Pentoxifylline as a modulator of anticancer drug doxorubicin. Part I: Reduction of doxorubicin DNA binding
Grzegorz Gołuński , Agnieszka Borowik , Dariusz Wyrzykowski , Anna Woziwodzka , Jacek Piosik
AbstractPentoxifylline – biologically active aromatic compound – has a well established capability to sequester aromatic ligands, such as an anticancer drug – doxorubicin – in mixed stacking aggregates. Formation of such hetero-complexes may influence biological activity of secluded drug. Presented work shows assessment of pentoxifylline influence on doxorubicin direct interactions with DNA employing biophysical methods. Achievement of this goal required statistical-thermodynamical model allowing numerical four-parameter analysis of experimental mixture – an issue that was successfully tackled by merging McGhee – von Hippel and Kapuscinski – Kimmel models. Results obtained with new model are well in agreement with data obtained with separate experiments with each of these two models and show reduction of doxorubicin in free (monomeric, dimeric) and complexed with DNA forms in favor of doxorubicin-pentoxifylline complexes with increasing pentoxifylline concentration. Developed model appears to be a universal tool allowing numerical analysis of mixtures containing self-aggregating ligand, DNA, and modulating agent.
|Journal series||Chemico-Biological Interactions, ISSN 0009-2797|
|Publication size in sheets||0.5|
|Keywords in English||stacking complexes, de-intercalation, hetero-aggregation|
|Score|| = 25.0, 20-12-2017, ArticleFromJournal|
= 30.0, 20-12-2017, ArticleFromJournal
|Publication indicators||: 2015 = 2.618 (2) - 2015=2.935 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.