Assembly of the Truncated Immunoglobulin Heavy Chain Dμ into Antigen Receptor–Like Complexes in Pre-B Cells but Not in B Cells

作者: Mary C Horne , Patricia E Roth , Anthony L DeFranco

DOI: 10.1016/S1074-7613(00)80679-2

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摘要: Rearrangements of the IgH locus with JH joined to reading frame 2 DH are greatly underrepresented in B cells. These rearrangements encode truncated heavy chain D mu. In pre-B cells, we found mu protein expressed on cell surface and assembled into a complex surrogate light chains, Ig alpha, beta. Cross-linking either m- or containing receptors triggered signal transduction reactions. contrast, when mature lines, was not detected did efficiently bind kappa immunoglobulin but associate alpha results characterize interactions other components antigen receptor suggest possible mechanisms by which expression may interfere development.

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