1
|
Baravkar SB, Lu Y, Masoud AR, Zhao Q, He J, Hong S. Development of a Novel Covalently Bonded Conjugate of Caprylic Acid Tripeptide (Isoleucine-Leucine-Aspartic Acid) for Wound-Compatible and Injectable Hydrogel to Accelerate Healing. Biomolecules 2024; 14:94. [PMID: 38254694 PMCID: PMC10813153 DOI: 10.3390/biom14010094] [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: 12/17/2023] [Revised: 01/07/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Third-degree burn injuries pose a significant health threat. Safer, easier-to-use, and more effective techniques are urgently needed for their treatment. We hypothesized that covalently bonded conjugates of fatty acids and tripeptides can form wound-compatible hydrogels that can accelerate healing. We first designed conjugated structures as fatty acid-aminoacid1-amonoacid2-aspartate amphiphiles (Cn acid-AA1-AA2-D), which were potentially capable of self-assembling into hydrogels according to the structure and properties of each moiety. We then generated 14 novel conjugates based on this design by using two Fmoc/tBu solid-phase peptide synthesis techniques; we verified their structures and purities through liquid chromatography with tandem mass spectrometry and nuclear magnetic resonance spectroscopy. Of them, 13 conjugates formed hydrogels at low concentrations (≥0.25% w/v), but C8 acid-ILD-NH2 showed the best hydrogelation and was investigated further. Scanning electron microscopy revealed that C8 acid-ILD-NH2 formed fibrous network structures and rapidly formed hydrogels that were stable in phosphate-buffered saline (pH 2-8, 37 °C), a typical pathophysiological condition. Injection and rheological studies revealed that the hydrogels manifested important wound treatment properties, including injectability, shear thinning, rapid re-gelation, and wound-compatible mechanics (e.g., moduli G″ and G', ~0.5-15 kPa). The C8 acid-ILD-NH2(2) hydrogel markedly accelerated the healing of third-degree burn wounds on C57BL/6J mice. Taken together, our findings demonstrated the potential of the Cn fatty acid-AA1-AA2-D molecular template to form hydrogels capable of promoting the wound healing of third-degree burns.
Collapse
Affiliation(s)
- Sachin B. Baravkar
- Neuroscience Center of Excellence, School of Medicine, L.S.U. Health, New Orleans, LA 70112, USA
| | - Yan Lu
- Neuroscience Center of Excellence, School of Medicine, L.S.U. Health, New Orleans, LA 70112, USA
| | - Abdul-Razak Masoud
- Neuroscience Center of Excellence, School of Medicine, L.S.U. Health, New Orleans, LA 70112, USA
| | - Qi Zhao
- NMR Laboratory, Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Jibao He
- Microscopy Laboratory, Tulane University, New Orleans, LA 70118, USA
| | - Song Hong
- Neuroscience Center of Excellence, School of Medicine, L.S.U. Health, New Orleans, LA 70112, USA
- Department of Ophthalmology, School of Medicine, L.S.U. Health, New Orleans, LA 70112, USA
| |
Collapse
|
2
|
Prince E, Morozova S, Chen Z, Adibnia V, Yakavets I, Panyukov S, Rubinstein M, Kumacheva E. Nanocolloidal hydrogel mimics the structure and nonlinear mechanical properties of biological fibrous networks. Proc Natl Acad Sci U S A 2023; 120:e2220755120. [PMID: 38091296 PMCID: PMC10743449 DOI: 10.1073/pnas.2220755120] [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: 12/06/2022] [Accepted: 10/03/2023] [Indexed: 12/18/2023] Open
Abstract
Fibrous networks formed by biological polymers such as collagen or fibrin exhibit nonlinear mechanical behavior. They undergo strong stiffening in response to weak shear and elongational strains, but soften under compressional strain, in striking difference with the response to the deformation of flexible-strand networks formed by molecules. The nonlinear properties of fibrous networks are attributed to the mechanical asymmetry of the constituent filaments, for which a stretching modulus is significantly larger than the bending modulus. Studies of the nonlinear mechanical behavior are generally performed on hydrogels formed by biological polymers, which offers limited control over network architecture. Here, we report an engineered covalently cross-linked nanofibrillar hydrogel derived from cellulose nanocrystals and gelatin. The variation in hydrogel composition provided a broad-range change in its shear modulus. The hydrogel exhibited both shear-stiffening and compression-induced softening, in agreement with the predictions of the affine model. The threshold nonlinear stress and strain were universal for the hydrogels with different compositions, which suggested that nonlinear mechanical properties are general for networks formed by rigid filaments. The experimental results were in agreement with an affine model describing deformation of the network formed by rigid filaments. Our results lend insight into the structural features that govern the nonlinear biomechanics of fibrous networks and provide a platform for future studies of the biological impact of nonlinear mechanical properties.
Collapse
Affiliation(s)
- Elisabeth Prince
- Department of Chemistry, University of Toronto, Toronto, ONM5S3H6, Canada
- Department of Chemical Engineering, University of Waterloo, Waterloo, ONN2L3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ONN2L3G1, Canada
| | - Sofia Morozova
- Department of Chemistry, University of Toronto, Toronto, ONM5S3H6, Canada
- N. E. Bauman Moscow State Technical University, Moscow105005, Russia
| | - Zhengkun Chen
- Department of Chemistry, University of Toronto, Toronto, ONM5S3H6, Canada
| | - Vahid Adibnia
- Department of Chemistry, University of Toronto, Toronto, ONM5S3H6, Canada
- Department of Applied Oral Sciences, Faculty of Dentistry, Dalhousie University, Halifax, NSB3H4R2, Canada
| | - Ilya Yakavets
- Department of Chemistry, University of Toronto, Toronto, ONM5S3H6, Canada
| | - Sergey Panyukov
- Center of Soft Matter and Physics of Fluids, P. N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow117924, Russia
- Department of Theoretical Physics, Moscow Institute of Physics and Technology, Moscow 141700, Russia
| | - Michael Rubinstein
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC27708
- Department of Biomedical Engineering, Duke University, Durham, NC27708
- Department of Physics, Duke University, Durham, NC27708
- Department of Chemistry, Duke University, Durham, NC27708
- Institute for Chemical Reaction Design and Discovery, Hokkaido University, Sapporo001-0021, Japan
| | - Eugenia Kumacheva
- Department of Chemistry, University of Toronto, Toronto, ONM5S3H6, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, ONM5S3G9, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ONM5S3E5, Canada
| |
Collapse
|
3
|
Ulker D, Neal TJ, Crawford A, Armes SP. Thermoresponsive Poly( N, N'-dimethylacrylamide)-Based Diblock Copolymer Worm Gels via RAFT Solution Polymerization: Synthesis, Characterization, and Cell Biology Applications. Biomacromolecules 2023; 24:4285-4302. [PMID: 37616242 PMCID: PMC10498450 DOI: 10.1021/acs.biomac.3c00635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/09/2023] [Indexed: 08/26/2023]
Abstract
RAFT solution polymerization is used to polymerize 2-hydroxypropyl methacrylate (HPMA). The resulting PHPMA precursor is then chain-extended using N,N'-dimethylacrylamide (DMAC) to produce a series of thermoresponsive PHPMA-PDMAC diblock copolymers. Such amphiphilic copolymers can be directly dispersed in ice-cold water and self-assembled at 20 °C to form spheres, worms, or vesicles depending on their copolymer composition. Construction of a pseudo-phase diagram is required to identify the pure worm phase, which corresponds to a rather narrow range of PDMAC DPs. Such worms form soft, free-standing gels in aqueous solution at around ambient temperature. Rheology studies confirm the thermoresponsive nature of such worms, which undergo a reversible worm-to-sphere on cooling below ambient temperature. This morphological transition leads to in situ degelation, and variable temperature 1H NMR studies indicate a higher degree of (partial) hydration for the weakly hydrophobic PHPMA chains at lower temperatures. The trithiocarbonate end-group located at the end of each PDMAC chain can be removed by treatment with excess hydrazine. The resulting terminal secondary thiol group can form disulfide bonds via coupling, which produces PHPMA-PDMAC-PHPMA triblock copolymer chains. Alternatively, this reactive thiol group can be used for conjugation reactions. A PHPMA141-PDMAC36 worm gel was used to store human mesenchymal stem cells (MSCs) for up to three weeks at 37 °C. MSCs retrieved from this gel subsequently underwent proliferation and maintained their ability to differentiate into osteoblastic cells.
Collapse
Affiliation(s)
- Damla Ulker
- Dainton
Building, Department of Chemistry, University
of Sheffield, Brook Hill, Sheffield, South
Yorkshire S3 7HF, UK
- Faculty
of Pharmacy, Department of Pharmaceutical Basic Sciences, Near East University, Nicosia, Northern Cyprus TR-99138, Turkey
| | - Thomas J. Neal
- Dainton
Building, Department of Chemistry, University
of Sheffield, Brook Hill, Sheffield, South
Yorkshire S3 7HF, UK
| | - Aileen Crawford
- School
of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield, South Yorkshire S10 2TA, UK
| | - Steven P. Armes
- Dainton
Building, Department of Chemistry, University
of Sheffield, Brook Hill, Sheffield, South
Yorkshire S3 7HF, UK
| |
Collapse
|
4
|
Neal TJ, Penfold NJW, Armes SP. Reverse Sequence Polymerization‐Induced Self‐Assembly in Aqueous Media. Angew Chem Int Ed Engl 2022; 61:e202207376. [PMID: 35678548 PMCID: PMC9541501 DOI: 10.1002/anie.202207376] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Indexed: 11/06/2022]
Abstract
We report a new aqueous polymerization‐induced self‐assembly (PISA) formulation that enables the hydrophobic block to be prepared first when targeting diblock copolymer nano‐objects. This counter‐intuitive reverse sequence approach uses an ionic reversible addition–fragmentation chain transfer (RAFT) agent for the RAFT aqueous dispersion polymerization of 2‐hydroxypropyl methacrylate (HPMA) to produce charge‐stabilized latex particles. Chain extension using a water‐soluble methacrylic, acrylic or acrylamide comonomer then produces sterically stabilized diblock copolymer nanoparticles in an aqueous one‐pot formulation. In each case, the monomer diffuses into the PHPMA particles, which act as the locus for the polymerization. A remarkable change in morphology occurs as the ≈600 nm latex is converted into much smaller sterically stabilized diblock copolymer nanoparticles, which exhibit thermoresponsive behavior. Such reverse sequence PISA formulations enable the efficient synthesis of new functional diblock copolymer nanoparticles.
Collapse
Affiliation(s)
- Thomas J. Neal
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| | - Nicholas J. W. Penfold
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| | - Steven P. Armes
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| |
Collapse
|
5
|
Ebhodaghe SO. A short review on chitosan and gelatin-based hydrogel composite polymers for wound healing. JOURNAL OF BIOMATERIALS SCIENCE, POLYMER EDITION 2022; 33:1595-1622. [DOI: 10.1080/09205063.2022.2068941] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
|
6
|
Maity B, Alam S, Samanta S, Prakash RG, Govindaraju T. Antioxidant Silk Fibroin Composite Hydrogel for Rapid Healing of Diabetic Wound. Macromol Biosci 2022; 22:e2200097. [PMID: 35920099 DOI: 10.1002/mabi.202200097] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 07/19/2022] [Indexed: 11/08/2022]
Abstract
Wound healing is a complex process requiring multiple biological pathways and chemical responses to be activated and synchronized to recover tissue integrity. In normal physiological circumstances, the epidermal barrier restoration process through new tissue formation is highly efficient. However, increased production of reactive oxygen species, attack of pathogenic microorganisms, and high glucose level delay the normal healing process in diabetic patients. The successful treatment of diabetic wounds requires efficient strategies to control oxidative stress, promoting angiogenesis, re-epithelialization, and collagen deposition. In this study, we developed a composite hydrogel for rapid wound healing in diabetic condition by the amalgamation of hypolipidemic property of silk fibroin (SF), antioxidant property of melanin and therapeutic effect of berberine. Studies have revealed that cross-linked mesoporous morphology of hydrogel matrix facilitates slow release of berberine to impart long-term therapeutic effects at wound site. The composite hydrogel formulation is biocompatible, stimulates effective migration of fibroblast cells, and control oxidative stress under in vitro conditions. The hydrogel served as scaffold for tissue re-epithelialization and promotes wound repair in diabetic type I Wistar rat model. This study demonstrates the ability of berberine- loaded SF-melanin composite hydrogel (SFCH) as a potential dressing formulation for wound healing in diabetic conditions. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Biswanath Maity
- Bioorganic Chemistry Laboratory, New Chemistry Unit, and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, Karnataka, 560064, India
| | - Shadab Alam
- Bioorganic Chemistry Laboratory, New Chemistry Unit, and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, Karnataka, 560064, India
| | - Sourav Samanta
- Bioorganic Chemistry Laboratory, New Chemistry Unit, and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, Karnataka, 560064, India
| | - Relekar G Prakash
- Bioorganic Chemistry Laboratory, New Chemistry Unit, and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, Karnataka, 560064, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, Karnataka, 560064, India
| |
Collapse
|
7
|
Neal TJ, Penfold NJW, Armes SP. Reverse Sequence Polymerization‐Induced Self‐Assembly in Aqueous Media. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Thomas J. Neal
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| | - Nicholas J. W. Penfold
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| | - Steven P. Armes
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| |
Collapse
|
8
|
Diffusion-controlled release of the theranostic protein-photosensitizer Azulitox from composite of Fmoc-Phenylalanine Fibrils encapsulated with BSA hydrogels. J Biotechnol 2021; 341:51-62. [PMID: 34464649 DOI: 10.1016/j.jbiotec.2021.08.014] [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: 12/18/2020] [Revised: 08/06/2021] [Accepted: 08/25/2021] [Indexed: 12/21/2022]
Abstract
Hydrogels offer a promising potential for the encapsulation and regulated release of drugs due to their biocompatibility and their tunable properties as materials. Only a limited number of systems and procedures enable the encapsulation of sensitive proteins. N-terminally fmoc-protected phenylalanine has been shown to self-assemble into a transparent, stable hydrogel It can be considered a supergelator due to the low amount of monomers necessary for hydrogelation (0.1% w/v), making it a good candidate for the encapsulation and stabilization of sensitive proteins. However, application options for this hydrogel are rather limited to those of many other fibril-based materials due to its intrinsic lack of mechanical strength and high susceptibility to changes in environmental conditions. Here, we demonstrate that the stability of a fibrillary system and the resulting release of the protein-photosensitizer Azulitox can be increased by combining the hydrogel with a tightly cross-linked BSA hydrogel. Azulitox is known to display cell-penetrating properties, anti-proliferative activity and has a distinctive fluorescence. Confocal microscopy and fluorescence measurements verified the maintenance of all essential functions of the encapsulated protein. In contrast, the combination of fibrillary and protein hydrogel resulted in a significant stabilization of the matrix and an adjustable release pattern for encapsulated protein.
Collapse
|
9
|
Prado RMB, Mishra S, Ahmad H, Burghardt WR, Kundu S. Capturing the Transient Microstructure of a Physically Assembled Gel Subjected to Temperature and Large Deformation. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00895] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rosa Maria Badani Prado
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Satish Mishra
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Humayun Ahmad
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Wesley R. Burghardt
- Department of Chemical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Santanu Kundu
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
| |
Collapse
|
10
|
Nawaz HA, Schröck K, Schmid M, Krieghoff J, Maqsood I, Kascholke C, Kohn-Polster C, Schulz-Siegmund M, Hacker MC. Injectable oligomer-cross-linked gelatine hydrogels via anhydride-amine-conjugation. J Mater Chem B 2021; 9:2295-2307. [PMID: 33616150 DOI: 10.1039/d0tb02861d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Injectable gelatine-based hydrogels are valuable tools for drug and cell delivery due to their extracellular matrix-like properties that can be adjusted by the degree of cross-linking. We have established anhydride-containing oligomers for the cross-linking of gelatine via anhydride-amine-conjugation. So far, this conversion required conditions not compatible with cell encapsulation or in vivo injection. In order to overcome this limitation, we developed an array of quarter-oligomers varying in comonomer composition and contents of reactive anhydride units reactive towards amine groups under physiological conditions. The oligomers were of low molecular weight (Mn < 5 kDa) with a high degree of chemically intact anhydrides. Chemical comonomer composition was determined by 1H-NMR. Dissolutions experiments confirmed improved hydrophilicity of the synthesized oligomers over our established compositions. Injectable formulations are described utilizing cytocompatible concentrations of constituent materials and proton-scavenging base. Degree of cross-linking and stiffness of injectable hydrogels were controlled by composition. The gels hold promise as injectable drug or cell carrier and as bioink.
Collapse
Affiliation(s)
- Hafiz Awais Nawaz
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany and Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Abdul Qadir Jillani road, Lahore, Pakistan
| | - Kathleen Schröck
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Maximilian Schmid
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Jan Krieghoff
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Iram Maqsood
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Christian Kascholke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Caroline Kohn-Polster
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Michael C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany and Institute of Pharmaceutics and Biopharmaceutics, Heinrich-Heine-Universität, Universitätsstraße 1, Düsseldorf, 40225 Düsseldorf, Germany.
| |
Collapse
|
11
|
He JJ, McCarthy C, Camci-Unal G. Development of Hydrogel‐Based Sprayable Wound Dressings for Second‐ and Third‐Degree Burns. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Jacqueline Jialu He
- Department of Chemical Engineering University of Massachusetts Lowell One University Avenue Lowell MA 01854 USA
- Biomedical Engineering and Biotechnology Program University of Massachusetts Lowell One University Avenue Lowell MA 01854 USA
| | - Colleen McCarthy
- Department of Chemical Engineering University of Massachusetts Lowell One University Avenue Lowell MA 01854 USA
| | - Gulden Camci-Unal
- Department of Chemical Engineering University of Massachusetts Lowell One University Avenue Lowell MA 01854 USA
- Department of Surgery University of Massachusetts Medical School 55 Lake Avenue Worcester MA 01655 USA
| |
Collapse
|
12
|
North SM, Armes SP. One-pot synthesis and aqueous solution properties of pH-responsive schizophrenic diblock copolymer nanoparticles prepared via RAFT aqueous dispersion polymerization. Polym Chem 2021. [DOI: 10.1039/d1py01114f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Well-defined doubly pH-responsive schizophrenic diblock copolymer nanoparticles with tunable isoelectric points are prepared via RAFT aqueous dispersion polymerization using an efficient one-pot protocol.
Collapse
Affiliation(s)
- S. M. North
- Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK
| | - S. P. Armes
- Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK
| |
Collapse
|
13
|
Beattie DL, Mykhaylyk OO, Armes SP. Enthalpic incompatibility between two steric stabilizer blocks provides control over the vesicle size distribution during polymerization-induced self-assembly in aqueous media. Chem Sci 2020; 11:10821-10834. [PMID: 33209249 PMCID: PMC7654191 DOI: 10.1039/d0sc01320j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/19/2020] [Indexed: 01/05/2023] Open
Abstract
Over the past two decades, block copolymer vesicles have been widely used by many research groups to encapsulate small molecule drugs, genetic material, nanoparticles or enzymes. They have also been used to design examples of autonomous self-propelled nanoparticles. Traditionally, such vesicles are prepared via post-polymerization processing using a water-miscible co-solvent such as DMF or THF. However, such protocols are invariably conducted in dilute solution, which is a significant disadvantage. In addition, the vesicle size distribution is often quite broad, whereas aqueous dispersions of relatively small vesicles with narrow size distributions are highly desirable for potential biomedical applications. Alternatively, concentrated dispersions of block copolymer vesicles can be directly prepared via polymerization-induced self-assembly (PISA). Moreover, using a binary mixture of a relatively long and a relatively short steric stabilizer block enables the convenient PISA synthesis of relatively small vesicles with reasonably narrow size distributions in alcoholic media (C. Gonzato et al., JACS, 2014, 136, 11100-11106). Unfortunately, this approach has not yet been demonstrated for aqueous media, which would be much more attractive for commercial applications. Herein we show that this important technical objective can be achieved by judicious use of two chemically distinct, enthalpically incompatible steric stabilizer blocks, which ensures the desired microphase separation across the vesicle membrane. This leads to the formation of well-defined vesicles of around 200 nm diameter (size polydispersity = 13-16%) in aqueous media at 10% w/w solids as judged by transmission electron microscopy, dynamic light scattering and small-angle X-ray scattering.
Collapse
Affiliation(s)
- Deborah L Beattie
- Department of Chemistry , University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire, S3 7HF , UK . ;
| | - Oleksandr O Mykhaylyk
- Department of Chemistry , University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire, S3 7HF , UK . ;
| | - Steven P Armes
- Department of Chemistry , University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire, S3 7HF , UK . ;
| |
Collapse
|
14
|
Bobde Y, Biswas S, Ghosh B. Current trends in the development of HPMA-based block copolymeric nanoparticles for their application in drug delivery. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
15
|
North SM, Armes SP. Aqueous solution behavior of stimulus-responsive poly(methacrylic acid)-poly(2-hydroxypropyl methacrylate) diblock copolymer nanoparticles. Polym Chem 2020. [DOI: 10.1039/d0py00061b] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
RAFT aqueous dispersion polymerization is used to prepare poly(methacrylic acid)-poly(2-hydroxypropyl methacrylate) diblock copolymer nanoparticles, which exhibit stimulus-responsive behaviour on adjusting the solution temperature and/or solution pH.
Collapse
|
16
|
Ye YN, Cui K, Indei T, Nakajima T, Hourdet D, Kurokawa T, Gong JP. Relaxation Dynamics and Underlying Mechanism of a Thermally Reversible Gel from Symmetric Triblock Copolymer. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01856] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | - Dominique Hourdet
- Laboratoire Sciences et Ingénierie de la Matière Molle, ESPCI Paris, PSL University, Sorbonne Université, CNRS, Paris F-75005, France
| | | | | |
Collapse
|
17
|
Ribeiro AM, Flores-Sahagun THS. Application of stimulus-sensitive polymers in wound healing formulation. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1655744] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Andreza M Ribeiro
- Engineering and Material Science, University Federal of Paraná, Curitiba, Brazil
| | | |
Collapse
|
18
|
Uppuluri VNVA, Shanmugarajan TS. Icariin-Loaded Polyvinyl Alcohol/Agar Hydrogel: Development, Characterization, and In Vivo Evaluation in a Full-Thickness Burn Model. INT J LOW EXTR WOUND 2019; 18:323-335. [PMID: 31140339 DOI: 10.1177/1534734619849982] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Tissue regeneration has become a promising strategy for repairing damaged skin tissues. Among the hydrogels for tissue regeneration applications, topical hydrogels have demonstrated great potential for use as 3D-scaffolds in the burn wound healing process. Currently, no report has been published specifically on icariin-loaded polyvinyl alcohol (PVA)/agar hydrogel on full-thickness burn wounds. In the present study, burn tissue regeneration based on biomimetic hydrogel scaffolds was used for repairing damaged extracellular matrix. Furthermore, a skin burn model was developed in rats, and the icariin-loaded PVA/agar hydrogels were implanted into the damaged portions. The regeneration of the damaged tissues with the help of the icariin-loaded hydrogel group exhibited new translucent skin tissues and repaired extracellular matrix, indicating that the hydrogel can enhance the wound healing process. Moreover, characterization studies such as X-ray diffraction, Fourier-transformed infrared spectroscopy, and differential scanning calorimetry reported the extent of compatibility between icariin and its polymers. Results of the field emission scanning electron microscopy images revealed the extent of the spread of icariin within the polymer-based hydrogel. Furthermore, the wound healing potential, confirmed by histopathological and histochemical findings at the end of 21 days, revealed the visual evidence for the biomimetic property of icariin-loaded PVA/agar hydrogel scaffolds with the extracellular matrix for tissue regeneration.
Collapse
Affiliation(s)
| | - T S Shanmugarajan
- Vels Institute of Science, Technology & Advanced Studies (VISTAS), Chennai, India
| |
Collapse
|
19
|
Effects of Main-chain and Chain-ends on the Organogelation of Stearoyl Appended Pendant Valine Based Polymers. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2265-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
20
|
Korde JM, Kandasubramanian B. Fundamentals and Effects of Biomimicking Stimuli-Responsive Polymers for Engineering Functions. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00683] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jay M. Korde
- Biocomposite Laboratory, Department of Metallurgical & Materials Engineering, DIAT (DU), Ministry of Defence, Girinagar, Pune-411025, India
| | - Balasubramanian Kandasubramanian
- Biocomposite Laboratory, Department of Metallurgical & Materials Engineering, DIAT (DU), Ministry of Defence, Girinagar, Pune-411025, India
| |
Collapse
|
21
|
Alapure BV, Lu Y, He M, Chu CC, Peng H, Muhale F, Brewerton YL, Bunnell B, Hong S. Accelerate Healing of Severe Burn Wounds by Mouse Bone Marrow Mesenchymal Stem Cell-Seeded Biodegradable Hydrogel Scaffold Synthesized from Arginine-Based Poly(ester amide) and Chitosan. Stem Cells Dev 2018; 27:1605-1620. [PMID: 30215325 PMCID: PMC6276600 DOI: 10.1089/scd.2018.0106] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 09/12/2018] [Indexed: 12/20/2022] Open
Abstract
Severe burns are some of the most challenging problems in clinics and still lack ideal modalities. Mesenchymal stem cells (MSCs) incorporated with biomaterial coverage of burn wounds may offer a viable solution. In this report, we seeded MSCs to a biodegradable hybrid hydrogel, namely ACgel, that was synthesized from unsaturated arginine-based poly(ester amide) (UArg-PEA) and chitosan derivative. MSC adhered to ACgels. ACgels maintained a high viability of MSCs in culture for 6 days. MSC seeded to ACgels presented well in third-degree burn wounds of mice at 8 days postburn (dpb) after the necrotic full-thickness skin of burn wounds was debrided and filled and covered by MSC-carrying ACgels. MSC-seeded ACgels promoted the closure, reepithelialization, granulation tissue formation, and vascularization of the burn wounds. ACgels alone can also promote vascularization but less effectively compared with MSC-seeded ACgels. The actions of MSC-seeded ACgels or ACgels alone involve the induction of reparative, anti-inflammatory interleukin-10, and M2-like macrophages, as well as the reduction of inflammatory cytokine TNFα and M1-like macrophages at the late inflammatory phase of burn wound healing, which provided the mechanistic insights associated with inflammation and macrophages in burn wounds. For the studied regimens of these treatments, no toxicity was identified to MSCs or mice. Our results indicate that MSC-seeded ACgels have potential use as a novel adjuvant therapy for severe burns to complement commonly used skin grafting and, thus, minimize the downsides of grafting.
Collapse
Affiliation(s)
- Bhagwat V. Alapure
- Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Yan Lu
- Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Mingyu He
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, New York
| | - Chih-Chang Chu
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, New York
- Department of Biomedical Engineering, Cornell University, Ithaca, New York
| | - Hongying Peng
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Filipe Muhale
- Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | | | - Bruce Bunnell
- Center for Stem Cell Research and Regenerative Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Song Hong
- Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
- Department of Ophthalmology, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| |
Collapse
|
22
|
Wang X, Shen L, An Z. Dispersion polymerization in environmentally benign solvents via reversible deactivation radical polymerization. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.05.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
23
|
Wang X, An Z. New Insights into RAFT Dispersion Polymerization-Induced Self-Assembly: From Monomer Library, Morphological Control, and Stability to Driving Forces. Macromol Rapid Commun 2018; 40:e1800325. [PMID: 29974537 DOI: 10.1002/marc.201800325] [Citation(s) in RCA: 145] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/28/2018] [Indexed: 12/26/2022]
Abstract
Polymerization-induced self-assembly (PISA) has been established as an efficient, robust, and versatile approach to synthesize various block copolymer nano-objects with controlled morphologies, tunable dimensions, and diverse functions. The relatively high concentration and potential scalability makes it a promising technique for industrial production and practical applications of functional polymeric nanoparticles. This feature article outlines recent advances in PISA via reversible addition-fragmentation chain transfer dispersion polymerization. Considerable efforts to understand morphological control, broaden the monomer library, enhance morphological stability, and incorporate multiple driving forces in PISA syntheses are summarized herein. Finally, perspectives on the future of PISA research are discussed.
Collapse
Affiliation(s)
- Xiao Wang
- Institute of Nanochemistry and Nanobiology, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
| | - Zesheng An
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
| |
Collapse
|
24
|
Sun G, Shen YI, Harmon JW. Engineering Pro-Regenerative Hydrogels for Scarless Wound Healing. Adv Healthc Mater 2018; 7:e1800016. [PMID: 29663707 DOI: 10.1002/adhm.201800016] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/17/2018] [Indexed: 12/21/2022]
Abstract
Skin and skin appendages protect the body from harmful environment and prevent internal organs from dehydration. Superficial epidermal wounds usually heal without scarring, however, deep dermal wound healing commonly ends up with nonfunctioning scar formation with substantial loss of skin appendage. Wound healing is one of the most complex dynamic biological processes, during which a cascade of biomolecules combine with stem cell influx and matrix synthesis and synergistically contribute to wound healing at all levels. Although many approaches have been investigated to restore complete skin, the clinically effective therapy is still unavailable and the regeneration of perfect skin still remains a significant challenge. The complete mechanism behind scarless skin regeneration still requires further investigation. Fortunately, recent advancement in regenerative medicine empowers us more than ever to restore tissue in a regenerative manner. Many studies have elucidated and reviewed the contribution of stem cells and growth factors to scarless wound healing. This article focuses on recent advances in scarless wound healing, especially strategies to engineer pro-regenerative scaffolds to restore damaged skin in a regenerative manner.
Collapse
Affiliation(s)
- Guoming Sun
- Sunogel Biotechnologies Inc.; 9 W Ridgely Road Ste 270 Lutherville Timonium MD 21093 USA
| | - Yu-I Shen
- Sunogel Biotechnologies Inc.; 9 W Ridgely Road Ste 270 Lutherville Timonium MD 21093 USA
| | - John W. Harmon
- Department of Surgery and the Hendrix Burn Lab; Johns Hopkins University School of Medicine; Baltimore MD 21224 USA
| |
Collapse
|
25
|
Karatza A, Pispas S. Poly(hydroxyl propyl methacrylate)-b
-Poly(oligo ethylene glycol methacrylate) Thermoresponsive Block Copolymers by RAFT Polymerization. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Anna Karatza
- Theoretical and Physical Chemistry Institute; National Hellenic Research Foundation; 48 Vassileos Constantinou Ave 11635 Athens Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute; National Hellenic Research Foundation; 48 Vassileos Constantinou Ave 11635 Athens Greece
| |
Collapse
|
26
|
Zhang Z, Wang X, Wang Y, Hao J. Rapid-Forming and Self-Healing Agarose-Based Hydrogels for Tissue Adhesives and Potential Wound Dressings. Biomacromolecules 2018; 19:980-988. [PMID: 29451778 DOI: 10.1021/acs.biomac.7b01764] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
To meet the progressive requirements of advanced engineering materials with superior physicochemical performances, self-healing and injectable hydrogels (AD hydrogels) based on agarose with pH-response were prepared through dynamic covalent Schiff-base linkages by simply mixing nontoxic agarose-ethylenediamine conjugate (AG-NH2) and dialdehyde-functionalized polyethylene glycol (DF-PEG) solutions. The self-healing and injectable capabilities of the hydrogels without any external stimulus are ascribed to dynamic covalent Schiff-base linkages between the aldehyde groups of DF-PEG and amine groups on AG-NH2 backbone. It is demonstrated that the AD hydrogels possess interconnected porous morphologies, rapid gelation time, excellent deformability, and good mechanical strength. The incorporated Schiff's base imparts the hydrogels to the remarkable tissue adhesiveness. In vivo hemostatic tests on rabbit liver demonstrate that the hydrogels are able to stanch the severe trauma effectively. Compared with the conventional gauze treatment, the total amount of bleeding sharply declined to be (0.19 ± 0.03) g, and hemostasis time was strikingly shorter than 10 s after treating with AD hydrogels. In summary, the self-healing ability, cytocompatibility, and adhesion characteristic of the pH-responsive hydrogels make them promising candidates for long-lived wound dressings in critical situations.
Collapse
Affiliation(s)
- Zhuo Zhang
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , (Shandong University), Ministry of Education , Jinan 250100 , P. R. China
| | - Xiaolin Wang
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , (Shandong University), Ministry of Education , Jinan 250100 , P. R. China
| | - Yitong Wang
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , (Shandong University), Ministry of Education , Jinan 250100 , P. R. China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , (Shandong University), Ministry of Education , Jinan 250100 , P. R. China
| |
Collapse
|
27
|
Aso A, Taki K, Maeda T, Toma K, Tamiaki H, Hotta A. Composition‐dependent sol‐gel transition of amphiphilic blend of PEG with hydrophobic gallamide components. J Appl Polym Sci 2017. [DOI: 10.1002/app.45402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Akihiro Aso
- Department of Mechanical EngineeringKeio University3‐14‐1, Hiyoshi, Kohoku‐ku, Yokohama223‐8522 Japan
| | - Kazutaka Taki
- Graduate School of Life SciencesRitsumeikan UniversityNoji‐higashi 1‐1‐1, Kusatsu Shiga525‐8577 Japan
| | - Tomoki Maeda
- Department of Mechanical EngineeringKeio University3‐14‐1, Hiyoshi, Kohoku‐ku, Yokohama223‐8522 Japan
| | - Kazunori Toma
- Asahi Kasei Corporation2‐1, Samejima, Fuji Shizuoka416‐8501 Japan
| | - Hitoshi Tamiaki
- Graduate School of Life SciencesRitsumeikan UniversityNoji‐higashi 1‐1‐1, Kusatsu Shiga525‐8577 Japan
| | - Atsushi Hotta
- Department of Mechanical EngineeringKeio University3‐14‐1, Hiyoshi, Kohoku‐ku, Yokohama223‐8522 Japan
| |
Collapse
|
28
|
Hu X, Sun A, Kang W, Zhou Q. Strategies and knowledge gaps for improving nanomaterial biocompatibility. ENVIRONMENT INTERNATIONAL 2017; 102:177-189. [PMID: 28318601 DOI: 10.1016/j.envint.2017.03.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/26/2017] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
With rapid development of nanotechnology and nanomaterials, nanosafety has attracted wide attention in all fields related to nanotechnology. As well known, a grand challenge in nanomaterial applications is their biocompatibility. It is urgent to explore effective strategies to control the unintentional effects. Although many novel methods for the synthesis of biocompatible and biodegradable nanomaterials are reported, the control strategy of nanotoxicity remains in its infancy. It is urgent to review the archived strategies for improving nanomaterial biocompatibility to clarify what we have done and where we should be. In this review, the achievements and challenges in nanomaterial structure/surface modifications and size/shape controls were analyzed. Moreover, the chemical and biological strategies to make nanomaterial more biocompatible and biodegradable were compared. Finally, the concerns that have not been studied well were prospected, involving unintended releases, life-cycle, occupational exposure and methodology.
Collapse
Affiliation(s)
- Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
| | - Anqi Sun
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Weilu Kang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Qixing Zhou
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| |
Collapse
|
29
|
A Comprehensive Systematic Study on Thermoresponsive Gels: Beyond the Common Architectures of Linear Terpolymers. Polymers (Basel) 2017; 9:polym9010031. [PMID: 30970709 PMCID: PMC6432086 DOI: 10.3390/polym9010031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 01/12/2017] [Accepted: 01/16/2017] [Indexed: 12/21/2022] Open
Abstract
In this study, seven thermoresponsive methacrylate terpolymers with the same molar mass (MM) and composition but various architectures were successfully synthesized using group transfer polymerization (GTP). These terpolymers were based on tri(ethylene glycol) methyl ether methacrylate (TEGMA, A unit), n-butyl methacrylate (BuMA, B unit), and 2-(dimethylamino)ethyl methacrylate (DMAEMA, C unit). Along with the more common ABC, ACB, BAC, and statistical architectures, three diblock terpolymers were also synthesized and investigated for the first time, namely (AB)C, A(BC), and B(AC); where the units in the brackets are randomly copolymerized. Two BC diblock copolymers were also synthesized for comparison. Their hydrodynamic diameters and their effective pKas were determined by dynamic light scattering (DLS) and hydrogen ion titrations, respectively. The self-assembly behavior of the copolymers was also visualized by transmission electron microscopy (TEM). Both dilute and concentrated aqueous copolymer solutions were extensively studied by visual tests and their cloud points (CP) and gel points were determined. It is proven that the aqueous solution properties of the copolymers, with specific interest in their thermoresponsive properties, are influenced by the architecture, with the ABC and A(BC) ones to show clear sol-gel transition.
Collapse
|
30
|
Wang P, Chu W, Zhuo X, Zhang Y, Gou J, Ren T, He H, Yin T, Tang X. Modified PLGA–PEG–PLGA thermosensitive hydrogels with suitable thermosensitivity and properties for use in a drug delivery system. J Mater Chem B 2017; 5:1551-1565. [DOI: 10.1039/c6tb02158a] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PLGA–PEG–PLGA (PPP) triblock copolymer is the most widely studied thermosensitive hydrogel owing to its non-toxic, biocompatible, biodegradable, and thermosensitive properties.
Collapse
Affiliation(s)
- Puxiu Wang
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Wei Chu
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Xuezhi Zhuo
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Yu Zhang
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Jingxin Gou
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Tianyang Ren
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Haibing He
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Tian Yin
- School of Functional Food and Wine
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Xing Tang
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- China
| |
Collapse
|
31
|
Ren K, Perez-Mercader J. Thermoresponsive gels directly obtained via visible light-mediated polymerization-induced self-assembly with oxygen tolerance. Polym Chem 2017. [DOI: 10.1039/c7py00558j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A thermoresponsive reversible hydrogel is developed by PET-RAFT mediated PISA in aqueous solution at room temperature without deoxygenation.
Collapse
Affiliation(s)
- Kaixuan Ren
- Department of Earth and Planetary Sciences and Origins of Life Initiative
- Harvard University
- Cambridge
- USA
| | - Juan Perez-Mercader
- Department of Earth and Planetary Sciences and Origins of Life Initiative
- Harvard University
- Cambridge
- USA
- Santa Fe Institute
| |
Collapse
|
32
|
Guo J, Liu X, Jiang N, Yetisen AK, Yuk H, Yang C, Khademhosseini A, Zhao X, Yun SH. Highly Stretchable, Strain Sensing Hydrogel Optical Fibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:10244-10249. [PMID: 27714887 PMCID: PMC5148684 DOI: 10.1002/adma.201603160] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/14/2016] [Indexed: 05/17/2023]
Abstract
A core-clad fiber made of elastic, tough hydrogels is highly stretchable while guiding light. Fluorescent dyes are easily doped into the hydrogel fiber by diffusion. When stretched, the transmission spectrum of the fiber is altered, enabling the strain to be measured and also its location.
Collapse
Affiliation(s)
- Jingjing Guo
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, 65 Landsdowne Street, Cambridge, Massachusetts 02139, USA. State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
| | - Xinyue Liu
- Soft Active Materials Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Nan Jiang
- Biomaterials Innovation Research Center, Engineering in Medicine Division, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts, 02139, USA. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122, Luoshi Road, Wuhan, 430070, China
| | - Ali K. Yetisen
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, 65 Landsdowne Street, Cambridge, Massachusetts 02139, USA
| | - Hyunwoo Yuk
- Soft Active Materials Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Changxi Yang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Engineering in Medicine Division, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts, 02139, USA
| | - Xuanhe Zhao
- Soft Active Materials Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Seok-Hyun Yun
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, 65 Landsdowne Street, Cambridge, Massachusetts 02139, USA
| |
Collapse
|
33
|
Horn S, Pieters R, Bezuidenhout C. Pathogenic features of heterotrophic plate count bacteria from drinking-water boreholes. JOURNAL OF WATER AND HEALTH 2016; 14:890-900. [PMID: 27959868 DOI: 10.2166/wh.2016.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Evidence suggests that heterotrophic plate count (HPC) bacteria may be hazardous to humans with weakened health. We investigated the pathogenic potential of HPC bacteria from untreated borehole water, consumed by humans, for: their haemolytic properties, the production of extracellular enzymes such as DNase, proteinase, lipase, lecithinase, hyaluronidase and chondroitinase, the effect simulated gastric fluid has on their survival, as well as the bacteria's antibiotic-susceptible profile. HuTu-80 cells acted as model for the human intestine and were exposed to the HPC isolates to determine their effects on the viability of the cells. Several HPC isolates were α- or β-haemolytic, produced two or more extracellular enzymes, survived the SGF treatment, and showed resistance against selected antibiotics. The isolates were also harmful to the human intestinal cells to varying degrees. A novel pathogen score was calculated for each isolate. Bacillus cereus had the highest pathogen index: the pathogenicity of the other bacteria declined as follows: Aeromonas taiwanensis > Aeromonas hydrophila > Bacillus thuringiensis > Alcaligenes faecalis > Pseudomonas sp. > Bacillus pumilus > Brevibacillus sp. > Bacillus subtilis > Bacillus sp. These results demonstrated that the prevailing standards for HPCs in drinking water may expose humans with compromised immune systems to undue risk.
Collapse
Affiliation(s)
- Suranie Horn
- Unit for Environmental Sciences and Management, Potchefstroom Campus, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa E-mail:
| | - Rialet Pieters
- Unit for Environmental Sciences and Management, Potchefstroom Campus, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa E-mail:
| | - Carlos Bezuidenhout
- Unit for Environmental Sciences and Management, Potchefstroom Campus, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa E-mail:
| |
Collapse
|
34
|
Wang P, Wang Q, Ren T, Gong H, Gou J, Zhang Y, Cai C, Tang X. Effects of Pluronic F127-PEG multi-gel-core on the release profile and pharmacodynamics of Exenatide loaded in PLGA microspheres. Colloids Surf B Biointerfaces 2016; 147:360-367. [DOI: 10.1016/j.colsurfb.2016.08.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/26/2016] [Accepted: 08/19/2016] [Indexed: 12/21/2022]
|
35
|
Hu B, Fu W, Zhao B. Enhancing Gelation of Doubly Thermosensitive Hydrophilic ABC Linear Triblock Copolymers in Water by Thermoresponsive Hairy Nanoparticles. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01156] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Bin Hu
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Wenxin Fu
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Bin Zhao
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
36
|
Harvey AC, Madsen J, Douglas CWI, MacNeil S, Armes SP. Antimicrobial Graft Copolymer Gels. Biomacromolecules 2016; 17:2710-8. [DOI: 10.1021/acs.biomac.6b00760] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amanda C. Harvey
- Department
of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
- Unit
of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield,
South Yorkshire, S10 2TA, United Kingdom
- The
Kroto Research Institute, Department of Engineering Materials, University of Sheffield, Broad Lane, Sheffield, South
Yorkshire, S3 7HQ, United Kingdom
| | - Jeppe Madsen
- Department
of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
| | - C. W. Ian Douglas
- Unit
of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield,
South Yorkshire, S10 2TA, United Kingdom
| | - Sheila MacNeil
- The
Kroto Research Institute, Department of Engineering Materials, University of Sheffield, Broad Lane, Sheffield, South
Yorkshire, S3 7HQ, United Kingdom
| | - Steven P. Armes
- Department
of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
| |
Collapse
|
37
|
Parani M, Lokhande G, Singh A, Gaharwar AK. Engineered Nanomaterials for Infection Control and Healing Acute and Chronic Wounds. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10049-69. [PMID: 27043006 DOI: 10.1021/acsami.6b00291] [Citation(s) in RCA: 145] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanoengineered biomaterials have dramatically expanded the range of tools used for infection control and to accelerate wound healing. This review thoroughly describes the developments that are shaping this emerging field and evaluates the potential wound healing applications of recently developed engineered nanomaterials for both acute and chronic wounds. Specifically, we will assess the unique characteristics of engineered nanomaterials that render them applicable for wound healing and infection control. A range of engineered nanomaterials, including polymeric-, metallic- and ceramic-based nanomaterials, that could be used as therapeutic delivery agents to accelerate regeneration of damaged dermal and epidermal tissues are also detailed. Finally, we will detail the current state of engineered nanomaterials for wound regeneration and will identify promising new research directions in infection control.
Collapse
Affiliation(s)
- Madasamy Parani
- Genomics Laboratory, Department of Genetic Engineering, SRM University , Chennai, Tamil Nadu 603 203, India
| | | | - Ankur Singh
- Sibley School of Mechanical and Aerospace Engineering, Cornell University , Ithaca, New York 14853, United States
| | | |
Collapse
|
38
|
Frequent mechanical stress suppresses proliferation of mesenchymal stem cells from human bone marrow without loss of multipotency. Sci Rep 2016; 6:24264. [PMID: 27080570 PMCID: PMC4832181 DOI: 10.1038/srep24264] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 03/23/2016] [Indexed: 12/25/2022] Open
Abstract
Mounting evidence indicated that human mesenchymal stem cells (hMSCs) are responsive not only to biochemical but also to physical cues, such as substrate topography and stiffness. To simulate the dynamic structures of extracellular environments of the marrow in vivo, we designed a novel surrogate substrate for marrow derived hMSCs based on physically cross-linked hydrogels whose elasticity can be adopted dynamically by chemical stimuli. Under frequent mechanical stress, hMSCs grown on our hydrogel substrates maintain the expression of STRO-1 over 20 d, irrespective of the substrate elasticity. On exposure to the corresponding induction media, these cultured hMSCs can undergo adipogenesis and osteogenesis without requiring cell transfer onto other substrates. Moreover, we demonstrated that our surrogate substrate suppresses the proliferation of hMSCs by up to 90% without any loss of multiple lineage potential by changing the substrate elasticity every 2nd days. Such “dynamic in vitro niche” can be used not only for a better understanding of the role of dynamic mechanical stresses on the fate of hMSCs but also for the synchronized differentiation of adult stem cells to a specific lineage.
Collapse
|
39
|
Fu W, Zhao B. Thermoreversible physically crosslinked hydrogels from UCST-type thermosensitive ABA linear triblock copolymers. Polym Chem 2016. [DOI: 10.1039/c6py01517d] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Moderately concentrated aqueous solutions of UCST-type thermosensitive ABA linear triblock copolymers undergo cooling-induced, reversible sol–gel transitions.
Collapse
Affiliation(s)
- Wenxin Fu
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
| | - Bin Zhao
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
| |
Collapse
|
40
|
Constantinou AP, Georgiou TK. Thermoresponsive gels based on ABC triblock copolymers: effect of the length of the PEG side group. Polym Chem 2016. [DOI: 10.1039/c5py02072g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
ABC triblock copolymers of varying compositions and lengths of the PEG side groups were fabricated and their thermoresponsive behaviour was thoroughly investigated.
Collapse
Affiliation(s)
- A. P. Constantinou
- Department of Materials
- Imperial College London
- Royal School of Mines
- London
- UK
| | - T. K. Georgiou
- Department of Materials
- Imperial College London
- Royal School of Mines
- London
- UK
| |
Collapse
|
41
|
Delplace V, Nicolas J. Degradable vinyl polymers for biomedical applications. Nat Chem 2015; 7:771-84. [PMID: 26391076 DOI: 10.1038/nchem.2343] [Citation(s) in RCA: 230] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 08/04/2015] [Indexed: 12/23/2022]
Abstract
Vinyl polymers have been the focus of intensive research over the past few decades and are attractive materials owing to their ease of synthesis and their broad diversity of architectures, compositions and functionalities. Their carbon-carbon backbones are extremely resistant to degradation, however, and this property limits their uses. Degradable polymers are an important field of research in polymer science and have been used in a wide range of applications spanning from (nano)medicine to microelectronics and environmental protection. The development of synthetic strategies to enable complete or partial degradation of vinyl polymers is, therefore, of great importance because it will offer new opportunities for the application of these materials. This Review captures the most recent and promising approaches to the design of degradable vinyl polymers and discusses the potential of these materials for biomedical applications.
Collapse
Affiliation(s)
- Vianney Delplace
- Institut Galien Paris-Sud, CNRS UMR 8612, Univ Paris-Sud, Faculté de Pharmacie, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry cedex, France
| | - Julien Nicolas
- Institut Galien Paris-Sud, CNRS UMR 8612, Univ Paris-Sud, Faculté de Pharmacie, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry cedex, France
| |
Collapse
|
42
|
Jiang L, Xu D, Sellati TJ, Dong H. Self-assembly of cationic multidomain peptide hydrogels: supramolecular nanostructure and rheological properties dictate antimicrobial activity. NANOSCALE 2015; 7:19160-9. [PMID: 26524425 PMCID: PMC4866592 DOI: 10.1039/c5nr05233e] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Hydrogels are an important class of biomaterials that have been widely utilized for a variety of biomedical/medical applications. The biological performance of hydrogels, particularly those used as wound dressing could be greatly advanced if imbued with inherent antimicrobial activity capable of staving off colonization of the wound site by opportunistic bacterial pathogens. Possessing such antimicrobial properties would also protect the hydrogel itself from being adversely affected by microbial attachment to its surface. We have previously demonstrated the broad-spectrum antimicrobial activity of supramolecular assemblies of cationic multi-domain peptides (MDPs) in solution. Here, we extend the 1-D soluble supramolecular assembly to 3-D hydrogels to investigate the effect of the supramolecular nanostructure and its rheological properties on the antimicrobial activity of self-assembled hydrogels. Among designed MDPs, the bactericidal activity of peptide hydrogels was found to follow an opposite trend to that in solution. Improved antimicrobial activity of self-assembled peptide hydrogels is dictated by the combined effect of supramolecular surface chemistry and storage modulus of the bulk materials, rather than the ability of individual peptides/peptide assemblies to penetrate bacterial cell membrane as observed in solution. The structure-property-activity relationship developed through this study will provide important guidelines for designing biocompatible peptide hydrogels with built-in antimicrobial activity for various biomedical applications.
Collapse
Affiliation(s)
- Linhai Jiang
- Department of Chemistry & Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA.
| | | | | | | |
Collapse
|
43
|
Monzel C, Veschgini M, Madsen J, Lewis AL, Armes SP, Tanaka M. Fine Adjustment of Interfacial Potential between pH-Responsive Hydrogels and Cell-Sized Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8689-8696. [PMID: 26190346 DOI: 10.1021/acs.langmuir.5b01896] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We quantitatively determined interfacial potentials between cell-sized particles and stimulus-responsive hydrogels using a microinterferometer. The hydrogel is based on physically interconnected ABA triblock copolymer micelles comprising an inner biocompatible PMPC block and two outer pH-responsive PDPA blocks. The out-of-plane temporal fluctuation in the position of the cell-sized particles was calculated from changes in the interference pattern measured by Reflection Interference Contrast Microscopy (RICM), thus yielding the particle-substrate interaction potential V (Δh). Measurements in pH buffers ranging from 7.0 to 7.8 resulted in a systematic reduction in height of the potential minima ⟨Δh⟩ and a concomitant increase in the potential curvature V″ (Δh). The experimental data were analyzed by applying the modified Ross and Pincus model for polyelectrolytes, while accounting for gravitation, lubrication and van der Waals interactions. Elastic moduli calculated from V″ (Δh) were in good agreement with those measured by Atomic Force Microscopy. The ability to fine-tune both the gel elasticity and the interfacial potential at around physiological pH makes such triblock copolymer hydrogels a promising biocompatible substrate for dynamic switching of cell-material interactions.
Collapse
Affiliation(s)
- Cornelia Monzel
- †Physical Chemistry of Biosystems, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany
| | - Mariam Veschgini
- †Physical Chemistry of Biosystems, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany
| | - Jeppe Madsen
- ‡Department of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
| | - Andrew L Lewis
- §Biocompatibles UK, Ltd., Chapman House, Farnham Business Park, Weydon Lane, Farnham, Surrey GU9 8 QL, United Kingdom
| | - Steven P Armes
- ‡Department of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
| | - Motomu Tanaka
- †Physical Chemistry of Biosystems, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany
- ∥Institute for Integrated Cell-Material Sciences (WPI iCeMS), Kyoto University, 606-8501, Kyoto, Japan
| |
Collapse
|
44
|
Warren NJ, Rosselgong J, Madsen J, Armes SP. Disulfide-Functionalized Diblock Copolymer Worm Gels. Biomacromolecules 2015; 16:2514-21. [DOI: 10.1021/acs.biomac.5b00767] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicholas J. Warren
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, United Kingdom
| | - Julien Rosselgong
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, United Kingdom
| | - Jeppe Madsen
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, United Kingdom
| | - Steven P. Armes
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, United Kingdom
| |
Collapse
|
45
|
Tian X, Nyberg S, S Sharp P, Madsen J, Daneshpour N, Armes SP, Berwick J, Azzouz M, Shaw P, Abbott NJ, Battaglia G. LRP-1-mediated intracellular antibody delivery to the Central Nervous System. Sci Rep 2015; 5:11990. [PMID: 26189707 PMCID: PMC4507173 DOI: 10.1038/srep11990] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 03/26/2015] [Indexed: 12/22/2022] Open
Abstract
The blood-brain barrier (BBB) is by far the most important target in developing new approaches to improve delivery of drugs and diagnostic tools into the Central Nervous System (CNS). Here we report the engineering of pH- sensitive polymersomes (synthetic vesicles formed by amphiphilic copolymers) that exploit endogenous transport mechanisms to traverse the BBB, enabling delivery of large macromolecules into both the CNS parenchyma and CNS cells. We achieve this by targeting the Low Density Lipoprotein Receptor-Related Protein 1 (LRP-1) receptor. We show that LRP-1 is associated with endothelial transcytosis that does not involve acidification of cargo in membrane-trafficking organelles. By contrast, this receptor is also associated with traditional endocytosis in CNS cells, thus aiding the delivery of relevant cargo within their cytosol. We prove this using IgG as a model cargo, thus demonstrating that the combination of appropriate targeting combined with pH-sensitive polymersomes enables the efficient delivery of macromolecules into CNS cells.
Collapse
Affiliation(s)
- Xiaohe Tian
- 1] Department of Chemistry, University College London, London, UK [2] The MRC/UCL Centre for Medical Molecular Virology, University College London, London, UK
| | - Sophie Nyberg
- 1] Department of Chemistry, University College London, London, UK [2] The MRC/UCL Centre for Medical Molecular Virology, University College London, London, UK
| | - Paul S Sharp
- 1] Department of Biomedical Science [2] Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, UK [3] Department of Neuroscience, University of Sheffield, UK [4] Department of Psychology, University of Sheffield, UK
| | - Jeppe Madsen
- 1] Department of Biomedical Science [2] Department of Chemistry, University of Sheffield, UK
| | - Nooshin Daneshpour
- 1] Department of Biomedical Science [2] Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, UK [3] Department of Neuroscience, University of Sheffield, UK
| | | | - Jason Berwick
- Department of Psychology, University of Sheffield, UK
| | - Mimoun Azzouz
- 1] Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, UK [2] Department of Neuroscience, University of Sheffield, UK
| | - Pamela Shaw
- 1] Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, UK [2] Department of Neuroscience, University of Sheffield, UK
| | - N Joan Abbott
- Institute of Pharmaceutical Science, King's College London, UK
| | - Giuseppe Battaglia
- 1] Department of Chemistry, University College London, London, UK [2] The MRC/UCL Centre for Medical Molecular Virology, University College London, London, UK
| |
Collapse
|
46
|
Raffa P, Wever DAZ, Picchioni F, Broekhuis AA. Polymeric Surfactants: Synthesis, Properties, and Links to Applications. Chem Rev 2015; 115:8504-63. [PMID: 26182291 DOI: 10.1021/cr500129h] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Patrizio Raffa
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Dutch Polymer Institute DPI , P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Diego Armando Zakarias Wever
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Dutch Polymer Institute DPI , P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Francesco Picchioni
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Antonius A Broekhuis
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| |
Collapse
|
47
|
Zhu C, Bettinger CJ. Photoreconfigurable Physically Cross-Linked Triblock Copolymer Hydrogels: Photodisintegration Kinetics and Structure–Property Relationships. Macromolecules 2015. [DOI: 10.1021/ma502372f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Christopher J. Bettinger
- McGowan Institute
of Regenerative Medicine, 450 Technology
Drive, Suite 300, Pittsburgh, Pennsylvania 15219, United States
| |
Collapse
|
48
|
The solubility of sebacic acid in subcritical water using the response surface methodology. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2015. [DOI: 10.1007/s40090-014-0028-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
49
|
Wang Y, Zhao Q, Luo Y, Xu Z, Zhang H, Yang S, Wei Y, Jia X. A high stiffness bio-inspired hydrogel from the combination of a poly(amido amine) dendrimer with DOPA. Chem Commun (Camb) 2015; 51:16786-9. [DOI: 10.1039/c5cc05643h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A robust bio-inspired hydrogel is constructed from two components containing G4.0 PAMAM and DOPA.
Collapse
Affiliation(s)
- Yao Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - Qiang Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - Yiyang Luo
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - Zejun Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - He Zhang
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education
- College of Stomatology, Chongqing Medical University
- Chongqing 400016
- P. R. China
| | - Sheng Yang
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education
- College of Stomatology, Chongqing Medical University
- Chongqing 400016
- P. R. China
| | - Yen Wei
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Xinru Jia
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- P. R. China
| |
Collapse
|
50
|
Ruiz-Pérez L, Madsen J, Themistou E, Gaitzsch J, Messager L, Armes SP, Battaglia G. Nanoscale detection of metal-labeled copolymers in patchy polymersomes. Polym Chem 2015. [DOI: 10.1039/c4py01508h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis and facile imaging of metal-labeled polymersome-forming block copolymersviaATRP and RAFT polymerization. The resulting polymersomes can be visualized using TEM, which allows resolution of single polymer chains.
Collapse
Affiliation(s)
- Lorena Ruiz-Pérez
- Department of Chemistry
- University College London
- London
- UK
- The MRC/UCL Centre for Medical Molecular Virology
| | - Jeppe Madsen
- Department of Chemistry
- The University of Sheffield
- Sheffield
- UK
| | | | - Jens Gaitzsch
- Department of Chemistry
- University College London
- London
- UK
- The MRC/UCL Centre for Medical Molecular Virology
| | - Léa Messager
- Department of Chemistry
- University College London
- London
- UK
- The MRC/UCL Centre for Medical Molecular Virology
| | - Steven P. Armes
- Department of Chemistry
- The University of Sheffield
- Sheffield
- UK
| | - Giuseppe Battaglia
- Department of Chemistry
- University College London
- London
- UK
- The MRC/UCL Centre for Medical Molecular Virology
| |
Collapse
|