Induction of macrophage procoagulant expression by cisplatin, daunorubicin and doxorubicin

✍ Scribed by Helen R. Wheeler; Carolyn L. Geczy

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: French
• Weight: 724 KB
• Volume: 46
• Category: Article
• ISSN: 0020-7136
• DOI: 10.1002/ijc.2910460413

✦ Synopsis

Cisplatin, doxorubicin and daunorubicin (drugs which intercalate with DNA) influenced the membrane-bound procoagulant potential of murine thioglycollate-induced peritoneal exudate (TG-PEC) macrophages and the monocytoid cell line WEHl 265, whereas the antimetabolites 5-fluorouracil and methotrexate had no effect. Enhanced procoagulant was not caused by non-specific toxicity of these agents. Cisplatin directly increased the procoagulant expressed on WEHl 265 cells, whereas MPCA on TG-PEC was enhanced only when cisplatin was combined with a second stimulant, either bacterial lipopolysaccharide (LPS) or interferon (IFNy). WEHl 262 cells failed to respond to the anthracycline drugs, either alone or in combination with LPS, whereas they enhanced the IFNy response. Doxorubicin and daunorubicin increased the LPS response of TG-PEC by approximately 4-fold and the IFNy response by approximately I 0-fold. Pulsing experiments suggested that the anthracyclines enhanced procoagulant expression by a mechanism different from cisplatin. Daunorubicin primed TG-PEC within 4 hr to respond to low levels of LPS, whereas either LPS or cisplatin primed these cells to respond to cisplatin or LPS respectively. Furthermore, the procoagulant expressed by TG-PEC stimulated by LPS/ cisplatin had properties of tissue factor (TF: 50% total activity) and Factor Vlla (50% total procoagulant)-like activities, whereas the predominant procoagulant on LPS/anthracycline activated TG-PEC was TF-like (70% total activity) with weak Factor Vlla and prothrombinase-like properties. 3To whom correspondence and reprint requests should be addressed.