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Hajjafari A, Sadr S, Rahdar A, Bayat M, Lotfalizadeh N, Dianaty S, Rezaei A, Moghaddam SP, Hajjafari K, Simab PA, Kharaba Z, Borji H, Pandey S. Exploring the integration of nanotechnology in the development and application of biosensors for enhanced detection and monitoring of colorectal cancer. INORG CHEM COMMUN 2024; 164:112409. [DOI: 10.1016/j.inoche.2024.112409] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2024]
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Sodomaco S, Gómez S, Giovannini T, Cappelli C. Computational Insights into the Adsorption of Ligands on Gold Nanosurfaces. J Phys Chem A 2023; 127:10282-10294. [PMID: 37993110 DOI: 10.1021/acs.jpca.3c05560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
We study the adsorption process of model peptides, nucleobases, and selected standard ligands on gold through the development of a computational protocol based on fully atomistic classical molecular dynamics (MD) simulations combined with umbrella sampling techniques. The specific features of the interface components, namely, the molecule, the metallic substrate, and the solvent, are taken into account through different combinations of force fields (FFs), which are found to strongly affect the results, especially changing absolute and relative adsorption free energies and trends. Overall, noncovalent interactions drive the process along the adsorption pathways. Our findings also show that a suitable choice of the FF combinations can shed light on the affinity, position, orientation, and dynamic fluctuations of the target molecule with respect to the surface. The proposed protocol may help the understanding of the adsorption process at the microscopic level and may drive the in-silico design of biosensors for detection purposes.
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Affiliation(s)
- Sveva Sodomaco
- Scuola Normale Superiore, Classe di Scienze, Piazza dei Cavalieri 7, 56126 Pisa, Italy
| | - Sara Gómez
- Scuola Normale Superiore, Classe di Scienze, Piazza dei Cavalieri 7, 56126 Pisa, Italy
| | - Tommaso Giovannini
- Scuola Normale Superiore, Classe di Scienze, Piazza dei Cavalieri 7, 56126 Pisa, Italy
| | - Chiara Cappelli
- Scuola Normale Superiore, Classe di Scienze, Piazza dei Cavalieri 7, 56126 Pisa, Italy
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Barbault F, Brémond E, Rey J, Tufféry P, Maurel F. DockSurf: A Molecular Modeling Software for the Prediction of Protein/Surface Adhesion. J Chem Inf Model 2023; 63:5220-5231. [PMID: 37579187 DOI: 10.1021/acs.jcim.3c00569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
The elucidation of structural interfaces between proteins and inorganic surfaces is a crucial aspect of bionanotechnology development. Despite its significance, the interfacial structures between proteins and metallic surfaces are yet to be fully understood, and the lack of experimental investigation has impeded the development of many devices. To overcome this limitation, we suggest considering the generation of protein/surface structures as a molecular docking problem with a homogenous plan as the target. To this extent, we propose a new software, DockSurf, which aims to quickly propose reliable protein/surface structures. Our approach considers the conformational exploration with Euler's angles, which provide a cartography instead of a unique structure. Interaction energies were derived from quantum mechanics computations for a set of small molecules that describe protein atom types and implemented in a Derjaguin, Landau, Verwey, and Overbeek potential for the consideration of large systems such as proteins. The validation of DockSurf software was conducted with molecular dynamics for corona proteins with gold surfaces and provided enthusiastic results. This software is implemented in the RPBS platform to facilitate widespread access to the scientific community.
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Affiliation(s)
| | - Eric Brémond
- Université Paris Cité, CNRS, ITODYS, F-75013 Paris, France
| | - Julien Rey
- Université Paris Cité, CNRS UMR 8251, INSERM U1133, RPBS, 75205 Paris, France
| | - Pierre Tufféry
- Université Paris Cité, CNRS UMR 8251, INSERM U1133, RPBS, 75205 Paris, France
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Aslan Y, Atabay M, Chowdhury HK, Göktürk I, Saylan Y, Inci F. Aptamer-Based Point-of-Care Devices: Emerging Technologies and Integration of Computational Methods. BIOSENSORS 2023; 13:bios13050569. [PMID: 37232930 DOI: 10.3390/bios13050569] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/14/2023] [Accepted: 05/15/2023] [Indexed: 05/27/2023]
Abstract
Recent innovations in point-of-care (POC) diagnostic technologies have paved a critical road for the improved application of biomedicine through the deployment of accurate and affordable programs into resource-scarce settings. The utilization of antibodies as a bio-recognition element in POC devices is currently limited due to obstacles associated with cost and production, impeding its widespread adoption. One promising alternative, on the other hand, is aptamer integration, i.e., short sequences of single-stranded DNA and RNA structures. The advantageous properties of these molecules are as follows: small molecular size, amenability to chemical modification, low- or nonimmunogenic characteristics, and their reproducibility within a short generation time. The utilization of these aforementioned features is critical in developing sensitive and portable POC systems. Furthermore, the deficiencies related to past experimental efforts to improve biosensor schematics, including the design of biorecognition elements, can be tackled with the integration of computational tools. These complementary tools enable the prediction of the reliability and functionality of the molecular structure of aptamers. In this review, we have overviewed the usage of aptamers in the development of novel and portable POC devices, in addition to highlighting the insights that simulations and other computational methods can provide into the use of aptamer modeling for POC integration.
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Affiliation(s)
- Yusuf Aslan
- UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Maryam Atabay
- UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Hussain Kawsar Chowdhury
- UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Ilgım Göktürk
- UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Yeşeren Saylan
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Fatih Inci
- UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
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Watkins SL. Current Trends and Changes in Use of Membrane Molecular Dynamics Simulations within Academia and the Pharmaceutical Industry. MEMBRANES 2023; 13:148. [PMID: 36837651 PMCID: PMC9961006 DOI: 10.3390/membranes13020148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/14/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
There has been an almost exponential increase in the use of molecular dynamics simulations in basic research and industry over the last 5 years, with almost a doubling in the number of publications each year. Many of these are focused on neurological membranes, and biological membranes in general, applied to the medical industry. A smaller portion have utilized membrane simulations to answer more basic questions related to the function of specific proteins, chemicals or biological processes. This review covers some newer studies, alongside studies from the last two decades, to determine changes in the field. Some of these are basic, while others are more profound, such as multi-component embedded membrane machinery. It is clear that many facets of the discipline remain the same, while the focus on and uses of the technology are broadening in scope and utilization as a general research tool. Analysis of recent literature provides an overview of the current methodologies, covers some of the recent trends or advances and tries to make predictions of the overall path membrane molecular dynamics will follow in the coming years. In general, the overview presented is geared towards the general scientific community, who may wish to introduce the use of these methodologies in light of these changes, making molecular dynamic simulations more feasible for general scientific or medical research.
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Affiliation(s)
- Stephan L Watkins
- Plant Pathology and CRGB, Oregon State University, 2701 SW Campus Way, Corvallis, OR 97331, USA
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Dutta S, Gagliardi M, Bellucci L, Agostini M, Corni S, Cecchini M, Brancolini G. Tuning gold-based surface functionalization for streptavidin detection: A combined simulative and experimental study. Front Mol Biosci 2022; 9:1006525. [DOI: 10.3389/fmolb.2022.1006525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 11/09/2022] [Indexed: 11/29/2022] Open
Abstract
A rationally designed gold-functionalized surface capable of capturing a target protein is presented using the biotin–streptavidin pair as a proof-of-concept. We carried out multiscale simulations to shed light on the binding mechanism of streptavidin on four differently biotinylated surfaces. Brownian Dynamics simulations were used to reveal the preferred initial orientation of streptavidin over the surfaces, whereas classical molecular dynamics was used to refine the binding poses and to investigate the fundamental forces involved in binding, and the binding kinetics. We assessed the binding events and the stability of the streptavidin attachment through a quartz crystal microbalance with dissipation monitoring (QCM-D). The sensing element comprises of biotinylated polyethylene glycol chains grafted on the sensor’s gold surface via thiol-Au chemistry. Finally, we compared the results from experiments and simulations. We found that the confined biotin moieties can specifically capture streptavidin from the liquid phase and provide guidelines on how to exploit the microscopic parameters obtained from simulations to guide the design of further biosensors with enhanced sensitivity.
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Peruffo N, Parolin G, Collini E, Corni S, Mancin F. Engineering the Aggregation of Dyes on Ligand-Shell Protected Gold Nanoparticles to Promote Plexcitons Formation. NANOMATERIALS 2022; 12:nano12071180. [PMID: 35407298 PMCID: PMC9000468 DOI: 10.3390/nano12071180] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/18/2022] [Accepted: 03/28/2022] [Indexed: 12/10/2022]
Abstract
The ability to control the light–matter interaction in nanosystems is a major challenge in the field of innovative photonics applications. In this framework, plexcitons are promising hybrid light–matter states arising from the strong coupling between plasmonic and excitonic materials. However, strategies to precisely control the formation of plexcitons and to modulate the coupling between the plasmonic and molecular moieties are still poorly explored. In this work, the attention is focused on suspensions of hybrid nanosystems prepared by coupling cationic gold nanoparticles to tetraphenyl porphyrins in different aggregation states. The role of crucial parameters such as the dimension of nanoparticles, the pH of the solution, and the ratio between the nanoparticles and dye concentration was systematically investigated. A variety of structures and coupling regimes were obtained. The rationalization of the results allowed for the suggestion of important guidelines towards the control of plexcitonic systems.
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Affiliation(s)
- Nicola Peruffo
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (N.P.); (G.P.)
| | - Giovanni Parolin
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (N.P.); (G.P.)
| | - Elisabetta Collini
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (N.P.); (G.P.)
- Padua Quantum Technologies Research Center, Via Gradenigo 6, 35131 Padova, Italy
- Correspondence: (E.C.); (S.C.); (F.M.)
| | - Stefano Corni
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (N.P.); (G.P.)
- Correspondence: (E.C.); (S.C.); (F.M.)
| | - Fabrizio Mancin
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (N.P.); (G.P.)
- Correspondence: (E.C.); (S.C.); (F.M.)
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