ZFIN ID: ZDB-PUB-130726-18
An evolutionarily conserved program of B cell development and activation in zebrafish
Page, D.M., Wittamer, V., Bertrand, J.Y., Lewis, K.L., Pratt, D.N., Delgado, N., Schale, S.E., McGue, C., Jacobsen, B.H., Doty, A., Pao, Y., Yang, H., Chi, N.C., Magor, B.G., and Traver, D.
Date: 2013
Source: Blood   122(8): e1-e11 (Journal)
Registered Authors: Bertrand, Julien, Chi, Neil C., Page, Dawne, Traver, David, Wittamer, Valerie, Yang, Hongbo
Keywords: none
MeSH Terms:
  • Adaptive Immunity
  • Animals
  • Animals, Genetically Modified
  • B-Lymphocytes/cytology*
  • B-Lymphocytes/metabolism
  • Evolution, Molecular*
  • Genes, Reporter
  • Green Fluorescent Proteins/metabolism
  • Immune System/embryology
  • Immunoglobulin M/metabolism
  • Lymphocyte Activation
  • Phagocytosis
  • Zebrafish/embryology*
  • Zebrafish/immunology*
PubMed: 23861249 Full text @ Blood

Teleost fish are among the most ancient vertebrates possessing an adaptive immune system with B and T lymphocytes that produce memory responses to pathogens. Most bony fish, however, have only two types of B lymphocytes, in contrast to the four types available to mammals. To better understand the evolution of adaptive immunity, we generated transgenic zebrafish in which the major IgM+ B cell subset expresses GFP (IgM1:eGFP). We discovered that the earliest IgM+ B cells appear between the dorsal aorta and posterior cardinal vein and also in the kidney around 20 days post-fertilization. We also examined B cell ontogeny in adult IgM1:eGFP; rag2:DsRed animals, where we defined pro-, pre-, and immature/mature B cells in the adult kidney. Sites of B cell development that shift between the embryo and adult have previously been described in birds and mammals. Our results suggest that this developmental shift occurs in all jawed vertebrates. Finally, we used IgM1:eGFP and cd45DsRed; blimp1:eGFP zebrafish to characterize plasma B cells and investigate B cell function. The IgM1:eGFP reporter fish are the first non-mammalian B cell reporter animals to be described. They will be important for further investigation of immune cell evolution and development and host-pathogen interactions in zebrafish.