An antineoplastic oligosaccharide anthracycline antineoplastic antibiotic isolated from the bacterium Actinosporangium bohemicum. Marcellomycin intercalates into DNA and induces DNA crosslinks, thereby inhibiting DNA replication and repair and RNA and protein synthesis. This agent also induces differentiation in HL-60 promyelocytic leukemia cells by interfering with glycoprotein synthesis.
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