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Kesharwani K, Kautu A, Sharma S, Singh R, Kumar V, Tripathi SK, Shukla P, Joshi KB. Short peptide amphiphile nanostructures facilitate sunlight-induced nanowelding of gold nanosheets. Chem Commun (Camb) 2022; 58:13815-13818. [PMID: 36444804 DOI: 10.1039/d2cc05392f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
An effortless thermoplasmonic welding of multi-shaped gold nanosheets is achieved by ordinary and simple sunlight irradiation. A light-matter interaction occurred via the nanogaps of smaller nanosheets, leading to the enhancement of the electromagnetic field and thus effectively concentrating the heat at the welding point. The sPA peptide nanostructure facilitates the nanowelding of small caged gold nanostructures.
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Affiliation(s)
- Khushboo Kesharwani
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India.
| | - Aanand Kautu
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India.
| | - Shruti Sharma
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India.
| | - Ramesh Singh
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India. .,Indian Institute of Technology Gandhinagar (IITGN), India
| | - Vikas Kumar
- Department of Chemistry, IISc, Bengaluru, Karnataka, India
| | - Satyendra Kumar Tripathi
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India.
| | - Prashant Shukla
- Department of Physics, School of Physical Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
| | - Khashti Ballabh Joshi
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India.
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Li X, Guo W, Xu R, Song Z, Ni T. The interaction mechanism between gold nanoparticles and proteins: Lysozyme, trypsin, pepsin, γ-globulin, and hemoglobin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120983. [PMID: 35149482 DOI: 10.1016/j.saa.2022.120983] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/25/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
In this study, the interaction between gold nanoparticles (AuNPs) and proteins (including lysozyme, trypsin, pepsin, γ-globulin and hemoglobin) was investigated by UV-visible absorption spectroscopy, fluorescence spectroscopy, circular dichroism (CD) spectroscopy and protein activity assay. AuNPs was synthesized using reduction of HAuCl4 with sodium citrate. The formation of AuNPs was confirmed from the characteristic surface plasmon resonance band at 521 nm and transmission electron microscopy revealed the average particle size was about 10 nm. The results reveal that AuNPs can interact with proteins to form a "protein corona (PC)", but the protein concentration required to form a relatively stable PC is not the same. The quenching mechanism of proteins by AuNPs is arisen from static quenching. The binding constants of AuNPs with proteins are in the range from 106 to 1010 L mol-1, and the order is pepsin > γ-globulin > hemoglobin > trypsin > lysozyme at 298 K. Van der Waals forces and hydrogen bonds are the main forces for the lysozyme-AuNPs system. The interaction between trypsin/pepsin/γ-globulin/hemoglobin and AuNPs is mainly by hydrophobic interaction. The addition of AuNPs has an effect on the secondary structure of proteins as confirmed from CD spectra. The change in secondary structure of different proteins is different and seems to have little relation with the binding constant. The activity of lysozyme/trypsin/pepsin decreases with the addition of AuNPs.
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Affiliation(s)
- Xiangrong Li
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
| | - Wei Guo
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Ruonan Xu
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Zhizhi Song
- Grade 2020, Clinical Medicine, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Tianjun Ni
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
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Cantarutti C, Hunashal Y, La Rosa C, Condorelli M, Giorgetti S, Bellotti V, Fogolari F, Esposito G. The corona of protein-gold nanoparticle systems: the role of ionic strength. Phys Chem Chem Phys 2021; 24:1630-1637. [PMID: 34951613 DOI: 10.1039/d1cp04574a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The nature of the nanoparticle-protein corona is emerging as a key aspect in determining the impact of nanomaterials on proteins and in general on the biological response. We previously demonstrated that citrate-stabilized gold nanoparticles (Cit-AuNPs) interact with β2-microglobulin (β2m) preserving the protein native structure. Moreover, Cit-AuNPs are able to hinder in vitro fibrillogenesis of a β2m pathologic variant, namely D76N, by reducing the oligomeric association of the protein in solution. Here, we clarify the characteristics of the interaction between β2m and Cit-AuNPs by means of different techniques, i.e. surface enhanced Raman spectroscopy, NMR and quartz crystal microbalance with dissipation monitoring. All the results obtained clearly show that by simply changing the ionic strength of the medium it is possible to switch from a labile and transient nature of the protein-NP adduct featuring the so-called soft corona, to a more "hard" interaction with a layer of proteins having a longer residence time on the NP surface. This confirms that the interaction between β2m and Cit-AuNPs is dominated by electrostatic forces which can be tuned by modifying the ionic strength.
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Affiliation(s)
| | - Yamanappa Hunashal
- DAME, Università di Udine, 33100 Udine, Italy.,Science Division, New York University Abu Dhabi, Abu Dhabi, UAE.
| | - Carmelo La Rosa
- Dip. Scienze Chimiche, Università di Catania, 95125 Catania, Italy
| | | | - Sofia Giorgetti
- Dipartimento di Medicina Molecolare, Università di Pavia, 27100 Pavia, Italy
| | - Vittorio Bellotti
- Dipartimento di Medicina Molecolare, Università di Pavia, 27100 Pavia, Italy.,Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Federico Fogolari
- DMIF, Università di Udine, 33100 Udine, Italy.,INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | - Gennaro Esposito
- Science Division, New York University Abu Dhabi, Abu Dhabi, UAE. .,INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
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Wen M, Li Y, Zhong W, Li Q, Cao L, Tan LL, Shang L. Interactions of cationic gold nanoclusters with serum proteins and effects on their cellular responses. J Colloid Interface Sci 2021; 610:116-125. [PMID: 34922069 DOI: 10.1016/j.jcis.2021.12.044] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/29/2021] [Accepted: 12/06/2021] [Indexed: 12/20/2022]
Abstract
Cationic nanoparticles (NPs) have shown great potential in biological applications owing to their distinct features such as favorable cellular internalization and easy binding to biomolecules. However, our current knowledge of cationic NPs' biological behavior, i.e., NP-protein interactions, is still rather limited. Herein, we choose ultrasmall-sized fluorescent gold nanoclusters (AuNCs) coated by (11-mercaptoundecyl) - N, N, N - trimethylammonium bromide (MUTAB) as representative cationic NPs, and systematically study their interactions with different serum proteins at nano-bio interfaces. By monitoring the fluorescence intensity of MUTAB-AuNCs, all proteins are observed to bind with roughly micromolar affinities to AuNCs and quench their fluorescence. Transient fluorescence spectroscopy, X-ray photoelectron spectroscopy and isothermal titration calorimetry are also adopted to characterize the physicochemical properties of MUTAB-AuNCs after the protein adsorption. Concomitantly, circular dichroism spectroscopy reveals that cationic AuNCs can exert protein-dependent conformational changes of these serum proteins. Moreover, protein adsorption onto cationic AuNCs can significantly influence their cellular responses such as cytotoxicity and uptake efficiency. These results provide important knowledge towards understanding the biological behaviors of cationic nanoparticles, which will be helpful in further designing and utilizing them for safe and efficient biomedical applications.
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Affiliation(s)
- Mengyao Wen
- Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Yixiao Li
- Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Wencheng Zhong
- Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Qingfang Li
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, PR China
| | - Liping Cao
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, PR China
| | - Li-Li Tan
- Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Li Shang
- Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.
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Insights into a Protein-Nanoparticle System by Paramagnetic Perturbation NMR Spectroscopy. MOLECULES (BASEL, SWITZERLAND) 2020; 25:molecules25215187. [PMID: 33171781 PMCID: PMC7664681 DOI: 10.3390/molecules25215187] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/12/2020] [Accepted: 10/22/2020] [Indexed: 11/18/2022]
Abstract
Background: The interaction between proteins and nanoparticles is a very relevant subject because of the potential applications in medicine and material science in general. Further interest derives from the amyloidogenic character of the considered protein, β2-microglobulin (β2m), which may be regarded as a paradigmatic system for possible therapeutic strategies. Previous evidence showed in fact that gold nanoparticles (AuNPs) are able to inhibit β2m fibril formation in vitro. Methods: NMR (Nuclear Magnetic Resonance) and ESR (Electron Spin Resonance) spectroscopy are employed to characterize the paramagnetic perturbation of the extrinsic nitroxide probe Tempol on β2m in the absence and presence of AuNPs to determine the surface accessibility properties and the occurrence of chemical or conformational exchange, based on measurements conducted under magnetization equilibrium and non-equilibrium conditions. Results: The nitroxide perturbation analysis successfully identifies the protein regions where protein-protein or protein-AuNPs interactions hinder accessibility or/and establish exchange contacts. These information give interesting clues to recognize the fibrillation interface of β2m and hypothesize a mechanism for AuNPs fibrillogenesis inhibition. Conclusions: The presented approach can be advantageously applied to the characterization of the interface in protein-protein and protein-nanoparticles interactions.
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Marson D, Posel Z, Posocco P. Molecular Features for Probing Small Amphiphilic Molecules with Self-Assembled Monolayer-Protected Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5671-5679. [PMID: 32348150 PMCID: PMC8007095 DOI: 10.1021/acs.langmuir.9b03686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 04/21/2020] [Indexed: 06/11/2023]
Abstract
The sensing of small molecules poses the challenge of developing devices able to discriminate between compounds that may be structurally very similar. Here, attention has been paid to the use of self-assembled monolayer (SAM)-protected gold nanoparticles since they enable a modular approach to tune single-molecule affinity and selectivity simply by changing functional moieties (i.e., covering ligands), along with multivalent molecular recognition. To date, the discovery of monolayers suitable for a specific molecular target has relied on trial-and-error approaches, with ligand chemistry being the main criterion used to modulate selectivity and sensitivity. By using molecular dynamics, we showcase that either individual molecular characteristics and/or collective features such as ligand flexibility, monolayer organization, ligand local ordering, and interfacial solvent properties can also be exploited conveniently. The knowledge of the molecular mechanisms that drive the recognition of small molecules on SAM-covered nanoparticles will critically expand our ability to manipulate and control such supramolecular systems.
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Affiliation(s)
- Domenico Marson
- Department
of Engineering and Architecture, University
of Trieste, 34127 Trieste, Italy
| | - Zbyšek Posel
- Department
of Engineering and Architecture, University
of Trieste, 34127 Trieste, Italy
- Department
of Informatics, Jan Evangelista Purkyně
University, 40096 Ústí nad Labem, Czech Republic
| | - Paola Posocco
- Department
of Engineering and Architecture, University
of Trieste, 34127 Trieste, Italy
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Brancolini G, Bellucci L, Maschio MC, Di Felice R, Corni S. The interaction of peptides and proteins with nanostructures surfaces: a challenge for nanoscience. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2018.12.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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