Detecting Circulating Anti-Glycan Antibodies with a Printed Glycan Array

Published: April 30, 2024

Abstract

Source: Olivera-Ardid, S. et al., Printed Glycan Array: A Sensitive Technique for the Analysis of the Repertoire of Circulating Anti-carbohydrate Antibodies in Small Animals. J. Vis. Exp. (2019)

This video demonstrates printed glycan array technology for analyzing circulating anti-glycan antibodies in mouse serum. The antibodies in the serum interact with specific glycans on the chip, which is confirmed by immunostaining followed by fluorescence scanning.

Protocol

All procedures involving sample collection have been performed in accordance with the institute's IRB guidelines. 1. Glycochips Production Microarray preparation Print the glycans (50 mM) and polysaccharides (10 µg/mL) in 300 mM phosphate-buffered saline (PBS, pH 8.5) at 6 replicates onto N-hydroxysuccinimide-derivatized glass slides, using non-contact robotic arrayer (drop volume ~900 pL). Each slide contains 4 different block…

Representative Results

Figure 1: Schematic representation (not at scale) of the glycan array configuration, printing, and analysis. (A) Printed microchips are developed with a library of 419 different glycan structures, followed by the detection with an appropriate fluorescently labeled secondary antibody. Each slide contains 4 different blocks of sub-arrays (in colors), repeated 6 times. Every si…

Disclosures

The authors have nothing to disclose.

Materials

Antibodies
Biotinylated goat anti-human Igs Thermo Fisher Scientific, Waltham, MA, USA Ref. #: 31782
Biotinylated goat anti-mouse IgM + IgG Thermo Fisher Scientific Ref. #: 31807
Equipment
Robotic Arrayer sciFLEXARRAYER S5  Scienion AG, Berlin, Germany http://www.scienion.com/products/sciflexarrayer/
Stain Tray (slide incubation chamber) Simport, Beloeil, QC, Canada Ref. #: M920-2
Centrifuge Eppendorf, Hamburg, Germany  Ref. #: 5810 R
Pipettes Gilson, Middleton, WI, USA http://www.gilson.com/en/Pipette/
Slide Scanner  PerkinElmer, Waltham, MA, USA ScanArray GX Plus 
Shaking incubator Cole-Parmer, Staffordshire, UK Ref. #: SI50
Biological samples
BALB/c mice sera This paper N/ A
Complex Immunoglobulin Preparation (CIP) Immuno-Gem, Moscow, Russia http://www.biomedservice.ru/price/goods/1/17531
Chemicals, Reagents and Glycans 
Glycan library Institute of Bioorganic Chemistry (IBCh), Moscow, Russia N/ A
Bovine serum albumin (BSA) Sigma-Aldrich, St. Louis, MO,  Ref. #: A9418
Ethanolamine Sigma-Aldrich Ref. #: 411000
Tween-20 Merck Chemicals & Life Science S.A., Madrid, Spain Ref. #: 655204
Phospahte-buffered saline (PBS) VWR International Eurolab S.L, Barcelona, Spain Ref. #: E404
Sodium azide Sigma-Aldrich Ref. #: S2002
Streptavidin Alexa Fluor 555 conjugate  Thermo Fisher Scientific Ref. #: S21381
Streptavidin Cy5 conjugate GE Healthcare, Little Chalfont, Buckinghamshire, UK Ref. #: PA45001
Materials
N-hydroxysuccinimide-derivatized glass slides H  Schott-Nexterion, Jena, Germany Ref. #: 1070936
Whatman filter paper  Sigma-Aldrich Ref. #: WHA10347509
1.5 mL tubes Eppendorf  Ref. #: 0030120086
Software and algorithms
ScanArray Express Microarray Analysis System PerkinElmer http://www.per
kinelmer.com/microarray

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Cite This Article
Detecting Circulating Anti-Glycan Antibodies with a Printed Glycan Array. J. Vis. Exp. (Pending Publication), e22114, doi: (2024).

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