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The Plasticity of Newly Formed B Cells.

The Plasticity of Newly Formed B Cells.
Dec 2019
The Journal of Immunology
Natalia V. Giltiay, Ph.D.


Newly formed B cells (NF-B cells) that emerge from the bone marrow to the periphery have often been referred to as immature or transitional B cells. However, NF-B cells have several striking characteristics, including a distinct BCR repertoire, high expression of AID, high sensitivity to PAMPs, and the ability to produce cytokines. A number of findings do not support their designation as immature because NF-B cells have the potential to become Ab-producing cells and to undergo class-switch recombination. In this review, we provide a fresh perspective on NF-B cell functions and describe some of the signals driving their activation. We summarize growing evidence supporting a role for NF-B cells in protection against infections and as a potential source of autoantibody-producing cells in autoimmune diseases such as systemic lupus erythematosus.

PMID: 31818922
PMCID: PMC6961804
[Available on 2020-12-15]
DOI: 10.4049/jimmunol.1900928