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Rapid Generation of Neutralizing Antibody Responses in COVID-19 Patients.


ABSTRACT: SARS-CoV-2, the virus responsible for COVID-19, is causing a devastating worldwide pandemic, and there is a pressing need to understand the development, specificity, and neutralizing potency of humoral immune responses during acute infection. We report a cross-sectional study of antibody responses to the receptor-binding domain (RBD) of the spike protein and virus neutralization activity in a cohort of 44 hospitalized COVID-19 patients. RBD-specific IgG responses are detectable in all patients 6 days after PCR confirmation. Isotype switching to IgG occurs rapidly, primarily to IgG1 and IgG3. Using a clinical SARS-CoV-2 isolate, neutralizing antibody titers are detectable in all patients by 6 days after PCR confirmation and correlate with RBD-specific binding IgG titers. The RBD-specific binding data were further validated in a clinical setting with 231 PCR-confirmed COVID-19 patient samples. These findings have implications for understanding protective immunity against SARS-CoV-2, therapeutic use of immune plasma, and development of much-needed vaccines.

SUBMITTER: Suthar MS 

PROVIDER: S-EPMC7276302 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Rapid Generation of Neutralizing Antibody Responses in COVID-19 Patients.

Suthar Mehul S MS   Zimmerman Matthew G MG   Kauffman Robert C RC   Mantus Grace G   Linderman Susanne L SL   Hudson William H WH   Vanderheiden Abigail A   Nyhoff Lindsay L   Davis Carl W CW   Adekunle Oluwaseyi O   Affer Maurizio M   Sherman Melanie M   Reynolds Stacian S   Verkerke Hans P HP   Alter David N DN   Guarner Jeannette J   Bryksin Janetta J   Horwath Michael C MC   Arthur Connie M CM   Saakadze Natia N   Smith Geoffrey H GH   Edupuganti Srilatha S   Scherer Erin M EM   Hellmeister Kieffer K   Cheng Andrew A   Morales Juliet A JA   Neish Andrew S AS   Stowell Sean R SR   Frank Filipp F   Ortlund Eric E   Anderson Evan J EJ   Menachery Vineet D VD   Rouphael Nadine N   Mehta Aneesh K AK   Stephens David S DS   Ahmed Rafi R   Roback John D JD   Wrammert Jens J  

Cell reports. Medicine 20200608 3


SARS-CoV-2, the virus responsible for COVID-19, is causing a devastating worldwide pandemic, and there is a pressing need to understand the development, specificity, and neutralizing potency of humoral immune responses during acute infection. We report a cross-sectional study of antibody responses to the receptor-binding domain (RBD) of the spike protein and virus neutralization activity in a cohort of 44 hospitalized COVID-19 patients. RBD-specific IgG responses are detectable in all patients 6  ...[more]

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