Array-based analysis of SARS-CoV-2, other coronaviruses, and influenza antibodies in convalescent COVID-19 patients

https://doi.org/10.1016/j.bios.2020.112643Get rights and content

Highlights

  • Antibody detection is key to addressing COVID-19 and other upper respiratory diseases.

  • We describe an arrayed sensor for COVID-19, other coronaviruses, and influenza.

  • The sensor can quantify antibody responses in convalescent COVID-19 patients.

  • Quantitative results are consistent with gold-standard ELISA assays.

Abstract:

Detection of antibodies to upper respiratory pathogens is critical to surveillance, assessment of the immune status of individuals, vaccine development, and basic biology. The urgent need for antibody detection tools has proven particularly acute in the COVID-19 era. We report a multiplex label-free antigen microarray on the Arrayed Imaging Reflectometry (AIR) platform for detection of antibodies to SARS-CoV-2, SARS-CoV-1, MERS, three circulating coronavirus strains (HKU1, 229E, OC43) and three strains of influenza. We find that the array is readily able to distinguish uninfected from convalescent COVID-19 subjects, and provides quantitative information about total Ig, as well as IgG- and IgM-specific responses.

Keywords

SARS-CoV-2
Coronavirus
Influenza virus
Antigen microarray
Label-free biosensor

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1

These authors contributed equally.

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