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Cytolytic T-lymphocyte (CTL) activity specific for respiratory syncytial (RS) virus was investigated after intranasal infection of mice with RS virus, after intraperitoneal infection of mice with a recombinant vaccinia virus expressing the F glycoprotein, and after intramuscular vaccination of mice with Formalin-inactivated RS virus or a chimeric(More)
Immunofluorescence was used to characterize the lymphocyte subpopulations of mice treated with six immunomodulatory drugs: hydrocortisone acetate (HCA), corticosterone acetate (corticosterone), cyclophosphamide, cytosine arabinoside (Ara-C), 15(S)-methyl prostaglandin E1 (15(S)-methyl PGE1), and 2-amino-5-bromo-6-phenyl-4-(3H)-pyrimidinone (ABPP). The(More)
CC-1065 is the most potent antitumor agent tested in our laboratory. It is lethal to B16 and CHO cells and to a variety of human tumors in the clonogenic assay at 1 ng/ml and is effective against L1210 leukemia and B16 melanoma in vivo at 1 to 50 micrograms/kg. CC-1065 inhibits DNA synthesis and binds to DNA in a nonintercalative manner in the minor groove.(More)
Mutations in the dystrophin gene are responsible for Duchenne and Becker muscular dystrophy (DMD/BMD). Studies of dystrophin expression and function have benefited from use of the mdx mouse, an animal model for DMD/BMD. Here we characterized mutations in three additional strains of mdx mice, the mdx2cv, mdx4cv and mdx5cv alleles. The mutation in the mdx2cv(More)
The effect of 7-con-O-methylnogarol (7-OMEN) on the survival of exponentially growing and plateau-phase Chinese hamster ovary cells was determined in a cloning assay. After 2 hr of exposure, the 50% lethal dose for exponential and plateau-phase cells was 0.3 and 1.5 microgram/ml, respectively. Drug doses for cell progression studies were based upon drug(More)
Adozelesin (U-73975) is an extremely potent cytotoxic agent which causes 90% lethality, after 2 h exposure in vitro, of Chinese hamster ovary and lung (CHO and V79), mouse melanoma (B16), and human ovarian carcinoma (A2780) cells at 0.33, 0.19, 0.2, and 0.025 ng/ml, respectively. Under similar conditions, Adriamycin and cisplatin had 90% lethality values in(More)
Adozelesin is a highly potent alkylating agent which has entered clinical trials based on its unique mechanisms of action and broad-spectrum antitumor activity in vivo. V79 cells resistant to adozelesin (V79/AdoR) were not resistant to the alkylating agent cisplatin but showed the phenotypic and genotypic characteristics of multidrug resistance. Thus(More)
Didemnins are a new class of cyclic depsipeptides in which didemnin A is the major component, didemnin B the minor component, and a trace of didemnin C is present. Didemnin B was more potent than was didemnin A against B16 melanoma and P388 leukemia in vivo, and B was also approximately 20 times more cytotoxic than was didemnin A in vitro. Therefore,(More)
Our interest in prostaglandins (PGs) as antitumor agents stemmed from the report of Bregman and Meyskens (Cancer Res., 43: 1642-1645, 1983) that PGA1, PGA2, and PGD2 inhibited colony formation by human melanoma cells obtained from fresh biopsies of melanoma patients. We tested several PGs and found that PGA1, PGA2, and PGD2 were the most cytotoxic to L1210(More)