Abstract：
:Actinomycin D produces changes in the cell cycle kinetics of Chinese hamster (HA1) and mouse mammary tumor cells (EMT6) cultivated in vitro. There was a reduced rate of progression of the cells through S phase and a G2 arrest, the duration and degree of which were drug dose dependent. The lethal effects of the drug on the two cell lines were comparable. At the molecular level, DNA single-strand breaks (true breaks and/or alkali-labile bonds) appear initially. After drug removal, the extent of disappearance of these DNA strand breaks was drug dose dependent. Similar results were obtained for the two cell lines. However, at the lower drug concentration (0.1 mug/ml), although the DNA strand breaks appeared to disappear after drug free incubation, about 60% of this cell population was not viable.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Roots R,Smith KCsubject
Has Abstractpub_date
1976-10-01 00:00:00pages
3654-8issue
10eissn
0008-5472issn
1538-7445journal_volume
36pub_type
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