Cell Reports Medicine (May 2021)

Divergent and self-reactive immune responses in the CNS of COVID-19 patients with neurological symptoms

  • Eric Song,
  • Christopher M. Bartley,
  • Ryan D. Chow,
  • Thomas T. Ngo,
  • Ruoyi Jiang,
  • Colin R. Zamecnik,
  • Ravi Dandekar,
  • Rita P. Loudermilk,
  • Yile Dai,
  • Feimei Liu,
  • Sara Sunshine,
  • Jamin Liu,
  • Wesley Wu,
  • Isobel A. Hawes,
  • Bonny D. Alvarenga,
  • Trung Huynh,
  • Lindsay McAlpine,
  • Nur-Taz Rahman,
  • Bertie Geng,
  • Jennifer Chiarella,
  • Benjamin Goldman-Israelow,
  • Chantal B.F. Vogels,
  • Nathan D. Grubaugh,
  • Arnau Casanovas-Massana,
  • Brett S. Phinney,
  • Michelle Salemi,
  • Jessa R. Alexander,
  • Juan A. Gallego,
  • Todd Lencz,
  • Hannah Walsh,
  • Anne E. Wapniarski,
  • Subhasis Mohanty,
  • Carolina Lucas,
  • Jon Klein,
  • Tianyang Mao,
  • Jieun Oh,
  • Aaron Ring,
  • Serena Spudich,
  • Albert I. Ko,
  • Steven H. Kleinstein,
  • John Pak,
  • Joseph L. DeRisi,
  • Akiko Iwasaki,
  • Samuel J. Pleasure,
  • Michael R. Wilson,
  • Shelli F. Farhadian

Journal volume & issue
Vol. 2, no. 5
p. 100288

Abstract

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Summary: Individuals with coronavirus disease 2019 (COVID-19) frequently develop neurological symptoms, but the biological underpinnings of these phenomena are unknown. Through single-cell RNA sequencing (scRNA-seq) and cytokine analyses of cerebrospinal fluid (CSF) and blood from individuals with COVID-19 with neurological symptoms, we find compartmentalized, CNS-specific T cell activation and B cell responses. All affected individuals had CSF anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies whose target epitopes diverged from serum antibodies. In an animal model, we find that intrathecal SARS-CoV-2 antibodies are present only during brain infection and not elicited by pulmonary infection. We produced CSF-derived monoclonal antibodies from an individual with COVID-19 and found that these monoclonal antibodies (mAbs) target antiviral and antineural antigens, including one mAb that reacted to spike protein and neural tissue. CSF immunoglobulin G (IgG) from 5 of 7 patients showed antineural reactivity. This immune survey reveals evidence of a compartmentalized immune response in the CNS of individuals with COVID-19 and suggests a role of autoimmunity in neurologic sequelae of COVID-19.

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