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Nucleic acid combined testing kit of respiratory tract infection pathogens

A combined detection and respiratory technology, applied in the fields of biomedicine and clinical diagnosis, can solve the problems of high detection cost, easy missed diagnosis of early disease diagnosis, low sensitivity and specificity of immunological methods, etc.

Inactive Publication Date: 2020-07-07
GUANGZHOU HYBRIBIO MEDICINE TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the clinical detection of respiratory tract infection, single detection of a pathogen of respiratory tract infection is time-consuming, laborious and costly.
At present, multiple detection is mainly based on the antigen or antibody detection of immunological methods, but the sensitivity and specificity of immunological methods are low, and there is a window period in antibody detection, which is easy to miss in the early diagnosis of diseases

Method used

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  • Nucleic acid combined testing kit of respiratory tract infection pathogens
  • Nucleic acid combined testing kit of respiratory tract infection pathogens
  • Nucleic acid combined testing kit of respiratory tract infection pathogens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Example 1 Combined Detection of Respiratory Tract Infection Pathogen Nucleic Acid

[0064] 1. Experimental method

[0065] (1) Design and screening of primers and probes

[0066] Multiplex PCR experiments are not simply mixing multiple pairs of specific primers into one reaction system. The reason why multiplex PCR is difficult is that the amplification conditions between multiple targets are incompatible, and each target needs to be matched with other primers next to it. The multiple pairs of primers that are required to be added in multiplex PCR experiments can neither combine with each other, nor can they combine with regions other than the target fragment on the template DNA. There should be no greater complementarity between each primer and other amplified fragments, and no greater homology between the amplified fragments; the length of each primer is generally 18 to 24 bases, and the primers cannot be complementary, especially avoid 3' Complementary ends. Long...

Embodiment 2

[0109] Example 2 Construction of Respiratory Tract Infection Pathogen Nucleic Acid Combined Detection Kit

[0110] 1. Composition of nucleic acid joint detection kit for pathogens of respiratory tract infection

[0111] The present invention constructs a novel coronavirus (2019-nCoV), influenza A virus (FluA), influenza B virus (FluB), respiratory syncytial virus ( RSV), human parainfluenza virus (PIV1 / 2 / 3), adenovirus (AdV), Mycoplasma pneumoniae (MP) and Chlamydia pneumoniae (CP) nucleic acid combined detection kit, including primer and probe combinations, PCR buffer, enzyme Mixed solution, blank control and positive control, the specific components are as follows:

[0112] (1) Primer and probe combination

[0113] By analyzing clinical sample data and gene sequence query analysis, the inventor obtained SEQ ID NO: 1, which has a nucleotide sequence complementary only to the 2019-nCoV ORF1ab target gene, as shown in Tables 7-8. The primer of ~2 and the probe of SEQ ID NO: ...

Embodiment 3

[0134] Example 3 Detection of actual samples by the nucleic acid joint detection kit for respiratory tract infection pathogens

[0135] 1. Experimental method

[0136] In order to verify that the respiratory infection pathogen nucleic acid joint detection kit constructed in Example 2 of the present invention is aimed at novel coronavirus (2019-nCoV), influenza A virus (FluA), influenza B virus (FluB), respiratory syncytial virus (RSV ), human parainfluenza virus (PIV1 / 2 / 3), adenovirus (AdV), Mycoplasma pneumoniae (MP) and Chlamydia pneumoniae (CP) detection accuracy, specificity and sensitivity, with influenza A virus (FluA) Quality Control, Influenza B Virus (FluB) Quality Control, Respiratory Syncytial Virus (RSV) Quality Control, Human Parainfluenza Virus (PIV1 / 2 / 3) Quality Control, Adenovirus (AdV) Quality Control, Mycoplasma pneumoniae (MP) quality control, Chlamydia pneumoniae (CP) quality control (dilute different concentrations: 1×10 5 copies / mL, 1×10 4 copies / mL, 1...

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Abstract

The invention discloses a nucleic acid combined testing kit of respiratory tract infection pathogens. The invention develops a set of primer-probe combinations which can detect multiple types of respiratory tract infection pathogens such as novel coronavirus, influenza virus a, influenza virus b, respiratory syncytial virus, human parainfluenza virus, adenovirus, mycoplasma pneumonia and chlamydiapneumonia through combination of a multiple fluorescence quantitative PCR technology and a flow-through hybridization and gene chip technology, wherein nucleotide sequences thereof are shown by SEQ ID NO:1-36 respectively. The nucleic acid combined testing kit of the respiratory tract infection pathogens is established. The kid can realize synchronous combined testing of the 8 respiratory tract infection pathogens, is high in detection accuracy, specificity and sensitivity, good in repeatability, low in false negativity and false positivity, short in detection time and low in cost, can realize comprehensive detection of a patient, can locate a disease source accurately, can realize treatment in time or make corresponding quarantine measures and is of important significance to effective control of respiratory tract infection and subsequent prevention of outbreak of relevant contagion and infection.

Description

technical field [0001] The invention belongs to the technical field of biomedicine and clinical diagnosis. More specifically, it relates to a nucleic acid combined detection kit for respiratory infection pathogens. Background technique [0002] Respiratory tract infection (RTI) is the most common type of human disease, which can occur in any gender, age and region, and is one of the leading causes of morbidity and death worldwide. The clinical symptoms and signs caused by respiratory tract infection are relatively similar, and its clinical manifestations are mainly rhinitis, pharyngitis, laryngitis, tonsillitis and other symptoms, and severe cases can cause tracheitis, bronchitis and pneumonia, etc. The treatment methods, efficacy and course of the disease also vary. It has been proven that most respiratory diseases are caused by pathogens other than bacteria, among which respiratory viruses are the most common. [0003] Common respiratory viruses include influenza virus,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/70C12Q1/689C12Q1/686C12Q1/6837C12Q1/04C12N15/11C12R1/35C12R1/01
CPCC12Q1/6837C12Q1/689C12Q1/701C12Q2600/16C12Q2600/166C12Q2531/113C12Q2537/143C12Q2563/107C12Q2547/101C12Q2545/101C12Q2545/113C12Q2521/531C12Q2565/501Y02A50/30
Inventor 郑江花朱娟娟李烈军谢龙旭
Owner GUANGZHOU HYBRIBIO MEDICINE TECH LTD
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