scholarly journals Epirubicin-calf thymus DNA interaction: a comprehensive investigation using molecular docking, spectroscopy and fluorescent quantum dots

2018 ◽  
Vol 64 (7) ◽  
pp. 1
Author(s):  
Abbas Hemati Azandaryani ◽  
Ali Barati ◽  
Mohsen Shahlaei ◽  
Mojtaba Shamsipur ◽  
Sajad Moradi ◽  
...  
2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Shiva Mehran ◽  
Yousef Rasmi ◽  
Hamid Reza Karamdel ◽  
Ramin Hossinzadeh ◽  
Zafar Gholinejad

Introduction. Wortmannin (WTN) is a steroid metabolite that inhibits phosphatidylinositol 3-kinase and other signaling pathways. Structurally, the WTN consists of a cyclopentanophenanthrene-like structure with several oxygen-rich moieties which have the potential to interact with deoxyribonucleic acid (DNA) molecules. Methods. We aim to evaluate the WTN and calf thymus DNA (ct-DNA) interaction with molecular docking using the AutoDock 4.2 software. UV and fluorescence spectroscopy and viscosity techniques were performed to confirm the in silico analysis. Results. Molecular docking showed that the WTN interacted with ct-DNA via hydrogen bonds at guanine-rich sequences. The number of hydrogen bonds between the WTN and DNA was 1-2 bonds (average 1.2) per WTN molecule. The in silico binding constant was 2 × 103 M−1. UV spectroscopy showed that the WTN induced a hyperchromic feature without wavelength shifting. The WTN and DNA interaction led to quenching of DNA-emitted fluorescence. The different concentrations of WTN had no effect on DNA viscosity. Taken together, our results demonstrated WTN interacts with DNA in the nonintercalating mode, which is considered as a new mechanism of action. Conclusion. These results suggest that the WTN may exert its biological effects, at least in part, via interaction with DNA.


Author(s):  
Cleiton M. da Silva ◽  
Marina M. Silva ◽  
Fabiano S. Reis ◽  
Ana Lúcia T.G. Ruiz ◽  
João E. de Carvalho ◽  
...  

RSC Advances ◽  
2014 ◽  
Vol 4 (108) ◽  
pp. 63549-63558 ◽  
Author(s):  
Saptarshi Ghosh ◽  
Pronab Kundu ◽  
Bijan Kumar Paul ◽  
Nitin Chattopadhyay

Binding mode of biologically relevant anionic probe, ANS, with ctDNA is divulged from spectroscopic and molecular docking studies.


2017 ◽  
Vol 28 (1) ◽  
pp. 195-206 ◽  
Author(s):  
Sadegh Salehzadeh ◽  
Farshid Hajibabaei ◽  
Neda Hosseinpour Moghadam ◽  
Samira Sharifinia ◽  
Sadegh Khazalpour ◽  
...  

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