Combined detection method of virus neutralizing antibody and non-neutralizing antibody, detection card and application

A technology of antibody detection and joint detection, which is applied in the field of biomedical detection, can solve the problems of inability to distinguish neutralizing antibodies from non-neutralizing antibodies, poor specificity, and low detection sensitivity of neutralizing antibodies, achieving fast detection speed and improving specificity , the effect of high sensitivity

Active Publication Date: 2021-11-02
NANJING LEADING BIOMEDICAL TECH CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of low detection sensitivity, poor specificity and inability to distinguish neutralizing antibodies from non-neutralizing antibodies in the prior art, and provide a simple, fast, highly sensitive and specific virus neutralization Combined detection method of antibody and non-neutralizing antibody, detection card and application thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Combined detection method of virus neutralizing antibody and non-neutralizing antibody, detection card and application
  • Combined detection method of virus neutralizing antibody and non-neutralizing antibody, detection card and application
  • Combined detection method of virus neutralizing antibody and non-neutralizing antibody, detection card and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] A detection card for SARS-CoV-2 neutralizing antibody and non-neutralizing antibody, the detection card includes a chromatographic test paper, a housing and a sample diluent, and the chromatographic test paper includes a bottom plate, a sample pad 1, a binding pad 2, NC membrane 3 and water-absorbing pad 4, the sample pad 1, binding pad 2, NC membrane 3 and water-absorbing pad 4 are sequentially pasted on one side of the bottom plate; the NC membrane 3 is sequentially provided with non-neutralizing antibody detection lines 5, Neutralizing antibody detection line 6 and quality control line 7, the non-neutralizing antibody detection line 5 is close to the binding pad 2, the quality control line 7 is close to the water-absorbing pad 4, and the non-neutralizing antibody detection line 5 is coated with RBD - ACE2 protein binding complex, the detection line 6 is coated with RBD protein; the binding pad is provided with RBD protein markers and chicken IgY markers, the label car...

Embodiment 2

[0091] A detection card for SARS-CoV-2 neutralizing antibody and non-neutralizing antibody, comprising chromatography test paper, housing and sample diluent, said chromatography test paper comprising bottom plate, sample pad, binding pad, NC membrane and water-absorbing pad , the sample pad, binding pad, NC membrane and water-absorbent pad are pasted on one side of the bottom plate in sequence; the NC membrane is provided with a non-neutralizing antibody detection line, a neutralizing antibody detection line and a quality control line in sequence, and the non-neutralizing antibody detection line and quality control line are sequentially arranged on the non-neutralizing antibody The neutralizing antibody detection line is close to the binding pad, the quality control line is close to the water-absorbing pad, the non-neutralizing antibody detection line is coated with RBD-ACE2 protein binding complex, and the neutralizing antibody detection line is coated with RBD protein; The bi...

Embodiment 3

[0095] A detection card for SARS-CoV-2 neutralizing antibody and non-neutralizing antibody, comprising chromatography test paper, housing and sample diluent, said chromatography test paper comprising bottom plate, sample pad, binding pad, NC membrane and water-absorbing pad , the sample pad, binding pad, NC membrane and water-absorbent pad are pasted on one side of the bottom plate in sequence; the NC membrane is provided with a non-neutralizing antibody detection line, a neutralizing antibody detection line and a quality control line in sequence, and the non-neutralizing antibody detection line and quality control line are sequentially arranged on the non-neutralizing antibody The neutralizing antibody detection line is close to the binding pad, the quality control line is close to the water-absorbing pad, the non-neutralizing antibody detection line is coated with RBD-ACE2 protein binding complex, and the neutralizing antibody detection line is coated with RBD protein; The bi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
Login to view more

Abstract

A method for combined detection of virus neutralizing antibodies and non-neutralizing antibodies, a detection card and its application, which detects neutralizing antibodies through the principle of virus receptor binding protein sandwich method, which is to set virus receptor binding proteins in advance and block neutralization The complex formed by the antibody and its ligand-binding protein captures the non-neutralizing antibody targeting the receptor protein in advance to ensure the specificity of the neutralizing antibody detected by the sandwich method. The invention solves the problems of low sensitivity, poor specificity and inability to distinguish neutralizing antibodies from non-neutralizing antibodies in the prior art, and provides a simple, rapid, highly sensitive and specific virus-neutralizing antibody and non-neutralizing antibody Neutralizing antibody joint detection method, detection card and application thereof.

Description

technical field [0001] The invention belongs to the technical field of biomedical detection, and in particular relates to a highly sensitive and highly specific combined detection method for virus neutralizing antibodies and non-neutralizing antibodies, a detection card and applications thereof. Background technique [0002] When the virus infects humans, the receptor-binding protein on the surface of the virus will bind to the receptor on the surface of the host cell, thereby entering the host cell, causing symptoms such as fever and infection in the host. After the human body is invaded by a virus or vaccinated, it will produce antibodies through the immune response, and some of the antibodies can specifically bind to the receptor binding region on the surface of the virus, thereby preventing the virus from entering the host cell, which is a neutralizing antibody; while other antibodies produced It can bind to the virus, but cannot block the receptor binding protein on the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/68G01N33/569G01N33/558G01N33/58G01N33/531G01N33/53
CPCG01N33/6854G01N33/56983G01N33/558G01N33/587G01N33/585G01N33/582G01N33/531G01N33/5302G01N2469/20G01N2333/165G01N2333/08G01N2333/115
Inventor 张玉基王鹏王倩王维徐达叶赟
Owner NANJING LEADING BIOMEDICAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap