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Media type:
E-Article
Title:
Recombinant interleukin 7, pre-B cell growth factor, has costimulatory activity on purified mature T cells
Contributor:
Morrissey, P J;
Goodwin, R G;
Nordan, R P;
Anderson, D;
Grabstein, K H;
Cosman, D;
Sims, J;
Lupton, S;
Acres, B;
Reed, S G
imprint:
Rockefeller University Press, 1989
Published in:The Journal of experimental medicine
Language:
English
DOI:
10.1084/jem.169.3.707
ISSN:
1540-9538;
0022-1007
Origination:
Footnote:
Description:
<jats:p>The activation of highly purified murine peripheral T cells in vitro by Con A is dependent on a co-stimulatory signal that is not IL-1 or IL-2. Previous evidence has demonstrated that the recently defined lymphokine IL-6 could provide costimulatory activity for purified T cells cultured with Con A. In this report we demonstrate that IL-7 also has potent co-stimulatory activity for purified murine T cells, as well as its previously described ability to support the growth of pre-B cells in Witte-Whitlock cultures. When rIL-7 was added to cultures of purified T cells together with Con A, it induced the expression of IL-2 receptors, IL-2 production, and consequently proliferation. In addition, IL-7 exhibited the same magnitude of activity in this assay as IL-6. Also, anti-IL-6 antibody which inhibited the IL-6-induced response had no effect on the IL-7 response. Thus, IL-7 does not act by inducing IL-6. These results demonstrate that IL-7, a potent growth stimulus for pre-B cells, also has a role in T cell activation.</jats:p>