As the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic expanded, it was clear that effective testing for the presence of neutralizing antibodies in the blood of convalescent patients would be critical for development of plasma-based therapeutic approaches. To address the need for a high-quality neutralization assay against SARS-CoV-2, a previously established fluorescence reduction neutralization assay (FRNA) against Middle East respiratory syndrome coronavirus (MERS-CoV) was modified and optimized. The SARS-CoV-2 FRNA provides a quantitative assessment of a large number of infected cells through use of a high-content imaging system. Because of this approach, and the fact that it does not involve subjective interpretation, this assay is more efficient and more accurate than other neutralization assays. In addition, the ability to set robust acceptance criteria for individual plates and specific test wells provided further rigor to this assay. Such agile adaptability avails use with multiple virus variants. By February 2021, the SARS-CoV-2 FRNA had been used to screen over 5000 samples, including acute and convalescent plasma or serum samples and therapeutic antibody treatments, for SARS-CoV-2 neutralizing titers.
【저자키워드】 COVID-19, antibodies, SARS-CoV-2, coronavirus, SARS-CoV, neutralization, Diagnosis, COVID, 【초록키워드】 convalescent plasma, neutralizing antibody, coronavirus, pandemic, Neutralizing antibodies, antibody, severe acute respiratory syndrome Coronavirus, MERS-CoV, Convalescent patients, Neutralization assay, therapeutic, Interpretation, Middle East respiratory syndrome Coronavirus, virus variants, respiratory, Critical, Blood, convalescent patient, Middle East respiratory syndrome, criteria, Middle East, reduction, acute respiratory syndrome, subjective interpretation, acute respiratory syndrome coronavirus, serum samples, acute respiratory syndrome coronavirus 2, therapeutic approaches, infected cells, neutralizing titers, respiratory syndrome coronavirus, neutralization assays, quantitative assessment, serum sample, high-content imaging, approach, effective, Cell, robust, addition, provided, provide, number of infected, the SARS-CoV-2, 【제목키워드】 Human, clinical, assessment, Sample,