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Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Proc+Natl+Acad+Sci+U+S+A 2017 ; 114 (40): E8411-20 Nephropedia Template TP
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IgH isotype-specific B cell receptor expression influences B cell fate #MMPMID28923960
Tong P; Granato A; Zuo T; Chaudhary N; Zuiani A; Han SS; Donthula R; Shrestha A; Sen D; Magee JM; Gallagher MP; van der Poel CE; Carroll MC; Wesemann DR
Proc Natl Acad Sci U S A 2017[Oct]; 114 (40): E8411-20 PMID28923960show ga
B cells produce antibodies in the context of immunoglobulin heavy chain (IgH) isotypes (e.g., IgM, IgG, and IgE). Each of these is generated either as secreted proteins or as membrane-bound B cell antigen receptors (BCRs). While much is known about how IgH isotype dictates effector function of soluble antibodies, the role of antibody isotype in the context of BCRs is not well defined. Here we demonstrate that the membrane-bound versions (mIg) of IgM, IgG1, and IgE are produced from their natural genomic loci in a hierarchal fashion, where mRNA transcripts for mIgM are always more dominant than mIgG1, which are always more dominant than mIgE, regardless of cell stage. These isotype-specific expression differences contribute to B cell regulation.