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- W1997243335 abstract "Isothermal calorimetry (ITC) is efficient in characterizing and recognizing both high affinity and low affinity intermolecular interactions quickly and accurately. Adriamycin (ADR) and daunomycin (DNM) are the two anticancer drugs whose activity is achieved mainly by intercalation with DNA. During chemotherapy, normal human genomic DNA and mutated DNA from K562 leukemic cells show different thermodynamic properties and binding affinities on interaction with ADR and DNM when followed by ITC. Normal DNA shows more than one step in kinetic analysis, which could be attributed to outside binding, intercalation and reshuffling as suggested by Chaires et al. (1985); whereas K562 DNA fits a different binding pattern with higher binding affinities (by one order or more) compared to normal DNA. Structural properties of the interaction were followed by laser Raman spectroscopy, where difference in structure was apparent from the shifts in marker B DNA Raman bands (Ling et al., 2005). A correlation of thermodynamic contribution and structural data reveals step wise changes in normal genomic DNA conformation on drug binding. The overall structural change is higher in normal DNA–DNM interaction suggesting a partial B to A transition on drug binding. Such large changes were not observed for K562 DNA–DNM interaction which showed B to A transition properties in native from itself corroborating with our earlier findings (Ghosh et al., 2012)." @default.
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- W1997243335 date "2013-01-01" @default.
- W1997243335 modified "2023-10-16" @default.
- W1997243335 title "121 Influence of changes in DNA conformation on thermodynamic contribution during interaction of human genomic DNA and its mutant with anticancer drugs" @default.
- W1997243335 cites W2089839350 @default.
- W1997243335 doi "https://doi.org/10.1080/07391102.2013.786363" @default.
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