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© Research
Publication : Nature immunology

Thymic stromal-derived lymphopoietin distinguishes fetal from adult B cell development

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Nature immunology - 20 Jul 2003

Vosshenrich CA, Cumano A, Müller W, Di Santo JP, Vieira P

Link to Pubmed [PMID] – 12872121

Nat. Immunol. 2003 Aug;4(8):773-9

Deletions of interleukin 7 (IL-7) or its receptor components permit fetal but not adult B cell development in mice. Mice deficient in IL-7 receptor alpha (IL-7R alpha) had 1% the number of B cells of controls and 10% that of mice deficient in the common gamma chain. As IL-7R alpha is also a receptor for thymic stromal-derived lymphopoietin (TSLP), we assayed the ability of TSLP to support proliferation of fetal or adult precursor B cells. Only fetal-derived pro-B cells were able to respond to TSLP, although pre-B cells from both origins were TSLP-responsive. Fetal but not adult precursors generated a measurable B cell compartment in the absence of IL-7. The residual B cells found in IL-7R alpha-deficient mice required fetal liver kinase 2 (Flk-2) for their development. Thus, IL-7R alpha- and Flk-2-mediated signals account for the generation of almost all mouse B lymphocytes.

http://www.ncbi.nlm.nih.gov/pubmed/12872121