Cyclosporin A corrects daunorubicin resistance in Ehrlich ascites carcinoma.
Cyclosporin A corrects daunorubicin resistance in Ehrlich ascites carcinoma.
复制标题
环孢素 A 可以纠正艾利希腹水癌中的柔红霉素耐药性。
作者:
L. Slater;P. Sweet;M. Stupecky;M. Wetzel;S. Gupta
We have previously developed a daunorubicin resistant subline of Ehrlich ascites carcinoma (EA/DR) for studies on the reversal of daunorubicin resistance. The mean survival of untreated BALB/c mice bearing drug sensitive parental tumour (EA/DS) is 18.4 +/- 0.6 days, mice bearing EA/DS treated with five daily doses of 0.3 mg kg-1 daunorubicin greater than 60 days, and mice bearing EA/DR treated with the same daunorubicin regimen, 21.1 +/- 1.4 days. We now report complete reversal of daunorubicin resistance in EA/DR by cyclosporin A (CsA). The in vitro daunorubicin IC50, defined as that concentration of daunorubicin required to inhibit 50% of DNA synthesis, in EA/DR was 6.7 +/- 1.15 micrograms ml-1 compared to 2.8 +/- 0.72 micrograms ml-1 in EA/DS. This value was reduced to 2.8 +/- 0.52 and 2.1 +/- 0.10 micrograms ml-1 daunorubicin by 3.3 and 13.2 micrograms ml-1 CsA respectively, P less than 0.05. The MST of groups of host mice bearing EA/DR either untreated, treated with five daily doses of 0.3 mg kg-1 daunorubicin, treated with 80 mg kg-1 CsA in five divided daily doses or treated with combined daunorubicin-CsA were 19.0 +/- 1.0, 21.1 +/- 1.4, 24.0 +/- 2.6 and greater than 60 days respectively. The mean survival of groups of host mice bearing EA/DR treated with 5 mg kg-1 or 10 mg kg-1 CsA simultaneously with daunorubicin for five days was also greater than 60 days. These differences are highly significant.
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DOI:
--
发表时间:
1983
期刊:
Cancer treatment reports
影响因子:
--
作者:
Beck,WT
通讯作者:
Beck,WT
影响因子:
11.2
作者:
Kessel,D;Wilberding,C
通讯作者:
Wilberding,C
影响因子:
9.7
作者:
Kessel,D;Corbett,T
通讯作者:
Corbett,T
DOI:
--
发表时间:
1985
期刊:
Cancer treatment reports
影响因子:
--
作者:
Kessel,D;Wilberding,C
通讯作者:
Wilberding,C