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Título del libro: Microtas 2021 - 25th International Conference On Miniaturized Systems For Chemistry And Life Sciences
Título del capítulo: A HIGH-THROUGHPUT MULTIPLEXED MICROFLUIDIC DEVICE FOR COVID-19 SEROLOGY ASSAYS

Autores UNAM:
GILBERTO VARGAS ALARCON;
Autores externos:

Idioma:

Año de publicación:
2021
Palabras clave:

Antigens; Diagnosis; Fluidic devices; Microfluidics; High potential; High sensitivity; High-throughput; Infectious disease; Microfluidic immunoassay; Microfluidics devices; MITOMI; Receptor-binding domains; Serological assay; Serum samples; Coronavirus; COVID-19


Resumen:

The need to develop high-throughput diagnostic platforms for infectious diseases has never been more evident than with the emergence of SARS-CoV-2 and the ensued COVID-19 pandemic. Microfluidics, in tandem with its multiplexing capabilities, high sensitivity, and potential for automation, provides a unique advantage towards the development of high-throughput serological diagnostic platforms. Here, we present a microfluidic device that detects IgG or IgM raised against four SARS-CoV-2 antigens (spike, S; S1 subunit, S1; the receptor-binding domain, RBD; and nucleocapsid, N) from 50 serum samples in parallel. We validated the platform with a cross-sectional cohort of 66 samples from confirmed COVID-19 patients and a pre-pandemic control of 34 serum samples collected in 2018. The analysis of both antibodies against all four viral antigens provided a sensitivity of 90.4% and a specificity of 94.1%, with both parameters increasing to 100% in late-stage samples (21-30 days after symptoms onset). We expect our device to open the door to massive serological testing, impacting diagnostics, vaccine development, and epidemiological understanding of COVID-19. © 2021 MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences. All rights reserved.


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