alexa Cutting edge: impaired transitional B cell production and selection in the nonobese diabetic mouse.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Quinn WJ rd, Noorchashm N, Crowley JE, Reed AJ, Noorchashm H,

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Abstract Developing B cells undergo selection at multiple checkpoints to eliminate autoreactive clones. We analyzed B cell kinetics in the NOD mouse to establish whether these checkpoints are intact. Our results show that although bone marrow production is normal in NOD mice, transitional (TR) B cell production collapses at 3 wk of age, reflecting a lack of successful immature B cell migration to the periphery. This yields delayed establishment of the follicular pool and a lack of selection at the TR checkpoint, such that virtually all immature B cells that exit the bone marrow mature without further selection. These findings suggest that compromised TR B cell generation in NOD mice yields relaxed TR selection, affording autoreactive specificities access to mature pools.
This article was published in J Immunol and referenced in Journal of Clinical & Cellular Immunology

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