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Giussani L, Tabacchi G, Coluccia S, Fois E. Confining a Protein-Containing Water Nanodroplet inside Silica Nanochannels. Int J Mol Sci 2019; 20:E2965. [PMID: 31216631 PMCID: PMC6627703 DOI: 10.3390/ijms20122965] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/10/2019] [Accepted: 06/14/2019] [Indexed: 02/01/2023] Open
Abstract
Incorporation of biological systems in water nanodroplets has recently emerged as a new frontier to investigate structural changes of biomolecules, with perspective applications in ultra-fast drug delivery. We report on the molecular dynamics of the digestive protein Pepsin subjected to a double confinement. The double confinement stemmed from embedding the protein inside a water nanodroplet, which in turn was caged in a nanochannel mimicking the mesoporous silica SBA-15. The nano-bio-droplet, whose size fits with the pore diameter, behaved differently depending on the protonation state of the pore surface silanols. Neutral channel sections allowed for the droplet to flow, while deprotonated sections acted as anchoring piers for the droplet. Inside the droplet, the protein, not directly bonded to the surface, showed a behavior similar to that reported for bulk water solutions, indicating that double confinement should not alter its catalytic activity. Our results suggest that nanobiodroplets, recently fabricated in volatile environments, can be encapsulated and stored in mesoporous silicas.
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Affiliation(s)
- Lara Giussani
- Dipartimento di Scienza e Alta Tecnologia and INSTM udr Como, Insubria University, Via Valleggio 9, I-22100 Como, Italy.
| | - Gloria Tabacchi
- Dipartimento di Scienza e Alta Tecnologia and INSTM udr Como, Insubria University, Via Valleggio 9, I-22100 Como, Italy.
| | - Salvatore Coluccia
- Dipartimento di Chimica, Turin University, Via P. Giuria 7, I-10125 Turin, Italy.
| | - Ettore Fois
- Dipartimento di Scienza e Alta Tecnologia and INSTM udr Como, Insubria University, Via Valleggio 9, I-22100 Como, Italy.
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Leong J, Seo Y, Chu SH, Park C, Jeon EJ, Cho SW, Yang YY, DiPietro LA, Kim DH, Kong H. Pore Diameter of Mesoporous Silica Modulates Oxidation of H 2O 2-Sensing Chromophore in a Porous Matrix. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11242-11252. [PMID: 30173514 DOI: 10.1021/acs.langmuir.8b00957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hydrogen peroxide (H2O2) is an attractive chemical because of its bleaching properties in paper and pulp industry and as a disinfectant in the food, water, and medical industries. However, it is important to monitor the residual H2O2 level after its usage and prevent any unintended health problems or chemical reactions. Most H2O2 sensors often utilize fluorophores or electrical circuitry that requires an additional irradiation or a digital display. To this end, this study presents a 3,3',5,5'-tetramethylbenzidine (TMB)/horseradish peroxidase (HRP)-loaded patch that alerts the presence of high H2O2 levels by generating a visible blue color. We hypothesized that water-insoluble TMB immobilized within mesoporous silica particles of proper pore diameter and structure would act as a colorimetric indicator through the H2O2-mediated oxidation within a cross-linked patch. We examined this hypothesis by immobilizing TMB molecules in mesoporous silica particles with 2 and 7 nm diameter cylindrical pores as well as on nonporous silica particles. Then, we loaded these TMB-silica particles and HRP in a porous alginate patch via sequential in situ cross-linking reaction and lyophilization. In the presence of 25-5000 μM H2O2, which simulate H2O2 concentrations found in residual disinfecting fluids, the patch loaded with TMB-mesoporous silica particles with 7 nm diameter pores generated a distinct blue color with varying intensities depending on the H2O2 concentration. The design principles demonstrated in this study should be applicable to a broad array of sensors to be integrated into a moldable, three-dimensional matrix.
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Affiliation(s)
- Jiayu Leong
- Institute of Bioengineering and Nanotechnology , 31 Biopolis Way , Singapore 138669 , Singapore
| | | | - Sang-Hyon Chu
- National Institute of Aerospace , 100 Exploration Way , Hampton , Virginia 23666 , United States
| | - Cheol Park
- Advanced Materials and Processing Branch , NASA Langley Research Center , Hampton , Virginia 23681 , United States
| | - Eun Je Jeon
- Department of Biotechnology , Yonsei University , Seoul 03722 , Republic of Korea
| | - Seung-Woo Cho
- Department of Biotechnology , Yonsei University , Seoul 03722 , Republic of Korea
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology , 31 Biopolis Way , Singapore 138669 , Singapore
| | - Luisa A DiPietro
- Center for Wound Healing and Tissue Regeneration, College of Dentistry , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
| | - Dong Hyun Kim
- Department of Human and Culture Convergence Technology R&BD Group , Korea Institute of Industrial Technology , Ansan-si , Gyeonggi-do 426-910 , Republic of Korea
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Abstract
Empty spaces are abhorred by nature, which immediately rushes in to fill the void. Humans have learnt pretty well how to make ordered empty nanocontainers, and to get useful products out of them. When such an order is imparted to molecules, new properties may appear, often yielding advanced applications. This review illustrates how the organized void space inherently present in various materials: zeolites, clathrates, mesoporous silica/organosilica, and metal organic frameworks (MOF), for example, can be exploited to create confined, organized, and self-assembled supramolecular structures of low dimensionality. Features of the confining matrices relevant to organization are presented with special focus on molecular-level aspects. Selected examples of confined supramolecular assemblies - from small molecules to quantum dots or luminescent species - are aimed to show the complexity and potential of this approach. Natural confinement (minerals) and hyperconfinement (high pressure) provide further opportunities to understand and master the atomistic-level interactions governing supramolecular organization under nanospace restrictions.
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Affiliation(s)
- Gloria Tabacchi
- Department of Science and High Technology, University of Insubria, Via Valleggio, 9 I-22100, Como, Italy
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Tabacchi G, Calzaferri G, Fois E. One-dimensional self-assembly of perylene-diimide dyes by unidirectional transit of zeolite channel openings. Chem Commun (Camb) 2016; 52:11195-8. [PMID: 27484884 DOI: 10.1039/c6cc05303c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Confined supramolecular architectures of chromophores are key components in artificial antenna composites for solar energy harvesting and storage. A typical fabrication process, based on the insertion of dye molecules into zeolite channels, is still unknown at the molecular level. We show that slipping of perylene diimide dyes into the one-dimensional channels of zeolite L and travelling inside is only possible because of steric-interaction-induced cooperative vibrational modes of the host and the guest. The funnel-like structure of the channel opening, larger at the entrance, along with a directionally asymmetric entrance-exit probability, ensures a favorable self-assembly process of the perylene units.
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Affiliation(s)
- Gloria Tabacchi
- Department of Science and High Technology, University of Insubria, and INSTM, Via Valleggio 9, I-22100 Como, Italy.
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Sun B, Zhou G, Zhang H. Synthesis, functionalization, and applications of morphology-controllable silica-based nanostructures: A review. PROG SOLID STATE CH 2016. [DOI: 10.1016/j.progsolidstchem.2016.01.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Solano-Umaña V, Vega-Baudrit JR. Micro, Meso and Macro Porous Materials on Medicine. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/jbnb.2015.64023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Fried DI, Brieler FJ, Fröba M. Designing Inorganic Porous Materials for Enzyme Adsorption and Applications in Biocatalysis. ChemCatChem 2013. [DOI: 10.1002/cctc.201200640] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Berlier G, Gastaldi L, Ugazio E, Miletto I, Iliade P, Sapino S. Stabilization of quercetin flavonoid in MCM-41 mesoporous silica: positive effect of surface functionalization. J Colloid Interface Sci 2013; 393:109-18. [DOI: 10.1016/j.jcis.2012.10.073] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 10/29/2012] [Accepted: 10/30/2012] [Indexed: 01/04/2023]
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El Kadib A, Katir N, Finiels A, Castel A, Marcotte N, Molvinger K, Biolley C, Gaveau P, Bousmina M, Brunel D. Mesostructured fatty acid-tethered silicas: sustaining the order by co-templating with bulky precursors. Dalton Trans 2013; 42:1591-602. [DOI: 10.1039/c2dt31835k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Giussani L, Tabacchi G, Gianotti E, Coluccia S, Fois E. Disentangling protein-silica interactions. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2012; 370:1463-1477. [PMID: 22349251 DOI: 10.1098/rsta.2011.0267] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We present the results of modelling studies aimed at the understanding of the interaction of a 7 nm sized water droplet containing a negatively charged globular protein with flat silica surfaces. We show how the droplet interaction with the surface depends on the electrostatic surface charge, and that adhesion of the droplet occurs when the surface is negatively charged as well. The key role of water and of the charge-balancing counter ions in mediating the surface-protein adhesion is highlighted. The relevance of the present results with respect to the production of bioinorganic hybrids via encapsulation of proteins inside mesoporous silica materials is discussed.
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Affiliation(s)
- Lara Giussani
- Dipartimento Chimica IFM and Centro di Eccellenza NIS, Università di Torino, Via P. Giuria 7, 10125 Turin, Italy
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