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Fluorescent quantitation PCR (polymerase chain reaction) detection kit for four conventional herpesvirus hominises

A detection kit and herpes virus technology, which is applied in the determination/inspection of microorganisms, microorganisms, biochemical equipment and methods, etc., and can solve problems such as difficult typing, low sensitivity, and long time required

Inactive Publication Date: 2014-05-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional herpes virus detection methods mainly include virus isolation and culture and serological detection. The former was once the "gold standard" for the diagnosis of herpes virus, but it takes a long time (3-30 days) and has low sensitivity (especially after antiviral drug treatment). ), typing difficulties and other defects; the latter is divided into direct antigen detection method and antibody indirect detection method. The direct antigen detection method has low sensitivity because some viruses do not produce detectable antigens, and the indirect antibody detection method is due to herpes virus It takes about 1 week after infection to produce an effective concentration of antibodies, making early diagnosis impossible, and there are cross-reactions between different herpes viruses, and the specificity of antibodies is not high

Method used

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  • Fluorescent quantitation PCR (polymerase chain reaction) detection kit for four conventional herpesvirus hominises
  • Fluorescent quantitation PCR (polymerase chain reaction) detection kit for four conventional herpesvirus hominises

Examples

Experimental program
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Effect test

Embodiment 1

[0034] see figure 1 , four common human herpesvirus fluorescent quantitative PCR detection kits provided by the present invention are composed of quantitative PCR reaction solution 1, quantitative reaction solution 2, HSV-1 standard product 3, HSV-2 standard product 4, EBV standard product 5, HCMV Standard product 6, negative control product 7, HSV-1 positive control product 8, HSV-2 positive control product 9, EBV positive control product 10, HCMV positive control product 11, instructions 12 and box body 13.

[0035] The quantitative PCR reaction solution contains PCR buffer, MgCl 2 , dNTPs, thermostable DNA polymerase, upstream amplification primer 1, downstream amplification primer 2, HSV-1 fluorescent probe and HSV-2 fluorescent probe;

[0036] Quantitative reaction solution contains PCR buffer, MgCl 2 , dNTPs, thermostable DNA polymerase, upstream amplification primer 1, downstream amplification primer 2, downstream amplification primer 3, EBV fluorescent probe and HCMV...

Embodiment 2

[0052] Example 2 Sensitivity and specificity tests of four common human herpesvirus fluorescent quantitative PCR detection kits

[0053] (1) Materials:

[0054] The selected pathogenic microorganisms include: experimental group: HSV-1 (strain F), HSV-2 (strain G), HCMV (AD169 strain) provided by the microbiology teaching and research group of Anhui Medical University, EBV (strain B95-8) provided by Beijing Institute of Virology ; Control group: Staphylococcus aureus, Escherichia coli, hepatitis B virus, Cryptococcus neoformans, Candida albicans, and human genomes were provided by the bacteria room, virus room and gene amplification room of Children's Hospital Affiliated to Zhejiang University.

[0055] (2) Design and synthesis of primers and probes:

[0056] Conduct bioinformatics analysis on the conserved region sequences of HSV-1, HSV-2, EBV, and HCMV, design and screen PCR amplification primers and specific fluorescent probes for each herpes virus, and entrust Shanghai...

Embodiment 3

[0068] Example 3 Application of four common human herpesvirus fluorescent quantitative PCR detection kits in clinical sample detection

[0069] (1) Clinical sample testing:

[0070] Four common human herpesvirus fluorescent quantitative PCR detection kits were used to detect the blood samples of 128 clinically suspected herpesvirus-infected children. The HSV-1, HSV-2, EBV, HCMV single nucleic acid detection kits approved by the bureau are used as controls for evaluating the performance indicators of the kits of the present invention.

[0071] (2) Test results:

[0072] The kit of the present invention detected 41 cases of positive samples, including 1 case of HSV-1, 1 case of HSV-2, 15 cases of EBV, 21 cases of HCMV, 1 case of mixed infection of HSV-2 / HCMV, and 2 cases of mixed infection of EBV / HCMV , the coincidence rate with the test results of the control kit was 100%.

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Abstract

The invention provides a real-time fluorescent quantitation PCR (polymerase chain reaction) kit for simultaneously detecting conventional herpesvirus hominises HSV (herpes simplex virus)-1, HSV-2, EBV and HCMV (human cytomegalovinis). The kit consists of quantitation PCR reaction liquid, quantitation reaction liquid, an HSV-1 standard substance, an HSV-2 standard substance, an EBV standard substance, an HCMV standard substance, a negative reference substance, an HSV-1 positive reference substance, an HSV-2 positive reference substance, an EBV positive reference substance, an HCMV positive reference substance, a specification and a kit body. The kit disclosed by the invention adopts a real-time fluorescent quantitation PCR technology and two specific fluorescent probes in the same reaction system; the detection range covers the four most conventional herpesvirus hominises, so that the four herpesvirus hominises in a sample can be simultaneously subjected to parting detection; real-time and accurate quantitation can be realized; the need for early, quick and accurate diagnosis can be met; a powerful basis is supplied to epidemiological investigation and immediate formulation of a targeted treating scheme.

Description

technical field [0001] The invention belongs to the field of biological technology, and relates to a fluorescent quantitative PCR detection kit, in particular to a real-time fluorescent quantitative PCR detection of herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 in samples such as blood, urine, and cerebrospinal fluid of patients (HSV-2), Epstein-Marr virus (EBV), and human cytomegalovirus (HCMV) are novel kits for four common human herpesviruses. Background technique [0002] Herpesviridae is a group of medium-sized, enveloped DNA viruses, more than 100 species have been discovered. Herpesviruses known to be associated with human disease include herpes simplex virus types 1 and 2 (HSV-1, HSV-2), varicella-zoster virus (VZV), Epstein-Marr virus (EBV), human giant Cytovirus (HCMV), human herpesvirus types 6, 7 and 8 (HHV-6, HHV-7, HHV-8), the first four viruses are the most common clinically. When the body's immune function is low or suppressed, it is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/70C12Q1/68C12R1/93
CPCC12Q1/686C12Q1/70C12Q2531/113C12Q2561/113C12Q2563/107
Inventor 舒强尚世强杜立中陶然李伟
Owner ZHEJIANG UNIV
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