B cell positive selection: road map to the primary repertoire?

Academic Article


  • Accumulating evidence indicates that positive selection events mediate differentiation, lineage commitment, and longevity of B lymphocytes. The BCR plays a central role, dictating the likelihood that newly formed cells will complete maturation, as well as whether cells persist within mature pools. Competition among B cells for limited, life span-promoting resources, which include self-ligands, lineage-specific cytokines, and innate receptor ligands, underlie these selective processes. Together, these observations suggest that positive selection is a critical feature in the establishment and maintenance of all lymphocyte pools, prompting re-evaluation of the underlying biological rationale for this process.
  • Published In


  • Animals, B-Lymphocytes, Epitopes, B-Lymphocyte, Humans, Receptors, Antigen, B-Cell, Signal Transduction
  • Pubmed Id

  • 25943122
  • Author List

  • Cancro MP; Kearney JF
  • Start Page

  • 15
  • End Page

  • 19
  • Volume

  • 173
  • Issue

  • 1