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Related Concept Videos

DNA Microarrays02:34

DNA Microarrays

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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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Extracellular Protein Microarray Technology for High Throughput Detection of Low Affinity Receptor-Ligand Interactions
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High-throughput allogeneic antibody detection using protein microarrays.

Jed Paul1, Bita Sahaf1, Spenser Perloff1

  • 1Division of Blood and Marrow Transplantation, Stanford University School of Medicine, 269 West Campus Dr., CCSR #2205, Stanford, CA 94305, United States.

Journal of Immunological Methods
|February 24, 2016
PubMed
Summary

A novel microarray method enhances the detection of HY antigens, which are minor histocompatibility antigens crucial after hematopoietic cell transplantation (HCT). This sensitive platform offers improved allogeneic antibody detection compared to traditional enzyme-linked immunosorbent assays (ELISAs).

Keywords:
AlloantibodyChronic graft versus host diseaseHY antigenHematopoietic cell transplantationProtein microarray

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Area of Science:

  • Immunology
  • Transplantation Science
  • Biotechnology

Background:

  • Traditional enzyme-linked immunosorbent assays (ELISAs) for detecting alloantibodies post-hematopoietic cell transplantation (HCT) have limitations in sensitivity and throughput.
  • Protein microarrays offer a promising alternative for multiplexed, sensitive, and high-throughput detection of antibodies.

Purpose of the Study:

  • To develop and validate a novel, sensitive protein microarray method for detecting allogeneic antibodies against Y-chromosome-encoded minor histocompatibility antigens (HY antigens).
  • To optimize microarray surfaces for efficient binding of both recombinant protein and peptide HY antigens.
  • To compare the performance of the developed microarray assay with existing ELISA methods.

Main Methods:

  • Six different microarray surfaces were evaluated for their capacity to bind recombinant protein and peptide HY antigens.
  • Allogeneic immune responses in male patients receiving transplants from female donors were assessed, using normal male donor responses as a baseline.
  • Results from the HY antigen microarray were compared against previously obtained ELISA data.

Main Results:

  • The Epoxy (Schott) protein microarray surface demonstrated the highest sensitivity and reliability for HY antigen detection.
  • This optimized surface has been adopted as the standard for the platform's HY antigen detection capabilities.
  • The microarray method showed potential for enhanced antibody detection across both protein and peptide epitopes.

Conclusions:

  • A sensitive and reliable protein microarray platform has been successfully developed for detecting allogeneic antibodies against HY antigens.
  • The Epoxy (Schott) surface is identified as the optimal choice for this microarray application.
  • This novel method offers significant advantages over traditional ELISAs for post-HCT alloantibody screening.