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McGuire K, He S, Gracie J, Bryson C, Zheng D, Clark AW, Koehnke J, France DJ, Nau WM, Lee TC, Peveler WJ. Supramolecular Click Chemistry for Surface Modification of Quantum Dots Mediated by Cucurbit[7]uril. ACS NANO 2023; 17:21585-21594. [PMID: 37922402 PMCID: PMC10655248 DOI: 10.1021/acsnano.3c06601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
Cucurbiturils (CBs), barrel-shaped macrocyclic molecules, are capable of self-assembling at the surface of nanomaterials in their native state, via their carbonyl-ringed portals. However, the symmetrical two-portal structure typically leads to aggregated nanomaterials. We demonstrate that fluorescent quantum dot (QD) aggregates linked with CBs can be broken-up, retaining CBs adsorbed at their surface, via inclusion of guests in the CB cavity. Simultaneously, the QD surface is modified by a functional tail on the guest, thus the high affinity host-guest binding (logKa > 9) enables a non-covalent, click-like modification of the nanoparticles in aqueous solution. We achieved excellent modification efficiency in several functional QD conjugates as protein labels. Inclusion of weaker-binding guests (logKa = 4-6) enables subsequent displacement with stronger binders, realising modular switchable surface chemistries. Our general "hook-and-eye" approach to host-guest chemistry at nanomaterial interfaces will lead to divergent routes for nano-architectures with rich functionalities for theranostics and photonics in aqueous systems.
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Affiliation(s)
- Katie McGuire
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Suhang He
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Jennifer Gracie
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Charlotte Bryson
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Dazhong Zheng
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Alasdair W. Clark
- James
Watt School of Engineering, Advanced Research Centre, University of Glasgow, Glasgow, G11 6EW, United
Kingdom
| | - Jesko Koehnke
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
- Institut
für Lebensmittelchemie, Leibniz Universität
Hannover, Callinstr 5, 30167 Hannover, Germany
| | - David J. France
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Werner M. Nau
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Tung-Chun Lee
- Institute
for Materials Discovery, University College
London, London, WC1H 0AJ, United Kingdom
- Department
of Chemistry, University College London, London, WC1H 0AJ, United Kingdom
| | - William J. Peveler
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
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Development of oral curcumin based on pH-responsive transmembrane peptide-cyclodextrin derivative nanoparticles for hepatoma. Carbohydr Polym 2022; 277:118892. [PMID: 34893294 DOI: 10.1016/j.carbpol.2021.118892] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/01/2021] [Accepted: 11/11/2021] [Indexed: 12/22/2022]
Abstract
Herein, a pH-responsive cyclodextrin derivative (R6H4-CMβCD) with cell-penetrating ability was successfully synthesized, and curcumin-loaded nanoparticles (R6H4-CMβCD@CUR NPs, RCCNPs) were developed to improve its efficacy in hepatoma. RCCNPs could improve the cell uptake compared with CMβCD@CUR NPs (CCNPs) and were internalized into cells mainly through endocytosis mediated by reticulin and macropinocytosis. Furthermore, the accumulation of RCCNPs in hepatoma cells at pH 6.4 was higher than that at pH 7.4, indicating a pH-responsive uptake. Additionally, RCCNPs could escape from the lysosomes via the "proton sponge effect", and a high apoptosis rate was detected. Importantly, in vivo experiments revealed that orally administered RCCNPs could exert excellent anti-cancer effects in tumor-bearing mice. Hematoxylin-eosin staining did not show significant histological changes in the major organs. Thus, our findings indicate the potential of R6H4-CMβCD as a nanopharmaceutical material, and RCCNPs as an effective delivery system for oral curcumin in cancer management.
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Sanchez Perez E, Toor R, Bruyat P, Cepeda C, Degardin M, Dejeu J, Boturyn D, Coche-Guérente L. Impact of Multimeric Ferrocene-containing Cyclodecapeptide Scaffold on Host-Guest Interactions at a β-Cyclodextrin Covered Surface. Chemphyschem 2021; 22:2231-2239. [PMID: 34397150 DOI: 10.1002/cphc.202100469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/05/2021] [Indexed: 11/07/2022]
Abstract
Among non-covalent bonds, the host-guest interaction is an attractive way to attach biomolecules to solid surfaces since the binding strength can be tuned by the nature of host and guest partners or through the valency of the interaction. For that purpose, we synthesized cyclodecapeptide scaffolds exhibiting in a spatially controlled manner two independent domains enabling the multimeric presentation of guest molecules on one face and the other face enabling the potential grafting of a biomolecule of interest. In this work, we were interested in the β-cyclodextrin/ferrocene inclusion complex formed on β-CD monolayers functionalized surfaces. By using surface sensitive techniques such as quartz crystal microbalance and surface plasmon resonance, we quantified the influence of the guest valency on the stability of the inclusion complexes. The results show a drastic enhancement of the affinity with the gradual increase of guest valency. Considering that the sequential binding events are equal and independent, we applied the multivalent model developed by the Huskens group to extract intrinsic binding constants and an effective concentration of host.
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Affiliation(s)
- Enrique Sanchez Perez
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Ritu Toor
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Pierrick Bruyat
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Céline Cepeda
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Mélissa Degardin
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Jérôme Dejeu
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Didier Boturyn
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Liliane Coche-Guérente
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
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