Ln. Ruben et al., A COMPARISON OF THE EFFECTS OF HUMAN RIL-2 AND AUTOLOGOUS TCGF ON XENOPUS-LAEVIS SPLENOCYTES IN-VITRO, Cellular immunology, 157(1), 1994, pp. 300-305
Prior studies have shown that intraperitoneal (ip) injection of 25 IU
of human rIL-2 can effectively modulate in vivo immune reactivity to t
hymus-dependent and thymus-independent type 2 immunogens in Xenopus la
evis, the South African clawed toad, but is less successful at affecti
ng toad cells in vitro. Here we compare the capacities of human rIL-2
and autologous TCGF to modulate Xenopus splenocytes in vitro and find
that autologous TCGF (1) is more effective at stimulating mitogenesis,
(2) can serve as a ligand for inducible receptors that will also bind
rIL-2 and an FI-mouse anti-human p55 antibody, and (3) will regulate
the expression these receptors. (C) 1994 Academic Press, Inc.