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Exploring the potential of environment friendly silver nanoparticles for DNA interaction: Physicochemical approach
Komal1, Sonia1, Shrikant Kukreti2
1Nano-Bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India.
Silver nanoparticles (AgNPs) synthesized using plant extract interact with DNA. These interactions, primarily groove binding, destabilize DNA, suggesting potential biomedical applications.
Area of Science:
- Nanotechnology
- Biochemistry
- Materials Science
Background:
- Nanosilver (AgNPs) exhibits significant biomedical potential.
- Understanding nanoparticle-DNA interactions is crucial for assessing safety and applications.
Purpose of the Study:
- To synthesize and characterize spherical silver nanoparticles (AgNPs) using Epipremnum aureum leaf extract.
- To investigate the interaction mechanism between AgNPs and Calf thymus DNA (CT-DNA).
Main Methods:
- AgNP synthesis and characterization via UV-Visible spectroscopy, TEM, HR-XRD, and DLS.
- Spectroscopic analysis of AgNP-CT-DNA interactions, including UV-Visible, UV-thermal melting, Circular Dichroism, and fluorescence spectroscopy.
Main Results:
- AgNPs were successfully synthesized and characterized.
- Fluorescence studies indicated van der Waals and H-bonding interactions between AgNPs and CT-DNA.
- Circular Dichroism and thermal melting studies suggested groove binding and destabilization of the DNA duplex.
Conclusions:
- AgNPs interact with CT-DNA via groove binding, leading to DNA destabilization.
- The findings suggest AgNPs can act as unusual DNA binders with potential for biomedical applications.
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