Prolonged islet allograft acceptance in the absence of interleukin 4 expression

Transpl Immunol. 1996 Mar;4(1):81-5. doi: 10.1016/s0966-3274(96)80043-8.


Murine CTLA4/Fc therapy leads to permanent engraftment of islet allografts in interleukin 4 (IL-4) knockout (IL-4-/- mice. Interestingly, IL-4+/- hosts were more resistant to tolerance induction than IL-4-/- mice. An IL-2/Fc fusion protein abrogates the effect of CTLA4/Fc therapy while an IL-4/Fc fusion protein tends to inhibit rather than enhance the effect of CTLA/Fc treatment in IL-4-/- recipients. We conclude that allograft acceptance requires principally a blockade of T cell activation rather than 'immune deviation' of the T cell activation program to Th2 cytokines (i.e. IL-4).

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Cell Line
  • Cricetinae
  • Interleukin-4 / physiology*
  • Islets of Langerhans Transplantation*
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Mice, Inbred DBA
  • Rats
  • Transfection


  • Interleukin-4