TY - JOUR
T1 - Enhancement of natural killer cytotoxicity by cis-diamminedichloroplatinum(II) in vivo and in vitro
AU - Lichtenstein, A. K.
AU - Pende, D.
PY - 1986
Y1 - 1986
N2 - To investigate the immunomodulating properties of cis-diamminedichloroplatinum(II) (CDDP), we studied the drug's effects on natural killer (NK) lymphocyte cytotoxicity, i.p. injections of CDDP (2-6 mg/kg) into adult mice significantly enhanced cytolysis of YAC-1 and K562 targets mediated by peritoneal and spleen cells. Lysis of the NK-resistant targets P815, EL-4, MOT, and RAJI was not increased, nor was the lysis of a YAC variant which had been specifically rendered resistant to NK lysis. Activated cytotoxicity was first noted 24 h after injection and returned to baseline by 7 days. Although i.p. injection enhanced peritoneal and spleen cell lysis, i.v. injection only activated spleen cells. Two analogues of CDDP, carbo- and iproplatin, effectively enhanced NK activity, but transplatin had no effect. Activated effector cells were non-adherent to nylon wool and serum-coated plates; they co-separated with lymphocytes on Percoll gradients, and they expressed asialo GM1 determinants. Incubation of targets with CDDP for 1 or 18 h significantly increased their sensitivity to lysis by normal murine spleen cells. These data indicate that CDDP has potent effects on NK cytotoxicity.
AB - To investigate the immunomodulating properties of cis-diamminedichloroplatinum(II) (CDDP), we studied the drug's effects on natural killer (NK) lymphocyte cytotoxicity, i.p. injections of CDDP (2-6 mg/kg) into adult mice significantly enhanced cytolysis of YAC-1 and K562 targets mediated by peritoneal and spleen cells. Lysis of the NK-resistant targets P815, EL-4, MOT, and RAJI was not increased, nor was the lysis of a YAC variant which had been specifically rendered resistant to NK lysis. Activated cytotoxicity was first noted 24 h after injection and returned to baseline by 7 days. Although i.p. injection enhanced peritoneal and spleen cell lysis, i.v. injection only activated spleen cells. Two analogues of CDDP, carbo- and iproplatin, effectively enhanced NK activity, but transplatin had no effect. Activated effector cells were non-adherent to nylon wool and serum-coated plates; they co-separated with lymphocytes on Percoll gradients, and they expressed asialo GM1 determinants. Incubation of targets with CDDP for 1 or 18 h significantly increased their sensitivity to lysis by normal murine spleen cells. These data indicate that CDDP has potent effects on NK cytotoxicity.
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M3 - Article
C2 - 3940633
AN - SCOPUS:0022640565
VL - 46
SP - 639
EP - 644
JO - Journal of Cancer Research
JF - Journal of Cancer Research
SN - 0008-5472
IS - 2
ER -