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Hand-foot-and-mouth disease pathogen detection primer group and kit

A technology for pathogen detection and hand, foot and mouth disease, applied in microorganisms, recombinant DNA technology, microorganism-based methods, etc., can solve problems such as being unsuitable for on-site sampling and detection, and difficult to control the epidemic situation, so as to improve sensitivity and safety, reduce Contamination opportunity, effect of reducing reaction volume

Active Publication Date: 2016-06-22
INST OF PLA FOR DISEASE CONTROL & PREVENTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The World Health Organization has formulated and released the "Guidelines for Clinical Management and Public Health Response to Hand, Foot, and Mouth Disease (HFMD)". Due to the wide infectivity of Hand, Foot, and Mouth Disease, the epidemic is difficult to control, and most susceptible people are children under 10 years old. Hand, Foot, and Mouth Disease On-site detection becomes particularly important. There are hand, foot and mouth disease kits based on loop-mediated isothermal amplification technology available on the market, but such products require a strict laboratory environment and are not suitable for on-site sampling and detection.

Method used

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  • Hand-foot-and-mouth disease pathogen detection primer group and kit
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  • Hand-foot-and-mouth disease pathogen detection primer group and kit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1 kit detects the specificity of primer

[0050] The microfluidic chip of the kit includes a substrate and a cover that are sealed together. There are 8 detection units on the substrate. Each detection unit is composed of a sequentially connected sampling channel, reaction pool and connecting channel. Injection hole and exhaust hole, the injection hole corresponds to the end of the injection channel, the exhaust hole corresponds to the end of the connection channel, and the inside or surface of the exhaust hole has a hydrophobic and breathable medium. The cover sheet in this embodiment can be opened to directly drop the sample and detection solution into the reaction pool. The chip is divided into two types, one is used to detect CoxA16 (named as CoxA16 chip), 8 reaction pools are attached with primers of RT-LAMP of the same amount of CoxA16; one is used to detect EV71 (named as EV71 chip), 8 The same amount of RT-LAMP primers of EV71 were attached to each r...

Embodiment 2

[0059] Example 2 Kit Sensitivity Verification

[0060] The chip uses CoxA16 chip and EV71 chip in embodiment 1.

[0061] (1) Use the Qiagen kit to extract the RNA of enterovirus EV71, dilute it according to the gradient concentration, mix each concentration with the detection solution and add the sample to the reaction pool corresponding to the EV71 chip, 63°C, water bath for 1h, 85°C, 5min Inactivation stops the reaction, observes the color change, the result is as follows image 3 Shown, where black: 10 4 Copies / µL blue: 10 3 Copies / μL Green: 10 2 Copies / µL Sky Blue: 10 1 Copies / μL pink: 10 0 copies / μL.

[0062] Use the Qiagen kit to extract the RNA of enterovirus EV71, dilute it according to the gradient concentration, and establish the following amplification reaction system: 1 μL RNA sample, 2.5 μL BstDNA polymerase buffer (10×), 1 μL BstDNA polymerase (8 U / μL), 1 μL MV inversion Recording enzyme (10U / μL), 2.5μL dNTP (10mmol / L), 8μL Betaine (250mmol / L), 1μL MgSO 4...

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Abstract

The invention discloses a hand-foot-and-mouth disease pathogen detection primer group and a kit, belonging to the technical field of virus detection. The hand-foot-and-mouth disease pathogen detection primer group comprises an RT-LAMP primer of a coxsackie virus type A16 and / or enterovirus type 71. The kit formed by the hand-foot-and-mouth disease pathogen detection primer group comprises a micro-fluidic chip and a detection solution. By adopting the primer system, the amplified reaction background is reduced, and the sensitivity and the specificity are very good. The detection solution system of the kit saves an independent RT-PCR secondary amplification step, so that the detection time is shortened; and moreover, the denaturation and renaturation processes of nucleic acid are avoided, so that the pollution probability of RNA enzyme and amplified nucleic acid is reduced, and the detection sensitivity and the detection safety are improved. By adopting the micro-fluidic chip detection system, the requirement on experimental hardware is lowered, the consumption of a reaction reagent is reduced, the detection cost is decreased, and a detection result can be directly determined by virtue of the color change. The hand-foot-and-mouth disease pathogen detection primer group and the kit have the advantages of safety, specificity, sensitivity and convenience.

Description

technical field [0001] The invention relates to the technical field of biological detection, in particular to a hand, foot and mouth disease pathogen detection primer set and a rapid on-site detection kit for hand, foot and mouth disease based on microfluidic chip technology. Background technique [0002] Hand, foot and mouth disease is a common infectious disease in infants and young children. The onset is characterized by fever, painful oral ulcers, and herpes on the hands, feet and buttocks. HFMD virus can be transmitted through direct contact with nasopharyngeal secretions, saliva, herpes fluid or feces of an infected person. An infected person is most contagious within a week of becoming ill, but the infectious period can last for several weeks. Coxsackievirus A16 (CoxA16 virus) is the most common virus causing HFMD, usually resulting in a mild, self-limited disease, whereas enterovirus 71 (EV71) can cause HFMD, often causing severe complications and even die. [00...

Claims

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Application Information

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IPC IPC(8): C12Q1/70C12Q1/68C12N15/11C12R1/93
CPCC12Q1/6844C12Q1/70C12Q2531/119C12Q2521/107
Inventor 宋宏彬卢晓郝荣章刘雪林赵荣涛王瑞丽王金艳李杨孙中杰
Owner INST OF PLA FOR DISEASE CONTROL & PREVENTION
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