WO2003062418A1 - Procede et systeme de detection de donnees relatives a un acide nucleique - Google Patents
Procede et systeme de detection de donnees relatives a un acide nucleique Download PDFInfo
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- WO2003062418A1 WO2003062418A1 PCT/JP2003/000668 JP0300668W WO03062418A1 WO 2003062418 A1 WO2003062418 A1 WO 2003062418A1 JP 0300668 W JP0300668 W JP 0300668W WO 03062418 A1 WO03062418 A1 WO 03062418A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6813—Hybridisation assays
- C12Q1/6827—Hybridisation assays for detection of mutation or polymorphism
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6813—Hybridisation assays
- C12Q1/6834—Enzymatic or biochemical coupling of nucleic acids to a solid phase
- C12Q1/6837—Enzymatic or biochemical coupling of nucleic acids to a solid phase using probe arrays or probe chips
Definitions
- the present invention relates to a method and an apparatus for detecting nucleic acid information forcefully.
- a DNA probe complementary to each of a nucleic acid having a normal gene sequence or a nucleic acid having a known mutation in the gene sequence is prepared in advance.
- a certain sample DNA is hybridized separately to each probe, and the amount of these hybrids is detected and compared, and it is determined that the probe with more hybridization has higher complementarity with the sample DNA. Is being done. That is, if the amount of hybridization to the probe complementary to the normal DNA is large, the sample DNA is normal, and if the amount of hybridization to the probe complementary to the mutant DNA is large, the sample DNA suddenly It can be assumed that the mutation has occurred.
- a detectable label is applied to the sample DNA and the amount of DNA is indirectly detected by detecting the label.
- fluorescence, RI (radioactive isotope), chemiluminescence and the like are used for such a label.
- DNA microarrays which collectively detect information on multiple genes, has begun to spread.
- DNA microarrays makes it possible to analyze information about multiple genes at the same time, and is often used for mRNA expression analysis.
- Base mutation polymorphism Base mutation polymorphism
- Japanese Patent Application Laid-Open No. 2001-50931 proposes a method for detecting a single base mutation at high speed and with high sensitivity by using an electrochemical reaction in a DNA microarray.
- the reaction is accelerated by applying electrodes to each element and applying a voltage.
- a method for performing hybridization at high speed and with high accuracy a method described in Japanese Patent Application Laid-Open No. 2000-51525 is cited. In this method, a metal oxide having a porous structure is used as a reaction carrier, and the solution is driven from one surface to the other surface, thereby increasing the diffusion speed of the sample solution and speeding up the reaction. is there.
- a probe corresponding to a base mutation is prepared, and the mutation is identified using its specificity.However, in order to reliably detect a single base mutation difference, a probe containing a mismatched nucleotide is used. I use. This is due to the difference in Tm between the hybrid between the hybrid with the perfect match and the probe with a single base mutation and the difference between the hybrid with the probe with a single base mutation and the hybrid with the probe with a single base mutation. This is to take advantage of the fact that is larger.
- the absolute hybridization intensity is reduced, there are problems in that much time is required for the reaction, and in terms of sensitivity.
- the present inventors have conducted intensive studies in view of the above-described various problems with the conventional technology. As a result of performing signal data acquisition in a powerful manner, more and more accurate We found that it would be possible to obtain more reliable information.
- the target nucleic acid is brought into contact with a probe having a sequence complementary to at least a part of the target nucleic acid sequence.
- the signal data acquisition is performed while changing reaction measurement conditions or detection conditions. More specifically, the reaction temperature, or the composition of the reaction solution, It is preferable that the change is performed while changing at least one of the capacity and the type, and it is particularly preferable that the change is a change in the reaction temperature.
- the method for detecting nucleic acid information of the present invention also includes a perfect match probe that is completely complementary to at least a part of the sequence of the target nucleic acid, and one or more types of imperfections in which at least a part of the perfect match probe is mutated.
- the match probe is brought into contact with the target nucleic acid, a hybrid is formed between the target nucleic acid and the complete match probe or the incomplete match probe, and the hybrid of the target nucleic acid is determined based on a difference in binding strength of the hybrid.
- the method for detecting nucleic acid information is characterized in that the method includes force-inductively acquiring data of the signal while continuously or stepwise changing conditions for measuring or detecting a signal generated by the hybrid. I do.
- the acquisition of the signal data is a change in at least one of a reaction temperature, or a composition, a volume, or a type of a reaction solution. It is a change of Is preferred.
- the reaction temperature in the nucleic acid information detection method described above may be changed one or more times from a temperature lower than the Tm value of the hybrid to be detected to a temperature increase between temperatures exceeding the Tm value, or such a temperature increase and a temperature decrease. It is preferred that the temperature cycle be the same.
- the maximum value of the signal intensity and / or the amount of change in the signal intensity may be measured during that time.
- the temperature at which the signal emitted by the hybrid is measured is continuously or stepwise increased, and the intensity of the signal emitted from the hybrid between the respective temperatures is increased.
- the temperature can be maintained when the amount of change turns negative.
- the method for detecting nucleic acid information of the present invention further comprises, in any of the above-described embodiments, using a plurality of types of probes in the same system to which the same reaction conditions can be applied, and obtaining information on a plurality of types of nucleic acids. It is characterized by simultaneous detection, and more specifically, a DNA microarray can be used.
- the method for detecting mutation of a nucleic acid sequence of the present invention is characterized in that the probe is a plurality of types of probes having a plurality of types of sequences, and the probes have sequences overlapping each other.
- the method for detecting a mutation in a nucleic acid sequence of the present invention also includes the method for detecting a mutation in a nucleic acid sequence described above, wherein the plurality of types of probes are completely complementary to at least a part of the sequence of the target nucleic acid.
- the determination can be made by comparing the results of the analysis with the probe group having a lower Tm value and the results of the analysis with the probe group having a higher Tm value among the overlapping probes.
- Probes of SEQ ID NOs: 56 to 69 characterized in that the probe having the above sequence has a 20-mer nucleotide sequence for analyzing K_i'as codonl2 can be used.
- probes having SEQ ID NOs: 70 to 83 characterized in that the probe having the above sequence has an r7mer base sequence for analyzing K-ras codonl2, can be used.
- the above-mentioned probe has a 17-mer nucleotide sequence for the purpose of analyzing K_ms codonl2.
- Probes having SEQ ID NOs: 70 to 83, which have a 20-mer nucleotide sequence for the purpose of analyzing lobe and Ks codonl2, can be used.
- the hybrid formation may be performed by bringing a liquid sample containing a target nucleic acid into contact with a probe fixed to a porous body. It is characterized by.
- the method for detecting nucleic acid information preferably includes a step of reciprocating the liquid sample once or a plurality of times in the porous body.
- the detection of a signal can be performed based on the detection of a fluorescent label.
- the target nucleic acid may be any of an oncogene, an intracellular drug resistance gene, a cell cycle control gene, or an apoptosis-related gene, or a combination thereof.
- the nucleic acid information detection device of the present invention includes a sample storage container for containing a sample containing a target nucleic acid, a nucleic acid-reactive carrier including a porous structure capable of immobilizing nucleic acid and connected to the container, Driving means for controlling and flowing without leakage between the nucleic acid reaction carrier, temperature control means for controlling the reaction temperature on the reaction carrier, and a target formed in the porous structure It is characterized by including means for detecting a signal emitted from a hybrid between the nucleic acid and the probe.
- nucleic acid information detection device of the present invention there are provided one or more solution storage containers connected to the nucleic acid reaction carrier and for storing a solution of a different type from the sample containing the target nucleic acid, and the solution storage device as appropriate.
- a means for mixing various solutions contained in the container and sending the mixed solution to the nucleic acid reaction carrier may be further included.
- the target nucleic acid can be any of an oncogene, an intracellular drug resistance gene, a cell cycle control gene, or an apoptosis-related gene, or a combination thereof.
- FIG. 1 This is a diagram schematically showing the nucleic acid information analyzer of the present invention.
- Figure 2 This figure shows the results of force-intensity measurement of the hybridization between a target nucleic acid and a perfect match probe or an incomplete match probe while changing the hybridization temperature.
- the signal measurement temperature was set at 25 ° C
- the region (B) at 40 ° C
- the region (C) at 60 ° C.
- the sample solution was reciprocated five times to the nucleic acid reaction carrier.
- FIG. 3 This figure shows the result of detecting the p53 gene derived from a cell line by the method of the present invention.
- FIG. 4 This figure is a probe arrangement diagram of the DNA microarray used in Example 3.
- FIG. 5 This figure shows the results of the experiment of Example 3 for detecting a mutation in the K-RAS gene.
- the lower panel shows the results of measuring the fluorescence at 1 minute, 10 minutes, 20 minutes, 30 minutes, and 40 minutes after the start of hybridization.
- FIG. 6 This figure is a probe arrangement diagram of the DNA microarray used in Example 4.
- FIG. 7 is a view showing experimental results of Example 4 in which the p53 gene and the K-RAS gene are simultaneously detected.
- the lower panel shows the results of measuring the fluorescence at 1 minute, 10 minutes, 20 minutes, 30 minutes, and 40 minutes after the start of hybridization.
- Fig. 8 shows the difference in signal from the hybrid at temperature ⁇ ( ⁇ ') in the system using probes A-D.
- the fluorescence intensity in this figure, the fluorescence intensity for nucleic acids B, C, and D is the strongest, followed by nucleic acid A and probe A complete match, and nucleic acid A and probe A — The fluorescence intensity decreases in the order of base mismatch.
- Figure 9 shows the difference in signal from the hybrid at the temperature ⁇ ( ⁇ ') in the system using probes A-D.
- the method of expressing the difference in fluorescence intensity is in accordance with the expression method in FIG. 8, and a spot without hatching indicates the weakest fluorescence intensity.
- Figure 10 shows the difference in signal from eight hybrids at a temperature T (C) in a system using probe A-D.
- the method of expressing the difference in the fluorescence intensity is in accordance with the expression method in FIG. 8, and the spot without any hatching indicates the weakest fluorescence intensity.
- Fig. 12 shows the profile of temperature change during force-inductive acquisition of data.
- FIG. 13 is a spot arrangement diagram of probes in the DNA microarray used in Example 6.
- Fig. 14 When hybridized at room temperature (25 ° C) in Example 6 5 compares the signal intensity of each spot.
- Fig. 15 Comparison of the signal intensity of each spot when hybridizing at 55 ° C in Example 6.
- FIG. 16 A comparison of the signal intensity of each spot when hybridizing at ⁇ 2 ° C. in Example 6. BEST MODE FOR CARRYING OUT THE INVENTION
- Nucleic acid refers to DNA or RNA, including DNA, RNA, and artificial nucleotides.
- RN A means any of them.
- the “probe” means a nucleic acid fragment for testing a nucleic acid in a sample using a hybridization reaction based on complementation of nucleic acids.
- Probe types of probes means, when the target gene is a single gene, a probe obtained by substituting, inserting, or deleting a part of the base sequence of the probe with another base sequence; and It means a plurality of probes using different base parts as gene capture sites. When there are a plurality of target genes, it means a plurality of complementary nucleic acid sequence probes for each gene.
- Hybrid refers to a homologous or heterologous duplex formed between any of the above nucleic acids, and includes DNA-DNA, DNA-RNA, RNA-RNA and the like. '
- nucleic acid information refers to the nucleic acid sequence itself, the presence or absence of a mutation in the nucleic acid sequence, physical properties (eg, Tm) that changes depending on the nucleic acid sequence, and the amount of the nucleic acid (eg, mRNA copy number).
- the “signal” is a signal that can be appropriately detected and measured by an appropriate means, and includes fluorescence, radioactivity, chemiluminescence, and the like.
- “Perform force-inductively” means that the data is acquired not only at a fixed point in time, but also at successive or intermittent points in time.
- the method for detecting nucleic acid information of the present invention comprises: contacting a target nucleic acid with a probe having a sequence complementary to at least a part of the target nucleic acid sequence; In a method for detecting information of the target nucleic acid by measuring a signal emitted in an amount dependent on the amount of the hybrid, a data acquisition of the signal In the operation.
- the target nucleic acid can be of various types, such as DNA from the genome, mRNA extracted from cells, DNA amplified by PC, and plasmid DNA, and can be used for hybridization with a probe. This is not particularly limited as long as it does not contain any adverse substances. However, in order to perform a highly accurate experiment, it is preferable to use a sample whose purity has been further increased by various purification techniques known in the art. Further, in the target nucleic acid, it is preferable that at least a part of the sequence of a portion to be hybridized is known in order to synthesize a probe. The introduction of the label into the target nucleic acid can be performed by reverse transcription of PCR of mRNA.
- Contact between the target nucleic acid and the probe is performed by contacting the probe with the target immobilized on a carrier capable of immobilizing the nucleic acid without disturbing duplex formation with other nucleic acids. It can be performed by contacting a solution containing a nucleic acid or the like.
- the formation of eight hybrids between the target nucleic acid and the probe can be performed under conditions determined based on the difference in binding strength depending on the sequence information of the hybridizing portion. If it is a change, it can be done at a temperature determined based on the difference in Tm. At a temperature lower than Tm, but near Tm, specific duplex formation between the target nucleic acid and probe is likely to occur, and non-specific duplex formation is unlikely to occur. It takes time to form. On the other hand, at a temperature lower than the temperature at which specific duplex formation is likely to occur, the reaction time for duplex formation is reduced, but non-specificity between the target nucleic acid and the probe is reduced. The amount of binding increases. Therefore, the setting of the temperature of the reaction is determined by the required experimental accuracy and the required reaction time. In addition, other reaction conditions are similarly determined in consideration of this.
- the measurement of the signal emitted in an amount dependent on the amount of the hybrid is usually performed using a label that has been previously introduced into the sample nucleic acid, but includes, for example, a fluorescently labeled sample nucleic acid and a radioisotope.
- a label that has been previously introduced into the sample nucleic acid, but includes, for example, a fluorescently labeled sample nucleic acid and a radioisotope.
- a sample nucleic acid synthesized from NTP can be used.
- various nucleic acid labeling techniques regardless of existing ones and newly developed ones
- it is also possible to detect the hybrid by adding a reagent that binds to the hybrid double heavy chain after the formation of the hybrid and detecting it.
- Examples of the case where hybrids are detected by fluorescence include the method of using a primer that has a fluorescent label introduced in advance when synthesizing the sample nucleic acid by PCR, and the method of chemical reaction with the sample nucleic acid. And a method of introducing a fluorescent label using an enzyme. Regarding the introduction of fluorescent labels, commonly used labels A method is available. '
- the time required for acquiring force-intensity data varies depending on the reaction conditions of the hybridization reaction, but generally ranges from several minutes to several hours after the start of the hybridization reaction. However, depending on the reaction conditions, it is possible to acquire data only for the total time outside this range.
- data acquisition is performed force-inductively. . Therefore, in the present invention, it is possible to track the temporal change of the hybridization between the target nucleic acid and the probe, and by tracking the temporal change, more and more accurate information on the target nucleic acid can be obtained. Thus, information with less variation can be obtained. That is, when performing kinetic data acquisition, the progress of the reaction state can be monitored, and the progress of the reaction can be strictly detected. Then, more accurate nucleic acid information can be obtained from the entire course of the reaction.
- the data acquisition of the signal is performed while changing the measurement condition or the detection condition of the reaction, more specifically, at least one of the reaction temperature, or the composition, volume, or type of the reaction solution. It is also possible to carry out one, more preferably, changing the reaction temperature. For example, when signal data acquisition is performed in conjunction with a change in reaction temperature, information such as the amount of change in the hybridization reaction, the start of the reaction, and the response of the reaction system to changes in the reaction conditions, etc., can also be acquired. Enabled and more profitable.
- change of the reaction temperature means to change the temperature in the system in which the hybridization reaction between the target nucleic acid and the probe is performed
- change of the composition of the reaction solution includes Changes in the composition and pH of the salts and additives to be added
- changes in the volume of the reaction solution means changes in the volume due to removal and insertion of the reaction solution from the reaction system.
- Change of type means to change the type of aqueous solution or alcohol solution.
- Hybridization between a target nucleic acid and a probe is performed under optimal conditions for estimation based on sequence information, and it is therefore generally not known whether these conditions are truly optimal. For this reason, conventional nucleic acid information detection methods that perform static measurements do not have sufficient data reliability or data variability if data acquisition is performed under non-optimal conditions. There existed problems such as the presence or absence.
- Examples of the above-mentioned embodiments of the present invention include comparison of the transcription amount and copy number of a specific gene in a sample, detection of a specific sequence (normal or mutant) in a nucleic acid sequence, and SNP. Gene polymorphism detection, virus and bacterial typing, and the like.
- the method for detecting nucleic acid information of the present invention comprises: a perfect match probe completely complementary to at least a part of the sequence of a target nucleic acid; and one or more types in which at least a part of the perfect match probe is mutated.
- a perfect match probe completely complementary to at least a part of the sequence of a target nucleic acid
- one or more types in which at least a part of the perfect match probe is mutated mutated.
- the progress of the hybridization reaction can be performed very precisely. For example, if signal acquisition is performed in a dynamic manner while changing the reaction temperature continuously or stepwise, it becomes possible to detect mutations in a nucleic acid sequence that differs only by one base.
- a target nucleic acid such as a PCR product is prepared, and a probe completely complementary to at least a part of its natural sequence and the same one base of the known sequence are mutated.
- hybridization with the target nucleic acid Measure while changing the reaction temperature. At a temperature near the Tm for a hybrid with a probe that perfectly matches the target nucleic acid, the hybrid between the target nucleic acid and the probe that does not perfectly match it is more unstable, and the It is considered that the equilibrium is inclined toward the side where the probe has dissociated.
- the hybrid between the target nucleic acid and the perfectly matched probe should give the strongest signal, while the target nucleic acid and the Hybrids between probes that do not perfectly match, if any, are of very low abundance and, therefore, have low signal intensity. Based on such differences in signal intensity or the presence or absence of a signal, it is possible to identify whether the base considered to be mutated in the target nucleic acid is A, T, G, or C based on the signal intensity It is possible to do. In the conventional method, since the reaction temperature for performing hybridization is a fixed point, if the reaction temperature is not optimal for the formation of the hybrid, hybridization with an incomplete match probe may give a stronger signal. it was thought.
- mutations of not only one base but also a plurality of bases can be detected simultaneously by appropriately preparing and using a probe containing mutations at a plurality of bases.
- the reaction conditions other than the reaction temperature for example, the composition, volume
- a similar effect can be obtained by changing the type. More specifically, it is also possible to change the type and concentration of the salt in the reaction solution for the hybridization reaction, and to change the conditions of the high pre-sidication reaction through the formation of a ⁇ ⁇ gradient using different buffers. It is possible.
- Such a change in the composition of the reaction solution and the like affects the hybridization as well as a change in the reaction temperature.
- the change in the reaction temperature is preferably an increase in temperature.
- the temperature it is preferable to increase the temperature from a temperature lower than the Tm value to a temperature exceeding the Tm value.
- a profile of the hybridization reaction can be obtained. This makes it possible to acquire more reliable data.
- the Tm value of the hybrid can be qualitatively or quantitatively determined by measuring the maximum value of the signal intensity during the increase. If the temperature is increased stepwise, an approximate Tm value can be determined, and if the temperature increase is made more finely in steps (for example, at intervals of 1 ° C or less) or continuously, a more accurate Tm value will be determined. It is also possible to determine This difference in Tm value reflects the presence or absence of a mutation in the sequence of each nucleic acid, and therefore, according to this embodiment of the present invention, the mutation can be detected more strictly.
- the measurement accuracy can be further increased by measuring the amount of change in the signal.
- the method for detecting nucleic acid information of the present invention comprises continuously or stepwise increasing a temperature at which a signal emitted by a hybrid is measured, and measuring a change in the intensity of a signal emitted from the hybrid. Maintaining the temperature when the amount of change turns negative.
- the reaction temperature is maintained when the change in the signal intensity turns negative, the Tm of the temperature higher than that temperature is maintained.
- Signals from hybrid species with higher values maintain or increase their intensity, whereas signals from hybrid species with Tm values below the maintained temperature gradually decrease. it is conceivable that. Therefore, by utilizing the difference in Tm value, it is possible to more accurately distinguish between hybrid species that are perfectly matched and hybrid species that are not perfectly matched, based on the sequence of the perfectly matched probe. And unknown Mutations can be identified.
- the method for detecting nucleic acid information of the present invention uses a plurality of types of probes and simultaneously detects information on a plurality of types of nucleic acids in the same system to which the same reaction conditions can be applied. It is characterized by doing. More specifically, a DNA microarray is used.
- hybridization between the target nucleic acid and the probe can be performed near conditions that depend on the sequence of the hybridizing portion in the target nucleic acid.
- a change in the condition for measuring a signal is caused by a change in temperature.
- force kinetic can be performed in a temperature range determined based on the Tm of the sequence of the hybrid-forming portion of the target nucleic acid. That is, from a temperature lower than the Tm value of the probe having the lowest Tm value of the plural types of probes to a temperature higher than the Tm value of the probe having the highest Tm value among the plural types of probes.
- the signal can be measured force-inductively within the temperature range.
- Figure 8 shows the state of the hybrid at the temperature ⁇ ( ⁇ ') near Tm (A), which is the lowest temperature in Figures 8 to 11, and shows the target nucleic acid ⁇ and its perfect match.
- the signal intensity of the hybrid of the probe is higher than the signal intensity of the hybrid of the target nucleic acid A and its monobasic mismatch probe, but is derived from the hybrid containing the target nucleic acids B, C, and D having a higher Tm value. It is weaker than the signal strength.
- FIG. 9 shows a state in which the temperature is further increased from ⁇ ( ⁇ ′) to ⁇ ( ⁇ ′) near Tm (B).
- the signal intensity of the hybrid between the target nucleic acid ⁇ and its perfect match probe is stronger than the signal intensity of the hybrid of the target nucleic acid ⁇ and its single-base mismatch probe, but has a higher Tm value.
- the signal intensity is lower than the signal intensity derived from a hybrid containing target nucleic acids C and D.
- a hybrid signal between the target nucleic acid A and its perfect match probe is detected, but the target nucleic acid A and its single-base mismatch are detected.
- the signal of the hybrid with the Tuchi probe was hardly detected.
- FIG. 10 shows a state in which the temperature is further increased from ⁇ ( ⁇ ′) to T (C) near Tm (C).
- the signal intensity of the hybrid of the target nucleic acid C and its perfect match probe is stronger than the signal intensity of the hybrid of the target nucleic acid C and its single base mismatch probe.
- the hybrid signals of the target nucleic acids A and B and the respective perfect match probes are detected respectively, but in particular, the target nucleic acid A is weakened as compared with FIG. Almost no signal was detected for hybrids between nucleic acids A and B and each single-nucleotide mismatch probe.
- FIG. 11 shows a state in which the temperature is further increased from T (C) to T (D ′) near Tm (D).
- the signal intensity of the hybrid between the target nucleic acid D and its perfect match probe is stronger than the signal intensity of the hybrid of the target nucleic acid D and its single base mismatch probe.
- the hybrid signals of the target nucleic acids B and C and the respective perfect match probes were detected, particularly for the target nucleic acid B, the signal was weakened as compared with FIG. Hybrids containing nucleic acid A, and hybrids of target nucleic acids B and C with each single-base mismatch probe were hardly detected.
- Obtaining the signal overnight is not a fixed point with respect to time, but is performed force-inductively, as shown in Fig. 12 for an example. More specifically, the time required for obtaining the force overnight is different depending on the reaction conditions of the hybridization reaction.Power is generally several minutes to several hours after the start of the hybridization reaction. Luck. However, depending on the reaction conditions, it is possible to acquire data overnight only for the total time outside this range. In the example shown in FIG. 12, the temperature is raised stepwise and intermittently, but it is also possible to raise the temperature continuously or to lower the temperature.
- Hybridization between a target nucleic acid and a probe is usually performed under optimal conditions for estimation based on sequence information. Therefore, it is usually not known whether the conditions are really optimal. For this reason, conventional nucleic acid information detection methods that perform static (non-force-induced) or fixed-point measurements require data reliability under conditions that are not optimal. However, there were problems such as not being sufficient, and data variations.
- data acquisition is performed force-inductively, and a plurality of probes are used. For this reason, multiple sequences having different Tm values can be detected accurately and at high speed in the same system.
- the probe is a plurality of types of probes having a plurality of types of sequences, and the probes have a sequence overlapping each other. .
- the same sequence in the target nucleic acid is detected with a plurality of types of probes. All of these multiple types of probes share the recognition sequence in the target nucleic acid, that is, the recognition sequence is overlapped and hybridizes with at least one base different from the other probes. Has become.
- a probe may not be able to hybridize with the target nucleic acid due to its higher-order structure, and the target nucleic acid is detected using only such a probe. For example, false positive and false negative problems may occur.
- multiple types of probes it is expected that the probability that at least one of the types of probes normally hybridizes to the target nucleic acid is higher, thereby improving the reliability of the detection result. Become.
- the difference in Tm value between the shorter length probe and the longer length probe is set to 5 to 10 ° C.
- These probes are used in the same system and force-inductively measured. This is because when the difference in Tm value between the probes is 5 to 1 Ot, even at a temperature near the Tm value of a longer probe, a signal from the spot of a perfect match of a short probe can be expected.
- the DNA microarray that can be used in the method for detecting nucleic acid information of the present invention is not particularly limited, and ordinary microarrays can be used. it can.
- An example of a usable microarray is a microarray in which a plurality of microarrays are provided on a slide chip, and a plurality of probe spots are present in each microarray.
- the probe spot is the minimum unit for fixing the probe.
- the size of the slide tip is usually in the range of 0.5-20.0 cm X 0.5-20.0 cm X 0.01-1.0 cm.
- the size of the microarray is usually in the range of 3.0 mm2 to 16 cm2.
- the probe spot can be substantially circular, substantially rectangular, or polygonal, and its diameter or length of one side is usually on the order of several hundreds / xm.
- the number of probe spots in one microarray is usually in the range of 100-10000. Depending on the experimental conditions, it is of course possible to use a DNA microarray of a standard other than the range defined here.
- the same conditions can be imposed on all probe spots, and when a plurality of probes are used, information on a plurality of nucleic acids can be detected at once.
- the conventional static measurement that does not perform the measurement over time due to the acquisition of the kinetic shidanal de night, which is one of the features of the present invention. It is possible to solve the problem that the reaction time for forming the hybrid is long, which was a problem in the case of (1). That is, as described above, by starting hybridization at a temperature lower than its Tm and sequentially increasing the reaction temperature, the hybridization reaction can be shortened.
- hybridization between a target nucleic acid and a probe is carried out by bringing a liquid sample containing the target nucleic acid into contact with a probe immobilized on a porous body. It is characterized by being performed.
- the immobilization of the probe is performed on a carrier having a porous structure, so that the surface area for immobilizing the nucleic acid is dramatically increased.
- the speed and sensitivity of detecting information is increased.
- the porous material used herein means any porous material suitable for immobilizing nucleic acids, and is not particularly limited. Examples thereof include an aluminum oxide film formed by anodic oxidation, for example, Whatman. The company name Anodisc can be mentioned.
- the step of reciprocating the liquid sample containing the target nucleic acid once or a plurality of times in the porous body under each of the changed signal measurement conditions is performed. It is preferred to include.
- the frequency of contact between the probe immobilized in the porous material and the target nucleic acid increases, which further increases the reaction. It will contribute to the progress and further increase in sensitivity.
- the sample is reciprocated one or more times in the porous body.
- the temperature of the reaction system can be controlled more accurately, and the detection accuracy can be increased and more detailed data can be acquired. This has the advantage that
- the detection of a hybrid can be performed based on a fluorescent label.
- fluorescent label examples include FITC, rhodamine, Cy3, Cy5, Texas Red, and the like, but other than these can be used.
- Target nucleic acids that can be detected by the nucleic acid information detection method of the present invention are not particularly limited, but non-limiting examples include oncogenes, intracellular drug resistance genes, cell cycle control genes, and apoptosis-related genes. And the like.
- the present invention provides a nucleic acid information analyzer which can be used particularly in the above-described method for detecting nucleic acid information, which comprises a sample storage container for containing a sample containing a target nucleic acid, and a porous material capable of immobilizing a nucleic acid.
- a nucleic acid reaction carrier including a structure and connected to the container, a driving means for flowing the sample between the container and the nucleic acid reaction carrier in a controlled and leak-free manner, and a reaction temperature on the reaction carrier And a means for detecting a signal emitted from a hybrid between the probe and a target nucleic acid formed in the porous structure.
- the outline of one embodiment of this apparatus is as shown in FIG.
- the device shown in FIG. 1 is a detection device based on a fluorescence microscope, and the operation of each component is controlled by a PC.
- the sample storage container (not shown in FIG. 1) is not particularly limited as long as it is suitable for storing the sample nucleic acid.
- the nucleic acid reaction carrier containing a porous structure capable of immobilizing nucleic acids is not particularly limited as long as it is suitable for immobilizing nucleic acids and does not inhibit the formation of hybrids.
- the above-mentioned DNA microarray can be mentioned.
- a DNA microarray in which a desired nucleic acid probe is immobilized on a carrier having a porous structure is preferable.
- the structure between the sample storage container and the nucleic acid-reactive carrier the structure must be sealed in order to allow the sample nucleic acid to flow back and forth once or multiple times into the porous structure without leakage. It is preferable to have a capacity sufficient to hold the entire amount of the sample nucleic acid.
- a solution drive for flowing the sample solution between the sample storage container and the nucleic acid reaction carrier As means, pumps suitable for transporting one unit of solution can be used.
- the temperature control means for controlling the reaction temperature on the nucleic acid reaction carrier a means capable of setting the temperature in units of about 0.1 ° C is preferable. This means not only the nucleic acid reaction carrier but also a sample storage container and a sample storage container.
- the environmental temperature of the flow path between the carrier and the nucleic acid reaction carrier can be set to the same temperature.
- a CCD camera image detection unit
- It can be a microscope equipped with the like. It is desirable that all of the microscope, the image detection unit, the solution driving unit, and the temperature control unit are appropriately controlled by a PC.
- the obtained image is converted into signal information for each probe by the processing of the PC, and its absolute value, relative value, and amount of change are calculated by processing with parameters such as the reaction temperature, the number of drives, and the time. It is designed to display the final gene mutation information.
- the device is connected to the nucleic acid reaction carrier and stores at least one solution for storing a different type of solution from the sample containing the target nucleic acid. It is preferable to further include a container, and a means for appropriately sending various solutions contained in the solution storage container to the nucleic acid reaction carrier.
- reaction conditions other than the reaction temperature for example, the reaction solution
- the hybridization reaction can proceed while changing the composition and pH.
- nucleic acid information analyzer of the present invention examples include oncogenes, intracellular drug resistance genes, cell cycle control genes, or Apoptosis-related genes.
- oligo DNAs represented by SEQ ID NOS: 1 to 4 were synthesized and immobilized on an aluminum oxide substrate prepared by anodization.
- a hybridization reaction was performed using the oligo DNA shown in SEQ ID NO: 5 as a sample.
- This oligo DNA was labeled on its 3 ′ side with FITC.
- the sequence of the oligo DNA of SEQ ID NO: 5 is complementary to the probe of SEQ ID NO: 1.
- the probes of SEQ ID NOS: 2 to 4 are obtained by mutating the base at the center of the complementary strand of the oligo DNA of SEQ ID NO: 5 by one base.
- This oligo DNA sample was diluted with 1 XSSPE buffer, and the concentration of ⁇ was used to perform an eight-hybridization reaction with each probe on the substrate.
- the temperature of the nucleic acid reaction carrier was controlled in conjunction with the flow of the solution to the substrate serving as the nucleic acid reaction carrier. The specific conditions are as follows.
- Each cycle was performed for one minute for reciprocating the solution between the sample storage container and the nucleic acid reaction carrier.
- Results Figure 2 shows the results.
- the figure shows detection signals for the probes of SEQ ID NOs: 1 and 2.
- the region (A) in FIG. 2 shows the result of hybridization at 25 ° C.
- the signal intensity increases as the number of flow cycles of the solution increases.
- the non-specific reaction since a non-specific reaction between the target nucleic acid and the probe also occurs, it has an effect of promoting hybridization.
- the signal difference between the perfect match probe (probe SEQ ID NO: 1) and the incomplete match probe (SEQ ID NO: 2) is small.
- the region (B) shows the results when the reaction temperature was 40 ° C.
- FIG. 3 shows the results of signal information derived from hybrids formed by SEQ ID NOS: 10 and 11. This is the relative intensity when the signal intensity derived from the hybrid formed by the probes of SEQ ID NOS: 10 and 11 is 100, and the signal intensity derived from the hybrid formed by the probe of SEQ ID NO: 10 is 100. It is shown as a ratio.
- the method for determining the presence or absence of a mutation near Codonl2 of the K-Ras oncogene performed based on the present invention is shown.
- seven types of K-Ras oncogene probes SEQ ID NOS: 15-21
- the Tm between the microarray and the sample a fluorescently labeled K-Ras gene (amplified by PCR using primers of SEQ ID NOs: 12 and 13) was measured.
- the experimental steps used at this time are described.
- the experimental steps consist of four steps: 1) preparation of fluorescently labeled samples, 2) preparation of microarray, 3) hybridization of sample to microarray, and 4) data analysis.
- Preparation of fluorescently labeled sample Amplify target gene set and perform fluorescent labeling.
- the sample used at this time is not particularly limited as long as it is a part of the human body, but is mainly a tissue section collected from a cancerous tissue, a cell piece obtained by a microdissection method, or a cultured cell. Is used.
- a human K-Ras gene template set (Cat # 7242) marketed by Takara Shuzo was used.
- K-Ras gene for 7 templates Amplify the gene using a PCR kit (Cat # 7112) that can amplify Codonl2.
- an antisense primer having a fluorescent label of FITC inserted at the 5 ′ end was used.
- agarose electrophoresis prepared with 3% NuSieve (FMC) was performed to confirm the amplified product.
- FMC NuSieve
- the obtained amplified sample was again processed by Asymetrix PCR.
- the Asymetrix PCR method uses a composition and temperature cycle in which the sense strand primer is removed from the initial PCR method. 3M ammonium acetate (Wako) was added to the PCR product to 10% (VV), and ethanol (Wako) was further added to a 70% concentration.
- the PCR product was allowed to stand at -20 ° C overnight and centrifuged at 12.000 rpm ⁇ 2 min to precipitate the PCR product. The precipitate was washed twice with 70% ethanol, and then dried with SpeedVac (Savant).
- spots A2-A4 the probe corresponding to the K-RAS-Va1 mutant of SEQ ID NO: 15, and in spots B2-B4, the probe corresponds to the K-RAS-AsP mutant of SEQ ID NO: 16.
- spots C2-C4 the probe corresponding to the K-RAS-A1a mutant of SEQ ID NO: 17 was found, and in spot D2-D4, the probe corresponding to the K-RAS-S The probe corresponding to the er mutant was spot E2-E4, and the probe corresponding to the K-RAS-Cyc mutant of SEQ ID NO: 19 was found in spot F2-F4.
- a probe corresponding to the K-RAS-Arg mutant of SEQ ID NO: 21 and a probe corresponding to the K-RAS-N natural sequence of SEQ ID NO: 21 are arranged in spot G2-G4.
- FIG. 5 shows the time change of the fluorescent spot of the microarray obtained when the temperature was changed during the hybridization.
- FIG. 5 is a fluorescence image from the bottom for 1 minute, 10 minutes, 20 minutes, 30 minutes, and 40 minutes after the reaction, which was programmed to drive the solution and to give a change in the temperature of the solution.
- the temperature of the reaction chamber which was initially at room temperature, is set to 72 ° C.
- the fluorescence intensity of most spots increased immediately after the reaction, and as the temperature was further increased, the Cys spot (codonl2) spotted at the portions corresponding to E2, E3, and E4 in the figure TGT) shows the highest level of fluorescence (after 20-30 minutes).
- the probes with seven different base sequences immobilized not a probe whose sequence is perfectly matched to the sample, but rather a probe with a low calculated Tm It can be seen that the sample is more strongly bound.
- Example 4 The following describes an experimental step for simultaneously testing the P53 cancer suppressor gene and the K-Ras oncogene performed based on the present invention.
- the experimental steps consist of four steps: 1) preparation of fluorescently labeled samples, 2) preparation of microarray, 3) hybridization to DNA chip, and 4) data analysis.
- the sample used at this time is not particularly limited as long as it is a part of the human body, but is mainly a tissue section collected from a cancerous tissue, a cell piece obtained by a microdissection method, or a cultured cell. Is used. As an example, squamous epithelial cells collected from the mouth of a normal person were used. After gargle several times with a saline solution containing 1 M NaCl, the gargle was again gargleed with PBS and used as a suspension of cell debris.
- the cell suspension is precipitated by centrifugation at 2000 rpm x 10 min and suspended in a cell lysis solution consisting of 0.2 / ig / mL Protease K (Wako) and PBS adjusted to 0.1% SDS (sodium dodecyl sulfate). I do. After incubating the cell lysate containing the sample at 37 ° C for 30 minutes, heat-treat at 95 ° C for 30 minutes to inactivate Protease K activity. Transfer the reacted sample to a 1.5 mL eppendorf tube and centrifuge at 12.000 x 2 min to precipitate undissolved cell debris. The centrifuged supernatant was used as a nucleic acid extract.
- a cell lysis solution consisting of 0.2 / ig / mL Protease K (Wako) and PBS adjusted to 0.1% SDS (sodium dodecyl sulfate). I do. After incubating the cell lysate containing the
- the obtained nucleic acid extract was suspended in one PCR master mix, and a PCR reaction of 50 cycles was performed.
- a master mix is prepared using Takara Shuzo's PCH Core kit 1 and the primer pairs shown in SEQ ID NOs: 22 to 23 and SEQ ID NOs: 24 to 25 according to the kit instructions.
- agarose electrophoresis prepared with 3% NuSieve (FMC) was performed to confirm the amplified product.
- FMC NuSieve
- the Asymetrix PCR method comprises a composition and a temperature cycle in which the primer of the sense strand is deleted from the first PCR method.
- spots B 1 -B 4 have the probes of SEQ ID NOs: 30-33, respectively, and the spots C 1 -B 4 ⁇ Probes of SEQ ID NOS: 34-36 are placed on C3, no probe is placed on spot C4, and SEQ ID NOs: 37-40 are placed on spots D1-D4, respectively.
- Probes, spots E1-E4 have probes of SEQ ID Nos. 41-44, respectively, spots F1-F4 have probes of SEQ ID Nos. 45-48, spot G1- Probes of SEQ ID NOs: 49-51 are assigned to G3, no probe is assigned to spot G4, and probes of SEQ ID NO: 29 are assigned to spots HI and H4, respectively.
- Probes of SEQ ID NOs: 52 and 53 were placed on spots H2 and H3, respectively. In rows A to D, probes for K-ras were used except for spots for primary use. In rows E to H, probes for P53 were used except for spots for markers. Are located.
- Hybridization The dried ethanol precipitate was dissolved well by adding 501 pure water to obtain a fluorescently labeled sample.
- 3x SSPE sodium phosphate buffer, technical data: DNA microarray and latest PCR method, cell engineering special edition Genome Science Series 1 Shujunsha
- 3x SSPE sodium phosphate buffer, technical data: DNA microarray and latest PCR method, cell engineering special edition Genome Science Series 1 Shujunsha
- the cells were suspended in 10% (V / V) ExpressHyb (Clontech) so as to have a 10% solution.
- the analysis of the high predication was performed by an experimental system in which a cooled CCD camera was connected to BX-51TFR manufactured by Olympus Optical.
- the experimental system is designed to automatically drive the solution around the reaction filter, control the temperature, and image the fluorescent spot.
- FIG. 7 shows the time change of the fluorescence spot of the DNA chip obtained by the experimental apparatus. From the bottom of Fig. 7, fluorescence images at 1, 10, 20, 30, and 40 minutes after the reaction were completed. It is set to be a degree. As is clear from the figure, the fluorescence intensity of most spots increased immediately after the reaction, and as the temperature was further increased, the level at which only one spot of P53 spotted in the upper part of the figure could be detected Fluorescence. (30 minutes later) In this state, the intensity of the fluorescent spot brightness of most K_Ras is not clear because the Tm value of the K-Ras gene of the immobilized probe is high. Therefore, by raising the temperature of the reaction chamber further, it became possible to clearly measure the intensity of the spot luminance of the K-Ras gene (after 40 minutes). A series of images was stored on the hard disk along with information such as temperature conditions.
- the obtained images were analyzed using analysis software programmed specifically for mutation detection.
- the analysis software can automatically determine the base sequence of the sample based on the base sequence of the probe spotted on the microarray used and the image information obtained as a result of the experiment.
- 3) Analyze the image obtained as a result of When the base sequence of samples of P53e X on7, it has been found that certain passing Ride shown in SEQ ID NO: 5 4.
- the nucleotide sequence containing K-RasCodonl2 was found to be as shown in SEQ ID NO: 55. From this, it was found that the nucleotide sequence of the sample was normal for both P53 and K-Ras. In this way, it was shown that the sequence of two genes can be rapidly analyzed by one reaction array.
- Fluorescent labels were incorporated by reverse transcription into mRNAs extracted from normal tissues and diseased tissues to synthesize single-stranded cDNA.
- the microarray was set in the device shown in Fig. 1 that can obtain a kinetic data of this sample, and a hybridizing reaction was performed on cDNA expressed from each tissue.
- a CCD camera was used to acquire the image data. It is necessary to set an appropriate exposure time for the brightness of the subject in the CCD camera, but the gene obtained depends on the degree of fluorescent labeling of the sample, the quantum efficiency of the fluorescent substance itself, the reaction efficiency of hybridization, etc. May cause a difference in brightness in the hybridized image.
- the light emission image of the spot In order to perform detection with high accuracy, the light emission image of the spot must be within an appropriate range of the dynamic range of the CCD. If this is not appropriate, a dark image or an image over the imaging range will not be obtained, and accurate detection cannot be performed. Without acquiring such undetermined imaging conditions in advance, the data was obtained by force exposure, the images were confirmed, and the reaction proceeded while setting the optimal imaging conditions. The obtained hybrid image is adjusted so that the maximum luminance is about 80% of the dynamic range of the CCD, and by analyzing the obtained image, it is possible to detect the hybrid image with high accuracy. Was.
- the sense strands SEQ ID NOS: 56-62 and the antisense strands of the seven 20-mer K-ras oncogene probes with mutations introduced in the K-ras codon 12 sequence) Nos. 63-69 and the sense strands of seventeen 17-mer K-ras oncogene probes (SEQ ID NOs: 70-76) with one or two bases removed from both ends of these probes.
- the antisense strand SEQ ID NOs: 77-83 were spotted in the arrangement shown in FIG.
- the Tm value of the 20-mer probe group is 56-58 ° C
- the Tm value of the 17-mer probe group is 47-49 ° C, Lower than that of the monomer.
- the source of the target gene can be, for example, a part of the human body, and more specifically, a tissue section collected from a cancerous tissue or the like, or obtained by a microdissection method or the like. Cell debris, cultured cells and the like can be mentioned.
- a human K-ras oncogene template set (Takara Shuzo Co., Ltd., Cat # 7242) was used. Gene amplification was performed on the seven types of templates using a PCR kit (Takara Shuzo, Cat # 7112) that can also amplify the codon 12 portion of the K-ras gene. For amplification, primers with FITC fluorescent label at the 5 'end were used. After completion of the PCR, agarose electrophoresis prepared with 3% NuSieve (FMC) was performed to confirm the amplified product.
- FMC NuSieve
- a 20-mer sense strand probe corresponding to the K-rasArg mutant of SEQ ID NO: 57 is arranged, and in spot 3, 20 corresponding to the K-rasCys mutant of SEQ ID NO: 58
- the probe of the sense strand of the dimer is arranged.
- a 20-mer antisense strand probe corresponding to K-rasWt in SEQ ID NO: 63 is arranged, and in spot 15 a 1-mer corresponding to K-rasWt in SEQ ID NO: 70 A 7-mer sense strand probe is located.
- a 17-mer antisense strand probe corresponding to K-rasWt in SEQ ID NO: 77 is arranged.
- Hybridization Sample 4 Add 10 ⁇ 1.25'.SSPE (sodium phosphate buffer, reference material: DNA microarray and latest PCR method, Cell Engineering Supplement Genome Science Series 1, Shujunsha) as a solution for chilling.
- SSPE sodium phosphate buffer, reference material: DNA microarray and latest PCR method, Cell Engineering Supplement Genome Science Series 1, Shujunsha
- a hybridization sample was prepared.
- the analysis of the hybridization was performed by an experimental system in which a cooled CCD camera was connected to BX-52 TRF manufactured by Olympus Optical. This experimental system is designed to automatically drive the solution around the reaction filter, control the temperature, and record the image of the fluorescent spot.
- a reaction solution of 501 was added to a reaction portion of a dedicated chamber in which a microarray having a diameter of 6 mm was installed, and a solution was driven and a temperature change was applied to obtain a fluorescence image.
- the experimental results obtained using the template-derived fluorescently labeled sample are shown below.
- a control sample a PCR product having a normal Ki- as oncogene sequence was used.
- the time change of the fluorescence spot of the microarray obtained when the temperature was given during the hybridization is shown in FIGS.
- the experimental system was programmed to accompany the solution drive and to provide a change in solution temperature.
- the temperature of the reaction chamber which was initially room temperature (25 ° C), is set to 55 ° C, and finally to 72 ° C.
- the fluorescence intensity of most spots increased immediately after the reaction.
- both the 17-mer group and the 20-mer group immobilized on the solid-phased probe had the same sequence as the sample among the probes with seven different base sequences. Strong fluorescence intensity can be seen in spots other than (Fig. 14). By further raising the temperature of the reaction chamber to 55 ° C, the fluorescence intensity of the mismatched spots (spots 16-21 and 23-28) gradually decreased in the 17-mer probe. However, only fluorescent spots (15 and 22) of Gly (codon 12 sequence GGT), which is actually a perfect match for the target nucleic acid, are observed (FIG. 15). However, each probe in the 20-mer group is still below the Tm value of the probe, and the signal strength and perfect match do not match.
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EP03703050A EP1469067A4 (en) | 2002-01-25 | 2003-01-24 | METHOD AND SYSTEM FOR DETECTING DATA RELATING TO A NUCLEIC ACID |
JP2003562285A JPWO2003062418A1 (ja) | 2002-01-25 | 2003-01-24 | 核酸情報の検出方法及び装置 |
US10/502,513 US20050079501A1 (en) | 2002-01-25 | 2003-01-24 | Method and apparatus for detecting nucleic acid data |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0535376A1 (en) * | 1991-08-30 | 1993-04-07 | Immunobion Ltd. | Analytical method of polymer |
JPH10127300A (ja) * | 1996-10-31 | 1998-05-19 | Hamamatsu Photonics Kk | 核酸の点変異の検出方法及び該方法を用いた遺伝子異常の検出方法 |
WO1999028500A1 (en) * | 1997-11-29 | 1999-06-10 | The Secretary Of State For Defence | Fluorimetric detection system of a nucleic acid |
EP1132484A2 (en) * | 2000-03-08 | 2001-09-12 | Fuji Photo Film Co., Ltd. | Method for testing complementation of nucleic acid |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0951569A2 (en) * | 1996-12-23 | 1999-10-27 | University Of Chicago | Customized oligonucleotide microchips as multiple biosensors |
US6699661B1 (en) * | 1999-04-20 | 2004-03-02 | Kankyo Engineering Co., Ltd. | Method for determining a concentration of target nucleic acid molecules, nucleic acid probes for the method, and method for analyzing data obtained by the method |
JP3871846B2 (ja) * | 2000-03-10 | 2007-01-24 | 日立ソフトウエアエンジニアリング株式会社 | ハイブリダイゼーション反応検出方法及び検出装置 |
-
2003
- 2003-01-24 US US10/502,513 patent/US20050079501A1/en not_active Abandoned
- 2003-01-24 EP EP03703050A patent/EP1469067A4/en not_active Withdrawn
- 2003-01-24 WO PCT/JP2003/000668 patent/WO2003062418A1/ja not_active Application Discontinuation
- 2003-01-24 JP JP2003562285A patent/JPWO2003062418A1/ja not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0535376A1 (en) * | 1991-08-30 | 1993-04-07 | Immunobion Ltd. | Analytical method of polymer |
JPH10127300A (ja) * | 1996-10-31 | 1998-05-19 | Hamamatsu Photonics Kk | 核酸の点変異の検出方法及び該方法を用いた遺伝子異常の検出方法 |
WO1999028500A1 (en) * | 1997-11-29 | 1999-06-10 | The Secretary Of State For Defence | Fluorimetric detection system of a nucleic acid |
EP1132484A2 (en) * | 2000-03-08 | 2001-09-12 | Fuji Photo Film Co., Ltd. | Method for testing complementation of nucleic acid |
Non-Patent Citations (1)
Title |
---|
See also references of EP1469067A4 * |
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JP4714497B2 (ja) * | 2005-03-30 | 2011-06-29 | 株式会社島津製作所 | 反応容器処理装置 |
JP2006271347A (ja) * | 2005-03-30 | 2006-10-12 | Shimadzu Corp | 反応容器処理装置 |
JP4711716B2 (ja) * | 2005-03-30 | 2011-06-29 | 株式会社島津製作所 | 反応容器処理装置 |
JP4697781B2 (ja) * | 2005-03-30 | 2011-06-08 | 株式会社島津製作所 | 反応容器処理装置 |
JPWO2006106867A1 (ja) * | 2005-03-30 | 2008-09-11 | 株式会社島津製作所 | 遺伝子多型診断用装置 |
JP2006271346A (ja) * | 2005-03-30 | 2006-10-12 | Shimadzu Corp | 反応容器処理装置 |
JP4654795B2 (ja) * | 2005-06-28 | 2011-03-23 | パナソニック株式会社 | 生体分子検出方法 |
JP2007010325A (ja) * | 2005-06-28 | 2007-01-18 | Matsushita Electric Ind Co Ltd | 生体分子検出方法及び光学読み取り装置 |
JP2007143407A (ja) * | 2005-11-24 | 2007-06-14 | Shimadzu Corp | 反応容器及び反応容器処理装置 |
JP2007175005A (ja) * | 2005-12-28 | 2007-07-12 | Shimadzu Corp | 反応容器及び反応容器処理装置 |
Also Published As
Publication number | Publication date |
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EP1469067A1 (en) | 2004-10-20 |
EP1469067A4 (en) | 2007-05-23 |
WO2003062418B1 (fr) | 2004-04-01 |
US20050079501A1 (en) | 2005-04-14 |
JPWO2003062418A1 (ja) | 2005-05-19 |
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