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IL-2-based immunotherapy alters circulating neutrophil Fc receptor expression and chemotaxis.

D Jablons, E Bolton, S Mertins, M Rubin, P Pizzo, S A Rosenberg and M T Lotze
J Immunol May 1, 1990, 144 (9) 3630-3636;
D Jablons
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E Bolton
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S Mertins
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M Rubin
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P Pizzo
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S A Rosenberg
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M T Lotze
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Abstract

We performed functional assays on polymorphonuclear (PMN) leukocytes from 21 patients with advanced cancers, before, during, and after IL-2 administration. Of these, 19 were treated with high dose bolus IL-2 infusions (10(5) U/kg every 8 h) and 2 patients received low dose continuous infusions of IL-2 (250 U/kg/h). Five of six patients studied after IL-2 therapy had a decrease in their PMN chemotactic response to FMLP after bolus IL-2 (mean 8 doses) or, after the 4th day of continuous infusion IL-2 (pre-IL-2 values of 82% +/- 17% to 45% +/- 1% post-IL-2, p2 less than 0.004) compared with normal control values. In 8 of 10 patients studied, PMN capacity to oxidize intracellular dichlorofluorescein dye, an indirect measurement of O2- production in response to PMA stimulation, decreased after IL-2 administration (pre-IL-2 mean dichlorofluorescein oxidation (by channel number) 243 +/- 128 vs 3-day post-IL-2 87 +/- 86, p2 less than 0.02). Furthermore, a marked decrease in Fc gamma R III (Leu-11, CD16) expression was observed in 12/13 patients' PMN studied after IL-2 therapy (mean percent of PMN population with positive FcR expression was 81.1 +/- 15.4% pre-IL-2 which decreased to 56.0 +/- 30.5% post-IL-2, p2 less than 0.001). Other PMN surface markers (My4, My7, ICAM-1, LFA1, LFA3, Mac1) did not change significantly. PMN-mediated antibody-dependent cellular cytotoxicity did not change after IL-2 therapy (only 4/15 patients demonstrated more than 50% reduction in antibody-dependent cellular cytotoxicity). PMN phagocytosis of Staphylococcus aureus was also not significantly altered by IL-2 administration in six patients studied (pre-IL-2, 99 +/- 17% vs 111 +/- 28% post-IL-2, p2 greater than 0.2). We conclude that the systemic administration of IL-2 by intermittent or continuous administration is associated with marked changes in PMN function and cell surface receptor expression. These alterations may contribute to the apparent increased susceptibility to bacterial infection observed in these patients.

  • Copyright © 1990 by American Association of Immunologists

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The Journal of Immunology
Vol. 144, Issue 9
1 May 1990
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IL-2-based immunotherapy alters circulating neutrophil Fc receptor expression and chemotaxis.
D Jablons, E Bolton, S Mertins, M Rubin, P Pizzo, S A Rosenberg, M T Lotze
The Journal of Immunology May 1, 1990, 144 (9) 3630-3636;

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IL-2-based immunotherapy alters circulating neutrophil Fc receptor expression and chemotaxis.
D Jablons, E Bolton, S Mertins, M Rubin, P Pizzo, S A Rosenberg, M T Lotze
The Journal of Immunology May 1, 1990, 144 (9) 3630-3636;
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Print ISSN 0022-1767        Online ISSN 1550-6606