WO2013105774A1 - 절단 가능한 프로브를 이용한 c-Met 유전자 검출 방법 - Google Patents
절단 가능한 프로브를 이용한 c-Met 유전자 검출 방법 Download PDFInfo
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- WO2013105774A1 WO2013105774A1 PCT/KR2013/000139 KR2013000139W WO2013105774A1 WO 2013105774 A1 WO2013105774 A1 WO 2013105774A1 KR 2013000139 W KR2013000139 W KR 2013000139W WO 2013105774 A1 WO2013105774 A1 WO 2013105774A1
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- 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
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
- C12Q1/6886—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material for cancer
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- 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
- C12Q1/6844—Nucleic acid amplification reactions
- C12Q1/6851—Quantitative amplification
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- C12Q2600/00—Oligonucleotides characterized by their use
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- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/158—Expression markers
Definitions
- the present invention relates to a cancer diagnostic kit and a diagnostic method using the same, and a kit capable of detecting a gene in real time using a primer pair and a cleavable probe and a diagnostic method using the same.
- c-Met is a receptor for hepatocyte growth factor (HGF), and HGF binds to the extracellular site of the c-Met receptor tyrosine kinase, resulting in division, movement, morphogenesis, and angiogenesis in various normal and tumor cells. It is a kind of cytokine that causes it.
- c-Met is a representative receptor tyrosine kinase on the cell surface, which is itself a cancer-causing gene and sometimes, regardless of its ligand, HGF, such as cancer development, cancer metastasis, cancer cell migration, cancer cell invasion, and neovascularization It is a protein that has recently attracted attention as an anticancer target because it is involved in various mechanisms related to tumors.
- c-Met is overexpressed in many types of cancer, and in particular, overexpression of c-Met is known to be associated with a poor cause of cancer in patients. Therefore, a primer set capable of specifically amplifying a gene on c-Met can be used to measure the progress of a patient's cancer from a clinical sample taken from the patient. In addition, the primer set may be used as important information in the decision to select a therapeutic agent or treatment for cancer. Accordingly, there is a need for the development of primers or probes that specifically bind to c-Met genes or mRNA, and diagnostic kits capable of confirming the degree of overexpression of c-Met genes or mRNA.
- PCR polymerase chain reaction
- the detection kit and diagnostic method using the probe of the present invention were developed.
- One embodiment provides a kit for detecting a c-Met gene comprising a primer pair and a cleavable probe.
- Another embodiment provides a method of detecting a c-Met gene using a kit for detecting a c-Met gene comprising a primer pair and a cleavable probe.
- One aspect is that the expression level of the c-Met gene comprising a primer pair that specifically binds to the c-Met gene and a cleavable probe that specifically binds to the c-Met amplification product amplified by the primer pair. It provides a detection kit for detecting.
- kits for detecting a c-Met gene comprising a primer consisting of a nucleic acid of SEQ ID NO: 1, a primer consisting of a nucleic acid of SEQ ID NO: 2, and a cleavable probe consisting of a nucleic acid of SEQ ID NO: 7.
- kits for detecting a c-Met gene comprising a primer composed of a nucleic acid of SEQ ID NO: 3, a primer composed of a nucleic acid of SEQ ID NO: 4, and a cleavable probe composed of a nucleic acid of SEQ ID NO: 8.
- kits for detecting a c-Met gene comprising a primer composed of a nucleic acid of SEQ ID NO: 5, a primer composed of a nucleic acid of SEQ ID NO: 6, and a cleavable probe composed of a nucleic acid of SEQ ID NO: 9.
- c-Met gene means a gene encoding a receptor tyrosine kinase that binds to hepatocyte growth factor.
- GenBank Aceession Number NM_000245 or GenBank Aceession Number NM_000236, which encodes a c-Met protein may be used.
- the c-Met protein is overexpressed in many types of cancers.
- the overexpression of c-Met is known to be associated with the poor prognosis of cancer in patients.
- cancer that can be diagnosed by measuring the overexpression of the c-Met gene, which can cause overexpression of c-Met protein may include carcinoma, lymphoma, blastoma, sarcoma, and leukemia.
- the cancer may be, for example, bladder cancer, breast cancer, cervical cancer, cholangiocarcinoma, colon cancer, endometrial cancer, esophageal cancer, stomach cancer, head and neck cancer, kidney cancer, liver cancer, lung cancer, nasopharyngeal cancer, ovarian cancer, pancreatic cancer, gallbladder cancer, prostate cancer , Thyroid cancer, osteosarcoma, rhabdomyosarcoma, synovial sarcoma, kaposi's sarcoma, leiomyosarcoma, malignant fibrous histiocytoma, fibrosarcoma, adult T-cell leukemia, lymphoma, multiple myeloma, glioblastoma / astrocytoma, melanoma, mesothelioma and Wilms' tumor Including but not limited to.
- primer may be used interchangeably with “oligonucleotide” or “polynucleotide”.
- the primers refer to oligonucleotides that serve as a starting point for starting DNA synthesis in a PCR reaction. Primers are generally 15 to 35 nucleotides and hybridize with regions complementary to the target sequence.
- probe refers to an oligonucleotide that specifically binds to a target sequence and is intended to hybridize in a sequence-specific manner with complementary regions of specific nucleic acid sequences, such as, for example, target nucleic acid sequences. Polynucleotides comprising specific moieties designed. In one embodiment, the oligonucleotide probe ranges from 15 to 60 nucleotides. Preferably, the oligonucleotide probe ranges from 18 to 30 nucleotides.
- cleavable probe means a probe consisting of two kinds of nucleic acid, for example, that some nucleotides in a DNA probe are RNA.
- the cleavable probe may include a DNA of 1 to 10 substituted with RNA, a DNA of 2 to 8 may be substituted with RNA, and a DNA of 3 to 7 may be substituted with RNA, It is not limited to this.
- RNA may be located in the probe continuously, but may be located in the probe non-continuously. More preferably, it may be any one of probes as SEQ ID NOS: 7 to 9, but is not limited thereto.
- both ends or the inside of the cleavable probe may be labeled with a detectable substance. It includes an RNase enzyme that can specifically cleave the RNA sequence portion of the RNA-DNA double strand in a PCR reaction. By RNase, after cleavage, all of the fragments of the probe dissociate in the target amplicon at the reaction temperature and are dispersed in the reaction solution. As the labeled donor and receptor are separated inside the pro portion, the fluorescence emission by the donor can be monitored.
- label or “detectable lebel” refers to a fluorescent dye compound bound to a probe by covalent or non-covalent bonds, and refers to FRET (Forter Resonance Energy Transfer) of fluorescent donors and fluorescent receptors. It can be a pair.
- FRET Forward Resonance Energy Transfer
- fluorescent refers to a fluorescent compound that is excited by light of a shorter wavelength than emitted light and emits light.
- fluorescent donor means a fluorescent dye that emits light as measured in the assays disclosed herein.
- the fluorescent donor can provide light absorbed by the fluorescent acceptor.
- fluorescent receptor also refers to a second fluorescent dye or quencher that absorbs the energy emitted from the fluorescent donor. The second fluorescent dye absorbs energy emitted from the fluorescent donor and emits light of a longer wavelength than the light emitted by the fluorescent donor. The quenching molecule absorbs the energy released by the fluorescent donor.
- any luminescent molecule preferably a fluorescent dye and / or fluorescent quencher, can be used in the practice of the present invention.
- the light emitting molecule may be, for example, Alexa Fluor 350, Alexa Fluor 430, Alexa Fluor 488, Alexa Fluor 532, Alexa Fluor 546, Alexa Fluor 568, Alexa Fluor 594, Alexa Fluor 633, Alexa Fluor 647, Alexa Fluor 660, Alexa Fluor 680, 7-diethylaminocowmarin-3-carboxylic acid, fluorescein, Oregon Green 488, Oregon Green 514, tetramethyltamine, rhodamine X, Texas red dye, QSY 7, QSY33, Dabcyl, BODIPY FL , BODIPY 630/650, BODIPY6501665, BODIPY TMR-X, BODIPY TR-X, dialkylaminocoumarin, Cy3 (cyanine 3), Cy3.5, Cy5.5, Cy5,
- the c-Met gene detection kit may additionally include a thermostable polymerase, RNase, the enzyme included in the kit may be a thermostable polymerase and a thermostable RNase.
- thermoostable refers to an enzyme that retains its biological activity at elevated temperatures (eg, 55 ° C. or higher), or maintains biological activity upon repeated cycles of heating and cooling. it means.
- Thermostable polynucleotide polymerases can be used in particular in PCR amplification reactions.
- the heat stable polymerase may be Taq polymerase. It may be any one Taq polymerase selected from the group consisting of AmpliTaq, AmpliTaq Stoffel fragment, SuperTaq, SuperTaq plus, LA Taq, LApro Taq, and EX Taq.
- the term "RNase” refers to an enzyme that specifically cleaves RNA.
- the RNA may be RNA forming a double strand, and the double strand may be a hybrid double strand in which RNA and DNA are combined.
- the kit may be provided in the form of a kit including a packaging unit having one or more reaction reagents.
- the kit may also include one or more of the following items: buffers, instructions, and positive or negative controls.
- the kit may comprise containers of reaction reagents mixed in appropriate proportions to carry out the methods described herein.
- the reaction reagent vessels preferably contain a unit quantity of reaction reagent so that the measuring step can be omitted when performing the method.
- the kit reagent further comprises a reagent for extracting genomic DNA or RNA from a biological sample.
- Kit reagents may also include reagents for application to reverse transcriptase-PCR analysis.
- a first primer-probe set consisting of a primer consisting of a nucleic acid of SEQ ID NO: 1, a primer consisting of a nucleic acid of SEQ ID NO: 2, and a cleavable probe consisting of a nucleic acid of SEQ ID NO: 7, a primer consisting of a nucleic acid of SEQ ID NO: 3,
- a second primer-probe set consisting of a primer consisting of a nucleic acid and a cleavable probe consisting of a nucleic acid of SEQ ID NO: 8 and a primer consisting of a nucleic acid of SEQ ID NO: 5, a primer consisting of a nucleic acid of SEQ ID NO: 6, and a cleavage consisting of a nucleic acid of SEQ ID NO: 9
- the method may include obtaining DNA from a sample.
- the sample may be taken from a cancer patient or a person for diagnosing cancer progression, or may be taken directly from a specific body part.
- the DNA may be a genomic DNA (gDNA), a complementary DNA (cDNA), and a DNA fragment.
- the method of obtaining the DNA may be extracted directly from the cell.
- cDNA can be obtained through reverse transcription PCR after obtaining mRNA from cells.
- a first primer-probe set consisting of a primer consisting of a nucleic acid of SEQ ID NO: 1, a primer consisting of a nucleic acid of SEQ ID NO: 2, and a cleavable probe consisting of a nucleic acid of SEQ ID NO: 7, a primer consisting of a nucleic acid of SEQ ID NO: 3, SEQ ID NO:
- a second primer-probe set consisting of a primer consisting of a nucleic acid of 4 and a cleavable probe consisting of a nucleic acid of SEQ ID NO: 8 and a primer consisting of a nucleic acid of SEQ ID NO: 5, a primer consisting of a nucleic acid of SEQ ID NO: 6, and a nucleic acid of SEQ ID NO: 9
- Both ends of the cleavable probe may be labeled with a detectable substance, and may be labeled with a FRET (Forter Resonance Energy Transfer) pair of a fluorescent donor and a fluorescent receptor.
- FRET Forward Resonance Energy Transfer
- the amplified by mixing the polymerase, RNase and amplification buffer to the mixed sample.
- the polymerase and RNase have thermal stability, any kind of enzyme can be used.
- buffers are compounds that are added to an amplification reaction to modify the stability, activity, and / or lifetime of one or more elements of the amplification reaction.
- the buffer may be compatible with PCR amplification and RNase H cleavage activity.
- buffers include HEPES (4- (2-hydroxyethyl) -1-piperazineethanesulfonic acid), MOPS (3- (N-morpholino) -propanesulfonic acid), buffers containing acetate or phosphate, and the like. Including but not limited to
- PCR buffers may generally comprise up to about 70 mM KCl and about 1.5 mM or more MgCl 2 , about 50-200 uM of each dATP, dCTP, dGTP and dTTP.
- the buffer may also include additives to optimize efficient reverse transcriptase-PCR or PCR reactions.
- Additives are compounds added to modify the stability, activity and / or life of one or more elements of the composition.
- additives that may be included in the amplification reaction are betaine, formamide, KCl, CaCl 2 , MgOAc, MgCl 2 , NaCl, NH 4 OAc, NaI, Na (CO 3 ) 2 , LiCl, MnOAc, NMP, trehalose, demi Ethyl sulfoxide (DMSO), glycerol, ethylene glycol, dithiothreitol (DTT), pyrophosphatase, inorganic pyrophosphatase (TAP), cations, and other compounds, proteins, or other compounds that can change the efficiency of amplification Co-factors include but are not limited to. Additives may optionally be added to enhance the selectivity of primer annealing.
- the method may include detecting an increase in the signal emitted from the label on the probe.
- the signal emitted can be fluorescence and the results of fluorescence emission can be detected using a suitable device such as the Applied Biosystems 7500 Fast Real-Time PCR System or Biorad CFX96 real-time PCR thermocycler, but any device available in the art Can be used.
- the method may include a reverse transcription PCR step of obtaining RNA from a sample and providing cDNA obtained by amplification with a reverse transcriptase enzyme as a DNA of the sample.
- RNA may be obtained from a cancer patient or a person seeking medical care, and then amplified by reverse transcriptase to obtain cDNA.
- reverse transcription to cDNA using a reverse transcriptase can be used in all methods that can be used in the art.
- the reverse transcription PCR uses one of the template specific DNA primers to generate complementary DNA strands.
- the product is then denatured in a PCR reaction and the second template specific primer is expanded to bind to the cDNA to form duplex DNA.
- This product is amplified in the next step of temperature cycling. In order to maintain the highest sensitivity, it is important that the RNA is not degraded prior to the synthesis of cDNA.
- the expression of very small amount of c-Met can be detected in real time, and thus, various cancers associated with over-expression of c-Met can be detected. Diagnosis and prognosis can be easily determined.
- 1 is an experimental result of amplifying the c-MET target nucleotide sequence using the primer-probe set 1.
- Figure 2 is an experimental result of amplifying the c-MET target nucleotide sequence using the primer-probe set 2.
- Figure 3 is an experimental result of amplifying the c-MET target nucleotide sequence using the primer-probe set 3.
- primers and probes for c-MET detection F: forward, R: reverse, IN: CataCleave: 3 sets in total RNA (synthesized by Integrated DNA Technologies, Inc.).
- Table 1 set ID order SEQ ID NO: Combined position bp One F TCATGGGTCAATTCAGCGAAGTCCTCT SEQ ID NO: 1 Exon 3 27 IN TGGGACATC agag GGTCGCTTCA SEQ ID NO: 7 Exon 3-4 23 R TGGAGACACTGGATGGGAGTCCA SEQ ID NO: 2 Exon 4 23 2 F CTCCTGGGAATCTGCCTGCGA SEQ ID NO: 3 Exon 17 21 IN AAGGGTCT ccgc TGGTGGTC SEQ ID NO: 8 Exon 17 20 R TGCAGCCAAGTCTCTGTGGACAAAC SEQ ID NO: 4 Exon 18 25 3 F GGCAGTGCAGCATGTAGTGATTGG SEQ ID NO: 5 Exon 15 24 IN GCCCAGTAGCC ugau TGTGCATTTCA SEQ ID NO: 9 Exon 15 26 R TGATGATTCCCTCGGTCAGAAATTGGG SEQ ID NO: 6 Exon 17 27
- 6-FAM was used as a fluorescent dye at the 5 'end of the DNA of the catacleave probe, which is a cleavable probe
- Iowa Black RQ was used as the quencher at the 3' end.
- the MET-1 gene was used for the first and second sets of positive reactions (SEQ ID NO: 10) and the MET-2 gene was used for the third set of positive reactions (SEQ ID NO: 11).
- the polynucleotide encoding the gene sequence was inserted into the EcoR1 / BamH1 site of pGEM-3Z (promega) and used as a positive sample.
- the primers, probes and amplification buffer (32 mM HEPES-KOH, pH 7.8, 100 mM potassium acetate, 4 mM magnesium acetate, 0.11% bovine serum albumin, 1% dimethylsulfoxide), dUTP / NTP mix (80 ⁇ M of dGTP, dCTP, dATP and 160 ⁇ M dUTP), 2.5 units of Thermus aquaticus DNA polymerase, 1 unit of Pyrococcus furiosis HII, and 0.1 units of uracil-N-glycosylase was performed in RABI7500 (applied biosystem) according to the following cycling protocol: Initial denaturation was carried out at 95 ° C. for 5 minutes; Denaturation at 95 ° C.
- the primers and probes of one embodiment When the primers and probes of one embodiment are used, very low concentrations of the c-Met gene can be easily detected as compared with the conventional PCR. Therefore, when using the primer-probe set of one embodiment, it can be usefully used to easily determine the expression of c-Met after performing reverse transcription PCR.
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Abstract
Description
세트 | ID | 서열 | 서열번호 | 결합 위치 | bp |
1 | F | TCATGGGTCAATTCAGCGAAGTCCTCT | 서열번호1 | Exon 3 | 27 |
IN | TGGGACATCagagGGTCGCTTCA | 서열번호7 | Exon 3-4 | 23 | |
R | TGGAGACACTGGATGGGAGTCCA | 서열번호2 | Exon 4 | 23 | |
2 | F | CTCCTGGGAATCTGCCTGCGA | 서열번호3 | Exon 17 | 21 |
IN | AAGGGTCTccgcTGGTGGTC | 서열번호8 | Exon 17 | 20 | |
R | TGCAGCCAAGTCTCTGTGGACAAAC | 서열번호4 | Exon 18 | 25 | |
3 | F | GGCAGTGCAGCATGTAGTGATTGG | 서열번호5 | Exon 15 | 24 |
IN | GCCCAGTAGCCugauTGTGCATTTCA | 서열번호9 | Exon 15 | 26 | |
R | TGATGATTCCCTCGGTCAGAAATTGGG | 서열번호6 | Exon 17 | 27 |
Claims (9)
- 서열번호 1의 핵산으로 구성된 프라이머, 서열번호 2의 핵산으로 구성된 프라이머 및 서열번호 7의 핵산으로 구성된 절단 가능한 프로브를 포함하는 c-Met 유전자 검출용 키트.
- 서열번호 3의 핵산으로 구성된 프라이머, 서열번호 4의 핵산으로 구성된 프라이머 및 서열번호 8의 핵산으로 구성된 절단 가능한 프로브를 포함하는 c-Met 유전자 검출용 키트.
- 서열번호 5의 핵산으로 구성된 프라이머, 서열번호 6의 핵산으로 구성된 프라이머 및 서열번호 9의 핵산으로 구성된 절단 가능한 프로브를 포함하는 c-Met 유전자 검출용 키트.
- 제1항 내지 제3항의 어느 한 항에 있어서, 열안정 폴리머라제 및 RNase를 추가로 포함하는 c-Met 유전자 검출용 키트.
- 제1항 내지 제3항의 어느 한 항에 있어서, 상기 절단 가능한 프로브는 프로브 내부에 1 내지 10의 DNA가 RNA로 치환된 것인 c-Met 유전자 검출용 키트.
- 제1항 내지 제3항의 어느 한 항에 있어서, 상기 절단 가능한 프로브는 프로브 내부에 3 내지 7의 DNA가 RNA로 치환된 것인 c-Met 유전자 검출용 키트.
- 제5항에 있어서, 상기 절단 가능한 프로브는 서로 다른 DNA 부분의 양 말단에 검출가능한 물질로 표지된 것인 c-Met 유전자 검출용 키트.
- 제7항에 있어서, 상기 검출가능한 표지는 FRET 쌍으로 표지된 것인 c-Met 유전자 검출용 키트.
- 시료에서 DNA를 수득하는 단계;서열번호 1의 핵산으로 구성된 프라이머, 서열번호 2의 핵산으로 구성된 프라이머 및 서열번호 7의 핵산으로 구성된 절단 가능한 프로브로 구성된 제1 프라이머-프로브 세트, 서열번호 3의 핵산으로 구성된 프라이머, 서열번호 4의 핵산으로 구성된 프라이머 및 서열번호 8의 핵산으로 구성된 절단 가능한 프로브로 구성된 제2 프라이머-프로브 세트 및 서열번호 5의 핵산으로 구성된 프라이머, 서열번호 6의 핵산으로 구성된 프라이머 및 서열번호 9의 핵산으로 구성된 절단 가능한 프로브로 구성된 제3 프라이머-프로브 세트로 구성된 군으로부터 선택되는 어느 하나를 시료와 혼합하는 단계;상기 혼합된 시료에 폴리머라제, RNase 및 증폭 완충액을 혼합하여 증폭시키는 단계; 및상기 프로브 상의 표지로부터 방출되는 신호 증가를 검출하는 단계를 포함하는 c-Met 유전자를 검출하는 방법.
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US14/371,230 US9587280B2 (en) | 2012-01-09 | 2013-01-09 | Method for detecting a c-Met gene using cleavable probe |
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US20150247200A1 (en) | 2015-09-03 |
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KR101404682B1 (ko) | 2014-06-10 |
CN104160026B (zh) | 2016-04-20 |
US9587280B2 (en) | 2017-03-07 |
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