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Effect of auranofin on antibody-dependent cellular cytotoxicity (ADCC) mediated by rat peripheral blood polymorphonuclear leukocytes and mononuclear cells

Abstract

Auranofin and other clinically used gold compounds were evaluated in vitro for effects on antibody-dependent cellular cytotoxicity (ADCC)of L929 fibroblast target cells mediated by adjuvant rat peripheral blood PMNs or mononuclear cells. Auranofin (10ΜM) was found to be a potent inhibitor of PMNADCC. In contrast, gold sodium thiomalate (10–100ΜM), gold thioglucose (10–1000ΜM, and nongold substructures of auranofin (10ΜM) were not inhibitory. In continuous culture, gold sodium thiomalate and relatively low concentrations of auranofin (≤1 ΜM) significantly enhanced PMNADCC. Results of pretreatment studies indicate that auranofin's inhibitory activity of PMNADCC is caused by a noncytotoxic effect on PMN function which is not associated with alteration of PMN-target cell contact. In contrast to its inhibitory activity on PMNADCC, auranofin pretreatment of mononuclear cells resulted in enhanced target cell destruction which appeared to correlate with increased mononuclear cell-target cell contact.

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SK&F D-39162 (2,3,4,6-tetra-O-acetyl-l-thio-Β-d-glucopyranosato-S)triethylphosphine gold.

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DiMartino, M.J., Walz, D.T. Effect of auranofin on antibody-dependent cellular cytotoxicity (ADCC) mediated by rat peripheral blood polymorphonuclear leukocytes and mononuclear cells. Inflammation 4, 279–288 (1980). https://doi.org/10.1007/BF00915029

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  • DOI: https://doi.org/10.1007/BF00915029

Keywords

  • Mononuclear Cell
  • Cell Contact
  • Polymorphonuclear Leukocyte
  • Auranofin
  • Cell Destruction