1
|
Zhu K, Gispert Contamina I, Ces O, Barter LMC, Hindley JW, Elani Y. Magnetic Modulation of Biochemical Synthesis in Synthetic Cells. J Am Chem Soc 2024; 146:13176-13182. [PMID: 38691505 PMCID: PMC11099998 DOI: 10.1021/jacs.4c00845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/19/2024] [Accepted: 04/09/2024] [Indexed: 05/03/2024]
Abstract
Synthetic cells can be constructed from diverse molecular components, without the design constraints associated with modifying 'living' biological systems. This can be exploited to generate cells with abiotic components, creating functionalities absent in biology. One example is magnetic responsiveness, the activation and modulation of encapsulated biochemical processes using a magnetic field, which is absent from existing synthetic cell designs. This is a critical oversight, as magnetic fields are uniquely bio-orthogonal, noninvasive, and highly penetrative. Here, we address this by producing artificial magneto-responsive organelles by coupling thermoresponsive membranes with hyperthermic Fe3O4 nanoparticles and embedding them in synthetic cells. Combining these systems enables synthetic cell microreactors to be built using a nested vesicle architecture, which can respond to alternating magnetic fields through in situ enzymatic catalysis. We also demonstrate the modulation of biochemical reactions by using different magnetic field strengths and the potential to tune the system using different lipid compositions. This platform could unlock a wide range of applications for synthetic cells as programmable micromachines in biomedicine and biotechnology.
Collapse
Affiliation(s)
- Karen
K. Zhu
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City, London W12
0BZ, U.K.
- Department
of Chemical Engineering, Imperial College
London, South Kensington, London SW7 2AZ, U.K.
- fabriCELL, Imperial
College London, Molecular Sciences Research
Hub, White City, London W12 0BZ, U.K.
- Institute
of Chemical Biology, Imperial College London,
Molecular Sciences Research Hub, White City, London W12
0BZ, U.K.
| | - Ignacio Gispert Contamina
- Department
of Chemical Engineering, Imperial College
London, South Kensington, London SW7 2AZ, U.K.
- fabriCELL, Imperial
College London, Molecular Sciences Research
Hub, White City, London W12 0BZ, U.K.
| | - Oscar Ces
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City, London W12
0BZ, U.K.
- fabriCELL, Imperial
College London, Molecular Sciences Research
Hub, White City, London W12 0BZ, U.K.
- Institute
of Chemical Biology, Imperial College London,
Molecular Sciences Research Hub, White City, London W12
0BZ, U.K.
| | - Laura M. C. Barter
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City, London W12
0BZ, U.K.
- Institute
of Chemical Biology, Imperial College London,
Molecular Sciences Research Hub, White City, London W12
0BZ, U.K.
| | - James W. Hindley
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City, London W12
0BZ, U.K.
- fabriCELL, Imperial
College London, Molecular Sciences Research
Hub, White City, London W12 0BZ, U.K.
- Institute
of Chemical Biology, Imperial College London,
Molecular Sciences Research Hub, White City, London W12
0BZ, U.K.
| | - Yuval Elani
- Department
of Chemical Engineering, Imperial College
London, South Kensington, London SW7 2AZ, U.K.
- fabriCELL, Imperial
College London, Molecular Sciences Research
Hub, White City, London W12 0BZ, U.K.
| |
Collapse
|
2
|
Sikorski J, Matczuk M, Stępień M, Ogórek K, Ruzik L, Jarosz M. Fe 3O 4SPIONs in cancer theranostics-structure versus interactions with proteins and methods of their investigation. NANOTECHNOLOGY 2024; 35:212001. [PMID: 38387086 DOI: 10.1088/1361-6528/ad2c54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/22/2024] [Indexed: 02/24/2024]
Abstract
As the second leading cause of death worldwide, neoplastic diseases are one of the biggest challenges for public health care. Contemporary medicine seeks potential tools for fighting cancer within nanomedicine, as various nanomaterials can be used for both diagnostics and therapies. Among those of particular interest are superparamagnetic iron oxide nanoparticles (SPIONs), due to their unique magnetic properties,. However, while the number of new SPIONs, suitably modified and functionalized, designed for medical purposes, has been gradually increasing, it has not yet been translated into the number of approved clinical solutions. The presented review covers various issues related to SPIONs of potential theranostic applications. It refers to structural considerations (the nanoparticle core, most often used modifications and functionalizations) and the ways of characterizing newly designed nanoparticles. The discussion about the phenomenon of protein corona formation leads to the conclusion that the scarcity of proper tools to investigate the interactions between SPIONs and human serum proteins is the reason for difficulties in introducing them into clinical applications. The review emphasizes the importance of understanding the mechanism behind the protein corona formation, as it has a crucial impact on the effectiveness of designed SPIONs in the physiological environment.
Collapse
Affiliation(s)
- Jacek Sikorski
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664 Warsaw, Poland
| | - Magdalena Matczuk
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664 Warsaw, Poland
| | - Marta Stępień
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664 Warsaw, Poland
| | - Karolina Ogórek
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664 Warsaw, Poland
| | - Lena Ruzik
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664 Warsaw, Poland
| | - Maciej Jarosz
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664 Warsaw, Poland
| |
Collapse
|
3
|
Kim P, Serov N, Falchevskaya A, Shabalkin I, Dmitrenko A, Kladko D, Vinogradov V. Quantifying the Efficacy of Magnetic Nanoparticles for MRI and Hyperthermia Applications via Machine Learning Methods. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303522. [PMID: 37563807 DOI: 10.1002/smll.202303522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/16/2023] [Indexed: 08/12/2023]
Abstract
Magnetic nanoparticles are a prospective class of materials for use in biomedicine as agents for magnetic resonance imagining (MRI) and hyperthermia treatment. However, synthesis of nanoparticles with high efficacy is resource-intensive experimental work. In turn, the use of machine learning (ML) methods is becoming useful in materials design and serves as a great approach to designing nanomagnets for biomedicine. In this work, for the first time, an ML-based approach is developed for the prediction of main parameters of material efficacy, i.e., specific absorption rate (SAR) for hyperthermia and r1 /r2 relaxivities in MRI, with parameters of nanoparticles as well as experimental conditions as descriptors. For that, a unique database with more than 980 magnetic nanoparticles collected from scientific articles is assembled. Using this data, several tree-based ensemble models are trained to predict SAR, r1 and r2 relaxivity. After hyperparameter optimization, models reach performances of R2 = 0.86, R2 = 0.78, and R2 = 0.75, respectively. Testing the models on samples unseen during the training shows no performance drops. Finally, DiMag, an open access resource created to guide synthesis of novel nanosized magnets for MRI and hyperthermia treatment with machine learning and boost development of new biomedical agents, is developed.
Collapse
Affiliation(s)
- Pavel Kim
- International Institute "Solution Chemistry of Advanced Materials and Technologies", ITMO University, St. Petersburg, 191002, Russian Federation
| | - Nikita Serov
- International Institute "Solution Chemistry of Advanced Materials and Technologies", ITMO University, St. Petersburg, 191002, Russian Federation
| | - Aleksandra Falchevskaya
- International Institute "Solution Chemistry of Advanced Materials and Technologies", ITMO University, St. Petersburg, 191002, Russian Federation
| | - Ilia Shabalkin
- International Institute "Solution Chemistry of Advanced Materials and Technologies", ITMO University, St. Petersburg, 191002, Russian Federation
| | - Andrei Dmitrenko
- International Institute "Solution Chemistry of Advanced Materials and Technologies", ITMO University, St. Petersburg, 191002, Russian Federation
| | - Daniil Kladko
- International Institute "Solution Chemistry of Advanced Materials and Technologies", ITMO University, St. Petersburg, 191002, Russian Federation
| | - Vladimir Vinogradov
- International Institute "Solution Chemistry of Advanced Materials and Technologies", ITMO University, St. Petersburg, 191002, Russian Federation
| |
Collapse
|
4
|
Ogbezode JE, Ezealigo US, Bello A, Anye VC, Onwualu AP. A narrative review of the synthesis, characterization, and applications of iron oxide nanoparticles. DISCOVER NANO 2023; 18:125. [PMID: 37815643 PMCID: PMC10564704 DOI: 10.1186/s11671-023-03898-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 09/11/2023] [Indexed: 10/11/2023]
Abstract
The significance of green synthesized nanomaterials with a uniform shape, reduced sizes, superior mechanical capabilities, phase microstructure, magnetic behavior, and superior performance cannot be overemphasized. Iron oxide nanoparticles (IONPs) are found within the size range of 1-100 nm in nanomaterials and have a diverse range of applications in fields such as biomedicine, wastewater purification, and environmental remediation. Nevertheless, the understanding of their fundamental material composition, chemical reactions, toxicological properties, and research methodologies is constrained and extensively elucidated during their practical implementation. The importance of producing IONPs using advanced nanofabrication techniques that exhibit strong potential for disease therapy, microbial pathogen control, and elimination of cancer cells is underscored by the adoption of the green synthesis approach. These IONPs can serve as viable alternatives for soil remediation and the elimination of environmental contaminants. Therefore, this paper presents a comprehensive analysis of the research conducted on different types of IONPs and IONP composite-based materials. It examines the synthesis methods and characterization techniques employed in these studies and also addresses the obstacles encountered in prior investigations with comparable objectives. A green engineering strategy was proposed for the synthesis, characterization, and application of IONPs and their composites with reduced environmental impact. Additionally, the influence of their phase structure, magnetic properties, biocompatibility, toxicity, milling time, nanoparticle size, and shape was also discussed. The study proposes the use of biological and physicochemical methods as a more viable alternative nanofabrication strategy that can mitigate the limitations imposed by the conventional methods of IONP synthesis.
Collapse
Affiliation(s)
- Joseph Ekhebume Ogbezode
- Department of Materials Science and Engineering, African University of Science and Technology, Abuja, Nigeria.
- Department of Mechanical Engineering, Edo State University Uzairue, Uzairue, Edo State, Nigeria.
| | - Ucheckukwu Stella Ezealigo
- Department of Materials Science and Engineering, African University of Science and Technology, Abuja, Nigeria
| | - Abdulhakeem Bello
- Department of Materials Science and Engineering, African University of Science and Technology, Abuja, Nigeria.
- Centre for Cyber-Physical Food, Energy and Water System (CCP-FEWS), Electrical and Electronic Engineering Science, University of Johannesburg, Johannesburg, South Africa.
- Department of Theoretical and Applied Physics, African University of Science and Technology, Abuja, Nigeria.
| | - Vitalis Chioh Anye
- Department of Materials Science and Engineering, African University of Science and Technology, Abuja, Nigeria
| | - Azikiwe Peter Onwualu
- Department of Materials Science and Engineering, African University of Science and Technology, Abuja, Nigeria
| |
Collapse
|
5
|
Williams DF. The plasticity of biocompatibility. Biomaterials 2023; 296:122077. [PMID: 36907003 DOI: 10.1016/j.biomaterials.2023.122077] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 02/19/2023] [Accepted: 03/02/2023] [Indexed: 03/11/2023]
Abstract
Biocompatibility concerns the phenomena that occur within the interactions between biomaterials and human patients, which ultimately control the performance of many facets of medical technology. It involves aspects of materials science, many different forms of engineering and nanotechnology, chemistry, biophysics, molecular and cellular biology, immunology, pathology and a myriad of clinical applications. It is not surprising that an overarching framework of mechanisms of biocompatibility has been difficult to elucidate and validate. This essay discusses one fundamental reason for this; we have tended to consider biocompatibility pathways as essentially linear sequences of events which follow well-understood processes of materials science and biology. The reality, however, is that the pathways may involve a great deal of plasticity, in which many additional idiosyncratic factors, including those of genetic, epigenetic and viral origin, exert influence, as do complex mechanical, physical and pharmacological variables. Plasticity is an inherent core feature of the performance of synthetic materials; here we follow the more recent biological applications of plasticity concepts into the sphere of biocompatibility pathways. A straightforward linear pathway may result in successful outcomes for many patients; we may describe this in terms of classic biocompatibility pathways. In other situations, which usually command much more attention because of their unsuccessful outcomes, these plasticity-driven processes follow alternative biocompatibility pathways; often, the variability in outcomes with identical technologies is due to biological plasticity rather than material or device deficiency.
Collapse
Affiliation(s)
- David F Williams
- Wake Forest Institute of Regenerative Medicine, Winston-Salem, North Carolina, USA.
| |
Collapse
|
6
|
Brero F, Arosio P, Albino M, Cicolari D, Porru M, Basini M, Mariani M, Innocenti C, Sangregorio C, Orsini F, Lascialfari A. 1H-NMR Relaxation of Ferrite Core-Shell Nanoparticles: Evaluation of the Coating Effect. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:804. [PMID: 36903682 PMCID: PMC10005490 DOI: 10.3390/nano13050804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/17/2023] [Accepted: 02/19/2023] [Indexed: 06/18/2023]
Abstract
We investigated the effect of different organic coatings on the 1H-NMR relaxation properties of ultra-small iron-oxide-based magnetic nanoparticles. The first set of nanoparticles, with a magnetic core diameter ds1 = 4.4 ± 0.7 nm, was coated with polyacrylic acid (PAA) and dimercaptosuccinic acid (DMSA), while the second set, ds2 = 8.9 ± 0.9 nm, was coated with aminopropylphosphonic acid (APPA) and DMSA. At fixed core diameters but different coatings, magnetization measurements revealed a similar behavior as a function of temperature and field. On the other hand, the 1H-NMR longitudinal r1 nuclear relaxivity in the frequency range ν = 10 kHz ÷ 300 MHz displayed, for the smallest particles (diameter ds1), an intensity and a frequency behavior dependent on the kind of coating, thus indicating different electronic spin dynamics. Conversely, no differences were found in the r1 relaxivity of the biggest particles (ds2) when the coating was changed. It is concluded that, when the surface to volume ratio, i.e., the surface to bulk spins ratio, increases (smallest nanoparticles), the spin dynamics change significantly, possibly due to the contribution of surface spin dynamics/topology.
Collapse
Affiliation(s)
- Francesca Brero
- Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, 27100 Pavia, Italy
| | - Paolo Arosio
- Dipartimento di Fisica, Università degli Studi di Milano, and INFN, 20133 Milano, Italy
| | - Martin Albino
- Dipartimento di Chimica, Università degli Studi di Firenze and INSTM, 50019 Sesto Fiorentino, Italy
- ICCOM-CNR, 50019 Sesto Fiorentino, Italy
| | - Davide Cicolari
- Dipartimento di Fisica, Università degli Studi di Milano, and INFN, 20133 Milano, Italy
- ASST GOM Niguarda, Struttura Complessa Fisica Sanitaria, 20162 Milano, Italy
| | - Margherita Porru
- Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, 27100 Pavia, Italy
- Dipartimento di Fisica, Università degli Studi di Pavia, 27100 Pavia, Italy
| | - Martina Basini
- Physics Department, Stockholm University, 114201 Stockholm, Sweden
| | - Manuel Mariani
- Dipartimento di Fisica, Università degli Studi di Pavia, 27100 Pavia, Italy
| | - Claudia Innocenti
- Dipartimento di Chimica, Università degli Studi di Firenze and INSTM, 50019 Sesto Fiorentino, Italy
- ICCOM-CNR, 50019 Sesto Fiorentino, Italy
| | - Claudio Sangregorio
- Dipartimento di Chimica, Università degli Studi di Firenze and INSTM, 50019 Sesto Fiorentino, Italy
- ICCOM-CNR, 50019 Sesto Fiorentino, Italy
- Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, 50019 Sesto Fiorentino, Italy
| | - Francesco Orsini
- Dipartimento di Fisica, Università degli Studi di Milano, and INFN, 20133 Milano, Italy
| | - Alessandro Lascialfari
- Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, 27100 Pavia, Italy
- Dipartimento di Fisica, Università degli Studi di Pavia, 27100 Pavia, Italy
| |
Collapse
|
7
|
Magnetic Iron Nanoparticles: Synthesis, Surface Enhancements, and Biological Challenges. Processes (Basel) 2022. [DOI: 10.3390/pr10112282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This review focuses on the role of magnetic nanoparticles (MNPs), their physicochemical properties, their potential applications, and their association with the consequent toxicological effects in complex biologic systems. These MNPs have generated an accelerated development and research movement in the last two decades. They are solving a large portion of problems in several industries, including cosmetics, pharmaceuticals, diagnostics, water remediation, photoelectronics, and information storage, to name a few. As a result, more MNPs are put into contact with biological organisms, including humans, via interacting with their cellular structures. This situation will require a deeper understanding of these particles’ full impact in interacting with complex biological systems, and even though extensive studies have been carried out on different biological systems discussing toxicology aspects of MNP systems used in biomedical applications, they give mixed and inconclusive results. Chemical agencies, such as the Registration, Evaluation, Authorization, and Restriction of Chemical substances (REACH) legislation for registration, evaluation, and authorization of substances and materials from the European Chemical Agency (ECHA), have held meetings to discuss the issue. However, nanomaterials (NMs) are being categorized by composition alone, ignoring the physicochemical properties and possible risks that their size, stability, crystallinity, and morphology could bring to health. Although several initiatives are being discussed around the world for the correct management and disposal of these materials, thanks to the extensive work of researchers everywhere addressing the issue of related biological impacts and concerns, and a new nanoethics and nanosafety branch to help clarify and bring together information about the impact of nanoparticles, more questions than answers have arisen regarding the behavior of MNPs with a wide range of effects in the same tissue. The generation of a consolidative framework of these biological behaviors is necessary to allow future applications to be manageable.
Collapse
|
8
|
Janik-Olchawa N, Drozdz A, Wajda A, Sitarz M, Planeta K, Setkowicz Z, Ryszawy D, Kmita A, Chwiej J. Biochemical changes of macrophages and U87MG cells occurring as a result of the exposure to iron oxide nanoparticles detected with the Raman microspectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 278:121337. [PMID: 35537264 DOI: 10.1016/j.saa.2022.121337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/13/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
The core size of iron oxide nanoparticles (IONPs) is a crucial factor defining not only their magnetic properties but also toxicological profile and biocompatibility. On the other hand, particular IONPs may induce different biological response depending on the dose, exposure time, but mainly depending on the examined system. New light on this problem may be shed by the information concerning biomolecular anomalies appearing in various cell lines in response to the action of IONPs with different core diameters and this was accomplished in the present study. Using Raman microscopy we studied the abnormalities in the accumulation of proteins, lipids and organic matter within the nucleus, cytoplasm and cellular membrane of macrophages, HEK293T and U87MG cell line occurring as a result of 24-hour long exposure to PEG-coated magnetite IONPs. The examined nanoparticles had 5, 10 and 30 nm cores and were administered in doses 5 and 25 μg Fe/ml. The obtained results showed significant anomalies in biochemical composition of macrophages and the U87MG cells, but not the HEK293T cells, occurring as a result of exposure to all of the examined nanoparticles. However, IONPs with 10 nm core diminished the accumulation of biomolecules in cells only when they were administered at a larger dose. The Raman spectra recorded for the macrophages subjected to 30 nm IONPs and for the U87MG cells exposed to 5 and 10 nm showed the presence of additional bands in the wavenumber range 1700-2400 cm-1, probably resulting from the appearance of Fe adducts within cells. Our results indicate, moreover, that smaller IONPs may be effectively internalized into the U87MG cells, which points at their diagnostic/therapeutic potential in the case of glioblastoma multiforme.
Collapse
Affiliation(s)
- Natalia Janik-Olchawa
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
| | - Agnieszka Drozdz
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Aleksandra Wajda
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Maciej Sitarz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
| | - Karolina Planeta
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
| | - Zuzanna Setkowicz
- Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387 Krakow, Poland
| | - Damian Ryszawy
- Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Angelika Kmita
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
| | - Joanna Chwiej
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland.
| |
Collapse
|
9
|
Abstract
Nanocomposites based on polymers and nanoparticles are used in agriculture for photoconversion of solar radiation, as a basis for covering material, as a packaging material, and as functional films. At the same time, nanocomposites are almost never used in agriculture as biosafe structural materials. In this work, we have developed a technology for obtaining a nanocomposite based on PLGA and iron oxide nanoparticles. The nanocomposite has unique physical and chemical properties and also exhibits pronounced antibacterial properties at a concentration of iron oxide nanoparticles of more than 0.01%. At the same time, the nanocomposite does not affect the growth and development of pepper and is biocompatible with mammalian cells. Nanocomposites based on PLGA and iron oxide nanoparticles can be an attractive candidate for the manufacture of structural and packaging materials in agriculture.
Collapse
|
10
|
Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation. Polymers (Basel) 2022; 14:polym14132614. [PMID: 35808660 PMCID: PMC9269335 DOI: 10.3390/polym14132614] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 02/06/2023] Open
Abstract
The aim of this study was to investigate covalent immobilization of horseradish peroxidase (HRP) on magnetic nanoparticles (Mag) encapsulated in calcium alginate beads (MABs) for color degradation, combining easy and fast removal of biocatalyst from the reaction mixture due to its magnetic properties and strong binding due to surface alginate functional groups. MABs obtained by extrusion techniques were analyzed by optical microscopy, FEG-SEM and characterized regarding mechanical properties, magnetization and HRP binding. HRP with initial concentration of 10 mg/gcarrier was successfully covalently bonded on MABs (diameter ~1 mm, magnetite/alginate ratio 1:4), with protein loading of 8.9 mg/gcarrier, immobilization yield 96.9% and activity 32.8 U/g. Immobilized HRP on MABs (HRP-MABs) was then used to catalyze degradation of two anthraquinonic dyes, Acid Blue 225 (AB225) and Acid Violet 109 (AV109), as models for wastewater pollutants. HRP-MABs decolorized 77.3% and 76.1% of AV109 and AB225, respectively after 15 min under optimal conditions (0.097 mM H2O2, 200 mg of HRP-MABs (8.9 mg/gcarrier), 0.08 and 0.1 g/mg beads/dye ratio for AV109 and AB225, respectively). Biocatalyst was used for 7 repeated cycles retaining 75% and 51% of initial activity for AB225 and AV109, respectively, showing potential for use in large scale applications for colored wastewater treatment.
Collapse
|
11
|
Ali TH, Mandal AM, Heidelberg T, Hussen RSD. Sugar based cationic magnetic core-shell silica nanoparticles for nucleic acid extraction. RSC Adv 2022; 12:13566-13579. [PMID: 35530382 PMCID: PMC9069700 DOI: 10.1039/d2ra01139e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 04/19/2022] [Indexed: 01/09/2023] Open
Abstract
Nucleic acid (NA) extraction is an essential step in molecular testing for a wide range of applications. Conventional extraction protocols usually suffer from time consuming removal of non-nucleic acid impurities. In this study, a new magnetic nanoparticle (MNP) is presented to simplify the NA extraction. A core–shell design, comprising of a ferromagnetic core coated with mesoporous silica, forms the basis of the functional nanoparticle. Chemical functionalization of the silica coating includes a multistep synthesis, in which an activated nanoparticle is coupled with a triethylene glycol spaced glycosyl imidazole. The molecular design aims for charge interactions between the imidazolium-based positive nanoparticle surface and nucleic acids, with specific hydrogen bonding between the surface bonded carbohydrate and nucleic acid targets to ensure nucleic acid selectivity and avoid protein contamination. Two different carbohydrates, differing in molecular size, were selected to compare the efficiency in terms of NA extraction. A triethylene glycol spacer provides sufficient flexibility to remove particle surface constraints for the interaction. The Brunauer–Emmett–Teller (BET) analysis shows a significantly larger surface area for the disaccharide-based particles NpFeSiImMalt (∼181 m2 g−1) compared to the monosaccharide analogue NpFeSiImGlc (∼116 m2 g−1) at small particles sizes (range ∼ 15 nm) and sufficient magnetization (29 emu g−1) for easy isolation by an external magnetic field. The particles enabled a high DNA particle loading ratio of 30–45 wt% (MNP/DNA ratio), reflecting an efficient extraction process. A high desorption rate (7 min) with more than 86% of unchanged DNA loading was recorded, indicating low damage to the target extract. New design of cationic magnetic core–shell nanoparticles fabricated with a large hydrophilic group (carbohydrate molecules) enabled high adsorption of a nucleic acid, easy isolation and controlled the movement by applying an external magnetic field.![]()
Collapse
Affiliation(s)
- Tammar Hussein Ali
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Al-Muthanna University 66001 Samawah Al Muthanna Iraq .,Molecular Design and Synthesis, Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Amar Mousa Mandal
- College of Basic Education, Science Department, Al-Muthanna University 66001 Samawah Al Muthanna Iraq
| | - Thorsten Heidelberg
- Chemistry Department, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | | |
Collapse
|
12
|
PARMANIK A, BOSE A, GHOSH B. Research advancement on magnetic iron oxide nanoparticles and their potential biomedical applications. MINERVA BIOTECHNOLOGY AND BIOMOLECULAR RESEARCH 2022. [DOI: 10.23736/s2724-542x.21.02830-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|