Excessive amounts of mu heavy chain block B-cell development

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Excessive amounts of mu heavy chain block B-cell development.

Antigen-independent B-cell development occurs in several stages that depend on the expression of Ig heavy and light chain. We identified a line of mice that lacked mature B cells in the spleen. This mouse line carried approximately 11 copies of a transgene of the murine heavy chain constant region locus, and B-lineage cells expressed excessive amounts of the intracellular μ heavy chain. B-cell ...

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Stimulation of kappa light-chain gene rearrangement by the immunoglobulin mu heavy chain in a pre-B-cell line.

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Immunoglobulin heavy chain expression shapes the B cell receptor repertoire in human B cell development.

Developing B cells must pass a series of checkpoints that are regulated by membrane-bound Ig(mu) through the Igalpha-Igbeta signal transducers. To determine how Ig(mu) expression affects B cell development and Ab selection in humans we analyzed Ig gene rearrangements in pro-B cells from two patients who are unable to produce Ig(mu) proteins. We find that Ig(mu) expression does not affect V(H), ...

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ژورنال

عنوان ژورنال: International Immunology

سال: 2011

ISSN: 0953-8178,1460-2377

DOI: 10.1093/intimm/dxr049