Dual immunoglobulin light chain B cells: Trojan horses of autoimmunity?

Dual immunoglobulin light chain B cells: Trojan horses of autoimmunity? Curr Opin Immunol. 2014 Feb 15;27C:53-59 Authors: Pelanda R Abstract Receptor editing, a major mechanism of B cell tolerance, can also lead to allelic inclusion at the immunoglobulin light chain loci and the development of B cells that coexpress two different immunoglobulin light chains and, therefore, two antibody specificities. Most allelically included B cells express two κ chains, although rare dual-λ cells are also observed. Moreover, these cells typically coexpress an autoreactive and a nonautoreactive antibody. Thus, allelically included B cells could operate like 'Trojan horses': expression and function of the nonautoreactive antigen receptors might promote their maturation, activation, and terminal differentiation into effector cells that also express and secrete autoantibodies. Indeed, dual-κ B cells are greatly expanded into effector B cell subsets in some autoimmune mice, thus indicating they might play an important role in disease. PMID: 24549093 [PubMed - as supplied by publisher]
Source: Current Opinion in Immunology - Category: Allergy & Immunology Authors: Tags: Curr Opin Immunol Source Type: research