Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.1002/chem.202104481
Ключевые слова: aptamers, fragment molecular orbitals method, molecular dynamics, sars-cov-2, saxs
Аннотация: Aptamer selection against novel infections is a complicated and time-consuming approach. Synergy can be achieved by using computational methods together with experimental procedures. This study aims to develop a reliable methodology for a rational aptamer in silico et vitro design. The new approach combines multiple steps: (1) MoleПоказать полностьюcular design, based on screening in a DNA aptamer library and directed mutagenesis to fit the protein tertiary structure; (2) 3D molecular modeling of the target; (3) Molecular docking of an aptamer with the protein; (4) Molecular dynamics (MD) simulations of the complexes; (5) Quantum-mechanical (QM) evaluation of the interactions between aptamer and target with further analysis; (6) Experimental verification at each cycle for structure and binding affinity by using small-angle X-ray scattering, cytometry, and fluorescence polarization. By using a new iterative design procedure, structure- and interaction-based drug design (SIBDD), a highly specific aptamer to the receptor-binding domain of the SARS-CoV-2 spike protein, was developed and validated. The SIBDD approach enhances speed of the high-affinity aptamers development from scratch, using a target protein structure. The method could be used to improve existing aptamers for stronger binding. This approach brings to an advanced level the development of novel affinity probes, functional nucleic acids. It offers a blueprint for the straightforward design of targeting molecules for new pathogen agents and emerging variants. © 2022 Wiley-VCH GmbH.
Журнал: Chemistry - A European Journal
Выпуск журнала: Vol. 28, Is. 12
Номера страниц: 202104481
ISSN журнала: 09476539
Издатель: John Wiley and Sons Inc