Journal of Experimental Medicine, Vol 169, 1491-1496, Copyright © 1989 by Rockefeller University Press
Vicia villosa agglutinin separates freshly isolated Peyer's Patch T cells into interleukin 5- or interleukin 2-producing subsets
S Schoenbeck, MJ Hammen and MF Kagnoff
Department of Medicine, University of California, San Diego, La Jolla 92037.
Murine L3T4 T cells freshly isolated from Peyer's Patch were fractionated
based on differential adherence to Vicia villosa agglutinin (VVA). VVA
adherent cells secreted IL-5, but not IL-2, after stimulation with Con A
and IL-1. In striking contrast, VVA nonadherent PP L3T4 T cells secreted
IL-2, but not IL-5, under the same conditions. In addition, supernatants
from VVA adherent, but not from VVA nonadherent cells cultures, enhanced
IgA secretion by LPS-stimulated splenic B cells to the same extent as
purified IL-5. Thus, IL-5- producing T cells are present in PP in situ and
may play an important role in the development of mucosal immunity. Further,
differential adherence to VVA can be used to separate T cell populations
that preferentially secrete IL-5 or IL-2.