Elucidation of binding interactions and mechanism of Fludarabine with dsDNA via multispectroscopic and molecular docking studies

Pelin Şenel, Soykan Agar, V. Oyku Sayin, Filiz Altay, Mine Yurtsever*, Ayşegül Gölcü

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Fludarabine is a purine derivative, anti-neoplastic drug and is still being used in the treatments of chronic lymphocytic leukemia, small lymphocytic lymphoma, acute myeloid leukemia, Non-Hodgkin's lymphoma. It achieves its function by interacting with DNA. Therefore, the binding interactions of such drugs with deoxyribonucleic acid (DNA) is an important subject for pharmaceutical and biochemical studies aiming at designing better DNA binding drugs. Although DNA binding mode of some of the anti-neoplastic drugs has been studied, DNA interaction of Fludarabine has not been explored yet. For this reason, this work has been dedicated to deciphering the experimental and theoretical investigation of Fludarabine binding mechanism via multispectroscopic techniques including UV absorption spectroscopy, thermal denaturation, fluorescence and FTIR spectroscopy, electrochemical and viscosity measurement methods as well as with molecular docking studies under physiological conditions. We observed in the lowest energy docking poses that Fludarabine binds to DNA via major groove binding mode. The nonplanar and extended structure and hydrogen bonding interactions of Fludarabine with the Adenine-Thymine base-pair played a very decisive role in the binding mode as supported by the experimental results.

Original languageEnglish
Article number112994
JournalJournal of Pharmaceutical and Biomedical Analysis
Publication statusPublished - 5 Feb 2020

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.


The authors would like to thank the support of the grant of Istanbul Technical University (Scientific Research Projects Unit) under TGA-2017-40917 project.

FundersFunder number
Istanbul Teknik ÜniversitesiTGA-2017-40917


    • Double strain deoxyribonucleic acid (dsDNA)
    • Fludarabine
    • Molecular docking
    • Spectroscopy
    • Voltammetry


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