Add time:08/13/2019         Source:sciencedirect.com

The Ebola and Marburg viruses are some of the deadliest viruses in the world. In this study a series of G-rich DNA sequences derived from these types of viruses which possess the potential to form G-quadruplex structures are analyzed. A set of DNA oligonucleotides derived from original viral isolates was used as a representative modeling sequence with which to demonstrate the influence of THIAZOLE ORANGE (cas 107091-89-4) on circular dichroism (CD) spectral profiles. The results show the unique profile of the induced CD (ICD) signal in the visible region caused by interactions between the ligand and G-quadruplexes. This ligand was found to stabilize the G-quadruplex structure and can also induce topological changes and facilitate G-quadruplex multimerization. Thus, the ICD signatures can be used to determine whether specific unknown sequences can form G-quadruplex motifs. The viral sequences were analyzed using standard spectral and electrophoretic methods. In addition, the ability to target G-quadruplexes located in filoviruses offers researchers attractive therapeutic targets which would be of particular use in the development of novel antiviral therapies. This article is part of a Special Issue entitled "G-quadruplex" Guest Editor: Dr. Concetta Giancola and Dr. Daniela Montesarchio.

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