PLoS ONE (Jan 2015)

Impaired Function of CD5+CD19+CD1dhi B10 Cells on IgE Secretion in an Atopic Dermatitis-Like Mouse Model.

  • Jieqiong Li,
  • Chunping Shen,
  • Ying Liu,
  • Yunzhu Li,
  • Lin Sun,
  • Lei Jiao,
  • Weiwei Jiao,
  • Jing Xiao,
  • Chen Shen,
  • Hui Qi,
  • Fang Xu,
  • Lin Ma

DOI
https://doi.org/10.1371/journal.pone.0132173
Journal volume & issue
Vol. 10, no. 8
p. e0132173

Abstract

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Atopic dermatitis (AD) is a chronic inflammatory pruritic skin disease in which the pathogenic mechanism is complicated and not completely understood. Reports on the role of regulated cells in AD have recently evolved to regulate B cells, which may play a role in allergic inflammation as well. In the present study, we examined the frequency and regulatory function of CD5+CD19+CD1dhi B10 cells in an AD-like mouse model. Our results showed that the percentage of CD5+CD19+CD1dhi B10 cells increased while the frequency of IL-10-producing B cells in CD19+B cells decreased in the mice of AD group. Moreover, no difference in the percentage of B10pro + B10 cells was observed between the AD and control groups. Strikingly, B10 cells from control mice effectively inhibited IgE secretion, whereas the suppressive function of B10 cells from the AD mice was significantly decreased, which was similar to that observed in the group without B10. Altogether, these results suggest that the number of IL-10-producing B cells decreased in the AD group and these cells showed a defective regulatory function on IgE secretion.