The Journal of Experimental Medicine
StemCell Technologies
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Journal of Experimental Medicine, Vol 168, 1271-1291, Copyright © 1988 by Rockefeller University Press

ARTICLES

Antibody to mouse interferon alpha/beta abrogates resistance to the multiplication of Friend erythroleukemia cells in the livers of allogeneic mice

I Gresser, C Maury, F Vignaux, O Haller, F Belardelli and MG Tovey
Laboratory of Viral Oncology, Groupe de Laboratoires de l'Institut de Recherches, Scientifiques sur le Cancer, Villejuif, France.

Friend erythroleukemia cells (FLC) (H-2d) injected intravenously into adult syngeneic DBA/2 or allogeneic C57B1/6 (H-2b) or C3H (H-2k) mice lodge in the liver but only multiply in the liver of syngeneic mice. Our results indicated that endogenous IFN-alpha/beta was a crucial factor in preventing the multiplication of FLC in the liver of adult allogeneic mice. (a) Treatment of allogeneic adult C57B1/6 or C3H mice with polyclonal antibody to mouse IFN-alpha/beta (but not antibody to IFN-gamma) completely abrogated the resistance to the multiplication of FLC in the liver and 87% of tumor-injected, antibody-treated C57B1/6 mice died with extensive tumor involvement of the liver. In contrast, after intravenous inoculation FLC do not multiply at all (or very rarely) in the liver of adult C57B1/6 mice left untreated or treated with a variety of control globulins, and no deaths occurred. (b) 8 h after intravenous inoculation of FLC, poly(A)+ RNA hybridizable with specific DNA probes for mouse IFN-alpha or -beta (but not -gamma) was present in the liver of injected C57B1/6 mice. Using the expression of the Mx protein as an indicator of the presence of IFN-alpha/beta, we showed that Mx+ congenic C57B1/6 mice injected with FLC exhibited a marked increase in the expression of the Mx protein in the liver, spleen, kidney and lung, and this increase was blocked by treatment of mice with antibody to IFN-alpha/beta. The possibility that different host mechanisms are elicited depending on the site of tumor growth in allogeneic mice is discussed. IFN-alpha/beta appears to be of particular importance in determining the resistance of the liver to FLC in allogeneic mice.
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