WO1999013065A1 - Nouvelle amorce et son utilisation - Google Patents
Nouvelle amorce et son utilisation Download PDFInfo
- Publication number
- WO1999013065A1 WO1999013065A1 PCT/JP1998/004076 JP9804076W WO9913065A1 WO 1999013065 A1 WO1999013065 A1 WO 1999013065A1 JP 9804076 W JP9804076 W JP 9804076W WO 9913065 A1 WO9913065 A1 WO 9913065A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gene
- milk
- keratin
- primer
- ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4732—Casein
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4741—Keratin; Cytokeratin
-
- 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
- C12Q1/6876—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
-
- 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
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/158—Expression markers
Definitions
- the present invention relates to a primer that hybridizes with a keratin gene or an S 1 -casein gene.
- the primers of the present invention can be used for the examination of mastitis in mammals such as sea urchin, and for measuring the level of milk protein synthesis in mammary gland cells.
- Landscape technology
- Mastitis refers to inflammation of the breast tissue caused by pathogenic microorganisms that have entered the breast. Big.
- the principle of mastitis control is early detection and early treatment, and as a diagnostic method using milk, a somatic cell count method and a PL test are generally used. These methods use the phenomenon that the number of somatic cells in milk increases when mastitis is affected, and the phenomenon that the pH of milk leans toward the Alkali side. It is considered that this method is not always sufficient as an early method for detecting mastitis.
- mastitis milk shows component fluctuations, but casein is characterized by a decrease.
- milk yield or milk fat percentage has been widely used in the past as an index for assessing the performance of the sea bream.
- milk protein percentages have been attracting attention due to the spread of health orientation or dairy production.
- high casein among milk proteins Is attracting much attention as an index of milk quality evaluation.
- the conventional method is to separate casein from milk and measure the nitrogen content of the casein fraction. The operation is complicated, requires a long time for measurement, and requires a detailed study of sensitivity. Was not enough.
- a method for simply measuring the amount of casein in milk using infrared spectroscopy or near-infrared spectroscopy has been developed.However, there is a problem in the consistency with actual measured values by the conventional method. Is left.
- mastitis-causing bacterium invades the breast from the ducts and attaches to the mammary epithelial cells. Possible mechanisms are inhibited. In other words, it is considered that mastitis can be detected early by measuring the change in the ability of mammary gland epithelial cells to synthesize milk by some method.
- the present inventors have determined that the most representative protein among milk proteins synthesized by breast mammary epithelial cells is S1- force zein as an index.
- RT-PCR reverse transcription-polymerase chain reaction
- PCR method U.S. Pat. Nos. 4,683,195 and 4,683,202.
- the PCR method has been used as a method for detecting the transcript amount of mRNA with high sensitivity. This method has made it possible to measure qualitatively or quantitatively the expressed protein in cells with high sensitivity.
- RNA In order to extract RNA from milk, it is necessary to minimize the degradation of RNA by RNase, and when extracting cell-derived RNA, the number of mammary epithelial cells in the milk is similar to that of other cells. Very low compared to milk components for RNA extraction In order to remove as much of the effect as possible, it is necessary to centrifuge the milk to obtain cell pellets before extracting RNA.
- the keratin gene is a cytoskeletal gene that is specifically expressed only in epithelial cells.There are various types, and the type of keratin gene that is expressed differs depending on the species and site.
- the primer used as an indicator of the amount needs to hybridize with the keratin gene expressed in the mammary epithelial cells of the cyst, and the expression amount of the keratin gene needs to correlate with the number of epithelial cells. In addition, it sheds s! Casein is known to have four genetic variants, and it is necessary to use a primer that hybridizes with any sl -casein variant gene for a versatile detection method. Disclosure of the invention
- the present inventors have intensively studied a method for preparing RNA from milk and a highly accurate method for detecting mastitis using the obtained RNA.
- the milk is quickly cooled to ice temperature, diluted with buffer, centrifuged, and, if necessary, repeated, and RNA is extracted from the resulting cell pellet.
- a method for preparing RNA from mammary epithelial cells was found.
- the range of amplification of the RNA prepared by this method by PCR for basic (type 2) component 3 keratin which is expressed in correlation with the cell number in breast mammary epithelial cells, is considered in consideration of the reaction efficiency.
- a primer that amplifies a part of the s , -casein gene designed to be amplified to 351 bp in size is synthesized according to a conventional method, and is used for reverse transcription-polymerase chain reaction (RT-PCR).
- RT-PCR reverse transcription-polymerase chain reaction
- an object of the present invention is to provide a novel DNA which is a primer which hybridizes with the keratin gene or the sl -casein gene.
- Another object of the present invention is to provide a method for amplifying a keratin gene and a Z or casein gene using the primer.
- Still another object of the present invention is to provide a method for examining the breast or measuring the level of milk protein synthesis of breast cells using the method for amplifying the keratin gene and the Z or casein gene. Is to do.
- the present invention relates to a primer represented by any one of SEQ ID NOs: 1 to 4 in the sequence listing.
- the present invention also relates to a primer which hybridizes with a keratin gene represented by SEQ ID NO: 1 or 2 in the sequence listing.
- the present invention also relates to a primer that hybridizes with the s, -force zein gene represented by SEQ ID NO: 3 or 4 in the sequence listing.
- the present invention relates to a method for amplifying a keratin gene and Z or casein gene contained in milk by reverse transcription-polymerase chain reaction (RT-PCR) using these primers.
- RT-PCR reverse transcription-polymerase chain reaction
- the milk is quickly cooled to ice temperature, diluted with a buffer solution, centrifuged, and RNA is extracted from the obtained precipitate.
- RNA is extracted from the obtained precipitate.
- the present invention calculates the ratio of the expression level of the sl -force zein gene in milk to the keratin gene expression level using these gene amplification methods, and indicates this ratio.
- the present invention relates to a method for examining mastitis morbidity or measuring the level of milk protein synthesis in mammary cells using as a target.
- the present invention relates to the primer shown in any one of SEQ ID NOs: 1 to 4 in the sequence listing. Then, this primer hybridized with the keratin gene, and CAG-TGT-CGG-GGG-CTC-TGG (SEQ ID NO: 1) or ATG-TGG-GTC-TGC-GAT-AGG-CT (SEQ ID NO: SEQ ID NO: 1) 2) has the sequence represented by In addition, it hybridizes with the sl -casein gene and uses GTC-AAG-TGA-ATT-CTG-AGG (SEQ ID NO: 3) or TGG-CAC-TTA-CAG-GAG-AAG (SEQ ID NO: 4). Has the sequence represented.
- oligonucleotides are designed with attention to high specificity, size, GC content, Tm value, etc., and can be obtained by chemical synthesis or the like according to a conventional method. In addition, purity and synthesized amount can be confirmed by electrophoresis and absorbance measurement.
- the present invention uses these primers to diagnose mastitis, particularly mastitis.
- Milk used as a test object in the present invention is not particularly limited as long as it is mammalian, but maggot milk is particularly preferably used.
- RNA of cells contained in milk to be tested according to the present invention is prepared as follows. That is, collect milk in a sanitary environment as much as possible and immediately cool to ice temperature. Milk is diluted with an appropriate buffer, preferably physiological phosphate buffer (PBS (-)), and centrifuged. Separate and collect the precipitate. If necessary, repeat the dispersion and centrifugation in a buffer solution, preferably PBS (-). From the precipitate thus obtained, RNA derived from cells contained in milk is extracted by a conventional method. It is also possible to extract mRNA if necessary.
- PBS physiological phosphate buffer
- RNA RNA as a type II
- a reverse transcription reaction is performed with a reverse transcriptase to synthesize complementary DNA (cDNA).
- an oligo dT primer or a random primer particularly preferably an oligonucleotide represented by SEQ ID NO: 2 or SEQ ID NO: 4 Is used as an antisense primer.
- the obtained cDNA is used as type III
- the oligonucleotide shown in SEQ ID NO: 1 is used as a sense primer
- the oligonucleotide shown in SEQ ID NO: 2 is used as an antisense primer, or as shown in SEQ ID NO: 3.
- PCR is performed using a DNA polymerase. After separating this PCR reaction solution by electrophoresis, it is stained with an appropriate coloring agent, preferably ethidium bromide solution, and the stained band is measured as a staining intensity by an image analyzer or the like.
- an appropriate coloring agent preferably ethidium bromide solution
- Keratin gene expression level, and the staining intensity of the band in the PCR reaction solution obtained using the oligonucleotide shown in SEQ ID NO: 3 as a sense primer and the oligonucleotide shown in SEQ ID NO: 4 as an antisense primer S S 1 — is the expression level of the casein gene.
- this value is 1.0 or more, it is normal, if it is 0.5 or more and less than 1.0, it is diagnosed as mild mastitis, and if it is less than 0.5, it is diagnosed as severe mastitis.
- the aforementioned O Ri resulting keratin gene expression and non-in method s, - the Kazin gene expression level by obtaining the ratio of keratin gene expression of Yore a sl Ichiriki Zin gene expression, in a subject breast non s i of mammary epithelial cells - Ru can be obtained casein gene expression level. By comparing this value under different conditions or different feed conditions, it can be used as a standard for evaluating maggot milk quality, such as casein synthesis ability, or for evaluating feed.
- the above measurement method is shown in the flow chart as follows.
- Primer Primer Any one type and reverse transcriptase Any one type and reverse transcriptase reaction using reverse transcriptase Reverse transcriptase reaction using reverse transcriptase SEQ ID NO: 1 SEQ ID NO: 3
- FIG. 1 is an electropherogram of RNA extracted from milk of Example 1.
- the lanes 1 to 10 show the pesticide specimen numbers, and 18 s and 28 s show the ribosome RNA.
- FIG. 2 S 1 of the sample in Example 2 - in c illustrations that are electropherogram of casein and keratin, the lane 1-10 is ⁇ shea sample number, M the molecular weight, also 274bp and 351bp purposes Shows the respective bands.
- the milk of the 10 birds shown in Table 1 was collected in sterilized containers, 50 ml each, immediately cooled on ice, and then transported to the laboratory under cooling conditions.
- the milk was diluted 2-fold with PBS (-), centrifuged at 1,5006 for 5 minutes, and the precipitate was collected.
- the obtained precipitate was dispersed in 50 ml of PBS (-), and centrifuged under the same conditions to collect the precipitate.
- RNA was extracted using RNAzol (Tel'Test) to obtain a sample.
- the obtained sample was subjected to SDS-polyacrylamide electrophoresis, and the ratio of absorbance at wavelengths of 260 nm and 280 nm was measured.
- the electrophoretogram is shown in Fig. 1, and the absorbance ratio is shown in Table 1.
- the amount of RNA is measured by the absorbance at 260 nm, impurities (proteins, etc.) are measured by the absorbance at 280 nm, and the purity is measured by this ratio, that is, (absorbance at 260 nm) Z (absorbance at 280 nm). If the RNA is pure, the absorbance ratio will be 2.0. When the absorbance ratio is 1.9 to 2.1, it can be judged that the purity is extremely high, and the sample can be used for RT-PCR.
- RNA obtained in Example 1 to each of the cells in two micro-tubes so that the total RNA becomes 1 g each, and use the primer shown in SEQ ID NO: 2 in one tube.
- the primary strand cDNA was synthesized using reverse transcriptase (Gibco) using the primer shown in SEQ ID NO: 4. Transfer the reaction mixture to separate microtubes, 1 ⁇ 1 each, and confirm the correctness of AmpliTaqDNA polymerase (perkin
- the conditions were denaturation 96 ° C, 1 minute, annealing 56 ° C, flame 1 minute, chain extension reaction 72 ° C, 1 minute.
- visualization is performed by ethidium-bubble-mide staining, and it is taken into Combi-Yuichi (Apple Inc.) with a scanner (Heureett Packard) and image analysis software (the staining intensity of purpose bands of purpose band and sl _ Kazin gene shed in a sample of 351bp in the sample keratin gene of 274bp was quantified by NIHImage).
- the band staining state is shown in FIG.
- the present invention keratin contained in the milk by the novel primer primary, shed S 1 Ichiriki Zin gene High Priestess soybeans to novel primer primary, and RT-PCR using these plies Ma one keratin gene Haiburidizu A method for amplifying a gene and / or a casein gene is provided. Further, a method for examining mastitis and a method for measuring the level of milk protein synthesis in mammary gland cells using the method are provided.
- the present invention provides a simple, rapid, and highly accurate method for examining mastitis without removing mammary tissue, particularly as a method for examining mastitis, or as a method for measuring the level of milk protein synthesis in breast cells. Useful.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Genetics & Genomics (AREA)
- Zoology (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Medicinal Chemistry (AREA)
- Wood Science & Technology (AREA)
- Gastroenterology & Hepatology (AREA)
- Microbiology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- Immunology (AREA)
- Biotechnology (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98941808A EP0965634A4 (en) | 1997-09-10 | 1998-09-10 | NEW PRIMER AND USE |
| US09/297,960 US6287771B1 (en) | 1997-09-10 | 1998-09-10 | Method for determining mastitis using keratin and casein which are amplified by primers |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9/262693 | 1997-09-10 | ||
| JP26269397 | 1997-09-10 | ||
| JP10/214831 | 1998-07-14 | ||
| JP10214831A JPH11146799A (ja) | 1997-09-10 | 1998-07-14 | 新規プライマー及びその利用 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999013065A1 true WO1999013065A1 (fr) | 1999-03-18 |
Family
ID=26520534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/004076 Ceased WO1999013065A1 (fr) | 1997-09-10 | 1998-09-10 | Nouvelle amorce et son utilisation |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6287771B1 (ja) |
| EP (1) | EP0965634A4 (ja) |
| JP (1) | JPH11146799A (ja) |
| WO (1) | WO1999013065A1 (ja) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040047215A (ko) * | 2002-11-29 | 2004-06-05 | 김갑수 | 소의 유선염 치료방법 및 치료제 |
| NZ552034A (en) * | 2004-05-13 | 2009-11-27 | Advanced Animal Diagnostics | Microfluidic device and leucocyte antigen mediated microfluidic assay |
| WO2007112332A2 (en) | 2006-03-24 | 2007-10-04 | Advanced Animal Diagnostics | Microfluidic chamber assembly for mastitis assay |
| CN112724229B (zh) * | 2019-10-28 | 2023-09-26 | 中国医学科学院药物研究所 | 一种角蛋白bd-4、制法和其药物组合物与用途 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0200362A2 (en) * | 1985-03-28 | 1986-11-05 | F. Hoffmann-La Roche Ag | Process for amplifying, detecting, and/or cloning nucleic acid sequences |
| WO1994028126A2 (en) * | 1993-05-20 | 1994-12-08 | University Of Warwick | Phenylalanine-free protein and dna coding therefor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5849488A (en) * | 1996-02-27 | 1998-12-15 | Oulutech Ltd. | DNA-sequence-based diagnosis of mastitis from a milk sample |
| JPH11127852A (ja) * | 1997-10-28 | 1999-05-18 | Snow Brand Milk Prod Co Ltd | 上皮細胞のg0期同調方法 |
-
1998
- 1998-07-14 JP JP10214831A patent/JPH11146799A/ja active Pending
- 1998-09-10 WO PCT/JP1998/004076 patent/WO1999013065A1/ja not_active Ceased
- 1998-09-10 US US09/297,960 patent/US6287771B1/en not_active Expired - Fee Related
- 1998-09-10 EP EP98941808A patent/EP0965634A4/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0200362A2 (en) * | 1985-03-28 | 1986-11-05 | F. Hoffmann-La Roche Ag | Process for amplifying, detecting, and/or cloning nucleic acid sequences |
| WO1994028126A2 (en) * | 1993-05-20 | 1994-12-08 | University Of Warwick | Phenylalanine-free protein and dna coding therefor |
Non-Patent Citations (5)
| Title |
|---|
| KOCZAN D., HOBOM G., SEYFERT H.-M.: "GENOMIC ORGANIZATION OF THE BOVINE ALPHA-S1 CASEIN GENE.", NUCLEIC ACIDS RESEARCH, INFORMATION RETRIEVAL LTD., GB, vol. 19., no. 20., 1 January 1991 (1991-01-01), GB, pages 5591 - 5596., XP002915050, ISSN: 0305-1048 * |
| LEROUX C., MAZURE N., MARTIN P.: "MUTATIONS AWAY FROM SPLICE SITE RECOGNITION SEQUENCES MIGHT CIS- MODULATE ALTERNATIVE SPLICING OF GOAT ALPHAS1-CASEIN TRANSCRIPTS.", JOURNAL OF BIOLOGICAL CHEMISTRY, AMERICAN SOCIETY FOR BIOCHEMISTRY AND MOLECULAR BIOLOGY, US, vol. 267., no. 09., 1 January 1992 (1992-01-01), US, pages 6147 - 6157., XP002915051, ISSN: 0021-9258 * |
| NOGUCHI S., ET AL.: "DETECTION OF BREAST CANCER MICROMETASTASES IN AXILLARY LYMPH NODES BY MEANS OF REVERSE TRANSCRIPTASE-POLYMERASE CHAIN REACTION.", AMERICAN JOURNAL OF PATHOLOGY., ELSEVIER INC., US, vol. 148., no. 02., 1 January 1996 (1996-01-01), US, pages 649 - 656., XP002915053, ISSN: 0002-9440 * |
| See also references of EP0965634A4 * |
| WANG A. M., DOYLE M. V., MARK D. F.: "QUANTITATION OF MRNA BY THE POLYMERASE CHAIN REACTION.", PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES, NATIONAL ACADEMY OF SCIENCES, US, vol. 86., 1 January 1989 (1989-01-01), US, pages 9717 - 9721., XP002915052, ISSN: 0027-8424, DOI: 10.1073/pnas.86.24.9717 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0965634A1 (en) | 1999-12-22 |
| US6287771B1 (en) | 2001-09-11 |
| JPH11146799A (ja) | 1999-06-02 |
| EP0965634A4 (en) | 2003-01-15 |
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