Vorrichtung mit einer solchen Anordnung und Befüllungsverfahren |
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WO2004024944A2 (fr) * | 2002-09-13 | 2004-03-25 | Genesystems | Procede et sequences nucleotidiques pour la detection et l'identification de microorganismes dans un melange complexe ou dans l’eau |
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EP2599856A1 (fr) * | 2010-05-07 | 2013-06-05 | Hitachi High-Technologies Corporation | Amplificateur d'acides nucléiques et dispositif d'inspection d'acides nucléiques l'employant |
EP2599856A4 (fr) * | 2010-05-07 | 2015-01-07 | Hitachi High Tech Corp | Amplificateur d'acides nucléiques et dispositif d'inspection d'acides nucléiques l'employant |
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Also Published As
Publication number | Publication date |
---|---|
EP2269738B1 (fr) | 2012-08-29 |
ATE532583T1 (de) | 2011-11-15 |
EP1305115B1 (fr) | 2011-11-09 |
JP4979873B2 (ja) | 2012-07-18 |
ZA200300700B (en) | 2004-03-10 |
AU2001278554B2 (en) | 2006-09-28 |
ES2389763T3 (es) | 2012-10-31 |
US7732136B2 (en) | 2010-06-08 |
AU7855401A (en) | 2002-02-13 |
ES2372027T3 (es) | 2012-01-13 |
JP2011200245A (ja) | 2011-10-13 |
DK2269738T3 (da) | 2013-01-02 |
CN1248781C (zh) | 2006-04-05 |
FR2812306B1 (fr) | 2005-01-14 |
FR2812306A1 (fr) | 2002-02-01 |
US20050026277A1 (en) | 2005-02-03 |
US20020081669A1 (en) | 2002-06-27 |
EA004719B1 (ru) | 2004-08-26 |
CA2416756A1 (fr) | 2002-02-07 |
EA200300203A1 (ru) | 2003-06-26 |
EP2269738A1 (fr) | 2011-01-05 |
EP1305115A1 (fr) | 2003-05-02 |
JP2004504828A (ja) | 2004-02-19 |
BR0112789A (pt) | 2003-09-09 |
US6821771B2 (en) | 2004-11-23 |
JP5202686B2 (ja) | 2013-06-05 |
CA2416756C (fr) | 2010-01-19 |
CN1458866A (zh) | 2003-11-26 |
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