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• W2050574427 endingPage "345" @default.
• W2050574427 startingPage "335" @default.
• W2050574427 abstract "The energy of interaction of antiestrogenic ligands bound to DNA derived from molecular modeling was compared to the capacity of the ligands to directly inhibit the transcriptional activity of an estrogen responsive gene. 3-Phenylacetylamino-2,6-piperidinedione (A10) and related compounds were intercalated into a partially unwound DNA site in a canonical estrogen response element (ERE). The piperidinedione/ERE complexes were subjected to energy minimization and the strength of interaction of the ligands with the DNA was measured. The ability of the ligands to inhibit transactivation was assessed using a reporter gene constructed with the ERE of the vitellogenin gene promoter (ERE(v)-tk-Luc) transiently transfected into the human estrogen receptor-positive MCF-7 breast cancer cell line. The results demonstrate a direct correlation between the calculated energetic fit of the compounds in the ERE and inhibition of ERE(v) transactivation. The order of potency of the compounds to suppress estrogen-dependent reporter gene activity was identical to that previously shown for inhibiting the growth of MCF-7 cells. To our knowledge, these results provide the first direct experimental evidence that the predicted fit of a class of compounds into a defined DNA binding site correlates with the ability of the compounds to modulate specific gene functions regulated at that site." @default.
• W2050574427 created "2016-06-24" @default.
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• W2050574427 date "2005-09-01" @default.
• W2050574427 modified "2023-09-27" @default.
• W2050574427 title "Transcriptional inhibition of the estrogen response element by antiestrogenic piperidinediones correlates with intercalation into DNA measured by energy calculations" @default.
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• W2050574427 doi "https://doi.org/10.1016/j.jsbmb.2005.04.040" @default.
• W2050574427 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16054810" @default.
• W2050574427 hasPublicationYear "2005" @default.
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