ArticleNucleic acids research2017
Monomolecular G-quadruplex structures with inversion of polarity sites: new topologies and potentiality.
Article in Nucleic acids research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Physicochemical and antiproliferative characteristics of RNA and DNA sequence-related G-quadruplexes.ACS medicinal chemistry letters · 2023Article
- Covalent Bi-Modular Parallel and Antiparallel G-Quadruplex DNA Nanocostructs Reduce Viability of Patient Glioma Primary Cell Cultures.International journal of molecular sciences · 2021Article
- Endogenous and artificial miRNAs explore a rich variety of conformations: a potential relationship between secondary structure and biological functionality.Scientific reports · 2020Article
- Review
- In What Ways Do Synthetic Nucleotides and Natural Base Lesions Alter the Structural Stability of G-Quadruplex Nucleic Acids?Journal of nucleic acids · 2017Review
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7 authors.
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Abstract
In this paper, we report investigations, based on circular dichroism, nuclear magnetic resonance spectroscopy and electrophoresis methods, on three oligonucleotide sequences, each containing one 3'-3' and two 5'-5' inversion of polarity sites, and four G-runs with a variable number of residues, namely two, three and four (mTG2T, mTG3T and mTG4T with sequence 3'-TGnT-5'-5'-TGnT-3'-3'-TGnT-5'-5'-TGnT-3' in which n = 2, 3 and 4, respectively), in comparison with their canonical counterparts (TGnT)4 (n = 2, 3 and 4). Oligonucleotides mTG3T and mTG4T have been proven to form very stable unprecedented monomolecular parallel G-quadruplex structures, characterized by three side loops containing the inversion of polarity sites. Both G-quadruplexes have shown an all-syn G-tetrad, while the other guanosines adopt anti glycosidic conformations. All oligonucleotides investigated have shown a noteworthy antiproliferative activity against lung cancer cell line Calu 6 and colorectal cancer cell line HCT-116 p53-/-. Interestingly, mTG3T and mTG4T have proven to be mostly resistant to nucleases in a fetal bovine serum assay. The whole of the data suggest the involvement of specific pathways and targets for the biological activity.
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