Cell Reports (Jul 2021)

CD27−CD38+ B cells accumulated in early HIV infection exhibit transitional profile and promote HIV disease progression

  • Yajing Fu,
  • Zining Zhang,
  • Zhijun Yang,
  • Yongjun Jiang,
  • Xiaoxu Han,
  • Junjie Xu,
  • Zhenxing Chu,
  • Haibo Ding,
  • Sijia He,
  • Hong Shang

Journal volume & issue
Vol. 36, no. 2
p. 109344

Abstract

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Summary: Although peripheral B cell dysfunction in early HIV infection is established, how B cell subsets are altered by HIV infection is poorly understood. While investigating B cell subsets among individuals recently infected with HIV, we observe an accumulation of CD27−CD38+ B cells and find that these cells can directly facilitate HIV infection of primary CD4+ T cells in vitro. Comprehensive analyses of the phenotype, function, and transcriptome of the CD27−CD38+ B cell subset is conducted compared with memory and naive B cells. We find that the CD27−CD38+ B cells exhibit a transitional B cell phenotype and an extremely high turnover rate. Importantly, individuals with higher proportions of CD27−CD38+ B cells during early HIV infection tend to become rapid progressors in the chronic infection stage. In this study, we identify a peripheral transitional B cell subset that accumulates during early HIV infection and may contribute to disease progression.

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