Nature Communications (May 2019)

Bacteroides fragilis polysaccharide A induces IL-10 secreting B and T cells that prevent viral encephalitis

  • Chandran Ramakrishna,
  • Maciej Kujawski,
  • Hiutung Chu,
  • Lin Li,
  • Sarkis K. Mazmanian,
  • Edouard M. Cantin

DOI
https://doi.org/10.1038/s41467-019-09884-6
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 13

Abstract

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The capsular polysaccharide A (PSA) of Bacteroides fragilis is known to have immunomodulatory capability during sterile inflammatory disorders. Here Ramakrishna and colleagues show that PSA administration in a murine model of herpes simplex encephalitis induces IL-10 producing B and T cell populations that confer protection against lethal challenge and brain pathology.