Regulatory B10 cells differentiate into antibody-secreting cells after transient IL-10 production in vivo.

Published

Journal Article

Regulatory B cells that are functionally defined by their capacity to express IL-10 (B10 cells) downregulate inflammation and autoimmunity. In studies using well-defined IL-10 reporter mice, this rare B10 cell subset was also found to maintain a capacity for plasma cell differentiation. During a transient period of il10 transcription, the blimp1 and irf4 transcription factors were induced in B10 cells, whereas pax5 and bcl6 were downregulated as a significant fraction of B10 cells completed the genetic and phenotypic program leading to Ab-secreting cell differentiation in vitro and in vivo. B10 cell-derived IgM reacted with both self- and foreign Ags, whereas B10 cells generated Ag-specific IgG in response to immunizations. Moreover, B10 cells represented a significant source of serum IgM and IgG during adoptive-transfer experiments and produced Ag-specific, polyreactive and autoreactive Ab specificities that were consistent with their expression of a diverse AgR repertoire. Thereby, B10 cells limit inflammation and immune responses by the transient production of IL-10, and may facilitate clearance of their eliciting Ags through an inherent capacity to quickly generate polyreactive and/or Ag-specific Abs during humoral immune responses.

Full Text

Duke Authors

Cited Authors

  • Maseda, D; Smith, SH; DiLillo, DJ; Bryant, JM; Candando, KM; Weaver, CT; Tedder, TF

Published Date

  • February 1, 2012

Published In

Volume / Issue

  • 188 / 3

Start / End Page

  • 1036 - 1048

PubMed ID

  • 22198952

Pubmed Central ID

  • 22198952

Electronic International Standard Serial Number (EISSN)

  • 1550-6606

Digital Object Identifier (DOI)

  • 10.4049/jimmunol.1102500

Language

  • eng

Conference Location

  • United States