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Klees C, Alexandri C, Demeestere I, Lybaert P. The Role of microRNA in Spermatogenesis: Is There a Place for Fertility Preservation Innovation? Int J Mol Sci 2023; 25:460. [PMID: 38203631 PMCID: PMC10778981 DOI: 10.3390/ijms25010460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/24/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Oncological treatments have dramatically improved over the last decade, and as a result, survival rates for cancer patients have also improved. Quality of life, including concerns about fertility, has become a major focus for both oncologists and patients. While oncologic treatments are often highly effective at suppressing neoplastic growth, they are frequently associated with severe gonadotoxicity, leading to infertility. For male patients, the therapeutic option to preserve fertility is semen cryopreservation. In prepubertal patients, immature testicular tissue can be sampled and stored to allow post-cure transplantation of the tissue, immature germ cells, or in vitro spermatogenesis. However, experimental techniques have not yet been proven effective for restoring sperm production for these patients. MicroRNAs (miRNAs) have emerged as promising molecular markers and therapeutic tools in various diseases. These small regulatory RNAs possess the unique characteristic of having multiple gene targets. MiRNA-based therapeutics can, therefore, be used to modulate the expression of different genes involved in signaling pathways dysregulated by changes in the physiological environment (disease, temperature, ex vivo culture, pharmacological agents). This review discusses the possible role of miRNA as an innovative treatment option in male fertility preservation-restoration strategies and describes the diverse applications where these new therapeutic tools could serve as fertility protection agents.
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Affiliation(s)
- Charlotte Klees
- Research Laboratory on Human Reproduction, Faculty of Medicine, Université Libre de Bruxelles (ULB), 1070 Brussels, Belgium; (C.K.); (C.A.); (I.D.)
| | - Chrysanthi Alexandri
- Research Laboratory on Human Reproduction, Faculty of Medicine, Université Libre de Bruxelles (ULB), 1070 Brussels, Belgium; (C.K.); (C.A.); (I.D.)
| | - Isabelle Demeestere
- Research Laboratory on Human Reproduction, Faculty of Medicine, Université Libre de Bruxelles (ULB), 1070 Brussels, Belgium; (C.K.); (C.A.); (I.D.)
- Fertility Clinic, HUB-Erasme Hospital, 1070 Brussels, Belgium
| | - Pascale Lybaert
- Research Laboratory on Human Reproduction, Faculty of Medicine, Université Libre de Bruxelles (ULB), 1070 Brussels, Belgium; (C.K.); (C.A.); (I.D.)
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2
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Billon J, Omelchuk A, Shkirskiy V, Dabos-Seignon S, Alévêque O, Levillain E, Breton T, Gautier C. An innovative method for controlled synthesis of bicomponent monolayer films obtained by reduction of diazonium. NANOSCALE 2023; 15:19213-19218. [PMID: 37987201 DOI: 10.1039/d3nr03946c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
This study presents a novel method based on the electrochemical co-reduction of two aryldiazonium salts, enabling the synthesis of controlled two-component monolayer thin films on carbon in a single step. By introducing a 12-carbon alkyl chain as a spacer between the aryldiazonium function and the functional group, precise control over film thickness and composition was achieved. The alkyl chain effectively standardizes the reduction potential, enabling the equalization of reactivity and precise stoichiometric control. Experimental results from spectroscopic, electrochemical, and X-ray photoelectron spectroscopy analyses validate the effectiveness of the method in controlling the composition of the mixed layers.
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Affiliation(s)
- Julien Billon
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | - Anna Omelchuk
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | | | | | - Olivier Alévêque
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | - Eric Levillain
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | - Tony Breton
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
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3
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Retout M, Gosselin B, Jokerst JV, Jabin I, Bruylants G. A fluoride-induced aggregation test to quickly assess the efficiency of ligand exchange procedures from citrate capped AuNPs. Colloids Surf A Physicochem Eng Asp 2023; 660:130801. [PMID: 36779205 PMCID: PMC9912280 DOI: 10.1016/j.colsurfa.2022.130801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Hypothesis Citrate capped gold nanoparticles (AuNPs-citrate) are the starting material for most of the academic and industrial applications using gold nanoparticles. AuNPs-citrate must usually be functionalized with organic (bio)molecules, through a ligand exchange process, to become suitable for the envisaged application. The evaluation of the efficiency of the ligand-exchange process with a simple and convenient procedure is challenging. Experiments Fluoride was used to evaluate the efficiency of a ligand exchange process from AuNPs-citrate with five standard types of ligands. The relationship between the aggregation level of the AuNPs exposed to fluoride and the amount of residual citrate ligands at the surface of the AuNPs was studied. The fluoride-induced aggregation process was characterized with various techniques such as TEM, UV-Vis, ATR-FTIR or MANTA and then used to quickly identify the optimal conditions for the functionalization of AuNPs-citrate with a new ligand, i.e. a PEGylated calixarene-tetradiazonium salt (X4-(PEG)4). Findings It was observed that the fluoride-induced aggregation of AuNPs is proportional to the efficiency of the ligands exchange. We believe that these results could benefit to everyone engineering AuNPs for advanced applications, as the fluoride-aggregation of AuNPs can be used as a general and versatile quality test to verify the coating density of organic (bio)molecules on AuNPs.
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Affiliation(s)
- Maurice Retout
- Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
| | - Bryan Gosselin
- Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Jesse V. Jokerst
- Department of NanoEngineering and Department of Radiology, University of California, San Diego, La Jolla, CA 92093, United States
| | - Ivan Jabin
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Gilles Bruylants
- Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
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4
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Suárez-López R, Puntes VF, Bastús NG, Hervés C, Jaime C. Nucleation and growth of gold nanoparticles in the presence of different surfactants. A dissipative particle dynamics study. Sci Rep 2022; 12:13926. [PMID: 35977997 PMCID: PMC9385746 DOI: 10.1038/s41598-022-18155-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 08/05/2022] [Indexed: 11/23/2022] Open
Abstract
Nanoparticles (NPs) show promising applications in biomedicine, catalysis, and energy harvesting. This applicability relies on controlling the material’s features at the nanometer scale. Surfactants, a unique class of surface-active molecules, have a remarkable ability to tune NPs activity; provide specific functions, avoid their aggregation, and create stable colloidal solutions. Surfactants also control nanoparticles’ nucleation and growth processes by modifying nuclei solubility and surface energy. While nucleation seems independent from the surfactant, NP’s growth depends on it. NP`s size is influenced by the type of functional group (C, O, S or N), length of its C chain and NP to surfactant ratio. In this paper, gold nanoparticles (Au NPs) are taken as model systems to study how nucleation and growth processes are affected by the choice of surfactants by Dissipative Particle Dynamics (DPD) simulations. DPD has been mainly used for studying biochemical structures, like lipid bilayer models. However, the study of solid NPs, and their conjugates, needs the introduction of a new metallic component. To represent the collective phenomena of these large systems, their degrees of freedom are reduced by Coarse-Grained (CG) models. DPD behaved as a powerful tool for studying complex systems and shedding some light on some experimental observations, otherwise difficult to explain.
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Affiliation(s)
- Rosa Suárez-López
- Departament de Química, Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), 08193, Barcelona, Spain
| | - Víctor F Puntes
- Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain.,Vall d'Hebron Institut de Recerca (VHIR), 08035, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), P. Lluís Companys 23, 08010, Barcelona, Spain
| | - Neus G Bastús
- Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Carmen Hervés
- Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Carlos Jaime
- Departament de Química, Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), 08193, Barcelona, Spain.
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5
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Retout M, Cornelio B, Bruylants G, Jabin I. Bifunctional Calix[4]arene-Coated Gold Nanoparticles for Orthogonal Conjugation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:9301-9309. [PMID: 35866876 DOI: 10.1021/acs.langmuir.2c01122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Gold nanoparticles (AuNPs) are currently intensively exploited in the biomedical field as they possess interesting chemical and optical properties. Although their synthesis is well-known, their controlled surface modification with defined densities of ligands such as peptides, DNA, or antibodies remains challenging and has generally to be optimized case by case. This is particularly true for applications like in vivo drug delivery that require AuNPs with multiple ligands, for example a targeting ligand and a drug in well-defined proportions. In this context, we aimed to develop a calixarene-modification strategy that would allow the controlled orthogonal conjugation of AuNPs, respectively, via amide bond formation and copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC). To do this, we synthesized a calix[4]arene-tetradiazonium salt bearing four PEG chains ended by an alkyne group (C1) and, after optimization of its grafting on 20 nm AuNPs, we demonstrated that CuAAC can be used to conjugate an azide containing dye (N3-cya7.5). It was observed that AuNPs coated with C1 (AuNPs-C1) can be conjugated to approximately 600 N3-cya7.5 that is much higher than the value obtained for AuNPs decorated with traditional thiolated PEG ligands terminated by an alkyne group. The control over the number of molecules conjugated via CuAAC was even possible by incorporating a non-functional calixarene (C2) into the coating layer. We then combined C1 with a calix[4]arene-tetradiazonium salt bearing four carboxyl groups (C3) that allows conjugation of an amine (NH2-cya7.5) containing dye. The conjugation potential of these bifunctional AuNPs-C1/C3 was quantified by UV-vis spectroscopy: AuNPs decorated with equal amount of C1 and C3 could be conjugated to approximately 350 NH2-dyes and 300 N3-dyes using successively amide bond formation and CuAAC, demonstrating the control over the orthogonal conjugation. Such nanoconstructs could benefit to anyone in the need of a controlled modification of AuNPs with two different molecules via two different chemistries.
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Affiliation(s)
- Maurice Retout
- Engineering of Molecular Nanosystems, Université Libre de Bruxelles (ULB), 50 Avenue F.D. Roosevelt, 1050 Bruxelles, Belgium
| | - Benedetta Cornelio
- Laboratoire de Chimie Organique, Université Libre de Bruxelles (ULB), CP 160/06, 50 Avenue F.D. Roosevelt, 1050 Bruxelles, Belgium
| | - Gilles Bruylants
- Engineering of Molecular Nanosystems, Université Libre de Bruxelles (ULB), 50 Avenue F.D. Roosevelt, 1050 Bruxelles, Belgium
| | - Ivan Jabin
- Laboratoire de Chimie Organique, Université Libre de Bruxelles (ULB), CP 160/06, 50 Avenue F.D. Roosevelt, 1050 Bruxelles, Belgium
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6
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Mirica AC, Stan D, Chelcea IC, Mihailescu CM, Ofiteru A, Bocancia-Mateescu LA. Latest Trends in Lateral Flow Immunoassay (LFIA) Detection Labels and Conjugation Process. Front Bioeng Biotechnol 2022; 10:922772. [PMID: 35774059 PMCID: PMC9237331 DOI: 10.3389/fbioe.2022.922772] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 05/19/2022] [Indexed: 01/11/2023] Open
Abstract
LFIA is one of the most successful analytical methods for various target molecules detection. As a recent example, LFIA tests have played an important role in mitigating the effects of the global pandemic with SARS-COV-2, due to their ability to rapidly detect infected individuals and stop further spreading of the virus. For this reason, researchers around the world have done tremendous efforts to improve their sensibility and specificity. The development of LFIA has many sensitive steps, but some of the most important ones are choosing the proper labeling probes, the functionalization method and the conjugation process. There are a series of labeling probes described in the specialized literature, such as gold nanoparticles (GNP), latex particles (LP), magnetic nanoparticles (MNP), quantum dots (QDs) and more recently carbon, silica and europium nanoparticles. The current review aims to present some of the most recent and promising methods for the functionalization of the labeling probes and the conjugation with biomolecules, such as antibodies and antigens. The last chapter is dedicated to a selection of conjugation protocols, applicable to various types of nanoparticles (GNPs, QDs, magnetic nanoparticles, carbon nanoparticles, silica and europium nanoparticles).
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Affiliation(s)
- Andreea-Cristina Mirica
- R&D Department, DDS Diagnostic, Bucharest, Romania
- Advanced Polymer Materials Group, University POLITEHNICA of Bucharest, Bucharest, Romania
| | - Dana Stan
- R&D Department, DDS Diagnostic, Bucharest, Romania
| | | | - Carmen Marinela Mihailescu
- Microsystems in Biomedical and Environmental Applications, National Institute for Research and Development in Microtechnologies, Bucharest, Romania
- Pharmaceutical Faculty, Titu Maiorescu University, Bucharest, Romania
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7
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Geißler D, Nirmalananthan-Budau N, Scholtz L, Tavernaro I, Resch-Genger U. Analyzing the surface of functional nanomaterials-how to quantify the total and derivatizable number of functional groups and ligands. Mikrochim Acta 2021; 188:321. [PMID: 34482449 PMCID: PMC8418596 DOI: 10.1007/s00604-021-04960-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/08/2021] [Indexed: 12/04/2022]
Abstract
Functional nanomaterials (NM) of different size, shape, chemical composition, and surface chemistry are of increasing relevance for many key technologies of the twenty-first century. This includes polymer and silica or silica-coated nanoparticles (NP) with covalently bound surface groups, semiconductor quantum dots (QD), metal and metal oxide NP, and lanthanide-based NP with coordinatively or electrostatically bound ligands, as well as surface-coated nanostructures like micellar encapsulated NP. The surface chemistry can significantly affect the physicochemical properties of NM, their charge, their processability and performance, as well as their impact on human health and the environment. Thus, analytical methods for the characterization of NM surface chemistry regarding chemical identification, quantification, and accessibility of functional groups (FG) and surface ligands bearing such FG are of increasing importance for quality control of NM synthesis up to nanosafety. Here, we provide an overview of analytical methods for FG analysis and quantification with special emphasis on bioanalytically relevant FG broadly utilized for the covalent attachment of biomolecules like proteins, peptides, and oligonucleotides and address method- and material-related challenges and limitations. Analytical techniques reviewed include electrochemical titration methods, optical assays, nuclear magnetic resonance and vibrational spectroscopy, as well as X-ray based and thermal analysis methods, covering the last 5-10 years. Criteria for method classification and evaluation include the need for a signal-generating label, provision of either the total or derivatizable number of FG, need for expensive instrumentation, and suitability for process and production control during NM synthesis and functionalization.
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Affiliation(s)
- Daniel Geißler
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany
| | - Nithiya Nirmalananthan-Budau
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany
| | - Lena Scholtz
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany
| | - Isabella Tavernaro
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany
| | - Ute Resch-Genger
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany.
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8
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Retout M, Jabin I, Bruylants G. Synthesis of Ultrastable and Bioconjugable Ag, Au, and Bimetallic Ag_Au Nanoparticles Coated with Calix[4]arenes. ACS OMEGA 2021; 6:19675-19684. [PMID: 34368555 PMCID: PMC8340414 DOI: 10.1021/acsomega.1c02327] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/02/2021] [Indexed: 05/02/2023]
Abstract
Compared to gold nanoparticles, silver nanoparticles are largely underexploited for the development of plasmonic nanosensors. This is mainly due to their easy chemical degradation through oxidation, poor colloidal stability, and usually broad size distribution after synthesis, which leads to broad localized surface plasmon resonance bands. Coatings based on polymers such as poly(ethylene glycol) (PEG) or poly(vinylpyrrolidone) (PVP) and plant extracts have been used for the stabilization of AgNPs; however, these thick coatings are not suitable for sensing applications as they isolate the metallic core. The examples of stable AgNPs coated with a thin organic layer remain scarce in comparison to their gold counterparts. In this work, we present a convenient one-step synthesis strategy that allows to obtain unique gold, silver, and bimetallic NPs that combine all of the properties required for biosensing applications. The NPs are stabilized by a tunable calix[4]arene-based monolayer obtained through the reduction of calix[4]arene-tetradiazonium salts. These multidentate ligands are of particular interest as (i) they provide excellent colloidal and chemical stabilities to the particles thanks to their anchoring to the surface via multiple chemical bonds, (ii) they allow the subsequent (bio)conjugation of (bio)molecules under mild conditions, and (iii) they allow a control over the composition of mixed coating layers. Ag and Ag_Au nanoparticles of a high stability are obtained, opening perspectives for development of numerous biosensing applications.
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Affiliation(s)
- Maurice Retout
- Engineering
of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
| | - Ivan Jabin
- Laboratoire
de Chimie Organique, Université libre
de Bruxelles (ULB), Avenue
F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Gilles Bruylants
- Engineering
of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
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9
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PEGylated Gold Nanoparticles Grafted with N-Acetyl-L-Cysteine for Polymer Modification. NANOMATERIALS 2021; 11:nano11061434. [PMID: 34071711 PMCID: PMC8229060 DOI: 10.3390/nano11061434] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 12/03/2022]
Abstract
The subjects of this work were the enhancement and determination of the stability and other properties of gold nanoparticles (AuNPs) in an aqueous solution, gold nanoparticle immobilization, and further surface grafting on polyethylene naphthalate (PEN). Gold nanoparticles in PEG with a subsequent water solution addition were prepared using cathode sputtering; for the subsequent surface activation, two different solutions were used: (i) sodium citrate dihydrate (TCD) and (ii) N-acetyl-L-cysteine (NALC). The aim of this work was to study the effect of the concentration of these solutions on AuNPs stability, and further, the effect of the concentration of gold nanoparticles and their morphology, and to describe the aging process of solutions, namely, the optical properties of samples over 28 days. Stabilized AuNPs were prepared in an N-acetyl-L-cysteine (NALC) system and subsequently immobilized with NALC. The surface chemistry modification of AuNPs was confirmed using HRTEM/EDS. Gold nanoparticles were successfully immobilized with NALC. Grafting of the modified PEN from a solution of colloidal gold stabilized in the PEG–H2O–NALC system led to the polymer surface functionalization.
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Retout M, Blond P, Jabin I, Bruylants G. Ultrastable PEGylated Calixarene-Coated Gold Nanoparticles with a Tunable Bioconjugation Density for Biosensing Applications. Bioconjug Chem 2021; 32:290-300. [PMID: 33439626 DOI: 10.1021/acs.bioconjchem.0c00669] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Many in vivo and in vitro applications using gold nanoparticles (AuNPs) require (i) their PEGylation, as it increases their stability and prevents nonspecific protein adsorption, and (ii) their conjugation to biomolecules, that provides them with specific recognition properties. Currently, the functionalization of AuNPs is based on thiol chemistry that suffers from two major drawbacks: (i) the Au-S bond is labile and confers limited chemical robustness to the organic layer, and (ii) control over the bioconjugation density is highly challenging. We report here a novel functionalization strategy based on calix[4]arene-tetradiazonium platforms for the coating of AuNPs with a robust PEG layer and their controlled bioconjugation. AuNPs were first modified with a functional calix[4]arene-diazonium salt bearing three PEG chains ended by a methoxy group and one by a carboxyl group. The resulting particles showed excellent chemical and colloidal stabilities, compared to similar systems obtained via a classical thiol chemistry, and could even be dispersed in human serum without degrading or aggregating. In addition to that, the carboxyl groups protruding from the PEG layer allowed their conjugation via amide bond formation with amine-containing biomolecules such as peptides. The control of the bioconjugation was obtained by grafting mixed layers of functional and nonfunctional PEGylated calix[4]arenes, that allowed varying the number of functional groups carried by the AuNPs and subsequently their bioconjugation capacity while preserving their dense protective PEG shell. Finally, we used these nanomaterials, modified with peptide aptamers, for the in vitro biosensing of a cancer biomarker, Mdm2.
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Affiliation(s)
- Maurice Retout
- Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
| | - Pascale Blond
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Ivan Jabin
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Gilles Bruylants
- Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
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11
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Blond P, Bevernaegie R, Troian-Gautier L, Lagrost C, Hubert J, Reniers F, Raussens V, Jabin I. Ready-to-Use Germanium Surfaces for the Development of FTIR-Based Biosensors for Proteins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:12068-12076. [PMID: 33007158 DOI: 10.1021/acs.langmuir.0c02681] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Germanium is particularly suitable for the design of FTIR-based biosensors for proteins. The grafting of stable and thin organic layers on germanium surfaces remains, however, challenging. To tackle this problem, we developed a calix[4]arene-tetradiazonium salt decorated with four oligo(ethylene glycol) chains and a terminal reactive carboxyl group. This versatile molecular platform was covalently grafted on germanium surfaces to yield robust ready-to-use surfaces for biosensing applications. The grafted calixarene monolayer prevents nonspecific adsorption of proteins while allowing bioconjugation with biomolecules such as bovine serum albumin (BSA) or biotin. It is shown that the native form of the investigated proteins was maintained upon immobilization. As a proof of concept, the resulting calix[4]arene-based germanium biosensors were used through a combination of ATR-FTIR spectroscopy and fluorescence microscopy for the selective detection of streptavidin from a complex medium. This study opens real possibilities for the development of sensitive and selective FTIR-based biosensors devoted to the detection of proteins.
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Affiliation(s)
- Pascale Blond
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
- Laboratory for the Structure and Function of Biological Membranes, Centre for Structural Biology and Bioinformatics, Université libre de Bruxelles (ULB), Boulevard du Triomphe, CP206/02, B-1050 Brussels, Belgium
| | - Robin Bevernaegie
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Ludovic Troian-Gautier
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | | | - Julie Hubert
- Chemistry of Surfaces, Interfaces and Nanomaterials, Université libre de Bruxelles (ULB), Boulevard du Triomphe, CP 255, B-1050 Brussels, Belgium
| | - François Reniers
- Chemistry of Surfaces, Interfaces and Nanomaterials, Université libre de Bruxelles (ULB), Boulevard du Triomphe, CP 255, B-1050 Brussels, Belgium
| | - Vincent Raussens
- Laboratory for the Structure and Function of Biological Membranes, Centre for Structural Biology and Bioinformatics, Université libre de Bruxelles (ULB), Boulevard du Triomphe, CP206/02, B-1050 Brussels, Belgium
| | - Ivan Jabin
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
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12
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Liu JL, Zhang BB, Jia AQ, Xin ZF, Zhang QF. Functionalized resorcinarene as organic template for preparation of gold nanoparticles. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01030-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Fahmy SA, Preis E, Bakowsky U, Azzazy HMES. Palladium Nanoparticles Fabricated by Green Chemistry: Promising Chemotherapeutic, Antioxidant and Antimicrobial Agents. MATERIALS 2020; 13:ma13173661. [PMID: 32825057 PMCID: PMC7503772 DOI: 10.3390/ma13173661] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/08/2020] [Accepted: 08/17/2020] [Indexed: 02/06/2023]
Abstract
Palladium nanoparticles (Pd NPs) showed great potential in biomedical applications because of their unique physicochemical properties. Various conventional physical and chemical methods have been used for the synthesis of Pd NPs. However, these methods include the use of hazardous reagents and reaction conditions, which may be toxic to health and to the environment. Thus, eco-friendly, rapid, and economic approaches for the synthesis of Pd NPs have been developed. Bacteria, fungi, yeast, seaweeds, plants, and plant extracts were used to prepare Pd NPs. This review highlights the most recent studies for the biosynthesis of Pd NPs, factors controlling their synthesis, and their potential biomedical applications.
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Affiliation(s)
- Sherif Ashraf Fahmy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt;
| | - Eduard Preis
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany;
| | - Udo Bakowsky
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany;
- Correspondence: (U.B.); (H.M.E.-S.A.); Tel.: +49-(0)6421-282-5884 (U.B.); +20-2-2615-2559 (H.M.E.-S.A.)
| | - Hassan Mohamed El-Said Azzazy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt;
- Correspondence: (U.B.); (H.M.E.-S.A.); Tel.: +49-(0)6421-282-5884 (U.B.); +20-2-2615-2559 (H.M.E.-S.A.)
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Mattiuzzi A, Lenne Q, Carvalho Padilha J, Troian-Gautier L, Leroux YR, Jabin I, Lagrost C. Strategies for the Formation of Monolayers From Diazonium Salts: Unconventional Grafting Media, Unconventional Building Blocks. Front Chem 2020; 8:559. [PMID: 32766206 PMCID: PMC7381217 DOI: 10.3389/fchem.2020.00559] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/02/2020] [Indexed: 01/08/2023] Open
Abstract
Pioneered by J. Pinson and coll. in 1990s, the reductive grafting of aryldiazonium salts has become a powerful method for surface functionalization. Highly robust interfaces result from this surface attachment, resistant to heat, chemical degradation and ultrasonication. Importantly, this approach can be applied to many materials, ranging from conducting, semi-conducting, oxides to insulating substrates. In addition, either massive, flat surfaces or nanomaterials can be functionalized. The method is easy to process and fast. The grafting process involves the formation of highly reactive aryl radicals able to attack the substrate. However, the generated radicals can also react with already-grafted aryl species, leading to the formation of loosely-packed polyaryl multilayer films, typically of 10-15 nm thick. It is thus highly challenging to control the vertical extension of the deposited layer and to form well-ordered monolayers from aryldiazonium salts. In this mini review, we briefly describe the different strategies that have been developed to prepare well-ordered monolayers. We especially focus on two strategies successfully used in our laboratories, namely the use of unconventional solvents, i.e., room temperature ionic liquids (RTILs), as grafting media and the use of calixarene macrocycles by taking benefit of their pre-organized structure. These strategies give large possibilities for the structuring of interfaces with the widest choice of materials and highlight the potential of aryldiazonium grafting as a competitive alternative to self-assembled monolayers (SAMs) of alkyl thiols.
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Affiliation(s)
| | | | - Janine Carvalho Padilha
- Instituto Latino-Americano de Ciências da Vida e da Natureza, Universidade Federal da Integração Latino-Americana, Foz do Iguaçu, Brazil
| | | | | | - Ivan Jabin
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), Brussels, Belgium
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15
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Mattiuzzi A, Troian-Gautier L, Mertens J, Reniers F, Bergamini JF, Lenne Q, Lagrost C, Jabin I. Robust hydrophobic gold, glass and polypropylene surfaces obtained through a nanometric covalently bound organic layer. RSC Adv 2020; 10:13553-13561. [PMID: 35492995 PMCID: PMC9051540 DOI: 10.1039/d0ra01011a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 03/25/2020] [Indexed: 01/26/2023] Open
Abstract
The (electro)chemical grafting of a polyfluorinated calix[4]arene on gold, polypropylene and glass is reported. The modified surfaces were characterized by ellipsometry, atomic force microscopy (AFM), and by X-ray photoelectron spectroscopy (XPS). A nanometric, robust and uniform monolayer of covalently surface-bound calix[4]arenes was obtained on the three different materials. For all surfaces, contact angles higher than 110° were recorded, highlighting the hydrophobic character given by this ∼2 nm thin organic monolayer. Remarkably, the contact angle values remained unchanged after 18 months under a laboratory atmosphere. The results presented herein thus present an attractive and sustainable strategy for bringing hydrophobic properties to the interface of a wide range of materials. The grafting of a polyfluorinated calix[4]arene-tetradiazonium derivative on various surfaces led to the formation of very robust and stable hydrophobic monolayers.![]()
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Affiliation(s)
- Alice Mattiuzzi
- X4C 128 Rue du Chêne Bonnet 6110 Montigny-le-Tilleul Belgium
| | - Ludovic Troian-Gautier
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB) CP 160/06, 50 Avenue F. D. Roosevelt 1050 Brussels Belgium
| | - Jérémy Mertens
- Chemistry of Surfaces, Interfaces and Nanomaterials - ChemSIN, Université libre de Bruxelles (ULB) CP 255, Campus de la Plaine, Boulevard du Triomphe 1050 Brussels Belgium
| | - François Reniers
- Chemistry of Surfaces, Interfaces and Nanomaterials - ChemSIN, Université libre de Bruxelles (ULB) CP 255, Campus de la Plaine, Boulevard du Triomphe 1050 Brussels Belgium
| | | | - Quentin Lenne
- Univ Rennes, CNRS, ISCR-UMR 6226 F-35000 Rennes France
| | | | - Ivan Jabin
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB) CP 160/06, 50 Avenue F. D. Roosevelt 1050 Brussels Belgium
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16
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Troian-Gautier L, Mattiuzzi A, Reinaud O, Lagrost C, Jabin I. Use of calixarenes bearing diazonium groups for the development of robust monolayers with unique tailored properties. Org Biomol Chem 2020; 18:3624-3637. [DOI: 10.1039/d0ob00070a] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Calixarene-based diazonium salts can be easily synthesized in a few steps. This review surveys recent examples that illustrate the key advantages of these highly reactive molecular platforms for surface modification.
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Affiliation(s)
| | - Alice Mattiuzzi
- Laboratoire de Chimie Organique
- Université libre de Bruxelles (ULB)
- 1050 Brussels
- Belgium
- X4C
| | - Olivia Reinaud
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques
- CNRS UMR 8601
- Université de Paris
- 75006 Paris
- France
| | | | - Ivan Jabin
- Laboratoire de Chimie Organique
- Université libre de Bruxelles (ULB)
- 1050 Brussels
- Belgium
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18
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Retout M, Brunetti E, Valkenier H, Bruylants G. Limits of thiol chemistry revealed by quantitative analysis of mixed layers of thiolated-PEG ligands grafted onto gold nanoparticles. J Colloid Interface Sci 2019; 557:807-815. [DOI: 10.1016/j.jcis.2019.09.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/12/2019] [Accepted: 09/13/2019] [Indexed: 12/20/2022]
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19
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Uttam B, Hussain MA, Joshi S, Rao CP. Physicochemical and Ion-Sensing Properties of Benzofurazan-Appended Calix[4]arene in Solution and on Gold Nanoparticles: Spectroscopy, Microscopy, and DFT Computations in Support of the Species of Recognition. ACS OMEGA 2018; 3:16989-16999. [PMID: 31458321 PMCID: PMC6644172 DOI: 10.1021/acsomega.8b02848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 11/28/2018] [Indexed: 05/21/2023]
Abstract
A calix[4]arene conjugate (L) functionalized at the lower rim with a benzofurazan fluorophore (NBD) and at the upper rim with a thioether moiety has been synthesized and characterized by 1H NMR, 13C NMR, and mass spectrometry techniques. Both the absorption and emission spectral data for L in different solvents exhibited progressive changes with an increase in polarity. Ion recognition studies were performed by absorption and fluorescence spectroscopy using 10 different metal ions. Among these, Hg2+ exhibited greater changes in these spectra, whereas Cu2+ showed only significant changes and all other ions showed no change in the spectral features. Although the Hg2+ has dominant influence on the spectral features and provides a detection limit of 56.0 ± 0.6 ppb, the selectivity was hampered because of the presence of the derivatizations present on both the rims of L for ion interaction in solution. Therefore, L was immobilized onto gold nanoparticles (AuNPL's) so that the upper rim derivatizations anchor onto the gold surface through Au-S interactions, and this leaves out only the lower rim NBD derivatization for interaction with ions selectively. The AuNPL's were characterized by transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy (XPS) analyses. The surface characteristics were analyzed by contact angle measurements. The AuNPL's exhibit greater selectivity and enhanced sensitivity for Hg2+ ions with a lowest detection limit of 48.0 ± 0.8 ppb. The immobilization of L onto AuNPs was reflected in the corresponding fluorescence lifetime values, and the addition of Hg2+ to either L or AuNPL showed fluorescence quenching. The reversible recognition of Hg2+ by L was demonstrated by titrating L or AuNPL with Hg2+ followed by tetra-butyl ammonium iodide for several cycles. The structural features of Hg2+-bound species were demonstrated by density functional theory computations and were supported by the XPS data. The Hg2+ induces aggregated fibrillar morphology into supramolecular L, as demonstrated by microscopy when Hg2+ was added either to L or to AuNPL, supporting aggregation-caused quenching.
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Malytskyi V, Troian-Gautier L, Mattiuzzi A, Lambotte S, Cornelio B, Lagrost C, Jabin I. Synthesis of a Calix[4]arene-Monodiazonium Salt for Surface Modification. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801253] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Volodymyr Malytskyi
- Laboratoire de Chimie Organique; Université Libre de Bruxelles (ULB); avenue F. D. Roosevelt 50, CP160/06, B -1050 Brussels Belgium
| | - Ludovic Troian-Gautier
- Laboratoire de Chimie Organique; Université Libre de Bruxelles (ULB); avenue F. D. Roosevelt 50, CP160/06, B -1050 Brussels Belgium
| | - Alice Mattiuzzi
- Laboratoire de Chimie Organique; Université Libre de Bruxelles (ULB); avenue F. D. Roosevelt 50, CP160/06, B -1050 Brussels Belgium
- X4C; Rue Chêne Bonnet 128 6110 Montigny-le-Tilleul Belgium
| | - Sarah Lambotte
- Laboratoire de Chimie Organique; Université Libre de Bruxelles (ULB); avenue F. D. Roosevelt 50, CP160/06, B -1050 Brussels Belgium
| | - Benedetta Cornelio
- Laboratoire de Chimie Organique; Université Libre de Bruxelles (ULB); avenue F. D. Roosevelt 50, CP160/06, B -1050 Brussels Belgium
| | - Corinne Lagrost
- Univ. Rennes; Institut des Sciences Chimiques de Rennes -UMR 6226; Campus de Beaulieu; Rennes Cedex 35042 France
| | - Ivan Jabin
- Laboratoire de Chimie Organique; Université Libre de Bruxelles (ULB); avenue F. D. Roosevelt 50, CP160/06, B -1050 Brussels Belgium
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21
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Blond P, Mattiuzzi A, Valkenier H, Troian-Gautier L, Bergamini JF, Doneux T, Goormaghtigh E, Raussens V, Jabin I. Grafting of Oligo(ethylene glycol)-Functionalized Calix[4]arene-Tetradiazonium Salts for Antifouling Germanium and Gold Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6021-6027. [PMID: 29724105 DOI: 10.1021/acs.langmuir.8b00464] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Biosensors that can determine protein concentration and structure are highly desired for biomedical applications. For the development of such biosensors, the use of Fourier transform infrared (FTIR) spectroscopy with the attenuated internal total reflection (ATR) configuration is particularly attractive, but it requires appropriate surface functionalization of the ATR optical element. Indeed, the surface has to specifically interact with a target protein in close contact with the optical element and must display antifouling properties to prevent nonspecific adsorption of other proteins. Here, we report robust monolayers of calix[4]arenes bearing oligo(ethylene glycol) (oEG) chains, which were grafted on germanium and gold surfaces via their tetradiazonium salts. The formation of monolayers of oEGylated calix[4]arenes was confirmed by AFM, IR, and contact angle measurements. The antifouling properties of these modified surfaces were studied by ATR-FTIR spectroscopy and fluorescence microscopy, and the nonspecific absorption of bovine serum albumin was found to be reduced by 85% compared to that of unmodified germanium. In other words, the organic coating by oEGylated calix[4]arenes provides remarkable antifouling properties, opening the way for the design of germanium- or gold-based biosensors.
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Affiliation(s)
- Pascale Blond
- Laboratoire de Chimie Organique , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP160/06, B-1050 Brussels , Belgium
- Laboratory for the Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP206/02, B-1050 Brussels , Belgium
| | - Alice Mattiuzzi
- Laboratoire de Chimie Organique , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP160/06, B-1050 Brussels , Belgium
- X4C , Rue Chêne Bonnet 128 , 6110 Montigny-le-Tilleul , Belgium
| | - Hennie Valkenier
- Engineering of Molecular NanoSystems , Ecole Polytechnique de Bruxelles, Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP165/64, B-1050 Brussels , Belgium
| | - Ludovic Troian-Gautier
- Laboratoire de Chimie Organique , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP160/06, B-1050 Brussels , Belgium
| | - Jean-François Bergamini
- Institut des Sciences Chimiques de Rennes (Equipe MaCSE), CNRS, UMR 6226 , Université de Rennes 1 , Campus de Beaulieu, Bat 10C, 35042 Cedex Rennes , France
| | - Thomas Doneux
- Chimie Analytique et Chimie des Interfaces , Université Libre de Bruxelles (ULB) , Campus de la Plaine, boulevard du Triomphe , CP255, B-1050 Brussels , Belgium
| | - Erik Goormaghtigh
- Laboratory for the Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP206/02, B-1050 Brussels , Belgium
| | - Vincent Raussens
- Laboratory for the Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP206/02, B-1050 Brussels , Belgium
| | - Ivan Jabin
- Laboratoire de Chimie Organique , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP160/06, B-1050 Brussels , Belgium
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22
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Ermakova AM, Morozova JE, Shalaeva YV, Syakaev VV, Gubaidullin AT, Voloshina AD, Zobov VV, Nizameev IR, Bazanova OB, Antipin IS, Konovalov AI. Nanoconjugates of a calixresorcinarene derivative with methoxy poly(ethylene glycol) fragments for drug encapsulation. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:2057-2070. [PMID: 30116696 PMCID: PMC6071701 DOI: 10.3762/bjnano.9.195] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 07/11/2018] [Indexed: 05/07/2023]
Abstract
In order to obtain a non-toxic amphiphilic calixresorcinarene capable to form nanoconjugates for drug encapsulation, tetraundecylcalixresorcinarene functionalized by methoxy poly(ethylene glycol) chains has been synthesized. The macrocycle obtained is characterized by low hemotoxicity. In aqueous solution it forms nanoassociates that are able to encapsulate organic substrates of different hydrophobicity, including drugs (doxorubicin, naproxen, ibuprofen, quercetin). The micelles of the macrocycle slowed down the release of the hydrophilic substrates in vitro. In physiological sodium chloride solution and phosphate-buffered saline, the micelles of the macrocycle acquire thermoresponsive properties and exhibit a temperature-controlled release of doxorubicin in vitro. The combination of the low toxicity and the encapsulation properties of the obtained calixresorcinarene-mPEG conjugate shows promising potential for the use as a supramolecular drug-delivery system.
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Affiliation(s)
- Alina M Ermakova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
- Kazan Federal University, Kremlevskaya st. 18, 420008 Kazan, Russian Federation
| | - Julia E Morozova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
- Kazan Federal University, Kremlevskaya st. 18, 420008 Kazan, Russian Federation
| | - Yana V Shalaeva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
- Kazan Federal University, Kremlevskaya st. 18, 420008 Kazan, Russian Federation
| | - Victor V Syakaev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
| | - Aidar T Gubaidullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
| | - Alexandra D Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
| | - Vladimir V Zobov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
| | - Irek R Nizameev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
- Kazan National Research Technical University named after A. N. Tupolev – KAI, K. Marx str. 10, 420111 Kazan, Russian Federation
| | - Olga B Bazanova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
| | - Igor S Antipin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
- Kazan Federal University, Kremlevskaya st. 18, 420008 Kazan, Russian Federation
| | - Alexander I Konovalov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, 420088 Kazan, Russian Federation
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