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Baff Mediates Survival of Peripheral Immature B Lymphocytes
| Content Provider | Scilit |
|---|---|
| Author | Batten, Marcel Groom, Joanna Cachero, Teresa G. Qian, Fang Schneider, Pascal Tschopp, Jurg Browning, Jeffrey Mackay, Fabienne |
| Copyright Year | 2000 |
| Description | B cell maturation is a very selective process that requires finely tuned differentiation and survival signals. B cell activation factor from the TNF family (BAFF) is a TNF family member that binds to B cells and potentiates B cell receptor (BCR)-mediated proliferation. A role for BAFF in B cell survival was suggested by the observation of reduced peripheral B cell numbers in mice treated with reagents blocking BAFF, and high Bcl-2 levels detected in B cells from BAFF transgenic (Tg) mice. We tested in vitro the survival effect of BAFF on lymphocytes derived from primary and secondary lymphoid organs. BAFF induced survival of a subset of splenic immature B cells, referred to as transitional type 2 (T2) B cells. BAFF treatment allowed T2 B cells to survive and differentiate into mature B cells in response to signals through the BCR. The T2 and the marginal zone (MZ) B cell compartments were particularly enlarged in BAFF Tg mice. Immature transitional B cells are targets for negative selection, a feature thought to promote self-tolerance. These findings support a model in which excessive BAFF-mediated survival of peripheral immature B cells contributes to the emergence and maturation of autoreactive B cells, skewed towards the MZ compartment. This work provides new clues on mechanisms regulating B cell maturation and tolerance. |
| Related Links | http://jem.rupress.org/content/192/10/1453.full.pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2193190/pdf https://rupress.org/jem/article-pdf/192/10/1453/980076/001333.pdf |
| Ending Page | 1466 |
| Page Count | 14 |
| Starting Page | 1453 |
| DOI | 10.1084/jem.192.10.1453 |
| Journal | The Journal of experimental medicine |
| Issue Number | 10 |
| Volume Number | 192 |
| Language | English |
| Publisher | Rockefeller University Press |
| Publisher Date | 2000-11-20 |
| Access Restriction | Open |
| Subject Keyword | Immunology B Cell Maturation Autoimmunity Transitional B Lymphocyte Spleen Antigen Receptor Journal: The Journal of experimental medicine (Vol- 192, Issue- 10) |
| Content Type | Text |