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Zhaisanbayeva BA, Mun EA, Ulmanova L, Zhunissova Z, Umbayev B, Olzhayev F, Vorobjev IA, Hortelano G, Khutoryanskiy VV. In vitro and in vivo toxicity of thiolated and PEGylated organosilica nanoparticles. Int J Pharm 2024; 652:123852. [PMID: 38280501 DOI: 10.1016/j.ijpharm.2024.123852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 01/29/2024]
Abstract
This study comprises the comprehensive toxicological assessment of thiolated organosilica nanoparticles (NPs) synthesised from 3-mercaptopropyltrimethoxysilane (MPTS). We investigated the influence of three different types of nanoparticles synthesised from 3-mercaptopropyltrimethoxysilane: the starting thiolated silica (Si-NP-SH) and their derivatives prepared by surface PEGylation with PEG 750 (Si-NP-PEG750) and 5000 Da (Si-NP-PEG5000) on biological subjects from in vitro to in vivo experiments to explore the possible applications of those nanoparticles in biomedical research. As a result of this study, we generated a comprehensive understanding of the toxicological properties of these nanoparticles, including their cytotoxicity in different cell lines, hemolytic properties, in vitro localisation, mucosal irritation properties and biodistribution in BALB/c mice. Our findings indicate that all three types of nanoparticles can be considered safe and have promising prospects for use in biomedical applications. Nanoparticles did not affect the viability of HPF, MCF7, HEK293 and A549 cell lines at low concentrations (up to 100 µg/mL); moreover, they did not cause organ damage to BALB/c mice at concentrations of 10 mg/kg. The outcomes of this study enhance our understanding of the impact of organosilica nanoparticles on health and the environment, which is vital for developing silica nanoparticle-based drug delivery systems and provides opportunities to expand the applications of organosilica nanoparticles.
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Affiliation(s)
- Balnur A Zhaisanbayeva
- School of Engineering and Digital Science, Nazarbayev University, 010000 Astana, Kazakhstan; School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan.
| | - Ellina A Mun
- School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan.
| | - Leila Ulmanova
- School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan.
| | - Zarina Zhunissova
- School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan.
| | - Bauyrzhan Umbayev
- National Laboratory Astana, Nazarbayev University, 010000 Astana, Kazakhstan.
| | - Farkhad Olzhayev
- National Laboratory Astana, Nazarbayev University, 010000 Astana, Kazakhstan.
| | - Ivan A Vorobjev
- School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan; National Laboratory Astana, Nazarbayev University, 010000 Astana, Kazakhstan.
| | - Gonzalo Hortelano
- School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan.
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2
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Cooke DJ, Maier EY, King TL, Lin H, Hendrichs S, Lee S, Mafy NN, Scott KM, Lu Y, Que EL. Dual Nanoparticle Conjugates for Highly Sensitive and Versatile Sensing Using 19 F Magnetic Resonance Imaging. Angew Chem Int Ed Engl 2024; 63:e202312322. [PMID: 38016929 DOI: 10.1002/anie.202312322] [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: 08/22/2023] [Revised: 10/11/2023] [Accepted: 11/28/2023] [Indexed: 11/30/2023]
Abstract
Fluorine magnetic resonance imaging (19 F MRI) has emerged as an attractive alternative to conventional 1 H MRI due to enhanced specificity deriving from negligible background signal in this modality. We report a dual nanoparticle conjugate (DNC) platform as an aptamer-based sensor for use in 19 F MRI. DNC consists of core-shell nanoparticles with a liquid perfluorocarbon core and a mesoporous silica shell (19 F-MSNs), which give a robust 19 F MR signal, and superparamagnetic iron oxide nanoparticles (SPIONs) as magnetic quenchers. Due to the strong magnetic quenching effects of SPIONs, this platform is uniquely sensitive and functions with a low concentration of SPIONs (4 equivalents) relative to 19 F-MSNs. The probe functions as a "turn-on" sensor using target-induced dissociation of DNA aptamers. The thrombin binding aptamer was incorporated as a proof-of-concept (DNCThr ), and we demonstrate a significant increase in 19 F MR signal intensity when DNCThr is incubated with human α-thrombin. This proof-of-concept probe is highly versatile and can be adapted to sense ATP and kanamycin as well. Importantly, DNCThr generates a robust 19 F MRI "hot-spot" signal in response to thrombin in live mice, establishing this platform as a practical, versatile, and biologically relevant molecular imaging probe.
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Affiliation(s)
- Daniel J Cooke
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Esther Y Maier
- College of Pharmacy, University of Texas at Austin, Austin, TX 78712, USA
| | - Tyler L King
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Haoding Lin
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Santiago Hendrichs
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Slade Lee
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Noushaba N Mafy
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Kathleen M Scott
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Yi Lu
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
- Departments of chemical engineering, biomedical engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - Emily L Que
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
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3
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Villuendas H, Vilches C, Quidant R. Standardization of In Vitro Studies for Plasmonic Photothermal therapy. ACS NANOSCIENCE AU 2023; 3:347-352. [PMID: 37868227 PMCID: PMC10588432 DOI: 10.1021/acsnanoscienceau.3c00011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 10/24/2023]
Abstract
Lack of standardization is a systematic problem that impacts nanomedicine by challenging data comparison from different studies. Translation from preclinical to clinical stages indeed requires reproducible data that can be easily accessed and compared. In this work, we propose a series of experimental standards for in vitro plasmonic photothermal therapy (PPTT). This best practice guide covers the five main aspects of PPTT studies in vitro: nanomaterials, biological samples, pre-, during, and postirradiation characterization. We are confident that such standardization of experimental protocols and reported data will benefit the development of PPTT as a transversal therapy.
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Affiliation(s)
- Helena Villuendas
- Nanophotonic
Systems Laboratory, Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland
| | - Clara Vilches
- ICFO
− Institut de Ciències Fotòniques, the Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Romain Quidant
- Nanophotonic
Systems Laboratory, Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland
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4
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Tehrani SF, Bharadwaj P, Leblond Chain J, Roullin VG. Purification processes of polymeric nanoparticles: How to improve their clinical translation? J Control Release 2023; 360:591-612. [PMID: 37422123 DOI: 10.1016/j.jconrel.2023.06.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 06/05/2023] [Accepted: 06/28/2023] [Indexed: 07/10/2023]
Abstract
Polymeric nanoparticles, as revolutionary nanomedicines, have offered a new class of diagnostic and therapeutic solutions for a multitude of diseases. With its immense potential, the world witnesses the new age of nanotechnology after the COVID-19 vaccines were developed based on nanotechnology. Even though there are countless benchtop research studies in the nanotechnology world, their integration into commercially available technologies is still restricted. The post-pandemic world demands a surge of research in the domain, which leaves us with the fundamental question: why is the clinical translation of therapeutic nanoparticles so restricted? Complications in nanomedicine purification, among other things, are to blame for the lack of transference. Polymeric nanoparticles, owing to their ease of manufacture, biocompatibility, and enhanced efficiency, are one of the more explored domains in organic-based nanomedicines. Purification of nanoparticles can be challenging and necessitates tailoring the available methods in accordance with the polymeric nanoparticle and impurities involved. Though a number of techniques have been described, there are no available guidelines that help in selecting the method to better suit our requirements. We encountered this difficulty while compiling articles for this review and looking for methods to purify polymeric nanoparticles. The currently accessible bibliography for purification techniques only provides approaches for a specific type of nanomaterial or sometimes even procedures for bulk materials, that are not fully relevant to nanoparticles. In our research, we tried to summarize the available purification techniques using the approach of A.F. Armington. We divided the purification systems into two major classes, namely: phase separation-based techniques (based on the physical differences between the phases) and matter exchange-based techniques (centered on physicochemical induced transfer of materials and compounds). The phase separation methods are based on either using nanoparticle size differences to retain them on a physical barrier (filtration techniques) or using their densities to segregate them (centrifugation techniques). The matter exchange separation methods rely on either transferring the molecules or impurities across a barrier using simple physicochemical phenomena, like the concentration gradients (dialysis method) or partition coefficients (extraction technique). After describing the methods in detail, we highlight their advantages and limitations, mainly focusing on preformed polymer-based nanoparticles. Tailoring a purification strategy takes into account the nanoparticle structure and its integrity, the method selected should be suited for preserving the integrity of the particles, in addition to conforming to the economical, material and productivity considerations. In the meantime, we advocate the use of a harmonized international regulatory framework to define the adequate physicochemical and biological characterization of nanomedicines. An appropriate purification strategy serves as the backbone to achieving desired characteristics, in addition to reducing variability. As a result, the present review aspires to serve as a comprehensive guide for researchers, who are new to the domain, as well as a synopsis of purification strategies and analytical characterization methods used in preclinical studies.
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Affiliation(s)
- Soudeh F Tehrani
- Laboratoire de Nanotechnologies Pharmaceutiques, Faculté de pharmacie, Université de Montréal, C.P. 6128, succursale centre-ville, Montréal, Québec H3C 3J7, Canada
| | - Priyanshu Bharadwaj
- Laboratoire de Nanotechnologies Pharmaceutiques, Faculté de pharmacie, Université de Montréal, C.P. 6128, succursale centre-ville, Montréal, Québec H3C 3J7, Canada
| | | | - V Gaëlle Roullin
- Laboratoire de Nanotechnologies Pharmaceutiques, Faculté de pharmacie, Université de Montréal, C.P. 6128, succursale centre-ville, Montréal, Québec H3C 3J7, Canada.
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Chitosan/Albumin Coating Factorial Optimization of Alginate/Dextran Sulfate Cores for Oral Delivery of Insulin. Mar Drugs 2023; 21:md21030179. [PMID: 36976228 PMCID: PMC10057083 DOI: 10.3390/md21030179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/10/2023] [Accepted: 03/12/2023] [Indexed: 03/17/2023] Open
Abstract
The design of nanoparticle formulations composed of biopolymers, that govern the physicochemical properties of orally delivered insulin, relies on improving insulin stability and absorption through the intestinal mucosa while protecting it from harsh conditions in the gastrointestinal (GI) tract. Chitosan/polyethylene glycol (PEG) and albumin coating of alginate/dextran sulfate hydrogel cores are presented as a multilayer complex protecting insulin within the nanoparticle. This study aims to optimize a nanoparticle formulation by assessing the relationship between design parameters and experimental data using response surface methodology through a 3-factor 3-level optimization Box–Behnken design. While the selected independent variables were the concentrations of PEG, chitosan and albumin, the dependent variables were particle size, polydispersity index (PDI), zeta potential, and insulin release. Experimental results showed a nanoparticle size ranging from 313 to 585 nm, with PDI from 0.17 to 0.39 and zeta potential ranging from −29 to −44 mV. Insulin bioactivity was maintained in simulated GI media with over 45% cumulative release after 180 min in a simulated intestinal medium. Based on the experimental responses and according to the criteria of desirability on the experimental region’s constraints, solutions of 0.03% PEG, 0.047% chitosan and 1.20% albumin provide an optimum nanoparticle formulation for insulin oral delivery.
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Study of Cytotoxicity and Internalization of Redox-Responsive Iron Oxide Nanoparticles on PC-3 and 4T1 Cancer Cell Lines. Pharmaceutics 2022; 15:pharmaceutics15010127. [PMID: 36678755 PMCID: PMC9864410 DOI: 10.3390/pharmaceutics15010127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/25/2022] [Accepted: 12/26/2022] [Indexed: 01/01/2023] Open
Abstract
Redox-responsive and magnetic nanomaterials are widely used in tumor treatment separately, and while the application of their combined functionalities is perspective, exactly how such synergistic effects can be implemented is still unclear. This report investigates the internalization dynamics of magnetic redox-responsive nanoparticles (MNP-SS) and their cytotoxicity toward PC-3 and 4T1 cell lines. It is shown that MNP-SS synthesized by covalent grafting of polyethylene glycol (PEG) on the magnetic nanoparticle (MNP) surface via SS-bonds lose their colloidal stability and aggregate fully in a solution containing DTT, and partially in conditioned media, whereas the PEGylated MNP (MNP-PEG) without S-S linker control remains stable under the same conditions. Internalized MNP-SS lose the PEG shell more quickly, causing enhanced magnetic core dissolution and thus increased toxicity. This was confirmed by fluorescence microscopy using MNP-SS dual-labeled by Cy3 via labile disulfide, and Cy5 via a rigid linker. The dyes demonstrated a significant difference in fluorescence dynamics and intensity. Additionally, MNP-SS demonstrate quicker cellular uptake compared to MNP-PEG, as confirmed by TEM analysis. The combination of disulfide bonds, leading to faster dissolution of the iron oxide core, and the high-oxidative potential Fe3+ ions can synergically enhance oxidative stress in comparison with more stable coating without SS-bonds in the case of MNP-PEG. It decreases the cancer cell viability, especially for the 4T1, which is known for being sensitive to ferroptosis-triggering factors. In this work, we have shown the effect of redox-responsive grafting of the MNP surface as a key factor affecting MNP-internalization rate and dissolution with the release of iron ions inside cancer cells. This kind of synergistic effect is described for the first time and can be used not only in combination with drug delivery, but also in treatment of tumors responsive to ferroptosis.
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7
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Hu Y, Zhang Q, Garcia-Rojas D, Ling V, Masterson CM, Bi Y, Xiao Z, Guo X, Villanova J, Dunn J, Colvin VL. Increasing the antioxidant capacity of ceria nanoparticles with catechol-grafted poly(ethylene glycol). J Mater Chem B 2022; 10:10042-10053. [PMID: 36156670 DOI: 10.1039/d2tb00779g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Ceria nanoparticles are remarkable antioxidants due to their large cerium(III) content and the possibility of recovering cerium(III) from cerium(IV) after reaction. Here we increase the cerium(III) content of colloidally stable nanoparticles (e.g., nanocrystals) using a reactive polymeric surface coating. Catechol-grafted poly(ethylene glycols) (PEG) polymers of varying lengths and architectures yield materials that are non-aggregating in a variety of aqueous media. Cerium(IV) on the ceria surface both binds and oxidizes the catechol functionality, generating a dark-red colour emblematic of surface-oxidized catechols with a concomitant increase in cerium(III) revealed by X-ray photoemission spectroscopy (XPS). The extent of ceria reduction depends sensitively on the architecture of the coating polymer; small and compact polymer chains pack with high density at the nanoparticle surface yielding the most cerium(III). Nanoparticles with increased surface reduction, quantified by the intensity of their optical absorption and thermogravimetric measures of polymer grafting densities, were more potent antioxidants as measured by a standard TEAC antioxidant assay. For the same core composition nanoparticle antioxidant capacities could be increased over an order of magnitude by tailoring the length and architecture of the reactive surface coatings.
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Affiliation(s)
- Yue Hu
- Department of Chemistry, Brown University, USA.
| | | | | | - Vivian Ling
- Department of Chemistry, Brown University, USA.
| | | | - Yidan Bi
- Department of Chemistry, Brown University, USA.
| | - Zhen Xiao
- Department of Chemistry, Brown University, USA.
| | | | | | - Joshua Dunn
- Department of Chemistry, Brown University, USA.
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8
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Seo Y, Ghazanfari L, Master A, Vishwasrao HM, Wan X, Sokolsky-Papkov M, Kabanov AV. Poly(2-oxazoline)-magnetite NanoFerrogels: Magnetic field responsive theranostic platform for cancer drug delivery and imaging. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2022; 39:102459. [PMID: 34530163 PMCID: PMC8665074 DOI: 10.1016/j.nano.2021.102459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/21/2021] [Accepted: 08/03/2021] [Indexed: 01/03/2023]
Abstract
Combining diagnosis and treatment approaches in one entity is the goal of theranostics for cancer therapy. Magnetic nanoparticles have been extensively used as contrast agents for nuclear magnetic resonance imaging as well as drug carriers and remote actuation agents. Poly(2-oxazoline)-based polymeric micelles, which have been shown to efficiently solubilize hydrophobic drugs and drug combinations, have high loading capacity (above 40% w/w) for paclitaxel. In this study, we report the development of novel theranostic system, NanoFerrogels, which is designed to capitalize on the magnetic nanoparticle properties as imaging agents and the poly(2-oxazoline)-based micelles as drug loading compartment. We developed six formulations with magnetic nanoparticle content of 0.3%-12% (w/w), with the z-average sizes of 85-130 nm and ξ-potential of 2.7-28.3 mV. The release profiles of paclitaxel from NanoFerrogels were notably dependent on the degree of dopamine grafting on poly(2-oxazoline)-based micelles. Paclitaxel loaded NanoFerrogels showed efficacy against three breast cancer lines which was comparable to free paclitaxel. They also showed improved tumor and lymph node accumulation and signal reduction in vivo (2.7% in tumor; 8.5% in lymph node) compared to clinically approved imaging agent ferumoxytol (FERAHEME®) 24 h after administration. NanoFerrogels responded to super-low frequency alternating current magnetic field (50 kA m-1, 50 Hz) which accelerated drug release from paclitaxel-loaded NanoFerrogels or caused death of cells loaded with NanoFerrogels. These proof-of-concept experiments demonstrate that NanoFerrogels have potential as remotely actuated theranostic platform for cancer diagnosis and treatment.
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Affiliation(s)
- Youngee Seo
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Lida Ghazanfari
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Alyssa Master
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Hemant M Vishwasrao
- Center for Drug Delivery and Nanomedicine and Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, United States
| | - Xiaomeng Wan
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Marina Sokolsky-Papkov
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.
| | - Alexander V Kabanov
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia.
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9
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Puglisi A, Bassini S, Reimhult E. Cyclodextrin-Appended Superparamagnetic Iron Oxide Nanoparticles as Cholesterol-Mopping Agents. Front Chem 2021; 9:795598. [PMID: 34869239 PMCID: PMC8636776 DOI: 10.3389/fchem.2021.795598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/01/2021] [Indexed: 11/13/2022] Open
Abstract
Cholesterol plays a crucial role in major cardiovascular and neurodegenerative diseases, including Alzheimer's disease and rare genetic disorders showing altered cholesterol metabolism. Cyclodextrins (CDs) have shown promising therapeutic efficacy based on their capacity to sequester and mobilise cholesterol. However, the administration of monomeric CDs suffers from several drawbacks due to their lack of specificity and poor pharmacokinetics. We present core-shell superparamagnetic iron oxide nanoparticles (SPIONs) functionalised with CDs appended to poly (2-methyl-2-oxazoline) polymers grafted in a dense brush to the iron oxide core. The CD-decorated nanoparticles (CySPIONs) are designed so that the macrocycle is specifically cleaved off the nanoparticle's shell at a slightly acidic pH. In the intended use, free monomeric CDs will then mobilise cholesterol out of the lysosome to the cytosol and beyond through the formation of an inclusion complex. Hence, its suitability as a therapeutic platform to remove cholesterol in the lysosomal compartment. Synthesis and full characterization of the polymer as well as of the core-shell SPION are presented. Cholesterol-binding activity is shown through an enzymatic assay.
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Affiliation(s)
- Antonino Puglisi
- Department of Nanobiotechnology, Institute of Biologically Inspired Materials, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria
| | - Simone Bassini
- Department of Nanobiotechnology, Institute of Biologically Inspired Materials, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria.,Life Sciences Department, University of Modena and Reggio Emilia, Modena, Italy
| | - Erik Reimhult
- Department of Nanobiotechnology, Institute of Biologically Inspired Materials, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria
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10
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Willinger M, Reimhult E. Thermoresponsive Nanoparticles with Cyclic-Polymer-Grafted Shells Are More Stable than with Linear-Polymer-Grafted Shells: Effect of Polymer Topology, Molecular Weight, and Core Size. J Phys Chem B 2021; 125:7009-7023. [PMID: 34156854 PMCID: PMC8279546 DOI: 10.1021/acs.jpcb.1c00142] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/26/2021] [Indexed: 11/27/2022]
Abstract
Polymer brush-grafted superparamagnetic iron oxide nanoparticles can change their aggregation state in response to temperature and are potential smart materials for many applications. Recently, the shell morphology imposed by grafting to a nanoparticle core was shown to strongly influence the thermoresponsiveness through a coupling of intrashell solubility transitions and nanoparticle aggregation. We investigate how a change from linear to cyclic polymer topology affects the thermoresponsiveness of poly(2-isopropyl-2-oxazoline) brush-grafted superparamagnetic iron oxide nanoparticles. Linear and cyclic polymers with three different molecular weights (7, 18, and 24.5 kg mol-1) on two different core sizes (3.7 and 9.2 nm) and as free polymer were investigated. We observed the critical flocculation temperature (CFT) during temperature cycling dynamic light scattering experiments, the critical solution temperature (CST), and the transition enthalpy per monomer during differential scanning calorimetry measurements. When all conditions are identical, cyclic polymers increase the colloidal stability and the critical flocculation temperature compared to their linear counterparts. Furthermore, the cyclic polymer shows only one uniform transition, while we observe multiple transitions for the linear polymer shells. We link the single transition and higher colloidal stability to the absence in cyclic PiPrOx shells of a dilute outer part where the particle shells can interdigitate.
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Affiliation(s)
- Max Willinger
- Institute for Biologically Inspired
Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11, 1190 Vienna, Austria
| | - Erik Reimhult
- Institute for Biologically Inspired
Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11, 1190 Vienna, Austria
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11
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Petch JE, Gurnani P, Yilmaz G, Mastrotto F, Alexander C, Heeb S, Cámara M, Mantovani G. Combining Inducible Lectin Expression and Magnetic Glyconanoparticles for the Selective Isolation of Bacteria from Mixed Populations. ACS APPLIED MATERIALS & INTERFACES 2021; 13:19230-19243. [PMID: 33852268 DOI: 10.1021/acsami.1c00907] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The selective isolation of bacteria from mixed populations has been investigated in varied applications ranging from differential pathogen identification in medical diagnostics and food safety to the monitoring of microbial stress dynamics in industrial bioreactors. Selective isolation techniques are generally limited to the confinement of small populations in defined locations, may be unable to target specific bacteria, or rely on immunomagnetic separation, which is not universally applicable. In this proof-of-concept work, we describe a novel strategy combining inducible bacterial lectin expression with magnetic glyconanoparticles (MGNPs) as a platform technology to enable selective bacterial isolation from cocultures. An inducible mutant of the type 1 fimbriae, displaying the mannose-specific lectin FimH, was constructed in Escherichia coli allowing for "on-demand" glycan-binding protein presentation following external chemical stimulation. Binding to glycopolymers was only observed upon fimbrial induction and was specific for mannosylated materials. A library of MGNPs was produced via the grafting of well-defined catechol-terminal glycopolymers prepared by reversible addition-fragmentation chain transfer (RAFT) polymerization to magnetic nanoparticles. Thermal analysis revealed high functionalization (≥85% polymer by weight). Delivery of MGNPs to cocultures of fluorescently labeled bacteria followed by magnetic extraction resulted in efficient depletion of type 1 fimbriated target cells from wild-type or afimbriate E. coli. Extraction efficiency was found to be dependent on the molecular weight of the glycopolymers utilized to engineer the nanoparticles, with MGNPs decorated with shorter Dopa-(ManAA)50 mannosylated glycopolymers found to perform better than those assembled from a longer Dopa-(ManAA)200 analogue. The extraction efficiency of fimbriated E. coli was also improved when the counterpart strain did not harbor the genetic apparatus for the expression of the type 1 fimbriae. Overall, this work suggests that the modulation of the genetic apparatus encoding bacterial surface-associated lectins coupled with capture through MGNPs could be a versatile tool for the extraction of bacteria from mixed populations.
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Affiliation(s)
- Joshua E Petch
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K
- Nottingham University Biodiscovery Institute, National Biofilms Innovation Centre, School of Life Sciences, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Pratik Gurnani
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Gokhan Yilmaz
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Francesca Mastrotto
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via F. Marzolo 5, 35131 Padova, Italy
| | - Cameron Alexander
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Stephan Heeb
- Nottingham University Biodiscovery Institute, National Biofilms Innovation Centre, School of Life Sciences, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Miguel Cámara
- Nottingham University Biodiscovery Institute, National Biofilms Innovation Centre, School of Life Sciences, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Giuseppe Mantovani
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K
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12
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Huang S, Jiang S, Liu H, Cai J, Chen G, Xu J, Kai D, Bai P, Zhou R, Wang Z. Facile Synthesis of Iron Oxide Nanozymes for Synergistically Colorimetric and Magnetic Resonance Detection Strategy. J Biomed Nanotechnol 2021; 17:582-594. [DOI: 10.1166/jbn.2021.3049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Iron oxide nanomaterials with mimic enzymes activity have been paid more attention in the clinical diagnosis field. The modified surface molecules would influence the catalytic activity of nanozyme, which is worth studying. Furthermore, the traditional detection strategy is based on
colorimetric change of substrates, however, the optical signal is easy to be interfered in complex biological applications. In our research, an efficient and facile preparation strategy was developed to obtain functional artificial nanozymes. Herein, three kinds of surfactants, including citrate
acid, poly(ethylene glycol) bis (carboxymethyl) ether and tannic acid have been applied to modify these nanomaterials that showed uniform size, high soluble dispersity and stability. Furthermore, these nanozymes exhibited different peroxidase-like activity to catalyze the hydrogen peroxide
and 3,3′,5,5′-tetramethylbenzidine. More importantly, magnetic relaxation effect of iron oxide nanozymes was found to be changed during the catalytic reaction. In addition, the relationship between the magnetic signal of nanozymes and the substrate concentration showed a good linear
dependence. Combined with the natural enzymes, the magnetic detection of iron oxide nanozymes also exhibited excellent substrate specificity. On these bases, a dual-function specific assay was constructed and further used for glucose detection. In conclusion, this study demonstrated an efficient
iron oxide nanozymes preparation method and constructed a new synergistically colorimetric-magnetic diagnosis strategy.
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Affiliation(s)
- Shihui Huang
- School of Materials Science and Engineering, Center for Functional Biomaterials, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Shuqi Jiang
- Department of Radiology, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, P. R. China
| | - Hong Liu
- School of Materials Science and Engineering, Center for Functional Biomaterials, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Jiali Cai
- School of Materials Science and Engineering, Center for Functional Biomaterials, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Gengjia Chen
- School of Materials Science and Engineering, Center for Functional Biomaterials, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Junyao Xu
- Department of Hepatobiliary Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, P. R. China
| | - Dan Kai
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way, Innovis, No. 08-03, Singapore 138634 Singapore
| | - Pengli Bai
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R.China
| | - Ruiping Zhou
- Department of Stomatology, Shenzhen Yantian District People’s Hospital, Shenzhen 518081, P. R. China
| | - Zhiyong Wang
- School of Materials Science and Engineering, Center for Functional Biomaterials, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, P. R. China
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13
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Roma E, Corsi P, Willinger M, Leitner NS, Zirbs R, Reimhult E, Capone B, Gasperi T. Theoretical and Experimental Design of Heavy Metal-Mopping Magnetic Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:1386-1397. [PMID: 33389993 PMCID: PMC8021223 DOI: 10.1021/acsami.0c17759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
Herein, we show a comprehensive experimental, theoretical, and computational study aimed at designing macromolecules able to adsorb a cargo at the nanoscale. Specifically, we focus on the adsorption properties of star diblock copolymers, i.e., macromolecules made by a number f of H-T diblock copolymer arms tethered on a central core; the H monomeric heads, which are closer to the tethering point, are attractive toward a specific target, while the T monomeric tails are neutral to the cargo. Experimentally, we exploited the adaptability of poly(2-oxazoline)s (POxs) to realize block copolymer-coated nanoparticles with a proper functionalization able to interact with heavy metals and show or exhibit a thermoresponsive behavior in aqueous solution. We here present the synthesis and analysis of the properties of a high molecular mass block copolymer featured by (i) a polar side chain, capable of exploiting electrostatic and hydrophilic interaction with a predetermined cargo, and (ii) a thermoresponsive scaffold, able to change the interaction with the media by tuning the temperature. Afterward, the obtained polymers were grafted onto iron oxide nanoparticles and the thermoresponsive properties were investigated. Through isothermal titration calorimetry, we then analyzed the adsorption properties of the synthesized superparamagnetic nanoparticles for heavy metal ions in aqueous solution. Additionally, we use a combination of scaling theories and simulations to link equilibrium properties of the system to a prediction of the loading properties as a function of size ratio and effective interactions between the considered species. The comparison between experimental results on adsorption and theoretical prediction validates the whole design process.
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Affiliation(s)
- Elia Roma
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Pietro Corsi
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Max Willinger
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Nikolaus Simon Leitner
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Ronald Zirbs
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Erik Reimhult
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Barbara Capone
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Tecla Gasperi
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
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14
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Mahin J, Franck CO, Fanslau L, Patra HK, Mantle MD, Fruk L, Torrente-Murciano L. Green, scalable, low cost and reproducible flow synthesis of biocompatible PEG-functionalized iron oxide nanoparticles. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00239b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A continuous synthesis strategy enabling the large-scale and cost-effective synthesis and functionalization of iron oxide nanoparticles in a single setup is developed, leading to fully biocompatible and application-ready PEG coated nanoparticles.
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Affiliation(s)
- Julien Mahin
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Christoph O. Franck
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Luise Fanslau
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Hirak K. Patra
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Michael D. Mantle
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Ljiljana Fruk
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Laura Torrente-Murciano
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
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15
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Schroffenegger M, Leitner NS, Morgese G, Ramakrishna SN, Willinger M, Benetti EM, Reimhult E. Polymer Topology Determines the Formation of Protein Corona on Core-Shell Nanoparticles. ACS NANO 2020; 14:12708-12718. [PMID: 32865993 PMCID: PMC7596783 DOI: 10.1021/acsnano.0c02358] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 08/31/2020] [Indexed: 05/08/2023]
Abstract
Linear and cyclic poly(2-ethyl-2-oxazoline) (PEOXA) adsorbates provide excellent colloidal stability to superparamagnetic iron oxide nanoparticles (FexOy NPs) within protein-rich media. However, dense shells of linear PEOXA brushes cannot prevent weak but significant attractive interactions with human serum albumin. In contrast, their cyclic PEOXA counterparts quantitatively hinder protein adsorption, as demonstrated by a combination of dynamic light scattering and isothermal titration calorimetry. The cyclic PEOXA brushes generate NP shells that are denser and more compact than their linear counterparts, entirely preventing the formation of a protein corona as well as aggregation, even when the lower critical solution temperature of PEOXA in a physiological buffer is reached.
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Affiliation(s)
- Martina Schroffenegger
- Institute
for Biologically Inspired Materials, Department of Nanobiotechnology, University of Resources and Life Sciences, Muthgasse 11, A-1190 Vienna, Austria
| | - Nikolaus S. Leitner
- Institute
for Biologically Inspired Materials, Department of Nanobiotechnology, University of Resources and Life Sciences, Muthgasse 11, A-1190 Vienna, Austria
| | - Giulia Morgese
- Polymer
Surfaces Group, Laboratory for Surface Science and Technology, Department
of Materials, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, CH-8093 Zürich, Switzerland
| | - Shivaprakash N. Ramakrishna
- Polymer
Surfaces Group, Laboratory for Surface Science and Technology, Department
of Materials, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, CH-8093 Zürich, Switzerland
| | - Max Willinger
- Institute
for Biologically Inspired Materials, Department of Nanobiotechnology, University of Resources and Life Sciences, Muthgasse 11, A-1190 Vienna, Austria
| | - Edmondo M. Benetti
- Polymer
Surfaces Group, Laboratory for Surface Science and Technology, Department
of Materials, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, CH-8093 Zürich, Switzerland
| | - Erik Reimhult
- Institute
for Biologically Inspired Materials, Department of Nanobiotechnology, University of Resources and Life Sciences, Muthgasse 11, A-1190 Vienna, Austria
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16
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Avasthi A, Caro C, Pozo-Torres E, Leal MP, García-Martín ML. Magnetic Nanoparticles as MRI Contrast Agents. Top Curr Chem (Cham) 2020; 378:40. [PMID: 32382832 PMCID: PMC8203530 DOI: 10.1007/s41061-020-00302-w] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 03/18/2020] [Indexed: 12/14/2022]
Abstract
Iron oxide nanoparticles (IONPs) have emerged as a promising alternative to conventional contrast agents (CAs) for magnetic resonance imaging (MRI). They have been extensively investigated as CAs due to their high biocompatibility and excellent magnetic properties. Furthermore, the ease of functionalization of their surfaces with different types of ligands (antibodies, peptides, sugars, etc.) opens up the possibility of carrying out molecular MRI. Thus, IONPs functionalized with epithelial growth factor receptor antibodies, short peptides, like RGD, or aptamers, among others, have been proposed for the diagnosis of various types of cancer, including breast, stomach, colon, kidney, liver or brain cancer. In addition to cancer diagnosis, different types of IONPs have been developed for other applications, such as the detection of brain inflammation or the early diagnosis of thrombosis. This review addresses key aspects in the development of IONPs for MRI applications, namely, synthesis of the inorganic core, functionalization processes to make IONPs biocompatible and also to target them to specific tissues or cells, and finally in vivo studies in animal models, with special emphasis on tumor models.
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Affiliation(s)
- Ashish Avasthi
- BIONAND - Centro Andaluz de Nanomedicina y Biotecnología, Junta de Andalucía-Universidad de Málaga, C/Severo Ochoa, 35, 29590, Málaga, Spain
| | - Carlos Caro
- BIONAND - Centro Andaluz de Nanomedicina y Biotecnología, Junta de Andalucía-Universidad de Málaga, C/Severo Ochoa, 35, 29590, Málaga, Spain
| | - Esther Pozo-Torres
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012, Seville, Spain
| | - Manuel Pernia Leal
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012, Seville, Spain.
| | - María Luisa García-Martín
- BIONAND - Centro Andaluz de Nanomedicina y Biotecnología, Junta de Andalucía-Universidad de Málaga, C/Severo Ochoa, 35, 29590, Málaga, Spain. .,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Málaga, Spain.
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17
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Synthesis, characterization and in vitro toxicity evaluation of doxorubicin-loaded magnetoliposomes on MCF-7 breast cancer cell line. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101447] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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18
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Yu J, Nap RJ, Szleifer I, Wong JY. Effect of Polymer Surface Modification of Superparamagnetic Iron Oxide Nanoparticle Dispersions in High Salinity Environments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15864-15871. [PMID: 31353909 DOI: 10.1021/acs.langmuir.9b01944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Superparamagnetic nanoparticles (SPIONs) can be used as nuclear magnetic resonance (NMR) signal enhancement agents for petroleum exploration. This enhancement effect is uniform if SPIONs are monodisperse in size and in composition; yet it is challenging to synthesize monodisperse particles that do not aggregate in high salinity petroleum brine. Here, we report a method to synthesize individual SPIONs coated with tunable surface coating densities of poly(2-acrylamido-2-methyl-1-propanesulfonic acid (pAMPS) with a catechol end-group (pAMPS*). To establish parameters under which pAMPS*-coated SPIONS do not aggregate, we compared computational predictions with experimental results for variations in pAMPS* chain length and surface coverage. Using this combined theoretical and experimental approach, we show that singly dispersed SPIONs remained stabilized in petroleum brine for up to 75 h with high surface density pAMPS*.
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Affiliation(s)
- Jin Yu
- Division of Materials Science and Engineering , Boston University , Boston Massachusetts 02215 United States
| | - Rikkert J Nap
- Department of Biomedical Engineering and Chemistry of Life Processes Institute , Northwestern University , Evanston , Illinois 60208 United States
| | - Igal Szleifer
- Department of Biomedical Engineering and Chemistry of Life Processes Institute , Northwestern University , Evanston , Illinois 60208 United States
| | - Joyce Y Wong
- Division of Materials Science and Engineering , Boston University , Boston Massachusetts 02215 United States
- Department of Biomedical Engineering , Boston University , Boston Massachusetts 02215 United States
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19
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Chakraborty S, Misra SK. A comparative analysis of dialysis based separation methods for assessing copper oxide nanoparticle solubility. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.enmm.2019.100258] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Gal N, Charwat V, Städler B, Reimhult E. Poly(ethylene glycol) Grafting of Nanoparticles Prevents Uptake by Cells and Transport Through Cell Barrier Layers Regardless of Shear Flow and Particle Size. ACS Biomater Sci Eng 2019; 5:4355-4365. [PMID: 33438401 DOI: 10.1021/acsbiomaterials.9b00611] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
It has long been a central tenet of biomedical research that coating of nanoparticles with hydrated polymers can improve their performance in biomedical applications. However, the efficacy of the approach in vivo is still debated. In vitro model systems to test the performance of engineered nanoparticles for in vivo applications often use nonrepresentative cell lines and conditions for uptake and toxicity tests. We use our platform of monodisperse iron oxide nanoparticles densely grafted with nitrodopamide-poly(ethylene glycol) (PEG) to probe cell interactions with a set of cell types and culture conditions that are relevant for applications in which nanoparticles are injected into the bloodstream. In the past, these particles have proved to have excellent stability and negligible interaction with proteins and membranes under physiological conditions. We test the influence of flow on the uptake of nanoparticles. We also investigate the transport through endothelial barrier cell layers, as well as the effect that PEG-grafted iron oxide nanoparticles have on cell layers relevant for nanoparticles injected into the bloodstream. Our results show that the dense PEG brush and resulting lack of nonspecific protein and membrane interaction lead to negligible cell uptake, toxicity, and transport across barrier layers. These results contrast with far less well-defined polymer-coated nanoparticles that tend to aggregate and consequently strongly interact with cells, for example, by endocytosis.
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Affiliation(s)
- Noga Gal
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus, Denmark
| | | | - Brigitte Städler
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus, Denmark
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21
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Lassenberger A, Scheberl A, Batchu KC, Cristiglio V, Grillo I, Hermida-Merino D, Reimhult E, Baccile N. Biocompatible Glyconanoparticles by Grafting Sophorolipid Monolayers on Monodispersed Iron Oxide Nanoparticles. ACS APPLIED BIO MATERIALS 2019; 2:3095-3107. [DOI: 10.1021/acsabm.9b00427] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrea Lassenberger
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Institute for Biologically Inspired Materials, Muthgasse 11/II, 1190 Vienna, Austria
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble 38042 CEDEX 9, France
| | - Andrea Scheberl
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Institute for Biologically Inspired Materials, Muthgasse 11/II, 1190 Vienna, Austria
| | | | - Viviana Cristiglio
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble 38042 CEDEX 9, France
| | - Isabelle Grillo
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble 38042 CEDEX 9, France
| | - Daniel Hermida-Merino
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble 38042 CEDEX 9, France
| | - Erik Reimhult
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Institute for Biologically Inspired Materials, Muthgasse 11/II, 1190 Vienna, Austria
| | - Niki Baccile
- Sorbonne Université, Centre National de la Recherche Scientifique, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP, Paris F-75005, France
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22
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Reimhult E, Schroffenegger M, Lassenberger A. Design Principles for Thermoresponsive Core-Shell Nanoparticles: Controlling Thermal Transitions by Brush Morphology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:7092-7104. [PMID: 31035760 PMCID: PMC6551573 DOI: 10.1021/acs.langmuir.9b00665] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/17/2019] [Indexed: 05/15/2023]
Abstract
In this feature article, we summarize our recent work on understanding and controlling the thermal behavior of nanoparticles grafted with thermoresponsive polymer shells. Precision synthesis of monodisperse superparamagnetic iron oxide nanocrystals was combined with irreversible dense grafting of nitrodopamide-anchored thermoresponsive polymer chains. We provide an overview of how the dense and stable grafting of biomedically relevant polymers, including poly(ethylene glycol), poly( N-isopropylacrylamide), polysarcosin, and polyoxazolines, can be achieved. This platform has made it possible for us to demonstrate that the polymer brush geometry, as defined by the nanoparticle core and relative polymer brush size, determines the thermal transitions of the polymer brush. We furthermore summarize our work on how the polymer shell transitions and nanoparticle aggregation can be tuned. With the independent variation of the core and the shell, we can optimize and precisely control the thermally controlled solubility of our system. Finally, our feature article gives examples relevant to current and future applications. We show how the thermal response of the shell influences the nanoparticle performance in biological fluids and interactions with proteins and cells, also under purely magnetic actuation of the nanoparticles through the superparamagnetic iron oxide core.
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Affiliation(s)
- Erik Reimhult
- Institute
for Biologically Inspired Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria
| | - Martina Schroffenegger
- Institute
for Biologically Inspired Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria
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23
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Schroffenegger M, Reimhult E. Thermoresponsive Core-Shell Nanoparticles: Does Core Size Matter? MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1654. [PMID: 30205481 PMCID: PMC6163620 DOI: 10.3390/ma11091654] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 08/28/2018] [Accepted: 09/03/2018] [Indexed: 11/17/2022]
Abstract
Nanoparticles grafted with a dense brush of hydrophilic polymers exhibit high colloidal stability. However, reversible aggregation can be triggered by an increase in temperature if the polymer is thermoresponsive, as the polymer shell partly loses its hydration. We investigate the role of nanoparticle curvature on the critical solution temperature (CST) of grafted poly(2-isopropyl-2-oxazoline) (PiPOx) and critical flocculation temperature (CFT) of the core-shell nanoparticle dispersion. Cores with diameters ranging from 5 to 21 nm were studied by temperature-cycled dynamic light scattering and differential scanning calorimetry over a large range of concentrations. We show that core size and curvature only have a minor influence on particle aggregation (CFT and cluster size), while they have major influence on the CST of the polymer shell. The densely grafted shells exhibit three distinct solvation transitions, the relative contributions of each is controlled by the core curvature. We link these transitions to different polymer density regimes within the spherical brush and demonstrate that the CST of the innermost part of the brush coincides with the CFT of the particle dispersion.
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Affiliation(s)
- Martina Schroffenegger
- University of Natural Resources and Life Sciences Vienna, Muthgasse 11, 1190 Vienna, Austria.
| | - Erik Reimhult
- University of Natural Resources and Life Sciences Vienna, Muthgasse 11, 1190 Vienna, Austria.
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24
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Thapa B, Diaz-Diestra D, Santiago-Medina C, Kumar N, Tu K, Beltran-Huarac J, Jadwisienczak WM, Weiner BR, Morell G. T 1- and T 2-weighted Magnetic Resonance Dual Contrast by Single Core Truncated Cubic Iron Oxide Nanoparticles with Abrupt Cellular Internalization and Immune Evasion. ACS APPLIED BIO MATERIALS 2018; 1:79-89. [PMID: 30094416 PMCID: PMC6077774 DOI: 10.1021/acsabm.8b00016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 06/15/2018] [Indexed: 11/28/2022]
Abstract
![]()
Conventional T1- or T2-weighted single mode
contrast-enhanced magnetic resonance imaging (MRI) may produce false
results. Thereby, there is a need to develop dual contrast agents,
T1- and T2-weighted, for more accurate MRI imaging.
The dual contrast agents should possess high magnetic resonance (MR)
relaxivities, targeted tumor linking, and minimum recognition by the
immune system. We have developed nitrodopamine-PEG grafted single
core truncated cubic iron oxide nanoparticles (ND-PEG-tNCIOs) capable
of producing marked dual contrasts in MRI with enhanced longitudinal
and transverse relaxivities of 32 ± 1.29 and 791 ± 38.39
mM–1 s–1, respectively. Furthermore,
the ND-PEG-tNCIOs show excellent colloidal stability in physiological
buffers and higher cellular internalization in cancerous cells than
in phagocytic cells, indicating the immune evasive capability of the
nanoparticles. These findings indicate that tNCIOs are strong candidates
for dual contrast MRI imaging, which is vital for noninvasive real-time
detection of nascent cancer cells in vivo and for monitoring stem
cells transplants.
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Affiliation(s)
- Bibek Thapa
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Physics, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Daysi Diaz-Diestra
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Chemistry, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Carlene Santiago-Medina
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Biology, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Nitu Kumar
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States
| | - Kaixiong Tu
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Juan Beltran-Huarac
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Environmental Health, Harvard University, Boston, Massachusetts 02115-5810, United States
| | - Wojciech M Jadwisienczak
- School of Electrical Engineering and Computer Science, Ohio University, Athens, Ohio 45701-2769, United States
| | - Brad R Weiner
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Chemistry, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Gerardo Morell
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Physics, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
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25
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Gal N, Schroffenegger M, Reimhult E. Stealth Nanoparticles Grafted with Dense Polymer Brushes Display Adsorption of Serum Protein Investigated by Isothermal Titration Calorimetry. J Phys Chem B 2018; 122:5820-5834. [PMID: 29726682 PMCID: PMC5994724 DOI: 10.1021/acs.jpcb.8b02338] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/24/2018] [Indexed: 01/10/2023]
Abstract
Core-shell nanoparticles receive much attention for their current and potential applications in life sciences. Commonly, a dense shell of hydrated polymer, a polymer brush, is grafted to improve colloidal stability of functional nanoparticles and to prevent protein adsorption, aggregation, cell recognition, and uptake. Until recently, it was widely assumed that a polymer brush shell indeed prevents strong association of proteins and that this leads to their superior "stealth" properties in vitro and in vivo. We show using T-dependent isothermal titration calorimetry on well-characterized monodisperse superparamagnetic iron oxide nanoparticles with controlled dense stealth polymer brush shells that "stealth" core-shell nanoparticles display significant attractive exothermic and enthalpic interactions with serum proteins, despite having excellent colloidal stability and negligible nonspecific cell uptake. This observation is at room temperature shown to depend only weakly on variation of iron oxide core diameter and type of grafted stealth polymer: poly(ethylene glycol), poly(ethyl oxazoline), poly(isopropyl oxazoline), and poly( N-isopropyl acrylamide). Polymer brush shells with a critical solution temperature close to body temperature showed a strong temperature dependence in their interactions with proteins with a significant increase in protein binding energy with increased temperature. The stoichiometry of interaction is estimated to be near 1:1 for PEGylated nanoparticles and up to 10:1 for larger thermoresponsive nanoparticles, whereas the average free energy of interaction is enthalpically driven and comparable to a weak hydrogen bond.
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Affiliation(s)
- Noga Gal
- Institute for Biologically Inspired
Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Martina Schroffenegger
- Institute for Biologically Inspired
Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Erik Reimhult
- Institute for Biologically Inspired
Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
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26
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Kurzhals S, Schroffenegger M, Gal N, Zirbs R, Reimhult E. Influence of Grafted Block Copolymer Structure on Thermoresponsiveness of Superparamagnetic Core-Shell Nanoparticles. Biomacromolecules 2017; 19:1435-1444. [PMID: 29161516 PMCID: PMC5954351 DOI: 10.1021/acs.biomac.7b01403] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
![]()
The
morphology and topology of thermoresponsive polymers have a
strong impact on their responsive properties. Grafting onto spherical
particles has been shown to reduce responsiveness and transition temperatures;
grafting of block copolymers has shown that switchable or retained
wettability of a surface or particle during desolvation of one block
can take place. Here, doubly thermoresponsive block copolymers were
grafted onto spherical, monodisperse, and superparamagnetic iron oxide
nanoparticles to investigate the effect of thermal desolvation on
spherical brushes of block copolymers. By inverting the block order,
the influence of core proximity on the responsive properties of the
individual blocks could be studied as well as their relative influence
on the nanoparticle colloidal stability. The inner block was shown
to experience a stronger reduction in transition temperature and transition
enthalpy compared to the outer block. Still, the outer block also
experiences a significant reduction in responsiveness due to the restricted
environment in the nanoparticle shell compared to that of the free
polymer state. The demonstrated pronounced distance dependence importantly
implies the possibility, but also the necessity, to radially tailor
polymer hydration transitions for applications such as drug delivery,
hyperthermia, and biotechnological separation for which thermally
responsive nanoparticles are being developed.
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Affiliation(s)
- Steffen Kurzhals
- Institute for Biologically Inspired Materials, Department of Nanobiotechnology , University of Natural Resources and Life Sciences, Vienna , Muthgasse 11 , 1190 Vienna , Austria
| | - Martina Schroffenegger
- Institute for Biologically Inspired Materials, Department of Nanobiotechnology , University of Natural Resources and Life Sciences, Vienna , Muthgasse 11 , 1190 Vienna , Austria
| | - Noga Gal
- Institute for Biologically Inspired Materials, Department of Nanobiotechnology , University of Natural Resources and Life Sciences, Vienna , Muthgasse 11 , 1190 Vienna , Austria
| | - Ronald Zirbs
- Institute for Biologically Inspired Materials, Department of Nanobiotechnology , University of Natural Resources and Life Sciences, Vienna , Muthgasse 11 , 1190 Vienna , Austria
| | - Erik Reimhult
- Institute for Biologically Inspired Materials, Department of Nanobiotechnology , University of Natural Resources and Life Sciences, Vienna , Muthgasse 11 , 1190 Vienna , Austria
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27
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Kertmen A, Torruella P, Coy E, Yate L, Nowaczyk G, Gapiński J, Vogt C, Toprak M, Estradé S, Peiró F, Milewski S, Jurga S, Andruszkiewicz R. Acetate-Induced Disassembly of Spherical Iron Oxide Nanoparticle Clusters into Monodispersed Core-Shell Structures upon Nanoemulsion Fusion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10351-10365. [PMID: 28895402 PMCID: PMC5730226 DOI: 10.1021/acs.langmuir.7b02743] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/11/2017] [Indexed: 05/21/2023]
Abstract
It has been long known that the physical encapsulation of oleic acid-capped iron oxide nanoparticles (OA-IONPs) with the cetyltrimethylammonium (CTA+) surfactant induces the formation of spherical iron oxide nanoparticle clusters (IONPCs). However, the behavior and functional properties of IONPCs in chemical reactions have been largely neglected and are still not well-understood. Herein, we report an unconventional ligand-exchange function of IONPCs activated when dispersed in an ethyl acetate/acetate buffer system. The ligand exchange can successfully transform hydrophobic OA-IONP building blocks of IONPCs into highly hydrophilic, acetate-capped iron oxide nanoparticles (Ac-IONPs). More importantly, we demonstrate that the addition of silica precursors (tetraethyl orthosilicate and 3-aminopropyltriethoxysilane) to the acetate/oleate ligand-exchange reaction of the IONPs induces the disassembly of the IONPCs into monodispersed iron oxide-acetate-silica core-shell-shell (IONPs@acetate@SiO2) nanoparticles. Our observations evidence that the formation of IONPs@acetate@SiO2 nanoparticles is initiated by a unique micellar fusion mechanism between the Pickering-type emulsions of IONPCs and nanoemulsions of silica precursors formed under ethyl acetate buffered conditions. A dynamic rearrangement of the CTA+-oleate bilayer on the IONPC surfaces is proposed to be responsible for the templating process of the silica shells around the individual IONPs. In comparison to previously reported methods in the literature, our work provides a much more detailed experimental evidence of the silica-coating mechanism in a nanoemulsion system. Overall, ethyl acetate is proven to be a very efficient agent for an effortless preparation of monodispersed IONPs@acetate@SiO2 and hydrophilic Ac-IONPs from IONPCs.
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Affiliation(s)
- Ahmet Kertmen
- Department
of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology, G. Narutowicza 11/12, 80-233 Gdansk, Poland
- NanoBioMedical
Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
- Department
of Applied Physics, KTH-Royal Institute
of Technology, Roslagstullsbacken
21, SE-106 91 Stockholm, Sweden
| | - Pau Torruella
- LENS-MIND-IN2UB,
Departament d’Electronica, Universitat
de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Emerson Coy
- NanoBioMedical
Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
| | - Luis Yate
- CIC
biomaGUNE, Paseo Miramón 182, 20009 Donostia—San Sebastian, Spain
| | - Grzegorz Nowaczyk
- NanoBioMedical
Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
| | - Jacek Gapiński
- NanoBioMedical
Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
| | - Carmen Vogt
- Department
of Applied Physics, KTH-Royal Institute
of Technology, Roslagstullsbacken
21, SE-106 91 Stockholm, Sweden
| | - Muhammet Toprak
- Department
of Applied Physics, KTH-Royal Institute
of Technology, Roslagstullsbacken
21, SE-106 91 Stockholm, Sweden
| | - Sonia Estradé
- LENS-MIND-IN2UB,
Departament d’Electronica, Universitat
de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Francesca Peiró
- LENS-MIND-IN2UB,
Departament d’Electronica, Universitat
de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Sławomir Milewski
- Department
of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology, G. Narutowicza 11/12, 80-233 Gdansk, Poland
| | - Stefan Jurga
- NanoBioMedical
Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
| | - Ryszard Andruszkiewicz
- Department
of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology, G. Narutowicza 11/12, 80-233 Gdansk, Poland
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28
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Kurzhals S, Pretzner B, Reimhult E, Zirbs R. Thermoresponsive Polypeptoid-Coated Superparamagnetic Iron Oxide Nanoparticles by Surface-Initiated Polymerization. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700116] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Steffen Kurzhals
- Institute for Biologically Inspired Materials; Department of Nanobiotechnology; University of Natural Resources and Life Sciences, Vienna; Muthgasse 11 1190 Vienna Austria
| | - Barbara Pretzner
- Institute for Biologically Inspired Materials; Department of Nanobiotechnology; University of Natural Resources and Life Sciences, Vienna; Muthgasse 11 1190 Vienna Austria
| | - Erik Reimhult
- Institute for Biologically Inspired Materials; Department of Nanobiotechnology; University of Natural Resources and Life Sciences, Vienna; Muthgasse 11 1190 Vienna Austria
| | - Ronald Zirbs
- Institute for Biologically Inspired Materials; Department of Nanobiotechnology; University of Natural Resources and Life Sciences, Vienna; Muthgasse 11 1190 Vienna Austria
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29
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Morgese G, Shirmardi Shaghasemi B, Causin V, Zenobi-Wong M, Ramakrishna SN, Reimhult E, Benetti EM. Next-Generation Polymer Shells for Inorganic Nanoparticles are Highly Compact, Ultra-Dense, and Long-Lasting Cyclic Brushes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700196] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Giulia Morgese
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
- Cartilage Engineering and Regeneration Laboratory; ETH Zürich; Department of Health Sciences and Technology; ETH Zürich; Zürich Switzerland
| | - Behzad Shirmardi Shaghasemi
- Institute for Biologically Inspired Materials; Department of Nanobiotechnology; University of Natural Resources and Life Sciences; Vienna Austria
| | - Valerio Causin
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; Padova Italy
| | - Marcy Zenobi-Wong
- Cartilage Engineering and Regeneration Laboratory; ETH Zürich; Department of Health Sciences and Technology; ETH Zürich; Zürich Switzerland
| | | | - Erik Reimhult
- Institute for Biologically Inspired Materials; Department of Nanobiotechnology; University of Natural Resources and Life Sciences; Vienna Austria
| | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
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30
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Morgese G, Shirmardi Shaghasemi B, Causin V, Zenobi-Wong M, Ramakrishna SN, Reimhult E, Benetti EM. Next-Generation Polymer Shells for Inorganic Nanoparticles are Highly Compact, Ultra-Dense, and Long-Lasting Cyclic Brushes. Angew Chem Int Ed Engl 2017; 56:4507-4511. [DOI: 10.1002/anie.201700196] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 02/15/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Giulia Morgese
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
- Cartilage Engineering and Regeneration Laboratory; ETH Zürich; Department of Health Sciences and Technology; ETH Zürich; Zürich Switzerland
| | - Behzad Shirmardi Shaghasemi
- Institute for Biologically Inspired Materials; Department of Nanobiotechnology; University of Natural Resources and Life Sciences; Vienna Austria
| | - Valerio Causin
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; Padova Italy
| | - Marcy Zenobi-Wong
- Cartilage Engineering and Regeneration Laboratory; ETH Zürich; Department of Health Sciences and Technology; ETH Zürich; Zürich Switzerland
| | | | - Erik Reimhult
- Institute for Biologically Inspired Materials; Department of Nanobiotechnology; University of Natural Resources and Life Sciences; Vienna Austria
| | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
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31
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Kurzhals S, Gal N, Zirbs R, Reimhult E. Controlled aggregation and cell uptake of thermoresponsive polyoxazoline-grafted superparamagnetic iron oxide nanoparticles. NANOSCALE 2017; 9:2793-2805. [PMID: 28155937 DOI: 10.1039/c6nr08654c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Hydrophilic polymer-coated iron oxide nanoparticles are potential materials for a plethora of applications in the biotechnological field. Typical such polymers, e.g. dextran or poly(ethylene glycol), lack the ability to tailor the biological response to an environmental trigger, while common responsive polymers such as poly(N-isopropylacrylamide) or poly(acrylic acid) are not suitable for biomedical applications. We present the synthesis and characterization of superparamagnetic iron oxide nanoparticles with thermoresponsive polyoxazoline brushes grafted at unprecedented density using nitrodopamine anchor chemistry. Reversible aggregation/deaggregation is observed in water and biological medium, confirming control over the colloidal stability. Thermal switching of the solubility could only be achieved by global heating of the sample, while local magnetothermal heating did not produce a sufficiently strong temperature gradient through the brush. Varying the polymer composition allows for tuning of the lower critical solution temperature (LCST) as well as the average nanoparticle cluster size obtained upon heating. The LCST of polyoxazolines and the thermal colloidal stability are shown to be greatly affected by ion concentration, by polymer grafting density and also by the presence of serum protein; this shows that transition temperatures of free polymers in water can be very misleading for the design of polymer-coated nanomaterials for biomedical applications. Finally, the thermoresponsive SPION are shown to be non-cytotoxic and with a low cell uptake scaling with the hydration of the polymer brush, which is tuned by the polymer composition. Thus, we demonstrate that pozylated nanoparticles provide the advantages of PEG- and PNIPAM-grafted nanoparticles, but provide a tunable and more easily functionalizable platform for further development.
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Affiliation(s)
- Steffen Kurzhals
- Institute for Biologically inspired materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, 1190 Vienna, Austria.
| | - Noga Gal
- Institute for Biologically inspired materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, 1190 Vienna, Austria.
| | - Ronald Zirbs
- Institute for Biologically inspired materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, 1190 Vienna, Austria.
| | - Erik Reimhult
- Institute for Biologically inspired materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, 1190 Vienna, Austria.
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32
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Lassenberger A, Scheberl A, Stadlbauer A, Stiglbauer A, Helbich T, Reimhult E. Individually Stabilized, Superparamagnetic Nanoparticles with Controlled Shell and Size Leading to Exceptional Stealth Properties and High Relaxivities. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3343-3353. [PMID: 28071883 PMCID: PMC5290491 DOI: 10.1021/acsami.6b12932] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 01/10/2017] [Indexed: 05/21/2023]
Abstract
Superparamagnetic iron oxide nanoparticles (SPION) have received immense interest for biomedical applications, with the first clinical application as negative contrast agent in magnetic resonance imaging (MRI). However, the first generation MRI contrast agents with dextran-enwrapped, polydisperse iron oxide nanoparticle clusters are limited to imaging of the liver and spleen; this is related to their poor colloidal stability in biological media and inability to evade clearance by the reticuloendothelial system. We investigate the qualitatively different performance of a new generation of individually PEG-grafted core-shell SPION in terms of relaxivity and cell uptake and compare them to benchmark iron oxide contrast agents. These PEG-grafted SPION uniquely enable relaxivity measurements in aqueous suspension without aggregation even at 9.4 T magnetic fields due to their extraordinary colloidal stability. This allows for determination of the size-dependent scaling of relaxivity, which is shown to follow a d2 dependence for identical core-shell structures. The here introduced core-shell SPION with ∼15 nm core diameter yield a higher R2 relaxivity than previous clinically used contrast agents as well as previous generations of individually stabilized SPION. The colloidal stability extends to control over evasion of macrophage clearance and stimulated uptake by SPION functionalized with protein ligands, which is a key requirement for targeted MRI.
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Affiliation(s)
- Andrea Lassenberger
- Department of Nanobiotechnology,
Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria
| | - Andrea Scheberl
- Department of Nanobiotechnology,
Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria
| | - Andreas Stadlbauer
- Department of Biomedical
Imaging and Image-guided Therapy, Division of Molecular and Gender
Imaging, Medical University Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
- Department of Neurosurgery, University
of Erlangen-Nürnberg, Schwabachanlage 6, 91054 Erlangen, Germany
| | - Alexander Stiglbauer
- Department of Biomedical
Imaging and Image-guided Therapy, Division of Molecular and Gender
Imaging, Medical University Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Thomas Helbich
- Department of Biomedical
Imaging and Image-guided Therapy, Division of Molecular and Gender
Imaging, Medical University Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Erik Reimhult
- Department of Nanobiotechnology,
Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria
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33
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Gal N, Lassenberger A, Herrero-Nogareda L, Scheberl A, Charwat V, Kasper C, Reimhult E. Interaction of Size-Tailored PEGylated Iron Oxide Nanoparticles with Lipid Membranes and Cells. ACS Biomater Sci Eng 2017; 3:249-259. [DOI: 10.1021/acsbiomaterials.6b00311] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Noga Gal
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Andrea Lassenberger
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Laia Herrero-Nogareda
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Andrea Scheberl
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Verena Charwat
- Department
of Biotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Cornelia Kasper
- Department
of Biotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Erik Reimhult
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
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34
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Gharbi K, Salles F, Mathieu P, Amiens C, Collière V, Coppel Y, Philippot K, Fontaine L, Montembault V, Smiri LS, Ciuculescu-Pradines D. Alkyl phosphonic acid-based ligands as tools for converting hydrophobic iron nanoparticles into water soluble iron–iron oxide core–shell nanoparticles. NEW J CHEM 2017. [DOI: 10.1039/c7nj02482g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Transfer of Fe nanoparticles into water using phosphonates.
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35
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Galli M, Guerrini A, Cauteruccio S, Thakare P, Dova D, Orsini F, Arosio P, Carrara C, Sangregorio C, Lascialfari A, Maggioni D, Licandro E. Superparamagnetic iron oxide nanoparticles functionalized by peptide nucleic acids. RSC Adv 2017. [DOI: 10.1039/c7ra00519a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Hydrophilic SPION were decorated with PNA decamers by SH/maleimide clickreaction as potential MRI and hyperthermia agents, and PNA carriers.
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Affiliation(s)
- Marco Galli
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Andrea Guerrini
- LA.M.M. c/o Dipartimento di Chimica
- Università degli Studi di Firenze
- 50019 Sesto F.no (FI)
- Italy
| | - Silvia Cauteruccio
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Pramod Thakare
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Davide Dova
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Francesco Orsini
- Dipartimento di Fisica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Paolo Arosio
- Dipartimento di Fisica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Claudio Carrara
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | | | | | - Daniela Maggioni
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
- Consorzio INSTM
| | - Emanuela Licandro
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
- Consorzio INSTM
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36
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Crespo KA, Baronetti JL, Quinteros MA, Páez PL, Paraje MG. Intra- and Extracellular Biosynthesis and Characterization of Iron Nanoparticles from Prokaryotic Microorganisms with Anticoagulant Activity. Pharm Res 2016; 34:591-598. [PMID: 27995524 DOI: 10.1007/s11095-016-2084-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/08/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND The use of microorganisms for the synthesis of nanoparticles (NPs) is relatively new in basic research and technology areas. PURPOSE This work was conducted to optimized the biosynthesis of iron NPs intra- and extracellular by Escherichia coli or Pseudomonas aeruginosa and to evaluate their anticoagulant activity. STUDY DESIGN/METHODS The structures and properties of the iron NPs were investigated by Ultraviolet-visible (UV-vis) spectroscopy, Zeta potential, Dynamic light scattering (DLS), Field emission scanning electron microscope (FESEM)/ Energy dispersive X-ray (EDX) and transmission electron microscopy (TEM). Anticoagulant activity was determined by conducting trials of Thrombin Time (TT), Activated Partial Prothrombin Time (APTT) and Prothrombin Time (PT). RESULTS UV-vis spectrum of the aqueous medium containing iron NPs showed a peak at 275 nm. The forming of iron NPs was confirmed by FESEM/ EDX, and TEM. The morphology was spherical shapes mostly with low polydispersity and the average particle diameter was 23 ± 1 nm. Iron NPs showed anticoagulant activity by the activation of extrinsic pathway. CONCLUSION The eco-friendly process of biosynthesis of iron NPs employing prokaryotic microorganisms presents a good anticoagulant activity. This could be explored as promising candidates for a variety of biomedical and pharmaceutical applications.
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Affiliation(s)
- Karina A Crespo
- Instituto Multidisciplinario de Biología Vegetal (IMBIV) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - José L Baronetti
- Instituto Multidisciplinario de Biología Vegetal (IMBIV) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Cátedra de Microbiología, Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 299, Córdoba, Argentina
| | - Melisa A Quinteros
- Instituto Multidisciplinario de Biología Vegetal (IMBIV) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Córdoba, Argentina
| | - Paulina L Páez
- Unidad de Tecnología Farmacéutica (UNITEFA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Córdoba, Argentina
| | - María G Paraje
- Instituto Multidisciplinario de Biología Vegetal (IMBIV) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina. .,Cátedra de Microbiología, Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 299, Córdoba, Argentina.
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