Regulation of human epsilon germline transcription: Role of B-cell-specific activator protein

Lucia De Monte, Cortlandt P. Thienes, Silvia Monticelli, Meinrad Busslinger, Hannah J. Gould, Donata Verceli

Research output: Contribution to journalArticlepeer-review


Germline transcripts initiate from promoters upstream of the immunoglobulin switch region, and are necessary to target the appropriate switch region for recombination and switching. Different cytokines activate transcription at the appropriate germline promoter. Because binding sites for B-cell-specific activator protein (BSAP) are located upstream of several switch regions in the immunoglobulin heavy chain gene cluster, BSAP might play a role in the regulation of germline transcription and isotype switching. We investigated whether BSAP plays a role in the transcriptional regulation of the ε germline promoter in human B cells. Our results showed that BSAP plays a role in both IL-4-dependent induction and CD40-mediated upregulation of human ε germline transcription. BSAP is unique among the transcription factors that regulate ε germline expression, because it is B cell specific, and is at the merging point of two signalling pathways that are critical for IgE switching.

Original languageEnglish
Pages (from-to)35-38
Number of pages4
JournalInternational Archives of Allergy and Immunology
Issue number1-3
Publication statusPublished - 1997


  • B lymphocytes
  • Cytokines
  • Gene regulation
  • IgE
  • Transcription factors

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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