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Enzyme-Linked Immunosorbent Assay01:33

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In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen.  Enzyme-substrate reaction allows the antigen to be visualized or...
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Snap Chip for Cross-reactivity-free and Spotter-free Multiplexed Sandwich Immunoassays
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One-Step Antibody Arrays.

Ying Qing Mao1, Lin-Hai Li2

  • 1RayBiotech Life, Peachtree Corners, GA, USA. mike@raybiotech.com.

Methods in Molecular Biology (Clifton, N.J.)
|November 25, 2020
PubMed
Summary
This summary is machine-generated.

This study details a rapid, one-step sandwich immunoassay for mouse immunoglobulin isotyping. The method uses a specialized antibody array for efficient analysis of hybridoma culture supernatants.

Keywords:
Antibody arrayFluorescence detectionOne-stepSandwich assay

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Area of Science:

  • Biochemistry
  • Immunology
  • Assay Development

Background:

  • Sandwich-based immunoassays offer high specificity and sensitivity for protein detection.
  • These assays rely on a "sandwich" complex formed by antibodies binding to an antigen.
  • One-step arrays streamline the detection process.

Purpose of the Study:

  • To describe the development of a one-step, rapid sandwich-based antibody array.
  • To enable efficient mouse immunoglobulin isotyping.
  • To facilitate analysis of hybridoma culture supernatants.

Main Methods:

  • Fixing capture antibodies onto a glass slide.
  • Utilizing a fluorescence-labelled detection antibody.
  • Implementing a one-step reaction for complex formation.

Main Results:

  • Successful development of a one-step mouse immunoglobulin isotyping array.
  • Demonstration of the array's utility in analyzing hybridoma supernatants.
  • Validation of the sandwich immunoassay principle for this application.

Conclusions:

  • The described one-step antibody array is an effective tool for mouse immunoglobulin isotyping.
  • This method provides a rapid and sensitive approach for hybridoma supernatant analysis.
  • The sandwich immunoassay format is adaptable for various protein detection applications.