{'fraction_non_alphanumeric': 0.013477088948787063, 'fraction_numerical': 0.0, 'mean_word_length': 5.575221238938053, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Anti-cancer activity of anthracycline antibiotics and DNA condensation.

Light scattering techniques were used to investigate the ability of a number of anthracyclines to cause compaction in double-stranded DNA and nucleosomes at physiological ionic strength. The structurally organized polynucleotide was efficiently condensed by all of the drugs examined, while no appreciable aggregation of free double-stranded DNA is observed under the same experimental conditions. A model for the process is proposed. Our results suggest the lack of a direct relationship between the critical concentration of free drug at which condensation of DNA occurs and the cytotoxic and anti-cancer properties exhibited by the various anthracycline derivatives.