1
|
Cojocaru E, Petriș OR, Cojocaru C. Nanoparticle-Based Drug Delivery Systems in Inhaled Therapy: Improving Respiratory Medicine. Pharmaceuticals (Basel) 2024; 17:1059. [PMID: 39204164 PMCID: PMC11357421 DOI: 10.3390/ph17081059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 08/03/2024] [Accepted: 08/09/2024] [Indexed: 09/03/2024] Open
Abstract
Inhaled nanoparticle (NP) therapy poses intricate challenges in clinical and pharmacodynamic realms. Recent strides have revolutionized NP technology by enabling the incorporation of diverse molecules, thus circumventing systemic clearance mechanisms and enhancing drug effectiveness while mitigating systemic side effects. Despite the established success of systemic NP delivery in oncology and other disciplines, the exploration of inhaled NP therapies remains relatively nascent. NPs loaded with bronchodilators or anti-inflammatory agents exhibit promising potential for precise distribution throughout the bronchial tree, offering targeted treatment for respiratory diseases. This article conducts a comprehensive review of NP applications in respiratory medicine, highlighting their merits, ranging from heightened stability to exacting lung-specific delivery. It also explores cutting-edge technologies optimizing NP-loaded aerosol systems, complemented by insights gleaned from clinical trials. Furthermore, the review examines the current challenges and future prospects in NP-based therapies. By synthesizing current data and perspectives, the article underscores the transformative promise of NP-mediated drug delivery in addressing chronic conditions such as chronic obstructive pulmonary disease, a pressing global health concern ranked third in mortality rates. This overview illuminates the evolving landscape of NP inhalation therapies, presenting optimistic avenues for advancing respiratory medicine and improving patient outcomes.
Collapse
Affiliation(s)
- Elena Cojocaru
- Morpho-Functional Sciences II Department, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania;
| | - Ovidiu Rusalim Petriș
- Medical II Department, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Cristian Cojocaru
- Medical III Department, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania;
| |
Collapse
|
2
|
Chettri A, Kaberov LI, Klosterhalfen N, Perera S, Jamshied M, Schacher FH, Dietzek-Ivanšić B. Poly(2-Oxazoline) Amphiphilicity Tunes the Excited-State Proton Transfer of Pyrenol-Based Polyphotoacids. Chemistry 2024; 30:e202401047. [PMID: 38699878 DOI: 10.1002/chem.202401047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/02/2024] [Accepted: 05/03/2024] [Indexed: 05/05/2024]
Abstract
The ability of light to change the properties of light-responsive polymers opens avenues for targeted release of cargo with a high degree of spatial and temporal control. Recently, we established photoacid polymers as light-switchable macromolecular amphiphiles. In these systems, light-induced excited-state proton transfer (ESPT) causes changes in amphilicity. However, as the intermolecular process itself critically depends on the local environment of the photoacid unit within the polymer, the overall amphiphilicity directly influences ESPT. Thus, understanding the impact of the local environment on the photophysics of photoacidic side chains is key to material design. In this contribution we address both thermodynamic and kinetic aspects of ESPT in oxazoline-based amphiphilic polymers with pyrenol-based photoacid side chains. We will compare the effect of polymer design, i. e. statistical and block arrangements, i. e. in poly[(2-ethyl-2-oxazoline)-co-(1-(6/8-hydroxyperene)sulphonylaziridine)] and poly(2-ethyl-2-oxazoline)-block-poly[(2-ethyl-2-oxazoline)-co-(2-(3-(6-hydroxypyrene)sulphonamide)propyl-2-oxazoline), on the intermolecular proton transfer reaction by combining steady-state and time-resolved absorption and emission spectroscopy. ESPT appears more prominent in the statistical copolymer compared to a block copolymer with overall similar pyrenol loading. We hypothesize that the difference is due to different local chain arrangements adopted by the polymers in the two cases.
Collapse
Affiliation(s)
- Avinash Chettri
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Research Department Functional Interfaces, Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Leonid I Kaberov
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
- Jena Center for Soft Matter, Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Niklas Klosterhalfen
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Research Department Functional Interfaces, Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Sandunika Perera
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
- Jena Center for Soft Matter, Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Mohammed Jamshied
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
- Jena Center for Soft Matter, Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Felix H Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
- Jena Center for Soft Matter, Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Benjamin Dietzek-Ivanšić
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Research Department Functional Interfaces, Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745, Jena, Germany
| |
Collapse
|
3
|
Van Guyse JFR, Abbasi S, Toh K, Nagorna Z, Li J, Dirisala A, Quader S, Uchida S, Kataoka K. Facile Generation of Heterotelechelic Poly(2-Oxazoline)s Towards Accelerated Exploration of Poly(2-Oxazoline)-Based Nanomedicine. Angew Chem Int Ed Engl 2024; 63:e202404972. [PMID: 38651732 DOI: 10.1002/anie.202404972] [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: 03/13/2024] [Revised: 04/19/2024] [Accepted: 04/23/2024] [Indexed: 04/25/2024]
Abstract
Controlling the end-groups of biocompatible polymers is crucial for enabling polymer-based therapeutics and nanomedicine. Typically, end-group diversification is a challenging and time-consuming endeavor, especially for polymers prepared via ionic polymerization mechanisms with limited functional group tolerance. In this study, we present a facile end-group diversification approach for poly(2-oxazoline)s (POx), enabling quick and reliable production of heterotelechelic polymers to facilitate POxylation. The approach relies on the careful tuning of reaction parameters to establish differential reactivity of a pentafluorobenzyl initiator fragment and the living oxazolinium chain-end, allowing the selective introduction of N-, S-, O-nucleophiles via the termination of the polymerization, and a consecutive nucleophilic para-fluoro substitution. The value of this approach for the accelerated development of nanomedicine is demonstrated through the synthesis of well-defined lipid-polymer conjugates and POx-polypeptide block-copolymers, which are well-suited for drug and gene delivery. Furthermore, we investigated the application of a lipid-POx conjugate for the formulation and delivery of mRNA-loaded lipid nanoparticles for immunization against the SARS-COV-2 virus, underscoring the value of POx as a biocompatible polymer platform.
Collapse
Affiliation(s)
- Joachim F R Van Guyse
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
- Leiden Academic Centre for Drug Research (LACDR), Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Saed Abbasi
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| | - Kazuko Toh
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| | - Zlata Nagorna
- Leiden Academic Centre for Drug Research (LACDR), Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Junjie Li
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, 819-0395, Fukuoka, Japan
| | - Anjaneyulu Dirisala
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| | - Sabina Quader
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| | - Satoshi Uchida
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
- Department of Medical, Chemistry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 606-0823, Kyoto, Japan
- Department of Advanced Nanomedical Engineering, Medical Research Institute, Tokyo Medical and Dental University (TMDU), 113-8510, Tokyo, Japan
| | - Kazunori Kataoka
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| |
Collapse
|
4
|
Morrow JP, Mazrad ZAI, Warne NM, Ayton S, Bush AI, Kempe K. Schiff-Base Cross-Linked Poly(2-oxazoline) Micelle Drug Conjugates Possess Antiferroptosis Activity in Numerous In Vitro Cell Models. Biomacromolecules 2024; 25:1068-1083. [PMID: 38178625 DOI: 10.1021/acs.biomac.3c01106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A great deal of nanocarriers have been applied to induce ferroptosis in cancer research, yet there are limited examples of nanocarrier formulations to rescue ferroptosis, which can be applied to neurodegeneration, inflammation, liver damage, kidney disease, and more. Here, we present the synthesis, characterization, and in vitro evaluation of pH-responsive, core-cross-linked micelle (CCM) ferrostatin-1 (Fer-1) conjugates with amine, valproic acid, and biotin surface chemistries. Fer-1 release from stable and defined CCM Fer-1 conjugates was quantified, highlighting the sustained release for 24 h. CCM Fer-1 conjugates demonstrated excellent ferroptosis rescue by their antilipid peroxidation activity in a diverse set of cell lines in vitro. Additionally, CCMs showed tunable cell association in SH-SY5Y and translocation across an in vitro blood-brain barrier (BBB) model, highlighting potential brain disease applications. Overall, here, we present a polymeric Fer-1 delivery system to enhance Fer-1 action, which could help in improving Fer-1 action in the treatment of ferroptosis-related diseases.
Collapse
Affiliation(s)
- Joshua P Morrow
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Zihnil A I Mazrad
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Nicole M Warne
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Scott Ayton
- Melbourne Dementia Research Centre, The Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Ashley I Bush
- Melbourne Dementia Research Centre, The Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Kristian Kempe
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
- Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
| |
Collapse
|
5
|
Kehrein J, Gürsöz E, Davies M, Luxenhofer R, Bunker A. Unravel the Tangle: Atomistic Insight into Ultrahigh Curcumin-Loaded Polymer Micelles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303066. [PMID: 37403298 DOI: 10.1002/smll.202303066] [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: 04/11/2023] [Revised: 06/22/2023] [Indexed: 07/06/2023]
Abstract
Amphiphilic ABA-triblock copolymers, comprised of poly(2-oxazoline) and poly(2-oxazine), can solubilize poorly water-soluble molecules in a structure-dependent manner forming micelles with exceptionally high drug loading. All-atom molecular dynamics simulations are conducted on previously experimentally characterized, curcumin-loaded micelles to dissect the structure-property relationships. Polymer-drug interactions for different levels of drug loading and variation in polymer structures of both the inner hydrophobic core and outer hydrophilic shell are investigated. In silico, the system with the highest experimental loading capacity shows the highest number of drug molecules encapsulated by the core. Furthermore, in systems with lower loading capacity outer A blocks show a greater extent of entanglement with the inner B blocks. Hydrogen bond analyses corroborate previous hypotheses: poly(2-butyl-2-oxazoline) B blocks, found experimentally to have reduced loading capacity for curcumin compared to poly(2-propyl-2-oxazine), establish fewer but longer-lasting hydrogen bonds. This possibly results from different sidechain conformations around the hydrophobic cargo, which is investigated by unsupervised machine learning to cluster monomers in smaller model systems mimicking different micelle compartments. Exchanging poly(2-methyl-2-oxazoline) with poly(2-ethyl-2-oxazoline) leads to increased drug interactions and reduced corona hydration; this suggests an impairment of micelle solubility or colloidal stability. These observations can help driving forward a more rational a priori nanoformulation design.
Collapse
Affiliation(s)
- Josef Kehrein
- Soft Matter Chemistry, Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki, 00014, Finland
- Division of Pharmaceutical Biosciences, Drug Research Program, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Ekinsu Gürsöz
- Soft Matter Chemistry, Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki, 00014, Finland
- Division of Pharmaceutical Biosciences, Drug Research Program, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Matthew Davies
- Department of Physics and Astronomy, The University of Western Ontario, 1151 Richmond Street, London, Ontario, N6A 5B7, Canada
| | - Robert Luxenhofer
- Soft Matter Chemistry, Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki, 00014, Finland
| | - Alex Bunker
- Division of Pharmaceutical Biosciences, Drug Research Program, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| |
Collapse
|
6
|
Drain BA, Becer RC. Hydrolysis of hydrophobic poly(2-oxazoline)s and their subsequent modification via aza-Michael addition. Des Monomers Polym 2023; 26:214-222. [PMID: 37840642 PMCID: PMC10569348 DOI: 10.1080/15685551.2023.2267232] [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: 06/27/2023] [Accepted: 10/02/2023] [Indexed: 10/17/2023] Open
Abstract
Partially hydrolysed poly(2-oxazoline)s possess unique properties. However, much of the focus in this area has been on water soluble poly(2-oxazoline)s. Where hydrophobic poly(2-oxazoline)s have been used, this is often for selective hydrolysis. However, hydrolysis of very hydrophobic polymers could lead to interesting solution behaviour. Herein, we describe universal conditions for the hydrolysis of poly(2-alkyl-2-oxazoline)s suitable for both hydrophobic and hydrophilic 2-oxazolines. We show that the system utilised gives comparable rates to that of water alone for poly(2-ethyl-2-oxazoline). In addition, poly(2-fatty acid-2-oxazoline) was hydrolysed using the developed system and was found to proceed in a controlled manner allowing the targeting of specific degrees of hydrolysis, albeit much slower than for poly(2-ethyl-2-oxazoline). Finally, we demonstrate the partial functionalisation of poly(2-oxazoline)-poly(ethylene imine) co-polymers via aza-Michael addition.
Collapse
Affiliation(s)
- Ben A. Drain
- Department of Chemistry, University of Warwick, Coventry, UK
- School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Remzi C. Becer
- Department of Chemistry, University of Warwick, Coventry, UK
| |
Collapse
|
7
|
Andrianov AK. Noncovalent PEGylation of protein and peptide therapeutics. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1897. [PMID: 37138514 DOI: 10.1002/wnan.1897] [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: 02/01/2023] [Revised: 04/15/2023] [Accepted: 04/20/2023] [Indexed: 05/05/2023]
Abstract
Clinical applications of protein therapeutics-an advanced generation of drugs characterized by high biological specificity-are rapidly expanding. However, their development is often impeded by unfavorable pharmacokinetic profiles and largely relies on the use of drug delivery systems to prolong their in vivo half-life and suppress undesirable immunogenicity. Although a commercially established PEGylation technology based on protein conjugation with poly(ethylene glycol) (PEG)-protective steric shield resolves some of the challenges, the search for alternatives continues. Noncovalent PEGylation, which mainly relies on multivalent (cooperative) interactions and high affinity (host-guest) complexes formed between protein and PEG offers a number of potential advantages. Among them are dynamic or reversible protection of the protein with minimal loss of biological activity, drastically lower manufacturing costs, "mix-and-match" formulations approaches, and expanded scope of PEGylation targets. While a great number of innovative chemical approaches have been proposed in recent years, the ability to effectively control the stability of noncovalently assembled protein-PEG complexes under physiological conditions presents a serious challenge for the commercial development of the technology. In an attempt to identify critical factors affecting pharmacological behavior of noncovalently linked complexes, this Review follows a hierarchical analysis of various experimental techniques and resulting supramolecular architectures. The importance of in vivo administration routes, degradation patterns of PEGylating agents, and a multitude of potential exchange reactions with constituents of physiological compartments are highlighted. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease.
Collapse
Affiliation(s)
- Alexander K Andrianov
- Institute of Bioscience and Biotechnology Research, University of Maryland, Rockville, Maryland, USA
| |
Collapse
|
8
|
Lavanya K, Balagangadharan K, Chandran SV, Selvamurugan N. Chitosan-coated and thymol-loaded polymeric semi-interpenetrating hydrogels: An effective platform for bioactive molecule delivery and bone regeneration in vivo. BIOMATERIALS ADVANCES 2023; 146:213305. [PMID: 36709630 DOI: 10.1016/j.bioadv.2023.213305] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/07/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Thymol (2-isopropyl-5-methylphenol; Thy) is a monoterpene phenolic phytocompound with medicinal properties; however, its impact on osteogenesis is yet to be thoroughly investigated. Its distribution is often hampered because of its intricate hydrophobic structure, which reduces its bioavailability. In this study, we synthesized a drug delivery vehicle using semi-interpenetrating polymer network (SIPN) hydrogels containing sodium alginate and poly(2-ethyl-2-oxazoline) (SA/Pox) loaded with Thy at varying concentrations (100, 150, and 200 μM). Subsequently, they were coated with chitosan (CS) to increase bioactivity and for sustained and prolonged release of Thy. Thy-loaded CS-coated SIPN hydrogels (SA/Pox/CS-Thy) were developed using ionic gelation and polyelectrolyte-complexation techniques. The addition of CS to hydrogels enhanced their physicochemical and material properties. These hydrogels were cytofriendly toward mouse mesenchymal stem cells (mMSCs). When mMSCs were cultured on hydrogels, Thy stimulated osteoblastic differentiation, as evidenced by calcium deposits at the cellular level. The expression of RUNX2, a key bone transcriptional factor, and other differentiation biomarkers was significantly enhanced in mMSCs cultured on SA/Pox/CS-Thy hydrogels. Notably, Thy in the SA/Pox/CS hydrogels significantly activated the TGF-β/BMP signaling pathway, which is involved in osteogenesis. A rat tibial bone defect model system revealed that the incorporation of Thy into SA/Pox/CS hydrogels augmented bone regeneration. Thus, sustained and prolonged release of Thy from the SA/Pox/CS hydrogels promoted osteoblast differentiation in vitro and bone formation in vivo. These findings shed light on the effect of Thy bioavailability in fostering osteoblast differentiation and its prospective application in bone rejuvenation.
Collapse
Affiliation(s)
- K Lavanya
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - K Balagangadharan
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - S Viji Chandran
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - N Selvamurugan
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India..
| |
Collapse
|
9
|
Wang Y, Xia H, Chen B, Wang Y. Rethinking nanoparticulate polymer-drug conjugates for cancer theranostics. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1828. [PMID: 35734967 DOI: 10.1002/wnan.1828] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 01/31/2023]
Abstract
Polymer-drug conjugates (PDCs) fabricated as nanoparticles have hogged the limelight in cancer theranostics in the past decade. Many researchers have devoted to developing novel and efficient polymeric drug delivery system since the first generation of poly(N-[2-hydroxypropyl]methacrylamide) copolymer-drug conjugates. However, none of them has been approved for chemotherapy in clinic. An ideal PDC nanoparticle for cancer theranostics should possess several properties, including prolonged circulation in blood, sufficient accumulation and internalization in tumors, and efficient drug release in target sites. To achieve these goals, it is important to rationally design the nanoparticulate PDCs based on circulation, accumulation, penetration, internalization, and drug release (CAPIR) cascade. Specifically, CAPIR cascades are divided into five steps: (1) circulation in the vascular compartment without burst release, (2) accumulation in tumors via enhanced permeability and retention effect, (3) subsequent penetration into the deep regions of tumors, (4) internalization into tumor cells, and (5) release of drugs as free molecules to exert their pharmacological effects. In this review, we focus on the development and novel approaches of nanoparticulate PDCs based on CAPIR cascade, and provide an outlook on future clinical application. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease.
Collapse
Affiliation(s)
- Yaoqi Wang
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, China.,Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, Beijing, China.,Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing, China
| | - Heming Xia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Binlong Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Yiguang Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| |
Collapse
|
10
|
Kim W, Ly NK, He Y, Li Y, Yuan Z, Yeo Y. Protein corona: Friend or foe? Co-opting serum proteins for nanoparticle delivery. Adv Drug Deliv Rev 2023; 192:114635. [PMID: 36503885 PMCID: PMC9812987 DOI: 10.1016/j.addr.2022.114635] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 11/15/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
For systemically delivered nanoparticles to reach target tissues, they must first circulate long enough to reach the target and extravasate there. A challenge is that the particles end up engaging with serum proteins and undergo immune cell recognition and premature clearance. The serum protein binding, also known as protein corona formation, is difficult to prevent, even with artificial protection via "stealth" coating. Protein corona may be problematic as it can interfere with the interaction of targeting ligands with tissue-specific receptors and abrogate the so-called active targeting process, hence, the efficiency of drug delivery. However, recent studies show that serum protein binding to circulating nanoparticles may be actively exploited to enhance their downstream delivery. This review summarizes known issues of protein corona and traditional strategies to control the corona, such as avoiding or overriding its formation, as well as emerging efforts to enhance drug delivery to target organs via nanoparticles. It concludes with a discussion of prevailing challenges in exploiting protein corona for nanoparticle development.
Collapse
Affiliation(s)
- Woojun Kim
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Nhu Ky Ly
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA; Université Paris Cité, Faculté de Santé, 4 Avenue de l'Observatoire, 75006 Paris, France
| | - Yanying He
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Yongzhe Li
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Zhongyue Yuan
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Yoon Yeo
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA; Weldon School of Biomedical Engineering, Purdue University, 206 South Martin Jischke Drive, West Lafayette, IN 47907, USA.
| |
Collapse
|
11
|
Loose Semirigid Aromatic Polyester Bottle Brushes at Poly(2-isopropyl-2-oxazoline) Side Chains of Various Lengths: Behavior in Solutions and Thermoresponsiveness. Polymers (Basel) 2022; 14:polym14245354. [PMID: 36559721 PMCID: PMC9781464 DOI: 10.3390/polym14245354] [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: 11/09/2022] [Revised: 11/25/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022] Open
Abstract
A polycondensation aromatic polyester with an oxygen spacer was synthesized and used as a macroinitiator for the grafting of linear poly(2-isopropyl-2-oxazoline) (PiPrOx) by the cationic polymerization method. The length of the thermosensitive side chains was varied by the initiator:monomer ratio. Using methods of molecular hydrodynamics, light scattering and turbidimetry, the copolymers were studied in organic solvents and in water. The molecular characteristics of the main chain and graft copolymers, the polymerization degree of side chains and their grafting density have been determined. The equilibrium rigidity of the macroinitiator and the conformations of grafted macromolecules were evaluated. In selective solvents, they take on a star-like conformation or aggregate depending on the degree of shielding of the main chain by side chains. The thermoresponsiveness of graft copolymers in aqueous solutions was studied, and their LCST were estimated. The results are compared with data for graft copolymers composed of PiPrOx side chains and flexible or rigid chain backbones of aromatic polyester type.
Collapse
|
12
|
Samaro A, Vergaelen M, Purino M, Tigrine A, de la Rosa VR, Goudarzi NM, Boone MN, Vanhoorne V, Hoogenboom R, Vervaet C. Poly(2-alkyl-2-oxazoline)s: A polymer platform to sustain the release from tablets with a high drug loading. Mater Today Bio 2022; 16:100414. [PMID: 36133793 PMCID: PMC9483731 DOI: 10.1016/j.mtbio.2022.100414] [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: 04/18/2022] [Revised: 08/24/2022] [Accepted: 08/28/2022] [Indexed: 11/25/2022] Open
Abstract
Sustaining the release of highly dosed APIs from a matrix tablet is challenging. To address this challenge, this study evaluated the performance of thermoplastic poly (2-alkyl-2-oxazoline)s (PAOx) as matrix excipient to produce sustained-release tablets via three processing routes: (a) hot-melt extrusion (HME) combined with injection molding (IM), (b) HME combined with milling and compression and (c) direct compression (DC). Different PAOx (co-)polymers and polymer mixtures were processed with several active pharmaceutical ingredients having different aqueous solubilities and melting temperatures (metoprolol tartrate (MPT), metformin hydrochloride (MTF) and theophylline anhydrous (THA)). Different PAOx grades were synthesized and purified by the Supramolecular Chemistry Group, and the effect of PAOx grade and processing technique on the in vitro release kinetics was evaluated. Using the hydrophobic poly (2-n-propyl-2-oxazoline) (PnPrOx) as a matrix excipient allowed to sustain the release of different APIs, even at a 70% (w/w) drug load. Whereas complete THA release was not achieved from the PnPrOx matrix over 24 h regardless of the processing technique, adding 7.5% w/w of the hydrophilic poly (2-ethyl-2-oxazoline) to the hydrophobic PnPrOx matrix significantly increased THA release, highlighting the relevance of mixing different PAOx grades. In addition, it was demonstrated that the release of THA was similar from co-polymer and polymer mixtures with the same polymer ratios. On the other hand, as the release of MTF from a PnPrOx matrix was fast, the more hydrophobic poly (2-sec-butyl-2-oxazoline) (PsecBuOx) was used to retard MTF release. In addition, a mixture between the hydrophilic PEtOx and the hydrophobic PsecBuOx allowed accurate tuning of the release of MTF formulations. Finally, it was demonstrated that PAOx also showed a high ability to tune the in vivo release. IM tablets containing 70% MTF and 30% PsecBuOx showed a lower in vivo bioavailability compared to IM tablets containing a low PEtOx concentration (7.5%, w/w) in combination with PsecBuOx (22.5%, w/w). Importantly, the in vivo MTF blood level from the sustained release tablets correlated well with the in vitro release profiles. In general, this work demonstrates that PAOx polymers offer a versatile formulation platform to adjust the release rate of different APIs, enabling sustained release from tablets with up to 70% w/w drug loading.
Collapse
Affiliation(s)
- Aseel Samaro
- Laboratory of Pharmaceutical Technology, Ghent University, Ottergemsesteenweg, 460 9000, Ghent, Belgium
| | - Maarten Vergaelen
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Krijgslaan 281-S4 9000 Ghent University, Ghent, Belgium
| | - Martin Purino
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Krijgslaan 281-S4 9000 Ghent University, Ghent, Belgium
| | - Ali Tigrine
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Krijgslaan 281-S4 9000 Ghent University, Ghent, Belgium
| | - Victor R de la Rosa
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Krijgslaan 281-S4 9000 Ghent University, Ghent, Belgium.,Avroxa BV., Technologiepark-Zwijnaarde, Ghent, Belgium
| | - Niloofar Moazami Goudarzi
- Radiation Physics Research Group, Department of Physics and Astronomy, Ghent University, Belgium.,Center for X-ray Tomography (UGCT), Ghent University, Ghent, Belgium
| | - Matthieu N Boone
- Radiation Physics Research Group, Department of Physics and Astronomy, Ghent University, Belgium.,Center for X-ray Tomography (UGCT), Ghent University, Ghent, Belgium
| | - Valérie Vanhoorne
- Laboratory of Pharmaceutical Technology, Ghent University, Ottergemsesteenweg, 460 9000, Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Krijgslaan 281-S4 9000 Ghent University, Ghent, Belgium
| | - Chris Vervaet
- Laboratory of Pharmaceutical Technology, Ghent University, Ottergemsesteenweg, 460 9000, Ghent, Belgium
| |
Collapse
|
13
|
Panico S, Capolla S, Bozzer S, Toffoli G, Dal Bo M, Macor P. Biological Features of Nanoparticles: Protein Corona Formation and Interaction with the Immune System. Pharmaceutics 2022; 14:pharmaceutics14122605. [PMID: 36559099 PMCID: PMC9781747 DOI: 10.3390/pharmaceutics14122605] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/10/2022] [Accepted: 11/17/2022] [Indexed: 11/29/2022] Open
Abstract
Nanoparticles (NPs) are versatile candidates for nanomedical applications due to their unique physicochemical properties. However, their clinical applicability is hindered by their undesirable recognition by the immune system and the consequent immunotoxicity, as well as their rapid clearance in vivo. After injection, NPs are usually covered with layers of proteins, called protein coronas (PCs), which alter their identity, biodistribution, half-life, and efficacy. Therefore, the characterization of the PC is for in predicting the fate of NPs in vivo. The aim of this review was to summarize the state of the art regarding the intrinsic factors closely related to the NP structure, and extrinsic factors that govern PC formation in vitro. In addition, well-known opsonins, including complement, immunoglobulins, fibrinogen, and dysopsonins, such as histidine-rich glycoprotein, apolipoproteins, and albumin, are described in relation to their role in NP detection by immune cells. Particular emphasis is placed on their role in mediating the interaction of NPs with innate and adaptive immune cells. Finally, strategies to reduce PC formation are discussed in detail.
Collapse
Affiliation(s)
- Sonia Panico
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Sara Capolla
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 33081 Aviano, Italy
| | - Sara Bozzer
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 33081 Aviano, Italy
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 33081 Aviano, Italy
| | - Michele Dal Bo
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 33081 Aviano, Italy
| | - Paolo Macor
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
- Correspondence: ; Tel.: +39-0405588683
| |
Collapse
|
14
|
Datta S, Huntošová V, Jutková A, Seliga R, Kronek J, Tomkova A, Lenkavská L, Máčajová M, Bilčík B, Kundeková B, Čavarga I, Pavlova E, Šlouf M, Miškovský P, Jancura D. Influence of Hydrophobic Side-Chain Length in Amphiphilic Gradient Copoly(2-oxazoline)s on the Therapeutics Loading, Stability, Cellular Uptake and Pharmacokinetics of Nano-Formulation with Curcumin. Pharmaceutics 2022; 14:pharmaceutics14122576. [PMID: 36559069 PMCID: PMC9781838 DOI: 10.3390/pharmaceutics14122576] [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: 10/27/2022] [Revised: 11/11/2022] [Accepted: 11/18/2022] [Indexed: 11/25/2022] Open
Abstract
Due to the simple one-step preparation method and a promising application in biomedical research, amphiphilic gradient copoly(2-oxazoline)s are gaining more and more interest compared to their analogous block copolymers. In this work, the curcumin solubilization ability was tested for a series of amphiphilic gradient copoly(2-oxazoline)s with different lengths of hydrophobic side-chains, consisting of 2-ethyl-2-oxazoline as a hydrophilic monomer and 2-(4-alkyloxyphenyl)-2-oxazoline as a hydrophobic monomer. It is shown that the length of the hydrophobic side-chain in the copolymers plays a crucial role in the loading of curcumin onto the self-assembled nanoparticles. The kinetic stability of self-assembled nanoparticles studied using FRET shows a link between their integrity and cellular uptake in human glioblastoma cells. The present study demonstrates how minor changes in the molecular structure of gradient copoly(2-oxazoline)s can lead to significant differences in the loading, stability, cytotoxicity, cellular uptake, and pharmacokinetics of nano-formulations containing curcumin. The obtained results on the behavior of the complex of gradient copoly(2-oxazoline)s and curcumin may contribute to the development of effective next-generation polymeric nanostructures for biomedical applications.
Collapse
Affiliation(s)
- Shubhashis Datta
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P. J. Safarik University in Košice, Jesenna 5, 04154 Košice, Slovakia
- Correspondence: (S.D.); (V.H.)
| | - Veronika Huntošová
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P. J. Safarik University in Košice, Jesenna 5, 04154 Košice, Slovakia
- Correspondence: (S.D.); (V.H.)
| | - Annamária Jutková
- Department of Biophysics, Faculty of Science, P. J. Safarik University in Košice, Jesenna 5, 04154 Košice, Slovakia
- SAFTRA Photonics s.r.o., Moldavska Cesta 51, 04011 Košice, Slovakia
| | - Róbert Seliga
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P. J. Safarik University in Košice, Jesenna 5, 04154 Košice, Slovakia
| | - Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dubravska Cesta 9, 845 41 Bratislava, Slovakia
| | - Adriána Tomkova
- Department of Biophysics, Faculty of Science, P. J. Safarik University in Košice, Jesenna 5, 04154 Košice, Slovakia
| | - Lenka Lenkavská
- Department of Biophysics, Faculty of Science, P. J. Safarik University in Košice, Jesenna 5, 04154 Košice, Slovakia
| | - Mariana Máčajová
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia
| | - Boris Bilčík
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia
| | - Barbora Kundeková
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia
| | - Ivan Čavarga
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho Nam. 2, 162 06 Prague, Czech Republic
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho Nam. 2, 162 06 Prague, Czech Republic
| | - Pavol Miškovský
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P. J. Safarik University in Košice, Jesenna 5, 04154 Košice, Slovakia
- SAFTRA Photonics s.r.o., Moldavska Cesta 51, 04011 Košice, Slovakia
- Cassovia New Industry Cluster, Tr. SNP 1, 04001 Košice, Slovakia
| | - Daniel Jancura
- Department of Biophysics, Faculty of Science, P. J. Safarik University in Košice, Jesenna 5, 04154 Košice, Slovakia
| |
Collapse
|
15
|
Kravchenko VS, Gumerov RA, Papadakis CM, Potemkin II. Self-Assembly of Molecular Brushes with Responsive Alternating Copolymer Side Chains. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vitaly S. Kravchenko
- Physics Department, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russian Federation
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russian Federation
| | - Rustam A. Gumerov
- Physics Department, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russian Federation
| | - Christine M. Papadakis
- Fachgebiet Physik weicher Materie, Physik-Department, Technische Universität München, James-Franck-Straße 1, Garching 85748, Germany
| | - Igor I. Potemkin
- Physics Department, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russian Federation
- National Research South Ural State University, Chelyabinsk 454080, Russian Federation
| |
Collapse
|
16
|
Poly(2-oxazoline)s as Stimuli-Responsive Materials for Biomedical Applications: Recent Developments of Polish Scientists. Polymers (Basel) 2022; 14:polym14194176. [PMID: 36236124 PMCID: PMC9572872 DOI: 10.3390/polym14194176] [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: 09/06/2022] [Revised: 09/30/2022] [Accepted: 10/03/2022] [Indexed: 11/05/2022] Open
Abstract
Poly(2-oxazoline)s are the synthetic polymers that are the products of the cationic ring-opening polymerization (CROP) of 2-oxazoline monomers. Due to their beneficial properties, from which biocompatibility, stealth behavior, high functionalization possibilities, low dispersity, stability, nonionic character, and solubility in water and organic solvents should be noted, they have found many applications and gained enormous interest from scientists. Additionally, with high versatility attainable through copolymerization or through post-polymerization modifications, this class of polymeric systems has been widely used as a polymeric platform for novel biomedical applications. The chemistry of polymers significant expanded into biomedical applications, in which polymeric networks can be successfully used in pharmaceutical development for tissue engineering, gene therapies, and also drug delivery systems. On the other hand, there is also a need to create ‘smart’ polymer biomaterials, responsive to the specified factor, that will be sensitive to various environmental stimuli. The commonly used stimuli-responsive biomedical materials are based mostly on temperature-, light-, magnetic-, electric-, and pH-responsive systems. Thus, creating selective and responsive materials that allow personalized treatment is in the interest of the scientific world. This review article focuses on recent discoveries by Polish scientists working in the field of stimuli-responsive poly(2-oxazoline)s, and their work is compared and contrasted with results reported by other world-renowned specialists.
Collapse
|
17
|
Stable amorphous solid dispersion of flubendazole with high loading via electrospinning. J Control Release 2022; 351:123-136. [PMID: 36122898 DOI: 10.1016/j.jconrel.2022.09.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 08/30/2022] [Accepted: 09/13/2022] [Indexed: 11/22/2022]
Abstract
In this work, an important step is taken towards the bioavailability improvement of poorly water-soluble drugs, such as flubendazole (Flu), posing a challenge in the current development of many novel oral-administrable therapeutics. Solvent electrospinning of a solution of the drug and poly (2-ethyl-2-oxazoline) (PEtOx) is demonstrated to be a viable strategy to produce stable nanofibrous amorphous solid dispersions (ASDs) with ultrahigh drug-loadings (up to 55 wt% Flu) and long-term stability (at least one year). Importantly, at such high drug loadings, the concentration of the polymer in the electrospinning solution has to be lowered below the concentration where it can be spun in absence of the drug as the interactions between the polymer and the drug result in increased solution viscosity. A combination of experimental analysis and molecular dynamics simulations revealed that this formulation strategy provides strong, dominant and highly stable hydrogen bonds between the polymer and the drug, which is crucial to obtain the high drug-loadings and to preserve the long-term amorphous character of the ASDs upon storage. In vitro drug release studies confirm the remarkable potential of this electrospinning formulation strategy by significantly increased drug solubility values and dissolution rates (respectively tripled and quadrupled compared to the crystalline drug), even after storing the formulation for one year.
Collapse
|
18
|
Polyoxazoline: A review article from polymerization to smart behaviors and biomedical applications. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
19
|
Chen Q, Kou M, He Y, Zhao Y, Chen L. Constructing hierarchical surface structure of hemodialysis membranes to intervene in oxidative stress through Michael addition reaction between tannic acid and PEtOx brushes. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
20
|
Kirila TY, Razina AB, Ten’kovtsev AV, Filippov AP. Effect of the Structure of Arms and Way of Their Attachment to Calix[4]arene on Self-Assembly Processes in Aqueous Solutions of Thermoresponsive Star-Shaped Poly(2-alkyl-2-oxazolines) and Poly(2-alkyl-2-oxazines). POLYMER SCIENCE SERIES C 2022. [DOI: 10.1134/s1811238222700102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
21
|
Morrow JP, Mazrad ZAI, Bush AI, Kempe K. Poly(2-oxazoline) - Ferrostatin-1 drug conjugates inhibit ferroptotic cell death. J Control Release 2022; 350:193-203. [PMID: 35944752 DOI: 10.1016/j.jconrel.2022.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 07/15/2022] [Accepted: 08/04/2022] [Indexed: 10/15/2022]
Abstract
Ferroptosis is a form of non-apoptotic iron induced cell death mechanism implicated in neurodegeneration, yet can be ameliorated with potent radical scavengers such as ferrostatin-1 (Fer-1). Currently, Fer-1 suffers from low water solubility, poor biodistribution profile and is unsuitable for clinical application. Fer-1 polymer-drug conjugates (PDCs) for testing as an anti-ferroptosis therapeutic candidate have yet to be described. Here, we report the synthesis and characterization of a library of water-soluble Fer-1 based poly(2-oxazoline)-drug conjugates. The cationic ring opening polymerization (CROP) of water-soluble 2-oxazoline monomers, and a novel protected aromatic aldehyde 2-oxazoline (DPhOx), produced defined copolymers, which after deprotection were available for modification with Fer-1 via reductive amination and Schiff base chemistry. The conjugates were tested for their activity against RSL3-induced ferroptosis in vitro, and first structure-activity relationships were established. Irreversibly conjugated Fer-1 PDCs possessing an arylamine structural motif showed a greatly increased anti-ferroptosis activity compared to reversibly (Schiff base) linked Fer-1. Overall, this work introduces the first active ferrostatin-PDCs and a new highly tuneable poly(2-oxazoline)-based PDC platform, which provides access to next generation polymeric nanomaterials for anti-ferroptosis applications.
Collapse
Affiliation(s)
- Joshua P Morrow
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Zihnil A I Mazrad
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Ashley I Bush
- Melbourne Dementia Research Centre, The Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Kristian Kempe
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia; Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia,.
| |
Collapse
|
22
|
Gao YZ, Li A, Chen JC, Cui Z, Wu YX. Quaternized Sodium Alginate- g-Ethyl-Oxazoline Copolymer Brushes and Their Supramolecular Networks via Hydrogen Bonding. ACS Biomater Sci Eng 2022; 8:3424-3437. [PMID: 35878006 DOI: 10.1021/acsbiomaterials.2c00436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel copolymer brushes of quaternized sodium alginate-g-(2-ethyl-2-oxazoline)n are achieved by the grafting reaction of 2-ethyl-2-oxazoline (EOX) from benzyl bromide groups in quaternized sodium alginate (QSA). The average number of (EOX)n structural units is mediated from 1 to 5 by changing the molar ratio of the EOX monomer to benzyl bromide side groups. There exists obvious microphase separation between the QSA backbone and (EOX)n segments in the copolymer brushes due to their thermodynamic incompatibility. The strong hydrogen-bonding interaction between -OH groups in the backbone and N─C═O groups in (EOX)n segments is helpful for the construction of reversible supramolecular networks. The copolymer brushes show low cytotoxicity for HeLa cells and good antibacterial properties for Escherichia coli and Staphylococcus aureus for the contribution of hydrophilic (EOX)n segments and antibacterial activity of the quaternary ammonium. The antiprotein behavior of polymer surfaces is improved after rearrangement of (EOX)n segments by tetrahydrofuran (THF) vapor induction. These copolymer brushes have good prospects for biomedical applications.
Collapse
Affiliation(s)
- Yu-Zhuang Gao
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| | - Ang Li
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| | - Jun-Cai Chen
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| | - Zhe Cui
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| | - Yi-Xian Wu
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| |
Collapse
|
23
|
Kolouchova K, Cernochova Z, Groborz O, Herynek V, Koucky F, Jaksa R, Benes J, Slouf M, Hruby M. Multiresponsive Fluorinated Polymers as a Theragnostic Platform Using 19F MRI. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
24
|
Jana S, Hoogenboom R. Poly(2‐oxazoline)s: A comprehensive overview of polymer structures and their physical properties – An update. POLYM INT 2022. [DOI: 10.1002/pi.6426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Somdeb Jana
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry Ghent University, Krijgslaan 281‐S4 9000 Ghent Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry Ghent University, Krijgslaan 281‐S4 9000 Ghent Belgium
| |
Collapse
|
25
|
Dhingra S, Sharma S, Saha S. Infection Resistant Surface Coatings by Polymer Brushes: Strategies to Construct and Applications. ACS APPLIED BIO MATERIALS 2022; 5:1364-1390. [DOI: 10.1021/acsabm.1c01006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Shaifali Dhingra
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Shivangi Sharma
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Sampa Saha
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| |
Collapse
|
26
|
|
27
|
Švec P, Petrov OV, Lang J, Štěpnička P, Groborz O, Dunlop D, Blahut J, Kolouchová K, Loukotová L, Sedláček O, Heizer T, Tošner Z, Šlouf M, Beneš H, Hoogenboom R, Hrubý M. Fluorinated Ferrocene Moieties as a Platform for Redox-Responsive Polymer 19F MRI Theranostics. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pavel Švec
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Oleg V. Petrov
- Department of Low Temperature Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, Prague 8 180 00, Czech Republic
| | - Jan Lang
- Department of Low Temperature Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, Prague 8 180 00, Czech Republic
| | | | - Ondřej Groborz
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
- Institute of Organic Chemistry and Biochemistry, CAS, Flemingovo nám. 2, Prague 6 160 00, Czech Republic
| | - David Dunlop
- Institute of Organic Chemistry and Biochemistry, CAS, Flemingovo nám. 2, Prague 6 160 00, Czech Republic
- J. Heyrovský Institute of Physical Chemistry, CAS, Dolejškova 2155/3, Prague 8 182 23, Czech Republic
| | | | - Kristýna Kolouchová
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Lenka Loukotová
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
- Institute of Organic Chemistry and Biochemistry, CAS, Flemingovo nám. 2, Prague 6 160 00, Czech Republic
| | - Ondřej Sedláček
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent B-9000, Belgium
| | | | | | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Hynek Beneš
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent B-9000, Belgium
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| |
Collapse
|
28
|
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.
Collapse
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
| |
Collapse
|
29
|
Babuka D, Kolouchova K, Loukotova L, Sedlacek O, Groborz O, Skarkova A, Zhigunov A, Pavlova E, Hoogenboom R, Hruby M, Stepanek P. Self-Assembly, Drug Encapsulation, and Cellular Uptake of Block and Gradient Copolymers of 2-Methyl-2-oxazine and 2- n-Propyl/butyl-2-oxazoline. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01794] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- David Babuka
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho sq. 2, Prague 6 162 06, Czech Republic
- Department of Biophysics, Institute of Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague 2 121 16, Czech Republic
| | - Kristyna Kolouchova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho sq. 2, Prague 6 162 06, Czech Republic
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2 128 00, Czech Republic
| | - Lenka Loukotova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho sq. 2, Prague 6 162 06, Czech Republic
| | - Ondrej Sedlacek
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2 128 00, Czech Republic
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Ondrej Groborz
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho sq. 2, Prague 6 162 06, Czech Republic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo sq. 542, Prague 6 162 06, Czech Republic
- Institute of Biophysics and Informatics, Charles University, First Faculty of Medicine, Salmovská 1, Prague 2 120 00, Czech Republic
| | - Aneta Skarkova
- Department of Cell Biology, Charles University, Vinicna 7, Prague 12843, Czech Republic
- Biotechnology and Biomedicine Centre of the Academy of Sciences and Charles University (BIOCEV), Prumyslova 595, Vestec u Prahy 25242, Czech Republic
| | - Alexander Zhigunov
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho sq. 2, Prague 6 162 06, Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho sq. 2, Prague 6 162 06, Czech Republic
| | - Richard Hoogenboom
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Martin Hruby
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho sq. 2, Prague 6 162 06, Czech Republic
| | - Petr Stepanek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho sq. 2, Prague 6 162 06, Czech Republic
| |
Collapse
|
30
|
Putra N, Tigrine A, Aksakal S, de la Rosa V, Taheri P, Fratila-Apachitei L, Mol J, Zhou J, Zadpoor A. Poly(2-ethyl-2-oxazoline) coating of additively manufactured biodegradable porous iron. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 133:112617. [DOI: 10.1016/j.msec.2021.112617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/06/2021] [Accepted: 12/13/2021] [Indexed: 11/25/2022]
|
31
|
Hahn D, Sonntag JM, Lück S, Maitz MF, Freudenberg U, Jordan R, Werner C. Poly(2-alkyl-2-oxazoline)-Heparin Hydrogels-Expanding the Physicochemical Parameter Space of Biohybrid Materials. Adv Healthc Mater 2021; 10:e2101327. [PMID: 34541827 DOI: 10.1002/adhm.202101327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/10/2021] [Indexed: 12/19/2022]
Abstract
Poly(ethylene glycol) (PEG)-glycosaminoglycan (GAG) hydrogel networks are established as very versatile biomaterials. Herein, the synthetic gel component of the biohybrid materials is systematically varied by combining different poly(2-alkyl-2-oxazolines) (POx) with heparin applying a Michael-type addition crosslinking scheme: POx of gradated hydrophilicity and temperature-responsiveness provides polymer networks of distinctly different stiffness and swelling. Adjusting the mechanical properties and the GAG concentration of the gels to similar values allows for modulating the release of GAG-binding growth factors (VEGF165 and PDGF-BB) by the choice of the POx and its temperature-dependent conformation. Adsorption of fibronectin, growth of fibroblasts, and bacterial adhesion scale with the hydrophobicity of the gel-incorporated POx. In vitro hemocompatibility tests with freshly drawn human whole blood show advantages of POx-based gels compared to the PEG-based reference materials. Biohybrid POx hydrogels can therefore enable biomedical technologies requiring GAG-based materials with customized and switchable physicochemical characteristics.
Collapse
Affiliation(s)
- Dominik Hahn
- Leibniz Institute of Polymer Research Dresden Max‐Bergmann Center of Biomaterials Dresden Hohe Str. 6 01069 Dresden Germany
| | - Jannick M. Sonntag
- Dresden Initiative for Bioactive Interfaces & Materials Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany
- Professur für Makromolekulare Chemie Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany
| | - Steffen Lück
- Dresden Initiative for Bioactive Interfaces & Materials Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany
- Professur für Makromolekulare Chemie Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany
| | - Manfred F. Maitz
- Leibniz Institute of Polymer Research Dresden Max‐Bergmann Center of Biomaterials Dresden Hohe Str. 6 01069 Dresden Germany
| | - Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden Max‐Bergmann Center of Biomaterials Dresden Hohe Str. 6 01069 Dresden Germany
| | - Rainer Jordan
- Dresden Initiative for Bioactive Interfaces & Materials Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany
- Professur für Makromolekulare Chemie Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden Max‐Bergmann Center of Biomaterials Dresden Hohe Str. 6 01069 Dresden Germany
- Center for Regenerative Therapies Dresden (CRTD) Fetscherstr. 105 01307 Dresden Germany
| |
Collapse
|
32
|
Tinajero-Díaz E, Salado-Leza D, Gonzalez C, Martínez Velázquez M, López Z, Bravo-Madrigal J, Knauth P, Flores-Hernández FY, Herrera-Rodríguez SE, Navarro RE, Cabrera-Wrooman A, Krötzsch E, Carvajal ZYG, Hernández-Gutiérrez R. Green Metallic Nanoparticles for Cancer Therapy: Evaluation Models and Cancer Applications. Pharmaceutics 2021; 13:1719. [PMID: 34684012 PMCID: PMC8537602 DOI: 10.3390/pharmaceutics13101719] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/29/2021] [Accepted: 10/05/2021] [Indexed: 12/15/2022] Open
Abstract
Metal-based nanoparticles are widely used to deliver bioactive molecules and drugs to improve cancer therapy. Several research works have highlighted the synthesis of gold and silver nanoparticles by green chemistry, using biological entities to minimize the use of solvents and control their physicochemical and biological properties. Recent advances in evaluating the anticancer effect of green biogenic Au and Ag nanoparticles are mainly focused on the use of conventional 2D cell culture and in vivo murine models that allow determination of the half-maximal inhibitory concentration, a critical parameter to move forward clinical trials. However, the interaction between nanoparticles and the tumor microenvironment is not yet fully understood. Therefore, it is necessary to develop more human-like evaluation models or to improve the existing ones for a better understanding of the molecular bases of cancer. This review provides recent advances in biosynthesized Au and Ag nanoparticles for seven of the most common and relevant cancers and their biological assessment. In addition, it provides a general idea of the in silico, in vitro, ex vivo, and in vivo models used for the anticancer evaluation of green biogenic metal-based nanoparticles.
Collapse
Affiliation(s)
- Ernesto Tinajero-Díaz
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647, 08028 Barcelona, Spain;
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de La Normal, Guadalajara 44270, Mexico; (M.M.V.); (J.B.-M.); (F.Y.F.-H.); (S.E.H.-R.)
| | - Daniela Salado-Leza
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava, Zona Universitaria, San Luis Potosí 78210, Mexico; (D.S.-L.); (C.G.)
- Cátedras CONACyT, México City 03940, Mexico
| | - Carmen Gonzalez
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava, Zona Universitaria, San Luis Potosí 78210, Mexico; (D.S.-L.); (C.G.)
| | - Moisés Martínez Velázquez
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de La Normal, Guadalajara 44270, Mexico; (M.M.V.); (J.B.-M.); (F.Y.F.-H.); (S.E.H.-R.)
| | - Zaira López
- Centro Universitario de la Ciénega, Cell Biology Laboratory, Universidad de Guadalajara, Av. Universidad 1115, Ocotlán 47810, Mexico; (Z.L.); (P.K.)
| | - Jorge Bravo-Madrigal
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de La Normal, Guadalajara 44270, Mexico; (M.M.V.); (J.B.-M.); (F.Y.F.-H.); (S.E.H.-R.)
| | - Peter Knauth
- Centro Universitario de la Ciénega, Cell Biology Laboratory, Universidad de Guadalajara, Av. Universidad 1115, Ocotlán 47810, Mexico; (Z.L.); (P.K.)
| | - Flor Y. Flores-Hernández
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de La Normal, Guadalajara 44270, Mexico; (M.M.V.); (J.B.-M.); (F.Y.F.-H.); (S.E.H.-R.)
| | - Sara Elisa Herrera-Rodríguez
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de La Normal, Guadalajara 44270, Mexico; (M.M.V.); (J.B.-M.); (F.Y.F.-H.); (S.E.H.-R.)
| | - Rosa E. Navarro
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, México City 04510, Mexico;
| | - Alejandro Cabrera-Wrooman
- Centro Nacional de Investigación y Atención de Quemados, Laboratory of Connective Tissue, Instituto Nacional de Rehabilitación “Luis Guillermo Ibarra Ibarra”, México City 14389, Mexico; (A.C.-W.); (E.K.)
| | - Edgar Krötzsch
- Centro Nacional de Investigación y Atención de Quemados, Laboratory of Connective Tissue, Instituto Nacional de Rehabilitación “Luis Guillermo Ibarra Ibarra”, México City 14389, Mexico; (A.C.-W.); (E.K.)
| | - Zaira Y. García Carvajal
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de La Normal, Guadalajara 44270, Mexico; (M.M.V.); (J.B.-M.); (F.Y.F.-H.); (S.E.H.-R.)
| | - Rodolfo Hernández-Gutiérrez
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de La Normal, Guadalajara 44270, Mexico; (M.M.V.); (J.B.-M.); (F.Y.F.-H.); (S.E.H.-R.)
| |
Collapse
|
33
|
Huntošová V, Datta S, Lenkavská L, Máčajová M, Bilčík B, Kundeková B, Čavarga I, Kronek J, Jutková A, Miškovský P, Jancura D. Alkyl Chain Length in Poly(2-oxazoline)-Based Amphiphilic Gradient Copolymers Regulates the Delivery of Hydrophobic Molecules: A Case of the Biodistribution and the Photodynamic Activity of the Photosensitizer Hypericin. Biomacromolecules 2021; 22:4199-4216. [PMID: 34494830 DOI: 10.1021/acs.biomac.1c00768] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Self-assembled nanostructures of amphiphilic gradient copoly(2-oxazoline)s have recently attracted attention as promising delivery systems for the effective delivery of hydrophobic anticancer drugs. In this study, we have investigated the effects of increasing hydrophobic side chain length on the self-assembly of gradient copolymers composed of 2-ethyl-2-oxazoline as the hydrophilic comonomer and various 2-(4-alkyloxyphenyl)-2-oxazolines as hydrophobic comonomers. We show that the size of the formed polymeric nanoparticles depends on the structure of the copolymers. Moreover, the stability and properties of the polymeric assembly can be affected by the loading of hypericin, a promising compound for photodiagnostics and photodynamic therapy (PDT). We have found the limitation that allows rapid or late release of hypericin from polymeric nanoparticles. The nanoparticles entering the cells by endocytosis decreased the hypericin-induced PDT, and the contribution of the passive process (diffusion) increased the probability of a stronger photoeffect. A study of fluorescence pharmacokinetics and biodistribution revealed differences in the release of hypericin from nanoparticles toward the quail chorioallantoic membrane, a preclinical model for in vivo studies, depending on the composition of polymeric nanoparticles. Photodamage induced by PDT in vivo well correlated with the in vitro results. All formulations studied succeeded in targeting hypericin at cancer cells. In conclusion, we demonstrated the promising potential of poly(2-oxazoline)-based gradient copolymers for effective drug delivery and sequential drug release needed for successful photodiagnostics and PDT in cancer therapy.
Collapse
Affiliation(s)
- Veronika Huntošová
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| | - Shubhashis Datta
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| | - Lenka Lenkavská
- Department of Biophysics, Faculty of Science, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| | - Mariana Máčajová
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska cesta 9, 840 05 Bratislava, Slovakia
| | - Boris Bilčík
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska cesta 9, 840 05 Bratislava, Slovakia
| | - Barbora Kundeková
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska cesta 9, 840 05 Bratislava, Slovakia
| | - Ivan Čavarga
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska cesta 9, 840 05 Bratislava, Slovakia
| | - Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia
| | - Annamária Jutková
- Department of Biophysics, Faculty of Science, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| | - Pavol Miškovský
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.,SAFTRA Photonics sro., Moldavska cesta 51, 04011 Kosice, Slovakia
| | - Daniel Jancura
- Department of Biophysics, Faculty of Science, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| |
Collapse
|
34
|
Kazemi M, Nazarabi M, Niazi Z, Ashjari M. Well-defined synthesis of poly(2-isopropyl-2-oxazoline)-based copolymer for delivery of doxorubicin by multi-sensitive nano-micelle. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1963723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Marzieh Kazemi
- Nanostructures and Biopolymer Research Lab, Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, Iran
| | - Masoomeh Nazarabi
- Nanostructures and Biopolymer Research Lab, Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, Iran
| | - Zahra Niazi
- Faculty of Engineering, Department of Chemical Engineering, University of Kashan, Kashan, Iran
| | - Mohsen Ashjari
- Nanostructures and Biopolymer Research Lab, Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, Iran
- Faculty of Engineering, Department of Chemical Engineering, University of Kashan, Kashan, Iran
| |
Collapse
|
35
|
Sánchez-Fernández MJ, Rutjes J, Félix Lanao RP, Bender JCME, van Hest JCM, Leeuwenburgh SCG. Bone-Adhesive Hydrogels Based on Dual Crosslinked Poly(2-oxazoline)s. Macromol Biosci 2021; 21:e2100257. [PMID: 34569720 DOI: 10.1002/mabi.202100257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/27/2021] [Indexed: 11/08/2022]
Abstract
The development of bone glues based on bone-adhesive hydrogels to allow for facile bone fracture fixation remains a major challenge. Herein, dual crosslinked hydrogels that combine tunable stiffness, ductility, and self-healing capacity are successfully synthesized. The resulting double network hydrogel is formed by chemical crosslinking of N-hydroxysuccinimide-functionalized poly(2-oxazoline)s(POx-NHS)"?> with amine-functionalized poly(2-oxazoline)s, and physical crosslinking of alendronate-functionalized poly(2-oxazoline)s (POx-Ale) with calcium ions in solution. The use of an excess of alendronate-functionalized POx-Ale polymers also ensures affinity toward calcium cations in the mineral phase of bone, thereby rendering these hydrogels adhesive to bone. The mechanical and bone-adhesive properties of these novel hydrogels are superior to commercially available fibrin sealants. Moreover, hydrogels retain their bone-adhesive properties under wet conditions. Although the dual crosslinked hydrogels swell considerably, they are stable upon immersion in phosphate-buffered saline (up to 12 d) and even in ethylenediaminetetraacetic acid solution. The enhanced mechanical and bone-adhesive properties of these hydrogels, as well as their in vitro stability, indicate that they have much application potential as bone-adhesive glues.
Collapse
Affiliation(s)
- María J Sánchez-Fernández
- Department of Dentistry-Regenerative Biomaterials, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 EX, the Netherlands
| | - Jens Rutjes
- Department of Dentistry-Regenerative Biomaterials, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 EX, the Netherlands
| | | | | | - Jan C M van Hest
- Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, MB, 5600, the Netherlands
| | - Sander C G Leeuwenburgh
- Department of Dentistry-Regenerative Biomaterials, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 EX, the Netherlands
| |
Collapse
|
36
|
Bioactive Plasma Coatings on Orthodontic Brackets: In Vitro Metal Ion Release and Cytotoxicity. COATINGS 2021. [DOI: 10.3390/coatings11070857] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The metal ion release characteristics and biocompatibility of meta-based materials are key factors that influence their use in orthodontics. Although stainless steel-based alloys have gained much interest and use due to their mechanical properties and cost, they are prone to localised attack after prolonged exposure to the hostile oral environment. Metal ions may induce cellular toxicity at high dosages. To circumvent these issues, orthodontic brackets were coated with a functional nano-thin layer of plasma polymer and further immobilised with enantiomers of tryptophan. Analysis of the physicochemical properties confirmed the presence of functional coatings on the surface of the brackets. The quantification of metal ion release using mass spectrometry proved that plasma functionalisation could minimise metal ion release from orthodontic brackets. Furthermore, the biocompatibility of the brackets has been improved after functionalisation. These findings demonstrate that plasma polymer facilitated surface functionalisation of orthodontic brackets is a promising approach to reducing metal toxicity without impacting their bulk properties.
Collapse
|
37
|
Haider MS, Ahmad T, Yang M, Hu C, Hahn L, Stahlhut P, Groll J, Luxenhofer R. Tuning the Thermogelation and Rheology of Poly(2-Oxazoline)/Poly(2-Oxazine)s Based Thermosensitive Hydrogels for 3D Bioprinting. Gels 2021; 7:78. [PMID: 34202652 PMCID: PMC8293086 DOI: 10.3390/gels7030078] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/09/2021] [Accepted: 06/15/2021] [Indexed: 12/28/2022] Open
Abstract
As one kind of "smart" material, thermogelling polymers find applications in biofabrication, drug delivery and regenerative medicine. In this work, we report a thermosensitive poly(2-oxazoline)/poly(2-oxazine) based diblock copolymer comprising thermosensitive/moderately hydrophobic poly(2-N-propyl-2-oxazine) (pPrOzi) and thermosensitive/moderately hydrophilic poly(2-ethyl-2-oxazoline) (pEtOx). Hydrogels were only formed when block length exceeded certain length (≈100 repeat units). The tube inversion and rheological tests showed that the material has then a reversible sol-gel transition above 25 wt.% concentration. Rheological tests further revealed a gel strength around 3 kPa, high shear thinning property and rapid shear recovery after stress, which are highly desirable properties for extrusion based three-dimensional (3D) (bio) printing. Attributed to the rheology profile, well resolved printability and high stackability (with added laponite) was also possible. (Cryo) scanning electron microscopy exhibited a highly porous, interconnected, 3D network. The sol-state at lower temperatures (in ice bath) facilitated the homogeneous distribution of (fluorescently labelled) human adipose derived stem cells (hADSCs) in the hydrogel matrix. Post-printing live/dead assays revealed that the hADSCs encapsulated within the hydrogel remained viable (≈97%). This thermoreversible and (bio) printable hydrogel demonstrated promising properties for use in tissue engineering applications.
Collapse
Affiliation(s)
- Malik Salman Haider
- Functional Polymer Materials, Chair for Advanced Materials Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany; (M.Y.); (C.H.); (L.H.)
| | - Taufiq Ahmad
- Department of Functional Materials in Medicine and Dentistry, Institute for Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-University Würzburg, Pleicherwall 2, 97070 Würzburg, Germany; (T.A.); (P.S.); (J.G.)
| | - Mengshi Yang
- Functional Polymer Materials, Chair for Advanced Materials Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany; (M.Y.); (C.H.); (L.H.)
| | - Chen Hu
- Functional Polymer Materials, Chair for Advanced Materials Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany; (M.Y.); (C.H.); (L.H.)
| | - Lukas Hahn
- Functional Polymer Materials, Chair for Advanced Materials Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany; (M.Y.); (C.H.); (L.H.)
| | - Philipp Stahlhut
- Department of Functional Materials in Medicine and Dentistry, Institute for Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-University Würzburg, Pleicherwall 2, 97070 Würzburg, Germany; (T.A.); (P.S.); (J.G.)
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry, Institute for Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-University Würzburg, Pleicherwall 2, 97070 Würzburg, Germany; (T.A.); (P.S.); (J.G.)
| | - Robert Luxenhofer
- Functional Polymer Materials, Chair for Advanced Materials Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany; (M.Y.); (C.H.); (L.H.)
- Soft Matter Chemistry, Department of Chemistry and Helsinki Institute of Sustainability Science, Faculty of Science, University of Helsinki, PB 55, 00014 Helsinki, Finland
| |
Collapse
|
38
|
Drain BA, Beyer VP, Cattoz B, Becer CR. Solvent Dependency in the Synthesis of Multiblock and Cyclic Poly(2-oxazoline)s. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00529] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- B. A. Drain
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, U.K
| | - V. P. Beyer
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, U.K
| | - B. Cattoz
- Infineum UK Ltd, Milton Hill, Didcot OX13 6BD, U.K
| | - C. R. Becer
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| |
Collapse
|
39
|
Schweigerdt A, Heinen S, Stöbener DD, Weinhart M. Grafting Density-Dependent Phase Transition Mechanism of Thermoresponsive Poly(glycidyl ether) Brushes: A Comprehensive QCM-D Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7087-7096. [PMID: 34077209 DOI: 10.1021/acs.langmuir.1c00695] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Thermoresponsive coatings that exhibit "switchable" protein- and cell-adhesive properties are frequently used for the fabrication of cell sheets. Among other architectures, polymer brush coatings have shown to be especially viable due to their distinct phase transition behavior, which can be tailored via a manifold of adjustable brush characteristics, such as the (co)monomer composition, polymer chain length, and grafting density. Brush coatings based on poly(glycidyl ether)s (PGEs) have shown to efficiently mediate cell sheet fabrication when tethered to various tissue culture substrates. Herein, we report the phase transition of self-assembled PGE brushes with respect to polymer molecular weight (M: 10 and 22 kDa) and grafting density (0.07-0.5 chains nm-2) on gold model substrates studied by quasi-static QCM-D temperature ramp measurements. The brush grafting density can be tuned via the applied grafting conditions, and all brushes investigated feature broad phase transition regimes (ΔT ∼15 °C) with volume phase transition temperatures (VPTTs) close to the cloud point temperatures (CPTs) of the PGEs in solution. We further demonstrate that brush coatings with a low grafting density (0.07-0.12 chains nm-2) exhibit a continuous brush-to-mushroom transition, whereas brushes with medium grafting densities (0.3-0.5 chains nm-2) undergo a brush-to-brush transition comprising vertical phase separation during the phase transition progress. These insights help to understand the transition behavior of thin, thermoresponsive brushes prepared via grafting-to strategies and contribute to their rational design for improved functional surfaces.
Collapse
Affiliation(s)
- Alexander Schweigerdt
- Institute of Chemistry and Biochemistry, Freie Universitaet Berlin, Takustr. 3, Berlin 14195, Germany
| | - Silke Heinen
- Institute of Chemistry and Biochemistry, Freie Universitaet Berlin, Takustr. 3, Berlin 14195, Germany
| | - Daniel D Stöbener
- Institute of Chemistry and Biochemistry, Freie Universitaet Berlin, Takustr. 3, Berlin 14195, Germany
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universitaet Hannover, Callinstr. 3A, Hannover 30167, Germany
| | - Marie Weinhart
- Institute of Chemistry and Biochemistry, Freie Universitaet Berlin, Takustr. 3, Berlin 14195, Germany
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universitaet Hannover, Callinstr. 3A, Hannover 30167, Germany
| |
Collapse
|
40
|
Chen Q, He Y, Zhao Y, Chen L. Intervening oxidative stress integrated with an excellent biocompatibility of hemodialysis membrane fabricated by nucleobase-recognized co-immobilization strategy of tannic acid, looped PEtOx brush and heparin. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119174] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
41
|
Self-Organization in Dilute Aqueous Solutions of Thermoresponsive Star-Shaped Six-Arm Poly-2-Alkyl-2-Oxazines and Poly-2-Alkyl-2-Oxazolines. Polymers (Basel) 2021; 13:polym13091429. [PMID: 33946655 PMCID: PMC8125547 DOI: 10.3390/polym13091429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/16/2021] [Accepted: 04/26/2021] [Indexed: 11/24/2022] Open
Abstract
The behavior of star-shaped six-arm poly-2-alkyl-2-oxazines and poly-2-alkyl-2-oxazolines in aqueous solutions on heating was studied by light scattering, turbidimetry and microcalorimetry. The core of stars was hexaaza [26] orthoparacyclophane and the arms were poly-2-ethyl-2-oxazine, poly-2-isopropyl-2-oxazine, poly-2-ethyl-2-oxazoline, and poly-2-isopropyl-2-oxazoline. The arm structure affects the properties of polymers already at low temperatures. Molecules and aggregates were present in solutions of poly-2-alkyl-2-oxazines, while aggregates of two types were observed in the case of poly-2-alkyl-2-oxazolines. On heating below the phase separation temperature, the characteristics of the investigated solutions did not depend practically on temperature. An increase in the dehydration degree of poly-2-alkyl-2-oxazines and poly-2-alkyl-2-oxazolines led to the formation of intermolecular hydrogen bonds, and aggregation was the dominant process near the phase separation temperature. It was shown that the characteristics of the phase transition in solutions of the studied polymer stars are determined primarily by the arm structure, while the influence of the molar mass is not so significant. In comparison with literature data, the role of the hydrophobic core structure in the formation of the properties of star-shaped polymers was analyzed.
Collapse
|
42
|
Trachsel L, Zenobi-Wong M, Benetti EM. The role of poly(2-alkyl-2-oxazoline)s in hydrogels and biofabrication. Biomater Sci 2021; 9:2874-2886. [PMID: 33729230 DOI: 10.1039/d0bm02217a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Poly(2-alkyl-2-oxazoline)s (PAOXAs) have been rapidly emerging as starting materials in the design of tissue engineering supports and for the generation of platforms for cell cultures, especially in the form of hydrogels. Thanks to their biocompatibility, chemical versatility and robustness, PAOXAs now represent a valid alternative to poly(ethylene glycol)s (PEGs) and their derivatives in these applications, and in the formulation of bioinks for three-dimensional (3D) bioprinting. In this review, we summarize the recent literature where PAOXAs have been used as main components for hydrogels and biofabrication mixtures, especially highlighting how their easily tunable composition could be exploited to fabricate multifunctional biomaterials with an extremely broad spectrum of properties.
Collapse
Affiliation(s)
- Lucca Trachsel
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zürich, 8093 Zürich, Switzerland
| | - Marcy Zenobi-Wong
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zürich, 8093 Zürich, Switzerland
| | - Edmondo M Benetti
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland. and Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014, St. Gallen, Switzerland
| |
Collapse
|
43
|
Majerčíková M, Nádaždy P, Chorvát D, Satrapinskyy L, Valentová H, Kroneková Z, Šiffalovič P, Kronek J, Zahoranová A. Effect of Dexamethasone on Thermoresponsive Behavior of Poly(2-Oxazoline) Diblock Copolymers. Polymers (Basel) 2021; 13:polym13091357. [PMID: 33919321 PMCID: PMC8122420 DOI: 10.3390/polym13091357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/13/2021] [Accepted: 04/17/2021] [Indexed: 01/22/2023] Open
Abstract
Thermoresponsive polymers play an important role in designing drug delivery systems for biomedical applications. In this contribution, the effect of encapsulated hydrophobic drug dexamethasone on thermoresponsive behavior of diblock copolymers was studied. A small series of diblock copoly(2-oxazoline)s was prepared by combining thermoresponsive 2-n-propyl-2-oxazoline (nPrOx) and hydrophilic 2-methyl-2-oxazoline (MeOx) in two ratios and two polymer chain lengths. The addition of dexamethasone affected the thermoresponsive behavior of one of the copolymers, nPrOx20-MeOx180, in the aqueous medium by shifting the cloud point temperature to lower values. In addition, the formation of microparticles containing dexamethasone was observed during the heating of the samples. The morphology and number of microparticles were affected by the structure and concentration of copolymer, the drug concentration, and the temperature. The crystalline nature of formed microparticles was confirmed by polarized light microscopy, confocal Raman microscopy, and wide-angle X-ray scattering. The results demonstrate the importance of studying drug/polymer interactions for the future development of thermoresponsive drug carriers.
Collapse
Affiliation(s)
- Monika Majerčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (M.M.); (Z.K.)
| | - Peter Nádaždy
- Institute of Physics of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia; (P.N.); (P.Š.)
| | - Dušan Chorvát
- International Laser Centre, Department of Biophotonics, Ilkovičova 3, 841 04 Bratislava, Slovakia;
| | - Leonid Satrapinskyy
- Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská Dolina, 842 48 Bratislava, Slovakia;
| | - Helena Valentová
- Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague 2, Czech Republic;
| | - Zuzana Kroneková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (M.M.); (Z.K.)
| | - Peter Šiffalovič
- Institute of Physics of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia; (P.N.); (P.Š.)
- Centre for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia
| | - Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (M.M.); (Z.K.)
- Correspondence: (J.K.); (A.Z.)
| | - Anna Zahoranová
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163MC, A-1060 Vienna, Austria
- Correspondence: (J.K.); (A.Z.)
| |
Collapse
|
44
|
Lavikainen J, Dauletbekova M, Toleutay G, Kaliva M, Chatzinikolaidou M, Kudaibergenov SE, Tenkovtsev A, Khutoryanskiy VV, Vamvakaki M, Aseyev V. Poly(2‐ethyl‐2‐oxazoline) grafted gellan gum for potential application in transmucosal drug delivery. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | | | | | - Maria Kaliva
- Department of Materials Science and Technology University of Crete Crete Greece
- Institute of Electronic Structure and Laser Foundation for Research and Technology—Hellas Crete Greece
| | - Maria Chatzinikolaidou
- Department of Materials Science and Technology University of Crete Crete Greece
- Institute of Electronic Structure and Laser Foundation for Research and Technology—Hellas Crete Greece
| | | | - Andrey Tenkovtsev
- Institute of Macromolecular Compounds of the Russian Academy of Sciences Saint Petersburg Russian Federation
| | | | - Maria Vamvakaki
- Department of Materials Science and Technology University of Crete Crete Greece
- Institute of Electronic Structure and Laser Foundation for Research and Technology—Hellas Crete Greece
| | - Vladimir Aseyev
- Department of Chemistry University of Helsinki Helsinki Finland
| |
Collapse
|
45
|
Poly(2-oxazine)s: A comprehensive overview of the polymer structures, physical properties and applications. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110299] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
46
|
Zahoranová A, Luxenhofer R. Poly(2-oxazoline)- and Poly(2-oxazine)-Based Self-Assemblies, Polyplexes, and Drug Nanoformulations-An Update. Adv Healthc Mater 2021; 10:e2001382. [PMID: 33448122 PMCID: PMC11468752 DOI: 10.1002/adhm.202001382] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/03/2020] [Indexed: 12/30/2022]
Abstract
For many decades, poly(2-oxazoline)s and poly(2-oxazine)s, two closely related families of polymers, have led the life of a rather obscure research topic with only a few research groups world-wide working with them. This has changed in the last five to ten years, presumably triggered significantly by very promising clinical trials of the first poly(2-oxazoline)-based drug conjugate. The huge chemical and structural toolbox poly(2-oxazoline)s and poly(2-oxazine)s has been extended very significantly in the last few years, but their potential still remains largely untapped. Here, specifically, the developments in macromolecular self-assemblies and non-covalent drug delivery systems such as polyplexes and drug nanoformulations based on poly(2-oxazoline)s and poly(2-oxazine)s are reviewed. This highly dynamic field benefits particularly from the extensive synthetic toolbox poly(2-oxazoline)s and poly(2-oxazine)s offer and also may have the largest potential for a further development. It is expected that the research dynamics will remain high in the next few years, particularly as more about the safety and therapeutic potential of poly(2-oxazoline)s and poly(2-oxazine)s is learned.
Collapse
Affiliation(s)
- Anna Zahoranová
- Institute of Applied Synthetic ChemistryVienna University of TechnologyGetreidemarkt 9/163MCVienna1060Austria
| | - Robert Luxenhofer
- Functional Polymer MaterialsChair for Advanced Materials SynthesisInstitute for Functional Materials and BiofabricationDepartment of Chemistry and PharmacyJulius‐Maximilians‐Universität WürzburgRöntgenring 11Würzburg97070Germany
- Soft Matter ChemistryDepartment of ChemistryHelsinki UniversityHelsinki00014Finland
| |
Collapse
|
47
|
You Y, Kobayashi K, Colak B, Luo P, Cozens E, Fields L, Suzuki K, Gautrot J. Engineered cell-degradable poly(2-alkyl-2-oxazoline) hydrogel for epicardial placement of mesenchymal stem cells for myocardial repair. Biomaterials 2021; 269:120356. [PMID: 33189358 PMCID: PMC7884911 DOI: 10.1016/j.biomaterials.2020.120356] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 08/31/2020] [Accepted: 08/31/2020] [Indexed: 02/07/2023]
Abstract
Epicardial placement of mesenchymal stromal cells (MSCs) is a promising strategy for cardiac repair post-myocardial infarction, but requires the design of biomaterials to maximise the retention of donor cells on the heart surface and control their phenotype. To this end, we propose the use of a poly(2-alkyl-2-oxazoline) (POx) derivative, based on 2-ethyl-2-oxazoline and 2-butenyl-2-oxazoline. This POx polymer can be cured rapidly (less than 2 min) via photo-irradiation due to the use of di-cysteine cell degradable peptides. We report that the cell-degradable properties of the resulting POx hydrogels enables the regulation of cell protrusion in corresponding 3D matrices and that this, in turn, regulates the secretory phenotype of MSCs. In particular, the expression of pro-angiogenic genes was upregulated in partially cell-degradable POx hydrogels. Improved angiogenesis was confirmed in an in vitro microfluidic assay. Finally, we confirmed that, owing to the excellent tissue adhesive properties of thiol-ene crosslinked hydrogels, the epicardial placement of MSC-loaded POx hydrogels promoted the recovery of cardiac function and structure with reduced interstitial fibrosis and improved neovascular formation in a rat myocardial infarction model. This report demonstrates that engineered synthetic hydrogels displaying controlled mechanical, cell degradable and bioactive properties are particularly attractive candidates for the epicardial placement of stem cells to promote cardiac repair post myocardial infarction.
Collapse
Affiliation(s)
- Yaqi You
- Institute of Bioengineering, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK; School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK; William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, EC1M 6BQ, UK
| | - Kazuya Kobayashi
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, EC1M 6BQ, UK
| | - Burcu Colak
- Institute of Bioengineering, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK; School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK
| | - Piaopiao Luo
- Institute of Bioengineering, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK; School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK
| | - Edward Cozens
- Institute of Bioengineering, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK; School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK
| | - Laura Fields
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, EC1M 6BQ, UK
| | - Ken Suzuki
- Institute of Bioengineering, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK; William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, EC1M 6BQ, UK.
| | - Julien Gautrot
- Institute of Bioengineering, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK; School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK.
| |
Collapse
|
48
|
Gil Alvaradejo G, Glassner M, Kumar R, Trouillet V, Welle A, Wang Y, de la Rosa VR, Sekula-Neuner S, Hirtz M, Hoogenboom R, Delaittre G. Thioacetate-Based Initiators for the Synthesis of Thiol-End-Functionalized Poly(2-oxazoline)s. Macromol Rapid Commun 2021; 41:e2000320. [PMID: 33463837 DOI: 10.1002/marc.202000320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/14/2020] [Indexed: 11/07/2022]
Abstract
New functional initiators for the cationic ring-opening polymerization of 2-alkyl-2-oxazolines are described to introduce a thiol moiety at the α terminus. Both tosylate and nosylate initiators carrying a thioacetate group are obtained in multigram scale, from commercial reagents in two steps, including a phototriggered thiol-ene radical addition. The nosylate derivative gives access to a satisfying control over the cationic ring-opening polymerization of 2-ethyl-2-oxazoline, with dispersity values lower than 1.1 during the entire course of the polymerization, until full conversion. Cleavage of the thioacetate end group is rapidly achieved using triazabicyclodecene, thereby leading to a mercapto terminus. The latter gives access to a new subgeneration of α-functional poly(2-oxazoline)s (butyl ester, N-hydroxysuccinimidyl ester, furan) by Michael addition with commercial (meth)acrylates. The amenability of the mercapto-poly(2-ethyl-2-oxazoline) for covalent surface patterning onto acrylated surfaces is demonstrated in a microchannel cantilever spotting (µCS) experiment, characterized by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary-ion mass spectrometry (ToF-SIMS).
Collapse
Affiliation(s)
- Gabriela Gil Alvaradejo
- Institute of Biological and Chemical Systems (IBCS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Mathias Glassner
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Ravi Kumar
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Vanessa Trouillet
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Alexander Welle
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Yangxin Wang
- Institute of Biological and Chemical Systems (IBCS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Victor R de la Rosa
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Sylwia Sekula-Neuner
- n.able GmbH, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Michael Hirtz
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Guillaume Delaittre
- Institute of Biological and Chemical Systems (IBCS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Organic Functional Molecules, Organic Chemistry, University of Wuppertal, Gaußstrasse 20, Wuppertal, 42119, Germany
| |
Collapse
|
49
|
Van Zundert I, Fortuni B, Rocha S. From 2D to 3D Cancer Cell Models-The Enigmas of Drug Delivery Research. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2236. [PMID: 33187231 PMCID: PMC7696259 DOI: 10.3390/nano10112236] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/30/2020] [Accepted: 11/08/2020] [Indexed: 02/06/2023]
Abstract
Over the past decades, research has made impressive breakthroughs towards drug delivery systems, resulting in a wide range of multifunctional engineered nanoparticles with biomedical applications such as cancer therapy. Despite these significant advances, well-designed nanoparticles rarely reach the clinical stage. Promising results obtained in standard 2D cell culture systems often turn into disappointing outcomes in in vivo models. Although the overall majority of in vitro nanoparticle research is still performed on 2D monolayer cultures, more and more researchers started acknowledging the importance of using 3D cell culture systems, as better models for mimicking the in vivo tumor physiology. In this review, we provide a comprehensive overview of the 3D cancer cell models currently available. We highlight their potential as a platform for drug delivery studies and pinpoint the challenges associated with their use. We discuss in which way each 3D model mimics the in vivo tumor physiology, how they can or have been used in nanomedicine research and to what extent the results obtained so far affect the progress of nanomedicine development. It is of note that the global scientific output associated with 3D models is limited, showing that the use of these systems in nanomedicine investigation is still highly challenging.
Collapse
Affiliation(s)
| | - Beatrice Fortuni
- Molecular Imaging and Photonics, Chemistry Department, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium;
| | - Susana Rocha
- Molecular Imaging and Photonics, Chemistry Department, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium;
| |
Collapse
|
50
|
Internal Structure of Thermoresponsive Physically Crosslinked Nanogel of Poly[ N-(2-hydroxypropyl)methacrylamide]- Block-Poly[ N-(2,2-difluoroethyl)acrylamide], Prominent 19F MRI Tracer. NANOMATERIALS 2020; 10:nano10112231. [PMID: 33182714 PMCID: PMC7698257 DOI: 10.3390/nano10112231] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/21/2020] [Accepted: 11/05/2020] [Indexed: 12/20/2022]
Abstract
Fluorine-19 MRI is a promising noninvasive diagnostic method. However, the absence of a nontoxic fluorine-19 MRI tracer that does not suffer from poor biodistribution as a result of its strong fluorophilicity is a constant hurdle in the widespread applicability of this otherwise versatile diagnostic technique. The poly[N-(2-hydroxypropyl)methacrylamide]-block-poly[N-(2,2-difluoroethyl)acrylamide] thermoresponsive copolymer was proposed as an alternative fluorine-19 MRI tracer capable of overcoming such shortcomings. In this paper, the internal structure of self-assembled particles of this copolymer was investigated by various methods including 1D and 2D NMR, dynamic light scattering (DLS), small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS). The elucidated structure appears to be that of a nanogel with greatly swollen hydrophilic chains and tightly packed thermoresponsive chains forming a network within the nanogel particles, which become more hydrophobic with increasing temperature. Its capacity to provide a measurable fluorine-19 NMR signal in its aggregated state at human body temperature was also investigated and confirmed. This capacity stems from the different fluorine-19 nuclei relaxation properties compared to those of hydrogen-1 nuclei.
Collapse
|