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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Effect of in vivo administration of prostaglandins and interferon on natural killer activity and on B-16 melanoma growth in mice.

We investigated the effect on in vivo administration of 16,16-dimethyl-prostaglandin E2 (di-M-PGE2) alone and in combined treatment with alpha-beta interferon (IFN) on NK activity in normal, cyclophosphamide (CY)-treated, tumor bearing or irradiated and bone marrow reconstituted mice and on B-16 melanoma growth. Normal mice inoculated with IFN (30,000 U/mouse, 24 hr before testing) showed a significant increase in NK activity, while those treated with di-M-PGE2 (10 micrograms/mouse daily X 4 days) showed a suppressed NK response. No difference was observed between mice treated with di-M-PGE2 alone and those treated with di-M-PGE2 associated with IFN. In immunosuppressed animals single treatments were slightly (di-M-PGE2) or not (IFN) effective, while the combined administration of di-M-PGE2 and IFN caused a marked increase in NK activity. Moreover, di-M-PGE2 was able to accelerate the recovery rate of NK activity in bone marrow-reconstituted murine chimeras, suggesting that the synergistic effect of prostaglandins and IFN could derive from the action of di-M-PGE2 on progenitor pre-NK cells and of IFN on effector cells. Finally, we observed a good correlation between the enhancement of the NK activity and the tumor growth inhibition.[1]

References

  1. Effect of in vivo administration of prostaglandins and interferon on natural killer activity and on B-16 melanoma growth in mice. Garaci, E., Mastino, A., Jezzi, T., Riccardi, C., Favalli, C. Cell. Immunol. (1987) [Pubmed]
 
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