WO2012005238A1 - ヒトサイトメガロウイルス感染の検出方法 - Google Patents
ヒトサイトメガロウイルス感染の検出方法 Download PDFInfo
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- WO2012005238A1 WO2012005238A1 PCT/JP2011/065343 JP2011065343W WO2012005238A1 WO 2012005238 A1 WO2012005238 A1 WO 2012005238A1 JP 2011065343 W JP2011065343 W JP 2011065343W WO 2012005238 A1 WO2012005238 A1 WO 2012005238A1
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- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
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- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
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- C07K14/005—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from viruses
- C07K14/01—DNA viruses
- C07K14/03—Herpetoviridae, e.g. pseudorabies virus
- C07K14/04—Varicella-zoster virus
- C07K14/045—Cytomegalovirus
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- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
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- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
- G01N33/56983—Viruses
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- C12N2710/00011—Details
- C12N2710/16011—Herpesviridae
- C12N2710/16111—Cytomegalovirus, e.g. human herpesvirus 5
- C12N2710/16122—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
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- G01N2333/01—DNA viruses
- G01N2333/03—Herpetoviridae, e.g. pseudorabies virus
- G01N2333/04—Varicella-zoster virus
- G01N2333/045—Cytomegalovirus
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2469/00—Immunoassays for the detection of microorganisms
- G01N2469/20—Detection of antibodies in sample from host which are directed against antigens from microorganisms
Definitions
- the present invention relates to a method for detecting human cytomegalovirus infection.
- viral antigens are used for serological diagnosis of infectious diseases caused by human cytomegalovirus (HCMV).
- HCMV cytomegalovirus
- native antigen the lot difference caused by the preparation method cannot be ignored.
- virus itself since the virus itself is handled, there is a problem in safety and simplicity.
- Recombinant antigens are desired to achieve standardization of HCMV serological diagnosis, but it is known that the sensitivity and specificity of the test is not sufficient when only recombinant antigens are used. . This is because it is difficult to select an appropriate antigen to be recombined from a large number of viral antigens. In addition, it is considered that a partial expression fragment of each antigen protein is used.
- pp150 which is known as a major antigen, is a protein having a molecular weight of about 150 kDa, so that mass synthesis using E. coli is impossible, and it is difficult to use the full-length protein for testing. Therefore, in a commercially available test kit, a pp150 fragment (typically about 30 to 40 residues) is appropriately mixed with other HCMV protein fragments and used as an antigen. However, it has been reported that the sensitivity of the test is insufficient at about 60% with only the partial expression fragment.
- Non-Patent Document 1 shows the results of examining antibody reactivity of HCMV-positive patient serogroups against HCMV native antigen (including viral proteins in full length) and evaluating antibody reactivity for each protein.
- pp150 has achieved detection sensitivity close to 100%, and the detection sensitivity is very low, about 50% or less, depending on the type of protein.
- An object of the present invention is to provide a novel and highly practical means capable of detecting HCMV infection with high sensitivity.
- pp28 full-length protein synthesized full-length proteins for 15 types of HCMV proteins, and as a result of intensive research on reactivity with sera of HCMV-infected patients, all infected patients were detected without omission when pp28 full-length protein was used as an antigen. It was found that pp28 full-length protein can be synthesized and purified in large quantities as a recombinant protein using Escherichia coli, and found to be commercially available as an antigen for HCMV testing, and the present invention has been completed.
- the present invention is an artificial polypeptide comprising an amino acid sequence having 90% or more identity with the amino acid sequence shown in SEQ ID NO: 2, which is derived in vivo against pp28 produced by human cytomegalovirus.
- a method for detecting human cytomegalovirus infection is provided.
- the present invention also relates to an artificial polypeptide comprising an amino acid sequence having 90% or more identity with the amino acid sequence shown in SEQ ID NO: 2, which is derived in vivo against pp28 produced by human cytomegalovirus.
- a reagent for detecting human cytomegalovirus infection which comprises an artificial polypeptide having a reactivity that binds to an antibody produced by an antigen-antibody reaction. Furthermore, the present invention provides a human cytomegalovirus infection detection kit comprising the detection reagent of the present invention.
- the present invention provides a means for detecting HCMV infection with extremely excellent detection sensitivity. According to the present invention, all HCMV-infected patients can be reliably detected without omission by a simple immunoassay.
- a known antibody test method there is a method using a pp28 fragment as an antigen.
- Non-Patent Document 1 also describes a method for detecting anti-HCMV antibody in serum using pp28 as a fragment having a size of about 30 residues. Has been.
- false negative occurs in more than 10% of patients with the pp28 fragment. The occurrence of false negatives is a serious problem in clinical laboratory testing because it can overlook infected patients. According to the method of the present invention, it becomes possible to reliably detect an infected patient without overlooking it, which can greatly contribute to a clinical examination.
- Pp28 is a 28 kDa phosphoprotein, one of the structural proteins of HCMV, and is sometimes called UL99 because it is encoded by the UL99 gene.
- the amino acid sequence shown in SEQ ID NO: 2 is the pp28 amino acid sequence of HCMV AD169 strain, and is registered in GenBank with an accession number such as X17403 (complete genome).
- GenBank accession number such as X17403 (complete genome).
- the nucleotide sequence of the viral DNA encoding the amino acid sequence of SEQ ID NO: 2 is shown in SEQ ID NO: 1.
- artificial pp28 consisting of the amino acid sequence shown in SEQ ID NO: 2 is used as an antigen.
- a small number of amino acid residues in the amino acid sequence of SEQ ID NO: 2 are substituted, deleted, inserted and / or added, and are derived in vivo with respect to pp28 produced by HCMV.
- an antigen an artificial polypeptide having reactivity that binds to an antibody by an antigen-antibody reaction is used.
- the latter polypeptide has an identity with SEQ ID NO: 2 of 90% or more, preferably 95% or more, more preferably 98% or more.
- the latter polypeptide is also preferably composed of an amino acid sequence in which one or several amino acid residues are substituted, deleted, inserted and / or added in the amino acid sequence of SEQ ID NO: 2.
- a polypeptide consisting of an arbitrary amino acid sequence has a reactivity of binding to an antibody induced in vivo with pp28 produced by HCMV by an antigen-antibody reaction is isolated from, for example, a known HCMV-infected patient. This can be easily confirmed by reacting a sample such as serum with the polypeptide. If the binding between the antibody present in serum and the polypeptide can be confirmed, it can be determined that the polypeptide has the above-described reactivity.
- identity of amino acid sequences means that both amino acid sequences are aligned so that the amino acid residues of the two amino acid sequences to be compared match as much as possible, and the number of matched amino acid residues is the total number of amino acid residues. The percentage divided by is expressed as a percentage.
- a gap is appropriately inserted in one or both of the two sequences to be compared as necessary. Such sequence alignment can be easily performed using a known program such as BLAST, FASTA, CLUSTAL W, and the like. When gaps are inserted, the total number of amino acid residues is the number of residues obtained by counting one gap as one amino acid residue.
- the homology is the total number of amino acid residues in the longer sequence, and the number of amino acid residues matched. Is calculated by dividing.
- the 20 amino acids constituting the natural protein are neutral amino acids having low side chains (Gly, Ile, Val, Leu, Ala, Met, Pro), and neutral amino acids having hydrophilic side chains (Asn , Gln, Thr, Ser, Tyr, Cys), acidic amino acids (Asp, Glu), basic amino acids (Arg, Lys, His), aromatic amino acids (Phe, Tyr, Trp) It is known that the properties of a polypeptide often do not change if substitution is made between these groups.
- polypeptide comprising an amino acid sequence thus substituted is a preferred example of a polypeptide comprising an amino acid sequence different from SEQ ID NO: 2 among the polypeptides used as antigens in the present invention.
- an "artificial polypeptide” is a polypeptide that has been artificially produced by chemical synthesis, genetic engineering techniques, or other methods, and the protein expressed and produced from the HCMV genome in cells infected with HCMV was recovered. Things are not included.
- the amino acid sequence of pp28 and the base sequence that encodes it are registered in the database as described above and are known, and are also described in the sequence listing of the present application.
- the codons encoding each amino acid are known, the base sequence of a polynucleotide encoding a specific amino acid sequence can be easily specified. Therefore, even a polypeptide consisting of an amino acid sequence different from SEQ ID NO: 2 can easily identify the base sequence of the polynucleotide encoding it.
- the polypeptide used as an antigen in the present invention can be produced by any method based on the sequence information.
- the chemical synthesis method examples include Fmoc method (fluorenylmethyloxycarbonyl method), tBoc method (t-butyloxycarbonyl method) and the like. Moreover, it can also synthesize
- polypeptides by genetic engineering techniques are also well known. Briefly, a polynucleotide encoding the polypeptide is prepared, the polynucleotide is incorporated into an appropriate expression vector, and an appropriate expression system is used.
- the target antigen polypeptide can be obtained as a recombinant polypeptide by expressing it and recovering and purifying it. Since the polypeptide used as an antigen in the present invention has a size of a hundred or more residues, a recombinant polypeptide is produced using host cells such as Escherichia coli by genetic engineering techniques in order to synthesize a large amount at a low cost. It is preferable.
- the recombinant polypeptide can be modified by various post-translational modifications (elimination of N-terminal methionine, N-terminal acetylation, glycosylation, limited degradation by intracellular protease, myristoylation, isoprenylation, As long as such a post-translationally modified form of the polypeptide is also reactive with the antibody induced in vivo against pp28 produced by HCMV, the method of the present invention It can be used as an antigen.
- the polynucleotide encoding the polypeptide is, for example, HCMV having pp28 consisting of the amino acid sequence of SEQ ID NO: 2. It can be prepared by infecting a suitable host cell (such as AD169 strain), extracting viral DNA from the infected cell, and synthesizing DNA by PCR. Primers used in PCR can be easily designed and prepared by those skilled in the art based on the base sequence shown in SEQ ID NO: 1, for example, primers comprising the base sequences shown in SEQ ID NOs: 3 and 4 used in the examples. Can be used.
- a polynucleotide encoding a polypeptide consisting of an amino acid sequence different from SEQ ID NO: 2 can be prepared.
- a polynucleotide encoding a polypeptide having a desired amino acid sequence can be obtained using a commercially available nucleic acid synthesizer or appropriately introducing mutations into DNA prepared as described above by a conventional method.
- a desired polypeptide can be obtained by incorporating the prepared polynucleotide into an appropriate vector, expressing it in an appropriate expression system, and collecting and purifying it.
- vectors used and various expression systems are also well known.
- Various vectors, host cells, reagents, kits Can be appropriately selected and used by those skilled in the art.
- HCMV strains are also commercially available, and can be obtained separately from infected patients, so that they are easily available. Methods such as viral DNA extraction, PCR, DNA integration into a vector, introduction of a vector into a host cell, and recovery / purification of an expressed polypeptide are well-known conventional methods.
- the recombinant polypeptide consisting of the amino acid sequence shown in SEQ ID NO: 2 can be expressed using an E. coli expression system, and the expressed polypeptide is, for example, pp28 Can be easily purified using an antibody column on which a monoclonal antibody that specifically binds to the antibody is immobilized.
- the recombinant polypeptide thus obtained is used as an antigen for immunoassay, all HCMV-infected patients can be detected without omission.
- the preparation method of a monoclonal antibody is a well-known normal method, and if it is an expert, it can produce it easily.
- an animal is immunized with an inactivated virus, antibody-producing cells such as spleen cells are collected from the animal, and this is fused with myeloma cells to produce a hybridoma.
- a monoclonal antibody that specifically binds to pp28 can be recovered from the culture supernatant by selecting and growing a hybridoma that produces an antibody having the binding ability.
- Immunoassays themselves are well known in this field.
- the immunoassay can be classified by reaction mode, such as sandwich method, competition method, aggregation method, immunochromatography method, Western blot method, etc. If classified by label, radioimmunoassay, fluorescent immunoassay, enzyme immunoassay (EIA), biotin immunity There are measurements.
- various methods of antibody testing using antigens are known. Specific examples include, but are not limited to, EIA (ELISA, CLEIA (chemiluminescence enzyme immunoassay), Western blot, etc.), aggregation Method (latex aggregation method, etc.), complement binding reaction (CF) and the like.
- EIA ELISA, CLEIA (chemiluminescence enzyme immunoassay), Western blot, etc.
- aggregation Method latex aggregation method, etc.
- complement binding reaction CF
- any known immunoassay method may be used.
- the term “measurement” includes detection
- the artificial polypeptide antigen described above is used in the form of an arbitrary amino acid sequence added to one or both ends (as a polypeptide comprising an amino acid sequence containing such an additional sequence). can do.
- a polypeptide comprising an amino acid sequence containing such an additional sequence can do.
- the anti-pp28 antibody in the sample can be immunoassayed.
- the artificial polypeptide is used in such a form, it is a part of the artificial polypeptide that functions as the antigen of the anti-pp28 antibody in the fusion protein. Is used as an antigen.
- the artificial polypeptide antigen is used in a form in which an arbitrary amino acid sequence is added to one end or both ends is also included in the method of the present invention.
- the amino acid sequence added to the artificial polypeptide may constitute any functional protein or a functional fragment thereof, or may be a sequence having no physiological activity such as a linker.
- a tag sequence such as GST or His may be added in the production process, but it can be used as an antigen even if such a tag sequence remains added.
- the artificial polypeptide antigen is immobilized on a plate or particle, respectively, and this is reacted with the sample to capture the anti-pp28 antibody in the sample on the solid phase. Then, it is reacted with enzyme-labeled anti-IgG antibody and / or anti-IgM antibody, and after washing, a substrate substance is added. Based on the amount of enzyme reaction, the anti-pp28 antibody captured on the solid phase can be measured.
- the artificial polypeptide antigen is transferred to a membrane after electrophoresis, and this membrane is reacted with a sample, and then reacted with an enzyme-labeled anti-IgG antibody and / or anti-IgM antibody in the same manner as described above. You can do it.
- the artificial polypeptide antigen is immobilized on latex particles or the like, reacted with a sample, and the amount of aggregation of the particles may be measured by absorbance or the like.
- the antibodies induced against HCMV in vivo are mainly IgG and IgM.
- IgM In the case of primary infection, IgM first rises, reaches a peak several days after infection, decreases thereafter, and IgG begins to rise about one week after infection and continues for a long period after that. Therefore, in the case of a technique capable of detecting anti-pp28 antibody in a sample by dividing it into IgG and IgM (for example, the above ELISA or Western blot), the anti-pp28 antibody supplemented with an antigen is used from the viewpoint of reliably detecting HCMV infection. It is preferable to use both an anti-IgG antibody and an anti-IgM antibody for detection.
- the sample to which the method of the present invention is applied is a sample separated from a subject, preferably a blood sample (whole blood, plasma, serum, etc.).
- an HCMV antigen protein other than the artificial polypeptide or a fragment thereof may be used at the same time.
- all antigens may be mixed and immobilized on a plate, or may be immobilized in separate wells and reacted with a sample.
- all the antigens may be mixed and solid-phased into particles, which may be reacted with the sample.
- all antigens may be mixed and electrophoresed, then transferred to a membrane, and reacted with a sample.
- the mixed antigen may be immobilized on the particles, or the particles each having the antigen immobilized thereon may be mixed, and the particles may be reacted with the sample.
- the above-mentioned artificial polypeptide can be provided as a detection reagent for HCMV infection.
- the reagent may contain only the above-described polypeptide, or may further contain one or more types of antigen proteins other than pp28 or fragments thereof. Further, it may further contain other components useful for stabilizing these polypeptides.
- the antigen polypeptide can also be provided in a form immobilized on a solid phase such as a plate or particle.
- the detection reagent can be provided as an HCMV infection detection kit in combination with other reagents as appropriate.
- Other reagents necessary for immunoassays are well known.
- the detection kit of the present invention includes, in addition to the detection reagent described above, a buffer that can be used as a sample diluent or washing solution, a labeled anti-immunoglobulin antibody for detecting an antibody bound to an antigen polypeptide, and the like. obtain.
- HCMV proteins For 15 types of HCMV proteins (Table 1 below), full-length proteins were synthesized by a wheat germ cell-free expression system. For synthesis, Cellfree Science Protemist DT was used. The insert DNA to be inserted into the vector is obtained by infecting MRC-5 cells with HCMV AD169 strain (purchased from RIKEN BioResource Center), extracting viral DNA from the infected cells, and PCR using a commercially available kit to extract each full-length protein. The encoding DNA was obtained by amplification. Each DNA was cloned into a plasmid vector containing the SP6 promoter, and the resulting plasmid DNA was used for a transcription reaction at 37 ° C. for 6 hours and translation at 15 ° C.
- pp28 DNA DNA 25 ⁇ g.
- primers consisting of the nucleotide sequences shown in SEQ ID NOs: 3 and 4 (including BamHI recognition sequence and NotI recognition sequence, respectively) were used, and Pfu Ultra DNA plymerase (Agilent Technologies) was used. PCR was performed under the reaction conditions of 95 ° C for 2 minutes, 30 cycles of 95 ° C for 20 seconds-55 ° C for 20 seconds-72 ° C for 1 minute, and finally 72 ° C for 3 minutes.
- Pp28 that could be expressed in E. coli was purified using an antibody column.
- a mouse was immunized with the inactivated virus to prepare a pp28 antigen-specific monoclonal antibody by a conventional method, and this antibody was immobilized on a CNBr-Activated Sepharose 4B column (GE Healthcare) to obtain an antibody column for purification.
- the pp28 protein could be purified by only one column treatment without contamination of E. coli-derived protein (FIG. 1). This recombinant pp28 protein was able to detect 100% of HCMV-infected patients.
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Abstract
Description
HCMVタンパク質のうち15種類(下記表1)のタンパク質について、小麦胚芽無細胞発現系により全長タンパク質を合成した。合成にはセルフリーサイエンス社のProtemist DTを使用した。ベクターに挿入するインサートDNAは、HCMV AD169株(理研バイオリソースセンターより購入)をMRC-5細胞に感染させ、この感染細胞からウイルスDNAを抽出し、市販のキットを用いたPCRにより、各全長タンパク質をコードするDNAを増幅して得た。SP6プロモーターを含むプラスミドベクターに各DNAをクローニングし、得られたプラスミドDNAを用いて、5mLの反応系(プラスミドDNA 25μg)にて37℃、6時間の転写反応及び15℃、20時間の翻訳を行ない、それぞれの全長タンパク質を合成した。なお、pp28のDNAの増幅には、配列番号3及び4に示す塩基配列から成るプライマー(それぞれ、BamHI認識配列及びNotI認識配列を含む)を使用し、Pfu Ultra DNA plymerase(Agilent Technologies社)を用いて95℃2分間の変性処理、95℃20秒-55℃20秒-72℃1分を30サイクル、最後に72℃3分間の反応条件でPCRを行なった。
上記で合成した各全長タンパク質について、ウエスタンブロット法によりHCMV感染患者血清100例との反応性を調べた。各全長タンパク質を電気泳動してメンブレンに転写し、メンブレンをHCMV感染患者血清100例と反応させた後、anti-Human IgG + IgMにて検出した。その結果、下記表2に示す通り、pp150, pp28, gp130の3種類が100%の反応性を示した。
組換えタンパク質の大量生産のためには大腸菌発現系を利用することが望ましい。そこで、100%の反応性を示した3種類の抗原について、常法の大腸菌発現系を用いて全長タンパク質の作製を検討した。上記で調製した各抗原タンパク質をコードするcDNAを大腸菌用の発現ベクターに組み込み、大腸菌に導入して発現させた。その結果、pp28の発現を確認することができた。一方、pp150, gp130(膜タンパク質)は大腸菌で発現不可能であった。
Claims (6)
- 配列番号2に示されるアミノ酸配列と90%以上の同一性を有するアミノ酸配列から成る人工のポリペプチドであって、ヒトサイトメガロウイルスが産生するpp28に対して生体内で誘導された抗体と抗原抗体反応により結合する反応性を有する人工のポリペプチドを抗原として用いた免疫測定により、被検者から分離された試料中に含まれ得る、pp28に対する抗体を測定することを含む、ヒトサイトメガロウイルス感染の検出方法。
- 前記人工のポリペプチドは、配列番号2に示されるアミノ酸配列又は該アミノ酸配列において1個若しくは数個のアミノ酸が置換され、欠失され、挿入され及び/若しくは付加されたアミノ酸配列から成る請求項1記載の方法。
- 前記人工のポリペプチドは、配列番号2に示されるアミノ酸配列から成る請求項2記載の方法。
- 前記人工のポリペプチドは、遺伝子工学的手法により作製された組換えポリペプチドである請求項1ないし3のいずれか1項に記載の方法。
- 配列番号2に示されるアミノ酸配列と90%以上の同一性を有するアミノ酸配列から成る人工のポリペプチドであって、ヒトサイトメガロウイルスが産生するpp28に対して生体内で誘導された抗体と抗原抗体反応により結合する反応性を有する人工のポリペプチドを含む、ヒトサイトメガロウイルス感染の検出試薬。
- 請求項5に記載の検出試薬を含む、ヒトサイトメガロウイルス感染の検出キット。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11803572.4A EP2592419A4 (en) | 2010-07-07 | 2011-07-05 | METHOD FOR DETECTION OF INFECTION BY HUMAN CYTOMEGALOVIRUS |
KR1020137003135A KR20130088845A (ko) | 2010-07-07 | 2011-07-05 | 인간 사이토메갈로 바이러스 감염의 검출 방법 |
CN2011800337382A CN103003694A (zh) | 2010-07-07 | 2011-07-05 | 人巨细胞病毒感染的检测方法 |
US13/808,465 US20130109010A1 (en) | 2010-07-07 | 2011-07-05 | Method for detection of infection with human cytomegalovirus |
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JP2010154937A JP5712513B2 (ja) | 2010-07-07 | 2010-07-07 | ヒトサイトメガロウイルス感染の検出方法 |
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US (1) | US20130109010A1 (ja) |
EP (1) | EP2592419A4 (ja) |
JP (1) | JP5712513B2 (ja) |
KR (1) | KR20130088845A (ja) |
CN (1) | CN103003694A (ja) |
WO (1) | WO2012005238A1 (ja) |
Cited By (1)
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CN105510581A (zh) * | 2015-12-11 | 2016-04-20 | 郑州安图生物工程股份有限公司 | 巨细胞病毒IgG抗体亲和力检测试剂盒 |
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EP3258265B1 (en) | 2015-02-09 | 2022-04-13 | Xiamen University | Method for assessing risk of human cytomegalovirus active infection in body and related kit |
KR102281998B1 (ko) * | 2017-08-30 | 2021-07-27 | 삼성전자 주식회사 | 이종재질 통신장치 함체 |
CN112694520B (zh) * | 2020-12-02 | 2023-01-17 | 图凌(杭州)生物医药有限公司 | 一种人工多肽hm、其抗体及在病理检测中的应用 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000514300A (ja) * | 1996-07-12 | 2000-10-31 | アクゾ・ノベル・エヌ・ベー | ヒトサイトメガロウイルス(cmv)を検出するためのペプチド試薬 |
JP2008263983A (ja) * | 2007-04-20 | 2008-11-06 | F Hoffmann La Roche Ag | 病原体の一次感染の検出 |
JP2010517544A (ja) * | 2007-02-07 | 2010-05-27 | シグマ−タウ・インドゥストリエ・ファルマチェウチケ・リウニテ・ソシエタ・ペル・アチオニ | ヒトサイトメガロウイルス(hcmv)の組換え抗原 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3619902A1 (de) * | 1986-06-13 | 1988-03-03 | Biotechnolog Forschung Gmbh | Cmv-dna-strukturen, expressionsvektor dafuer, cmv-proteinstrukturen und deren verwendung |
US6733989B1 (en) * | 1988-02-24 | 2004-05-11 | Dade Behring Marburg Gmbh | Structural phosphoprotein (pp28) of human cytomegalovirus (HCMV), the preparation and use thereof |
EP0702083A3 (de) * | 1994-07-26 | 1997-01-15 | Biotest Ag | Polypeptide und Fusionsproteine bestehend aus dem UL 57 Leserahmen bzw. dem C-terminalen Bereich des Tegumentproteins pp150 aus HCMV, entsprechende Oligonucleotide und Nachweis reagentien |
US5945276A (en) * | 1996-04-10 | 1999-08-31 | Signal Pharmaceuticals, Inc. | Reporter cell line system for detecting cytomegalovirus and identifying modulators of viral gene expression |
AUPR593101A0 (en) * | 2001-06-26 | 2001-07-19 | Council Of The Queensland Institute Of Medical Research, The | Cytomegalovirus t cell epitopes |
ITRM20030386A1 (it) * | 2003-08-05 | 2005-02-06 | Istituto Naz Per Le Malattie Infettive Lazz | Metodo e test diagnostici basati sull'analisi citofluorimetrica dei linfociti t antigene-specifici. |
WO2006056027A1 (en) * | 2004-11-29 | 2006-06-01 | The Council Of The Queensland Institute Of Medical Research | Human cytomegalovirus immunotherapy |
CN1307423C (zh) * | 2005-01-08 | 2007-03-28 | 王明丽 | 重组抗原pp65包被酶标反应板的制法及ELISA检测试剂盒 |
JP2006223180A (ja) * | 2005-02-17 | 2006-08-31 | Hokkaido Univ | マルチプレックスpcrを用いたヘルペスウイルス遺伝子検出法 |
CA2682700A1 (en) * | 2007-05-11 | 2008-11-20 | Vakzine Projekt Management Gmbh | Composition containing hcmv particles |
-
2010
- 2010-07-07 JP JP2010154937A patent/JP5712513B2/ja not_active Expired - Fee Related
-
2011
- 2011-07-05 US US13/808,465 patent/US20130109010A1/en not_active Abandoned
- 2011-07-05 CN CN2011800337382A patent/CN103003694A/zh active Pending
- 2011-07-05 EP EP11803572.4A patent/EP2592419A4/en not_active Withdrawn
- 2011-07-05 WO PCT/JP2011/065343 patent/WO2012005238A1/ja active Application Filing
- 2011-07-05 KR KR1020137003135A patent/KR20130088845A/ko not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000514300A (ja) * | 1996-07-12 | 2000-10-31 | アクゾ・ノベル・エヌ・ベー | ヒトサイトメガロウイルス(cmv)を検出するためのペプチド試薬 |
JP2010517544A (ja) * | 2007-02-07 | 2010-05-27 | シグマ−タウ・インドゥストリエ・ファルマチェウチケ・リウニテ・ソシエタ・ペル・アチオニ | ヒトサイトメガロウイルス(hcmv)の組換え抗原 |
JP2008263983A (ja) * | 2007-04-20 | 2008-11-06 | F Hoffmann La Roche Ag | 病原体の一次感染の検出 |
Non-Patent Citations (5)
Title |
---|
GREIJER A.E. ET AL.: "Molecular Fine- Specificity Analysis of Antibody Responses to Human Cytomegalovirus and Design of Novel Synthetic-Peptide-Based Serodiagnostic Assay", JOURNAL OF CLINICAL MICROBIOLOGY, vol. 37, no. 1, 1999, pages 179 - 188, XP002257029 * |
JOURNAL OF CLINICAL MICROBIOLOGY, vol. 37, no. 1, 1999, pages 179 - 188 |
KAORU WADA ET AL.: "Recombinant Tanpakushitsu (pp150,gp58) ni yoru CMV Kotai no Kenshutsu", PROCEEDINGS OF THE JAPANESE SOCIETY FOR IMMUNOLOGY, vol. 24, 25 October 1994 (1994-10-25), pages 624, XP008168634 * |
MEYER H. ET AL.: "Identification and Procaryotic Expression of the Gene Coding for the Highly Immunogenic 28-Kilodalton Structural Phosphoprotein(pp28) of Human Cytomegalovirus", J. VIROL., vol. 62, no. 7, July 1988 (1988-07-01), pages 2243 - 2250, XP000106691 * |
See also references of EP2592419A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105510581A (zh) * | 2015-12-11 | 2016-04-20 | 郑州安图生物工程股份有限公司 | 巨细胞病毒IgG抗体亲和力检测试剂盒 |
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JP2012018051A (ja) | 2012-01-26 |
US20130109010A1 (en) | 2013-05-02 |
KR20130088845A (ko) | 2013-08-08 |
JP5712513B2 (ja) | 2015-05-07 |
EP2592419A1 (en) | 2013-05-15 |
EP2592419A4 (en) | 2014-03-05 |
CN103003694A (zh) | 2013-03-27 |
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