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Fan D, Xie R, Liu X, Li H, Luo Z, Li Y, Chen F, Zeng W. A peptide-based pH-sensitive antibacterial hydrogel for healing drug-resistant biofilm-infected diabetic wounds. J Mater Chem B 2024; 12:5525-5534. [PMID: 38746970 DOI: 10.1039/d4tb00594e] [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: 06/06/2024]
Abstract
Diabetic foot ulcers are a significant complication affecting roughly 15% of diabetic patients. These chronic wounds can be incredibly burdensome, leading to high treatment costs, potential amputations, and additional health complications. Microbiological studies reveal that bacterial infections are the primary culprit behind delayed wound healing. To solve the problem of infection at the wound site, the most fundamental thing is to kill the pathogenic bacteria. Herein, a neoteric strategy to construct novel antibacterial hydrogel COA-T3 that combined photosensitizers (PSs) and antimicrobial peptides (AMPs) via covalent coupling was proposed. Hydrogel COA-T3 composed of quaternized chitosan (QCS) and oxidized dextran (OD) was constructed for co-delivery of the photosensitizer TPI-PN and the antimicrobial peptide HHC10. In vitro and in vivo experiments demonstrated remarkable effectiveness of COA-T3 against drug-resistant bacteria. Furthermore, the hydrogel significantly promoted healing of diabetic infected wounds. This enhanced antibacterial activity is attributed to the pH-sensitive release of both PSs and AMPs within the hydrogel. Additionally, COA-T3 exhibits excellent biocompatibility, making it a promising candidate for wound dressing materials. These findings indicated that the COA-T3 hydrogel is a promising wound dressing material for promoting the healing of diabetic foot ulcers by providing an environment conducive to improved wound healing in diabetic patients.
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Affiliation(s)
- Duoyang Fan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, P. R. China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, 410013, P. R. China
| | - Ruyan Xie
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, P. R. China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, 410013, P. R. China
| | - Xiaohui Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, P. R. China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, 410013, P. R. China
| | - Haohan Li
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, P. R. China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, 410013, P. R. China
| | - Ziheng Luo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, P. R. China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, 410013, P. R. China
| | - Yanbing Li
- Xiangya Hospital of Central South University, Changsha, P. R. China
| | - Fei Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, P. R. China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, 410013, P. R. China
| | - Wenbin Zeng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, P. R. China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, 410013, P. R. China
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Mo C, Zhang W, Zhu K, Du Y, Huang W, Wu Y, Song J. Advances in Injectable Hydrogels Based on Diverse Gelation Methods for Biomedical Imaging. SMALL METHODS 2024:e2400076. [PMID: 38470225 DOI: 10.1002/smtd.202400076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/01/2024] [Indexed: 03/13/2024]
Abstract
The injectable hydrogels can deliver the loads directly to the predetermined sites and form reservoirs to increase the enrichment and retention of the loads in the target areas. The preparation and injection of injectable hydrogels involve the sol-gel transformation of hydrogels, which is affected by factors such as temperature, ions, enzymes, light, mechanics (self-healing property), and pH. However, tracing the injection, degradation, and drug release from hydrogels based on different ways of gelation is a major concern. To solve this problem, contrast agents are introduced into injectable hydrogels, enabling the hydrogels to be imaged under techniques such as fluorescence imaging, photoacoustic imaging, magnetic resonance imaging, and radionuclide imaging. This review details methods for causing the gelation of imageable hydrogels; discusses the application of injectable hydrogels containing contrast agents in various imaging techniques, and finally explores the potential and challenges of imageable hydrogels based on different modes of gelation.
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Affiliation(s)
- Chunxiang Mo
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 10010, China
| | - Weiyao Zhang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 10010, China
| | - Kang Zhu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 10010, China
| | - Yang Du
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, Institute of Automation, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wei Huang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, 250117, China
| | - Ying Wu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 10010, China
| | - Jibin Song
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 10010, China
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3
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Heremans J, Maximilian Awad R, Bridoux J, Ertveldt T, Caveliers V, Madder A, Hoogenboom R, Devoogdt N, Ballet S, Hernot S, Breckpot K, Martin C. Sustained release of a human PD-L1 single-domain antibody using peptide-based hydrogels. Eur J Pharm Biopharm 2024; 196:114183. [PMID: 38246566 DOI: 10.1016/j.ejpb.2024.114183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 01/14/2024] [Indexed: 01/23/2024]
Abstract
Monoclonal antibodies (mAbs) targeting the immune checkpoint axis, which contains the programmed cell death protein-1 (PD-1) and its ligand PD-L1, revolutionized the field of oncology. Unfortunately, the large size of mAbs and the presence of an Fc fraction limit their tumor penetrative capacities and support off-target effects, potentially resulting in unresponsive patients and immune-related adverse events (irAEs) respectively. Single-domain antibodies (sdAbs) are ten times smaller than conventional mAbs and represent an emerging antibody subclass that has been proposed as next generation immune checkpoint inhibitor (ICI) therapeutics. They demonstrate favorable characteristics, such as an excellent stability, high antigen-binding affinity and an enhanced tumor penetration. Because sdAbs have a short half-life, methods to prolong their presence in the circulation and at the target site might be necessary in some cases to unfold their full therapeutic potential. In this study, we investigated a peptide-based hydrogel as an injectable biomaterial depot formulation for the sustained release of the human PD-L1 sdAb K2. We showed that a hydrogel composed of the amphipathic hexapeptide hydrogelator H-FQFQFK-NH2 prolonged the in vivo release of K2 after subcutaneous (s.c.) injection, up to at least 72 h, as monitored by SPECT/CT and fluorescence imaging. Additionally, after encapsulation in the hydrogel and s.c. administration, a significantly extended systemic presence and tumor uptake of K2 was observed in mice bearing a melanoma tumor expressing human PD-L1. Altogether, this study describes how peptide hydrogels can be exploited to provide the sustained release of sdAbs, thereby potentially enhancing its clinical and therapeutic effects.
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Affiliation(s)
- Julie Heremans
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | - Robin Maximilian Awad
- Laboratory for Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Jessica Bridoux
- In Vivo Cellular and Molecular Imaging Laboratory, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Thomas Ertveldt
- Laboratory for Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Vicky Caveliers
- In Vivo Cellular and Molecular Imaging Laboratory, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Annemieke Madder
- Organic and Biomimetic Chemistry Research Group, Ghent University, 9000 Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium
| | - Nick Devoogdt
- In Vivo Cellular and Molecular Imaging Laboratory, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Steven Ballet
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | - Sophie Hernot
- In Vivo Cellular and Molecular Imaging Laboratory, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Karine Breckpot
- Laboratory for Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Charlotte Martin
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
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Bas Y, Sanyal R, Sanyal A. Hyaluronic-acid based redox-responsive hydrogels using the Diels-Alder reaction for on-demand release of biomacromolecules. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2023. [DOI: 10.1080/10601325.2023.2190357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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5
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Leon-Chaviano S, Kiseleva M, Legros P, Collin S, Lescot T, Henoumont C, Gossuin Y, Laurent S, Mayrand D, Fradette J, Bégin-Drolet A, Ruel J, Fortin MA. A Nanoparticle Ink Allowing the High Precision Visualization of Tissue Engineered Scaffolds by MRI. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2206644. [PMID: 36965146 DOI: 10.1002/smll.202206644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/29/2022] [Indexed: 06/18/2023]
Abstract
Hydrogels are widely used as cell scaffolds in several biomedical applications. Once implanted in vivo, cell scaffolds must often be visualized, and monitored overtime. However, cell scaffolds appear poorly contrasted in most biomedical imaging modalities such as magnetic resonance imaging (MRI). MRI is the imaging technique of choice for high-resolution visualization of low-density, water-rich tissues. Attempts to enhance hydrogel contrast in MRI are performed with "negative" contrast agents that produce several image artifacts impeding the delineation of the implant's contours. In this study, a magnetic ink based on ultra-small iron oxide nanoparticles (USPIONs; <5 nm diameter cores) is developed and integrated into biocompatible alginate hydrogel used in cell scaffolding applications. Relaxometric properties of the magnetic hydrogel are measured, as well as biocompatibility and MR-visibility (T1 -weighted mode; in vitro and in vivo). A 2-week MR follow-up study is performed in the mouse model, demonstrating no image artifacts, and the retention of "positive" contrast overtime, which allows very precise delineation of tissue grafts with MRI. Finally, a 3D-contouring procedure developed to facilitate graft delineation and geometrical conformity assessment is applied on an inverted template alginate pore network. This proof-of-concept establishes the possibility to reveal precisely engineered hydrogel structures using this USPIONs ink high-visibility approach.
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Affiliation(s)
- Samila Leon-Chaviano
- Centre de Recherche du Centre Hospitalier Universitaire de Québec - Université Laval (CR CHUQ), Axe Médecine Régénératrice, Quebec City, Québec, G1L 3L5, Canada
- Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec City, Québec, G1V 0A6, Canada
| | - Mariia Kiseleva
- Centre de Recherche du Centre Hospitalier Universitaire de Québec - Université Laval (CR CHUQ), Axe Médecine Régénératrice, Quebec City, Québec, G1L 3L5, Canada
- Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec City, Québec, G1V 0A6, Canada
| | - Philippe Legros
- Centre de Recherche du Centre Hospitalier Universitaire de Québec - Université Laval (CR CHUQ), Axe Médecine Régénératrice, Quebec City, Québec, G1L 3L5, Canada
- Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec City, Québec, G1V 0A6, Canada
| | - Simon Collin
- Département de Génie Mécanique, Université Laval, Quebec City, Québec, G1V 0A6, Canada
| | - Théophraste Lescot
- Centre de Recherche du Centre Hospitalier Universitaire de Québec - Université Laval (CR CHUQ), Axe Médecine Régénératrice, Quebec City, Québec, G1L 3L5, Canada
- Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec City, Québec, G1V 0A6, Canada
| | - Céline Henoumont
- Département de Chimie Générale, Organique et Biomédicale, Université de Mons, Mons, 7000, Belgium
| | - Yves Gossuin
- Service de Physique Biomédicale, Université de Mons, Mons, 7000, Belgium
| | - Sophie Laurent
- Département de Chimie Générale, Organique et Biomédicale, Université de Mons, Mons, 7000, Belgium
| | - Dominique Mayrand
- Centre de Recherche du Centre Hospitalier Universitaire de Québec - Université Laval (CR CHUQ), Axe Médecine Régénératrice, Quebec City, Québec, G1L 3L5, Canada
- Département de Chirurgie, Faculté de Médecine, Université Laval, Quebec City, Québec, G1V 0A6, Canada
| | - Julie Fradette
- Centre de Recherche du Centre Hospitalier Universitaire de Québec - Université Laval (CR CHUQ), Axe Médecine Régénératrice, Quebec City, Québec, G1L 3L5, Canada
- Département de Chirurgie, Faculté de Médecine, Université Laval, Quebec City, Québec, G1V 0A6, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, 1401, 18e rue, Quebec City, Québec, G1J 1Z4, Canada
| | - André Bégin-Drolet
- Département de Génie Mécanique, Université Laval, Quebec City, Québec, G1V 0A6, Canada
| | - Jean Ruel
- Département de Génie Mécanique, Université Laval, Quebec City, Québec, G1V 0A6, Canada
| | - Marc-André Fortin
- Centre de Recherche du Centre Hospitalier Universitaire de Québec - Université Laval (CR CHUQ), Axe Médecine Régénératrice, Quebec City, Québec, G1L 3L5, Canada
- Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec City, Québec, G1V 0A6, Canada
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6
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Dong M, Jiao D, Zheng Q, Wu ZL. Recent progress in fabrications and applications of functional hydrogel films. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Min Dong
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Dejin Jiao
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Qiang Zheng
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Zi Liang Wu
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
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7
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Zhou W, Hu Z, Wei J, Dai H, Chen Y, Liu S, Duan Z, Xie F, Zhang W, Guo R. Quantum dots-hydrogel composites for biomedical applications. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.09.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Sneha KR, Sailaja GS. Intrinsically radiopaque biomaterial assortments: a short review on the physical principles, X-ray imageability, and state-of-the-art developments. J Mater Chem B 2021; 9:8569-8593. [PMID: 34585717 DOI: 10.1039/d1tb01513c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
X-ray attenuation ability, otherwise known as radiopacity of a material, could be indisputably tagged as the central and decisive parameter that produces contrast in an X-ray image. Radiopaque biomaterials are vital in the healthcare sector that helps clinicians to track them unambiguously during pre and post interventional radiological procedures. Medical imaging is one of the most powerful resources in the diagnostic sector that aids improved treatment outcomes for patients. Intrinsically radiopaque biomaterials enable themselves for visual targeting/positioning as well as to monitor their fate and further provide the radiologists with critical insights about the surgical site. Moreover, the emergence of advanced real-time imaging modalities is a boon to the contemporary healthcare systems that allow to perform minimally invasive surgical procedures and thereby reduce the healthcare costs and minimize patient trauma. X-ray based imaging is one such technologically upgraded diagnostic tool with many variants like digital X-ray, computed tomography, digital subtraction angiography, and fluoroscopy. In light of these facts, this review is aimed to briefly consolidate the physical principles of X-ray attenuation by a radiopaque material, measurement of radiopacity, classification of radiopaque biomaterials, and their recent advanced applications.
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Affiliation(s)
- K R Sneha
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kochi - 682022, India.
| | - G S Sailaja
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kochi - 682022, India. .,Interuniversity Centre for Nanomaterials and Devices, CUSAT, Kochi - 682022, India.,Centre for Advanced Materials, CUSAT, Kochi - 682022, India
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9
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Dong YC, Bouché M, Uman S, Burdick JA, Cormode DP. Detecting and Monitoring Hydrogels with Medical Imaging. ACS Biomater Sci Eng 2021; 7:4027-4047. [PMID: 33979137 PMCID: PMC8440385 DOI: 10.1021/acsbiomaterials.0c01547] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Hydrogels, water-swollen polymer networks, are being applied to numerous biomedical applications, such as drug delivery and tissue engineering, due to their potential tunable rheologic properties, injectability into tissues, and encapsulation and release of therapeutics. Despite their promise, it is challenging to assess their properties in vivo and crucial information such as hydrogel retention at the site of administration and in situ degradation kinetics are often lacking. To address this, technologies to evaluate and track hydrogels in vivo with various imaging techniques have been developed in recent years, including hydrogels functionalized with contrast generating material that can be imaged with methods such as X-ray computed tomography (CT), magnetic resonance imaging (MRI), optical imaging, and nuclear imaging systems. In this review, we will discuss emerging approaches to label hydrogels for imaging, review the advantages and limitations of these imaging techniques, and highlight examples where such techniques have been implemented in biomedical applications.
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Affiliation(s)
- Yuxi C Dong
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Mathilde Bouché
- Université de Lorraine, CNRS, L2CM UMR 7053, F-54000 Nancy, France
| | - Selen Uman
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - David P Cormode
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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10
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Wu K, Chen X, Gu S, Cui S, Yang X, Yu L, Ding J. Decisive Influence of Hydrophobic Side Chains of Polyesters on Thermoinduced Gelation of Triblock Copolymer Aqueous Solutions. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00959] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kaiting Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Xiaobin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Siyi Gu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Shuquan Cui
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Xiaowei Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
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11
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Shi J, Yu L, Ding J. PEG-based thermosensitive and biodegradable hydrogels. Acta Biomater 2021; 128:42-59. [PMID: 33857694 DOI: 10.1016/j.actbio.2021.04.009] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/09/2021] [Accepted: 04/01/2021] [Indexed: 02/07/2023]
Abstract
Injectable thermosensitive hydrogels are free-flowing polymer solutions at low or room temperature, making them easy to encapsulate the therapeutic payload or cells via simply mixing. Upon injection into the body, in situ forming hydrogels triggered by body temperature can act as drug-releasing reservoirs or cell-growing scaffolds. Finally, the hydrogels are eliminated from the administration sites after they accomplish their missions as depots or scaffolds. This review outlines the recent progress of poly(ethylene glycol) (PEG)-based biodegradable thermosensitive hydrogels, especially those composed of PEG-polyester copolymers, PEG-polypeptide copolymers and poly(organophosphazene)s. The material design, performance regulation, thermogelation and degradation mechanisms, and corresponding applications in the biomedical field are summarized and discussed. A perspective on the future thermosensitive hydrogels is also highlighted. STATEMENT OF SIGNIFICANCE: Thermosensitive hydrogels undergoing reversible sol-to-gel phase transitions in response to temperature variations are a class of promising biomaterials that can serve as minimally invasive injectable systems for various biomedical applications. Hydrophilic PEG is a main component in the design and fabrication of thermoresponsive hydrogels due to its excellent biocompatibility. By incorporating hydrophobic segments, such as polyesters and polypeptides, into PEG-based systems, biodegradable and thermosensitive hydrogels with adjustable properties in vitro and in vivo have been developed and have recently become a research hotspot of biomaterials. The summary and discussion on molecular design, performance regulation, thermogelation and degradation mechanisms, and biomedical applications of PEG-based thermosensitive hydrogels may offer a demonstration of blueprint for designing new thermogelling systems and expanding their application scope.
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12
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Wu X, Wang X, Chen X, Yang X, Ma Q, Xu G, Yu L, Ding J. Injectable and thermosensitive hydrogels mediating a universal macromolecular contrast agent with radiopacity for noninvasive imaging of deep tissues. Bioact Mater 2021; 6:4717-4728. [PMID: 34136722 PMCID: PMC8165329 DOI: 10.1016/j.bioactmat.2021.05.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/26/2021] [Accepted: 05/08/2021] [Indexed: 02/06/2023] Open
Abstract
It is very challenging to visualize implantable medical devices made of biodegradable polymers in deep tissues. Herein, we designed a novel macromolecular contrast agent with ultrahigh radiopacity (iodinate content > 50%) via polymerizing an iodinated trimethylene carbonate monomer into the two ends of poly(ethylene glycol) (PEG). A set of thermosensitive and biodegradable polyester-PEG-polyester triblock copolymers with varied polyester compositions synthesized by us, which were soluble in water at room temperature and could spontaneously form hydrogels at body temperature, were selected as the demonstration materials. The addition of macromolecular contrast agent did not obviously compromise the injectability and thermogelation properties of polymeric hydrogels, but conferred them with excellent X-ray opacity, enabling visualization of the hydrogels at clinically relevant depths through X-ray fluoroscopy or Micro-CT. In a mouse model, the 3D morphology of the radiopaque hydrogels after injection into different target sites was visible using Micro-CT imaging, and their injection volume could be accurately obtained. Furthermore, the subcutaneous degradation process of a radiopaque hydrogel could be non-invasively monitored in a real-time and quantitative manner. In particular, the corrected degradation curve based on Micro-CT imaging well matched with the degradation profile of virgin polymer hydrogel determined by the gravimetric method. These findings indicate that the macromolecular contrast agent has good universality for the construction of various radiopaque polymer hydrogels, and can nondestructively trace and quantify their degradation in vivo. Meanwhile, the present methodology developed by us affords a platform technology for deep tissue imaging of polymeric materials.
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Affiliation(s)
- Xiaohui Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200438, China
| | - Xin Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200438, China
| | - Xiaobin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200438, China
| | - Xiaowei Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200438, China
| | - Qian Ma
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200438, China
| | - Guohua Xu
- Department of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, 200003, China
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200438, China.,Zhuhai Fudan Innovation Institute, Zhuhai, Guangdong, 519000, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200438, China.,Zhuhai Fudan Innovation Institute, Zhuhai, Guangdong, 519000, China
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13
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Berry DB, Englund EK, Chen S, Frank LR, Ward SR. Medical imaging of tissue engineering and regenerative medicine constructs. Biomater Sci 2021; 9:301-314. [PMID: 32776044 PMCID: PMC8262082 DOI: 10.1039/d0bm00705f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Advancement of tissue engineering and regenerative medicine (TERM) strategies to replicate tissue structure and function has led to the need for noninvasive assessment of key outcome measures of a construct's state, biocompatibility, and function. Histology based approaches are traditionally used in pre-clinical animal experiments, but are not always feasible or practical if a TERM construct is going to be tested for human use. In order to transition these therapies from benchtop to bedside, rigorously validated imaging techniques must be utilized that are sensitive to key outcome measures that fulfill the FDA standards for TERM construct evaluation. This review discusses key outcome measures for TERM constructs and various clinical- and research-based imaging techniques that can be used to assess them. Potential applications and limitations of these techniques are discussed, as well as resources for the processing, analysis, and interpretation of biomedical images.
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Affiliation(s)
- David B Berry
- Departments of NanoEngineering, University of California, San Diego, USA.
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14
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Tsintou M, Dalamagkas K, Moore TL, Rathi Y, Kubicki M, Rosene DL, Makris N. The use of hydrogel-delivered extracellular vesicles in recovery of motor function in stroke: a testable experimental hypothesis for clinical translation including behavioral and neuroimaging assessment approaches. Neural Regen Res 2021; 16:605-613. [PMID: 33063708 PMCID: PMC8067932 DOI: 10.4103/1673-5374.295269] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Neural tissue engineering, nanotechnology and neuroregeneration are diverse biomedical disciplines that have been working together in recent decades to solve the complex problems linked to central nervous system (CNS) repair. It is known that the CNS demonstrates a very limited regenerative capacity because of a microenvironment that impedes effective regenerative processes, making development of CNS therapeutics challenging. Given the high prevalence of CNS conditions such as stroke that damage the brain and place a severe burden on afflicted individuals and on society, it is of utmost significance to explore the optimum methodologies for finding treatments that could be applied to humans for restoration of function to pre-injury levels. Extracellular vesicles (EVs), also known as exosomes, when derived from mesenchymal stem cells, are one of the most promising approaches that have been attempted thus far, as EVs deliver factors that stimulate recovery by acting at the nanoscale level on intercellular communication while avoiding the risks linked to stem cell transplantation. At the same time, advances in tissue engineering and regenerative medicine have offered the potential of using hydrogels as bio-scaffolds in order to provide the stroma required for neural repair to occur, as well as the release of biomolecules facilitating or inducing the reparative processes. This review introduces a novel experimental hypothesis regarding the benefits that could be offered if EVs were to be combined with biocompatible injectable hydrogels. The rationale behind this hypothesis is presented, analyzing how a hydrogel might prolong the retention of EVs and maximize the localized benefit to the brain. This sustained delivery of EVs would be coupled with essential guidance cues and structural support from the hydrogel until neural tissue remodeling and regeneration occur. Finally, the importance of including non-human primate models in the clinical translation pipeline, as well as the added benefit of multi-modal neuroimaging analysis to establish non-invasive, in vivo, quantifiable imaging-based biomarkers for CNS repair are discussed, aiming for more effective and safe clinical translation of such regenerative therapies to humans.
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Affiliation(s)
- Magdalini Tsintou
- Department of Psychiatry and Neurology Services, Center for Neural Systems Investigations, Center for Morphometric Analysis, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital; Department of Psychiatry, Psychiatry Neuroimaging Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; University College of London Division of Surgery & Interventional Science, Center for Nanotechnology & Regenerative Medicine, University College London, London, UK
| | - Kyriakos Dalamagkas
- University College of London Division of Surgery & Interventional Science, Center for Nanotechnology & Regenerative Medicine, University College London, London, UK; Department of Physical Medicine and Rehabilitation, The University of Texas Health Science Center at Houston; The Institute for Rehabilitation and Research Memorial Hermann Research Center, The Institute for Rehabilitation and Research Memorial Hermann Hospital, Houston, TX, USA
| | - Tara L Moore
- Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, USA
| | - Yogesh Rathi
- Department of Psychiatry and Neurology Services, Center for Neural Systems Investigations, Center for Morphometric Analysis, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital; Department of Psychiatry, Psychiatry Neuroimaging Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Marek Kubicki
- Department of Psychiatry and Neurology Services, Center for Neural Systems Investigations, Center for Morphometric Analysis, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital; Department of Psychiatry, Psychiatry Neuroimaging Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Douglas L Rosene
- Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, USA
| | - Nikos Makris
- Department of Psychiatry and Neurology Services, Center for Neural Systems Investigations, Center for Morphometric Analysis, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital; Department of Psychiatry, Psychiatry Neuroimaging Laboratory, Brigham and Women's Hospital, Harvard Medical School; Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, USA
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15
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Oh M, Yoon Y, Lee TS. Synthesis of poly( N-isopropylacrylamide) polymer crosslinked with an AIE-active azonaphthol for thermoreversible fluorescence. RSC Adv 2020; 10:39277-39283. [PMID: 35518410 PMCID: PMC9057382 DOI: 10.1039/d0ra08257k] [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: 09/27/2020] [Accepted: 10/20/2020] [Indexed: 01/12/2023] Open
Abstract
A fluorescent polymer was synthesized using N-isopropylacrylamide (NIPAM) crosslinked with a divinylazonaphthol monomer via radical emulsion polymerization. Because the crosslinked polymer contained an aggregation-induced emissive (AIE) azonaphthol-based crosslinker, a thermoreversible sol-gel transformation and gelation-induced reversible fluorescence alteration were successfully attained in an aqueous medium. Like typical PNIPAM, the size and transmittance of the polymer dramatically decreased near the lower critical solution temperature (LCST, 36 °C). Such gelation facilitated aggregation of the polymer chains, resulting in the close contact between azonaphthol groups producing fluorescence. The crosslinked polymer exhibited changes in dual properties: one is related to PNIPAM structural alteration, which corresponds to conventional swelling/shrinkage behavior; and the other is involved in the reversible fluorescence change in response to the swelling/shrinkage. Because the major backbone of the polymer was composed of NIPAM with an LCST at 36 °C, the resultant polymer is expected to have potential applications in biologically related fields.
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Affiliation(s)
- Mintaek Oh
- Organic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University Daejeon 34134 Korea
| | - Yeoju Yoon
- Organic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University Daejeon 34134 Korea
| | - Taek Seung Lee
- Organic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University Daejeon 34134 Korea
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16
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Schmitz TC, Salzer E, Crispim JF, Fabra GT, LeVisage C, Pandit A, Tryfonidou M, Maitre CL, Ito K. Characterization of biomaterials intended for use in the nucleus pulposus of degenerated intervertebral discs. Acta Biomater 2020; 114:1-15. [PMID: 32771592 DOI: 10.1016/j.actbio.2020.08.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 07/06/2020] [Accepted: 08/03/2020] [Indexed: 12/19/2022]
Abstract
Biomaterials for regeneration of the intervertebral disc must meet complex requirements conforming to biological, mechanical and clinical demands. Currently no consensus on their characterization exists. It is crucial to identify parameters and their method of characterization for accurate assessment of their potential efficacy, keeping in mind the translation towards clinical application. This review systematically analyses the characterization techniques of biomaterial systems that have been used for nucleus pulposus (NP) restoration and regeneration. Substantial differences in the approach towards assessment became evident, hindering comparisons between different materials with respect to their suitability for NP restoration and regeneration. We have analysed the current approaches and identified parameters necessary for adequate biomaterial characterization, with the clinical goal of functional restoration and biological regeneration of the NP in mind. Further, we provide guidelines and goals for their measurement. STATEMENT OF SIGNIFICANCE: Biomaterials intended for restoration of regeneration of the nucleus pulposus within the intervertebral disc must meet biological, biomechanical and clinical demands. Many materials have been investigated, but a lack of consensus on which parameters to evaluate leads to difficulties in comparing materials as well as mostly partial characterization of the materials in question. A gap between current methodology and clinically relevant and meaningful characterization is prevalent. In this article, we identify necessary methods and their implementation for complete biomaterial characterization in the context of clinical applicability. This will allow for a more unified approach to NP-biomaterials research within the field as a whole and enable comparative analysis of novel materials yet to be developed.
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Affiliation(s)
- Tara C Schmitz
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands.
| | - Elias Salzer
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands.
| | - João F Crispim
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands.
| | - Georgina Targa Fabra
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, 7WQJ+8F Galway, Ireland.
| | - Catherine LeVisage
- Université de Nantes, INSERM UMR 1229, Regenerative Medicine and Skeleton, RMeS School of Dental Surgery, University of Nantes, 1 Place Ricordeau, 44300 Nantes, France.
| | - Abhay Pandit
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, 7WQJ+8F Galway, Ireland.
| | - Marianna Tryfonidou
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, Netherlands.
| | - Christine Le Maitre
- Biomolecular Sciences Research Centre Sheffield Hallam University, City Campus, Howard Street, S1 1WB Sheffield, United Kingdom.
| | - Keita Ito
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands.
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17
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Cui L, Vivona S, Smith BR, Kothapalli SR, Liu J, Ma X, Chen Z, Taylor M, Kierstead PH, Fréchet JM, Gambhir SS, Rao J. Reduction Triggered In Situ Polymerization in Living Mice. J Am Chem Soc 2020; 142:15575-15584. [PMID: 32804495 PMCID: PMC8171073 DOI: 10.1021/jacs.0c07594] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
"Smart" biomaterials that are responsive to physiological or biochemical stimuli have found many biomedical applications for tissue engineering, therapeutics, and molecular imaging. In this work, we describe in situ polymerization of activatable biorthogonal small molecules in response to a reducing environment change in vivo. We designed a carbohydrate linker- and cyanobenzothiazole-cysteine condensation reaction-based small molecule scaffold that can undergo rapid condensation reaction upon physiochemical changes (such as a reducing environment) to form polymers (pseudopolysaccharide). The fluorescent and photoacoustic properties of a fluorophore-tagged condensation scaffold before and after the transformation have been examined with a dual-modality optical imaging method. These results confirmed the in situ polymerization of this probe after both local and systemic administration in living mice.
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Affiliation(s)
- Lina Cui
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, USA
- Molecular Imaging Program at Stanford, Bio-X Program, Department of Radiology, School of medicine, Stanford University, Stanford, CA, USA
- Department of Chemistry, Stanford University, CA, USA
| | - Sandro Vivona
- Department of Molecular and Cellular Physiology, Stanford University, CA, USA
- Department of Structural Biology, Stanford University, Stanford, CA, USA
- Department of Photon Science, Stanford University, Stanford, CA, USA
| | - Bryan Ronain Smith
- Molecular Imaging Program at Stanford, Bio-X Program, Department of Radiology, School of medicine, Stanford University, Stanford, CA, USA
| | - Sri R. Kothapalli
- Molecular Imaging Program at Stanford, Bio-X Program, Department of Radiology, School of medicine, Stanford University, Stanford, CA, USA
| | - Jun Liu
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, USA
| | - Xiaowei Ma
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, USA
| | - Zixin Chen
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, USA
- Department of Chemistry, Stanford University, CA, USA
| | - Madelynn Taylor
- Molecular Imaging Program at Stanford, Bio-X Program, Department of Radiology, School of medicine, Stanford University, Stanford, CA, USA
| | | | | | - Sanjiv S. Gambhir
- Molecular Imaging Program at Stanford, Bio-X Program, Department of Radiology, School of medicine, Stanford University, Stanford, CA, USA
- Department of Bioengineering, Stanford University, CA, USA
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Jianghong Rao
- Molecular Imaging Program at Stanford, Bio-X Program, Department of Radiology, School of medicine, Stanford University, Stanford, CA, USA
- Department of Chemistry, Stanford University, CA, USA
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18
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Uman S, Wang LL, Thorn SL, Liu Z, Duncan JS, Sinusas AJ, Burdick JA. Imaging of Injectable Hydrogels Delivered into Myocardium with SPECT/CT. Adv Healthc Mater 2020; 9:e2000294. [PMID: 32543053 PMCID: PMC7482444 DOI: 10.1002/adhm.202000294] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/22/2020] [Indexed: 12/11/2022]
Abstract
Injectable hydrogels are being widely explored for treatment after myocardial infarction (MI) through mechanical bulking or the delivery of therapeutics. Despite this interest, there have been few approaches to image hydrogels upon injection to identify their location, volume, and pattern of delivery, features that are important to understand toward clinical translation. Using a hyaluronic acid (HA) hydrogel as an example, the aim of this study is to introduce radiopacity to hydrogels by encapsulating a clinically used contrast agent (Omnipaque Iohexol, GE Healthcare) for imaging upon placement in the myocardium. Specifically, iohexol is encapsulated into shear-thinning and self-healing hydrogels formed through the mixing of HA-hydrazide and HA-aldehyde. Upon examination of a range of iohexol concentrations, a concentration of 100 mg mL-1 iohexol is deemed optimal based on the greatest contrast, while maintaining hydrogel mechanical properties and acceptable injection forces. In an acute porcine model of MI, hybrid single-photon emission computed tomography/computed tomography (SPECT/CT) perfusion imaging is performed immediately and 3-4 days after hydrogel delivery to assess radiopacity and verify the hydrogel location within the perfusion defect. Hybrid SPECT/CT imaging demonstrates excellent radiopacity of the hydrogel within the perfusion defect immediately after intramyocardial hydrogel injection, demonstrating the feasibility of this method for short-term noninvasive hydrogel monitoring.
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Affiliation(s)
- Selen Uman
- Department of Bioengineering, University of Pennsylvania, 210 33rd Street, Philadelphia, PA, 19104, USA
| | - Leo L Wang
- Department of Bioengineering, University of Pennsylvania, 210 33rd Street, Philadelphia, PA, 19104, USA
| | - Stephanie L Thorn
- Department of Internal Medicine, Section of Cardiovascular Medicine, Yale University School of Medicine, Yale Translational Research Imaging Center, DANA-3, P.O. Box 208017, New Haven, CT, 06520-8017, USA
| | - Zhao Liu
- Department of Internal Medicine, Section of Cardiovascular Medicine, Yale University School of Medicine, Yale Translational Research Imaging Center, DANA-3, P.O. Box 208017, New Haven, CT, 06520-8017, USA
| | - James S Duncan
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, 300 Cedar Street, New Haven, CT, 06519, USA
| | - Albert J Sinusas
- Department of Internal Medicine, Section of Cardiovascular Medicine, Yale University School of Medicine, Yale Translational Research Imaging Center, DANA-3, P.O. Box 208017, New Haven, CT, 06520-8017, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, 210 33rd Street, Philadelphia, PA, 19104, USA
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19
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Li Q, Feng Z, Song H, Zhang J, Dong A, Kong D, Wang W, Huang P. 19F magnetic resonance imaging enabled real-time, non-invasive and precise localization and quantification of the degradation rate of hydrogel scaffolds in vivo. Biomater Sci 2020; 8:3301-3309. [PMID: 32356855 DOI: 10.1039/d0bm00278j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The degradation behavior of hydrogel scaffolds is closely related to the controlled release of bioactive agents and matching with the proliferative demands of newly generated tissues. However, the current methods cannot provide precise localization and track the degradation of individual hydrogel scaffolds in vivo, despite superficial or volumetric information. Here, for the first time, we presented the use of 19F magnetic resonance imaging (19F MRI) to precisely monitor the localization and quantify the degradation rate of implantable or injectable hydrogels in a real-time and noninvasive manner, with no interference of endogenous background signals and limitation of penetration depth. The total voxel and content in the region of interest (ROI) were linearly correlated to the injection amount, providing exact three-dimensional (3D) stereoscopic and two-dimensional (2D) anatomical information in the meantime. Moreover, a computational algorithm was established to present the real-time degradation rate in vivo as a function of time, which was implemented directly from the 19F MRI dataset. In addition, labelling with a zwitterionic 19F contrast agent demonstrated a facile and general applicability for multiple types of materials with no influence on their original gelation properties as well as 19F NMR properties in the hydrogel matrix. Therefore, this 19F MRI method offers a new approach to non-invasively track the degradation rate of hydrogel scaffolds in vivo in a precise localization and accurate quantification way, which will suffice the need for the evaluation of implants at deep depths in large animals or human objects.
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Affiliation(s)
- Qinghua Li
- Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
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20
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Cengiz N, Gevrek TN, Sanyal R, Sanyal A. Fabrication of Patterned Hydrogel Interfaces: Exploiting the Maleimide Group as a Dual Purpose Handle for Cross-Linking and Bioconjugation. Bioconjug Chem 2020; 31:1382-1391. [PMID: 32259431 DOI: 10.1021/acs.bioconjchem.0c00108] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Functional hydrogels that can be obtained through facile fabrication procedures and subsequently modified using straightforward reagent-free methods are indispensable materials for biomedical applications such as sensing and diagnostics. Herein a novel hydrogel platform is obtained using polymeric precursors containing the maleimide functional group as a side chain. The maleimide groups play a dual role in fabrication of functional hydrogels. They enable photochemical cross-linking of the polymers to yield bulk and patterned hydrogels. Moreover, the maleimide group can be used as a handle for efficient functionalization using the thiol-maleimide conjugation and Diels-Alder cycloaddition click reactions. Obtained hydrogels are characterized in terms of their morphology, water uptake capacity, and functionalization. Micropatterned hydrogels are obtained under UV-irradiation using a photomask to obtain reactive micropatterns, which undergo facile functionalization upon treatment with thiol-containing functional molecules such as fluorescent dyes and bioactive ligands. The maleimide group also undergoes conjugation through the Diels-Alder reaction, where the attached molecule can be released through thermal treatment via the retro Diels-Alder reaction. The antibiofouling nature of these hydrogel micropatterns enables efficient ligand-directed biomolecular immobilization, as demonstrated by attachment of streptavidin-coated quantum dots.
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Affiliation(s)
- Nergiz Cengiz
- Department of Chemistry, Bogazici University, Bebek 34342, Istanbul, Turkey
| | - Tugce Nihal Gevrek
- Department of Chemistry, Bogazici University, Bebek 34342, Istanbul, Turkey
| | - Rana Sanyal
- Department of Chemistry, Bogazici University, Bebek 34342, Istanbul, Turkey.,Center for Life Sciences and Technologies, Bogazici University, 34342, Istanbul, Turkey
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Bebek 34342, Istanbul, Turkey.,Center for Life Sciences and Technologies, Bogazici University, 34342, Istanbul, Turkey
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21
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Poupart O, Schmocker A, Conti R, Moser C, Nuss KM, Grützmacher H, Mosimann PJ, Pioletti DP. In vitro Implementation of Photopolymerizable Hydrogels as a Potential Treatment of Intracranial Aneurysms. Front Bioeng Biotechnol 2020; 8:261. [PMID: 32318555 PMCID: PMC7146053 DOI: 10.3389/fbioe.2020.00261] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/13/2020] [Indexed: 12/19/2022] Open
Abstract
Intracranial aneurysms are increasingly being treated with endovascular therapy, namely coil embolization. Despite being minimally invasive, partial occlusion and recurrence are more frequent compared to open surgical clipping. Therefore, an alternative treatment is needed, ideally combining minimal invasiveness and long-term efficiency. Herein, we propose such an alternative treatment based on an injectable, radiopaque and photopolymerizable polyethylene glycol dimethacrylate hydrogel. The rheological measurements demonstrated a viscosity of 4.86 ± 1.70 mPa.s, which was significantly lower than contrast agent currently used in endovascular treatment (p = 0.42), allowing the hydrogel to be injected through 430 μm inner diameter microcatheters. Photorheology revealed fast hydrogel solidification in 8 min due to the use of a new visible photoinitiator. The addition of an iodinated contrast agent in the precursor contributed to the visibility of the precursor injection under fluoroscopy. Using a customized light-conducting microcatheter and illumination module, the hydrogel was implanted in an in vitro silicone aneurysm model. Specifically, in situ fast and controllable injection and photopolymerization of the developed hydrogel is shown to be feasible in this work. Finally, the precursor and the polymerized hydrogel exhibit no toxicity for the endothelial cells. Photopolymerizable hydrogels are expected to be promising candidates for future intracranial aneurysm treatments.
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Affiliation(s)
- Oriane Poupart
- Laboratory of Biomechanical Orthopedics, EPFL, Lausanne, Switzerland
| | - Andreas Schmocker
- Laboratory of Applied Photonics Devices, EPFL, Lausanne, Switzerland
- Department of Chemistry and Applied Biosciences, ETH, Zurich, Switzerland
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Riccardo Conti
- Department of Chemistry and Applied Biosciences, ETH, Zurich, Switzerland
| | - Christophe Moser
- Laboratory of Applied Photonics Devices, EPFL, Lausanne, Switzerland
| | - Katja M. Nuss
- Musculoskeletal Research Unit, Department of Molecular Mechanisms of Disease, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | | | - Pascal J. Mosimann
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland
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22
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DNAzyme-functionalized porous carbon nanospheres serve as a fluorescent nanoprobe for imaging detection of microRNA-21 and zinc ion in living cells. Mikrochim Acta 2020; 187:249. [DOI: 10.1007/s00604-020-04226-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/16/2020] [Indexed: 02/07/2023]
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23
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Luo Z, Xue K, Zhang X, Lim JYC, Lai X, Young DJ, Zhang ZX, Wu YL, Loh XJ. Thermogelling chitosan-based polymers for the treatment of oral mucosa ulcers. Biomater Sci 2020; 8:1364-1379. [PMID: 31916556 DOI: 10.1039/c9bm01754b] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Current treatments for oral mucosa-related ulcers use drugs to relieve pain and promote healing, but rarely consider drug resistance to bacterial infection in the microenvironment of the oral cavity or the prevention of bleeding from gingival mucosa ulcers. We herein report an injectable, thermogelling chitosan-based system to address these concerns. An aqueous solution of chitosan-based conjugates (chitosan-g-poly(N-isopropylacrylamide) [CS-g-PNIPAAM] including 1a [CS-g-PNIPAAM with less PNIPAAM] and 1b [CS-g-PNIPAAM with more PNIPAAM], and chitosan-g-poly(N-isopropylacrylamide)-g-polyacrylamide [CS-g-PNIPAAM-g-PAM] 3) could reversibly form semi-solid gels at physiological temperatures for easy application to oral cavity ulcer sites by injection. The chitosan-based conjugate thermogels prepared could inhibit both Gram-positive and Gram-negative bacteria and the two with higher chitosan and poly(N-isopropylacrylamide) contents (1a and 1b) promoted proliferation of gingival fibroblasts in vitro. These two thermogels also exhibited improved blood clotting in an in vivo rat study. Thermogels 1a and 1b effectively promoted ulcer healing and shortened ulcer healing times in an oral gingival mucosa ulcer model using Sprague Dawley (SD) rats. These thermogels showed no obvious toxicity to the main organs of SD rats undergoing gingival ulcer treatment. These results suggest that this antibacterial biomaterial could be a promising injectable therapeutic agent for the treatment for oral mucosa ulcers.
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Affiliation(s)
- Zheng Luo
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
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24
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Liu Y, Tian J, Xu L, Wang Y, Fei X, Li Y. Multilayer graphite nano-sheet composite hydrogel for solar desalination systems with floatability and recyclability. NEW J CHEM 2020. [DOI: 10.1039/d0nj04409a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The application of carbon-based nanomaterials with high photothermal conversion efficiencies in solar desalination has the advantages of economy, environmental protection, availability and sustainability.
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Affiliation(s)
- Yangkaixi Liu
- Instrumental Analysis Center
- Dalian Polytechnic University
- Dalian 116034
- China
- School of Light Industry and Chemical Engineering
| | - Jing Tian
- School of Biological Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Longquan Xu
- Instrumental Analysis Center
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Yi Wang
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Xu Fei
- Instrumental Analysis Center
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Yao Li
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
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25
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Wang X, Ai A, Yu Z, Deng M, Liu W, Zhou G, Li W, Zhang W, Cao Y, Wang X. Dual-modal non-invasive imaging in vitro and in vivo monitoring degradation of PLGA scaffold based gold nanoclusters. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110307. [PMID: 31761160 DOI: 10.1016/j.msec.2019.110307] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 09/25/2019] [Accepted: 10/11/2019] [Indexed: 12/22/2022]
Abstract
Biodegradable scaffolds play an important role in tissue engineering, and appropriate degradation and resorption rates of these scaffolds are necessary to accommodate tissue growth. Synthetic polymers are frequently used because of their ease of production, good biocompatibility and controllable degradation rates. However, monitoring the degradation of these polymers in vivo by a noninvasive approach remains limited. In this study, we designed a composite scaffold by labeling poly(lactic-co-glycolic acid) (PLGA) with gold nanoclusters (Au NCs), which were used for tracking in vivo degradation through dual-modal fluorescence/computed tomography (CT) imaging. The diameter of the Au NCs was approximately 2.5 nm, and the emission peak was at a wavelength of 700 nm. After labeling PLGA with the Au NCs, the fluorescence intensity of the Au NC/PLGA composite scaffold reached 9.0 × 109 (p/s/cm2/sr)/(μW/cm2), and the CT density of the scaffold increased to 200 HU. After the composite scaffold was implanted subcutaneously into nude mice, a continuous decrease in the fluorescence signal and CT value was observed. The mean fluorescence intensity was 8.3 × 109, 3.17 × 109, 2.26 × 109, 2.11 × 109, and 1.82 × 109 (p/s/cm2/sr)/(μW/cm2) from the first week to the fifth week, respectively. The mean CT value changed from 222.6 to 185.9, 149.1, 112.5, and 55.2 (Hounsfield unit, HU) at the different timepoints. Compared with the change in the fluorescence intensity, the change in the CT value was similar to the change in the weight, and the Pearson correlation coefficient between the change in the CT value and weight was 0.8626. Furthermore, the structure and morphology of the scaffolds at different timepoints were analyzed by three-dimensional (3-D) reconstruction. This novel method of noninvasive dynamic monitoring of biodegradable polymers in vivo provides insight into choosing suitable biomaterials for tissue engineering and regenerative medicine.
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Affiliation(s)
- Xiangsheng Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China
| | - Ai Ai
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China
| | - Ziyou Yu
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China
| | - Mingwu Deng
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China
| | - Wei Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China
| | - Guangdong Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China
| | - Wei Li
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China
| | - Wenjie Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China.
| | - Yilin Cao
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China.
| | - Xiansong Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Tissue Engineering Center of China, 639 Zhizaoju Road, Shanghai, 200011, PR China.
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Patel M, Lee HJ, Son S, Kim H, Kim J, Jeong B. Iron Ion-Releasing Polypeptide Thermogel for Neuronal Differentiation of Mesenchymal Stem Cells. Biomacromolecules 2019; 21:143-151. [DOI: 10.1021/acs.biomac.9b01096] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Madhumita Patel
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Hyun Jung Lee
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Seungyi Son
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Heeju Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Jinheung Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
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Song X, Qiao C, Zhao T, Bao B, Zhao S, Xu J, Liu H. Membrane Wrapping Pathway of Injectable Hydrogels: From Vertical Capillary Adhesion to Lateral Compressed Wrapping. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10631-10639. [PMID: 31294989 DOI: 10.1021/acs.langmuir.9b01395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Membrane wrapping pathway of injectable hydrogels (IHs) plays a vital role in the nanocarrier effectiveness and biomedical safety. Although considerable progress in understanding this complicated process has been made, the mechanism behind this process has remained elusive. Herein, with the help of large-scale dissipative particle dynamics simulations, we explore the molecular mechanism of membrane wrapping by systematically examining the IH architectures and hydrogel-lipid binding strengths. To the best of our knowledge, this is the first report on the membrane wrapping pathway on which IHs transform from vertical capillary adhesion to lateral compressed wrapping. This transformation results from the elastocapillary deformation of networked gels and nanoscale confinement of the bilayer membrane, and it takes long time for the IHs to be fully wrapped owing to the high energy barriers and wrapping-induced shape deformation. Collapsed morphologies and small compressed angles are identified in the IH capsules with a thick shell or strong binding strength to lipids. In addition, the IHs binding intensively to the membrane exhibit special nanoscale mixing and favorable deformability during the wrapping process. Our study provides a detailed mechanistic understanding of the influence of architecture and binding strength on the IH membrane wrapping efficiency. This work may serve as rational guidance for the design and fabrication of IH-based drug carriers and tissue engineering.
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Maddah M, Delavari H. H, Mehravi B. Preparation of Bio‐Inspired Melanin Nanoplatforms Chelated with Manganese Ions as a Potential T1 MRI Contrast Agent. ChemistrySelect 2019. [DOI: 10.1002/slct.201802926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mahsa Maddah
- Department of Higher TechnologiesTarbiat Modares University, Tehran Iran
| | - Hamid Delavari H.
- Department of Materials EngineeringTarbiat Modares University P.O. Box 14115–143, Tehran Iran
| | - Bita Mehravi
- Department of Medical NanotechnologyIran University of Medical Science, Tehran Iran
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Ji X, Wang J, Niu S, Ding C. Size-controlled DNA-cross-linked hydrogel coated silica nanoparticles served as a ratiometric fluorescent probe for the detection of adenosine triphosphate in living cells. Chem Commun (Camb) 2019; 55:5243-5246. [PMID: 30989156 DOI: 10.1039/c9cc01832h] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Herein, we have designed a ratiometric fluorescent nanoprobe for adenosine triphosphate sensing and imaging in living cells, based on silica nanoparticles and a DNA-functionalized hybrid hydrogel. This ratiometric detecting method could validly avoid false-positive signals. Due to its controllable size, favorable biocompatibility and biostability, the nanohydrogel exhibited high cellular permeability and fast response in living cells.
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Affiliation(s)
- Xiaoting Ji
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Junning Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Shuyan Niu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Caifeng Ding
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
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Zhong J, Fu H, Jia X, Lou H, Wan T, Luo H, Liu H, Zhong D, Luo X. A pH-/thermo-responsive hydrogel formed from N, N'-dibenzoyl-l-cystine: properties, self-assembly structure and release behavior of SA. RSC Adv 2019; 9:11824-11832. [PMID: 35517010 PMCID: PMC9063318 DOI: 10.1039/c8ra09058k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 04/09/2019] [Indexed: 01/27/2023] Open
Abstract
In this study, we report a pH-/thermo-responsive hydrogel formed by N,N'-dibenzoyl-l-cystine (DBC). It is difficult to dissolve DBC in water even on heating, and it exhibits no gelation ability. Interestingly, DBC is readily soluble in NaOH solution at room temperature and the self-assembled hydrogels are obtained by adjusting the basic DBC aqueous solution with HCl to achieve a given pH value (<3.5). When NaOH is added to the hydrogel (pH > 9.4), it becomes a sol again. This small-molecule hydrogel is characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, rheological measurement and differential scanning calorimetry. The results indicate that the DBC hydrogel exhibits excellent mechanical properties, thermo-reversibility, and pH-responsive properties. Fortunately, the single crystal of DBC is obtained by volatilizing its acid aqueous solution. It crystallizes in the monoclinic space group P21 (Z = 2) with lattice parameters a = 10.8180 (11) Å, b = 9.0405 (9) Å, c = 10.9871 (11) Å and β = 90.798 (3)°. By comparing the X-ray diffraction result of the DBC single crystal with that of its xerogel, the self-assembled structure of DBC in hydrogel has been ascertained. The gelators are self-assembled via strong intermolecular hydrogen bonds linking neighboring amide and carboxyl groups, π-π stacking interactions for aromatic rings, and hydrogen bonds between water molecules. In addition, the release behavior of salicylic acid (SA) molecules from the DBC gel is also investigated taking into account the DBC concentration, phosphate buffer solution (PBS) pH and SA concentration. When the concentrations of DBC and SA are 3.0 g L-1 and 200 mg L-1, respectively, the release ratio in PBS (pH = 4.0) reaches 58.02%. The diffusion-controlled mechanism is in accordance with Fickian diffusion control within the given time range.
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Affiliation(s)
- Jinlian Zhong
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Hongyu Fu
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Xinjian Jia
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Haoxiang Lou
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Tiantian Wan
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Haiqing Luo
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Huijin Liu
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Dichang Zhong
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Xuzhong Luo
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
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Qian C, Zhang T, Gravesande J, Baysah C, Song X, Xing J. Injectable and self-healing polysaccharide-based hydrogel for pH-responsive drug release. Int J Biol Macromol 2019; 123:140-148. [DOI: 10.1016/j.ijbiomac.2018.11.048] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/29/2018] [Accepted: 11/08/2018] [Indexed: 12/22/2022]
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32
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Goding J, Vallejo-Giraldo C, Syed O, Green R. Considerations for hydrogel applications to neural bioelectronics. J Mater Chem B 2019; 7:1625-1636. [DOI: 10.1039/c8tb02763c] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hydrogels have garnered interest as materials in bioelectronics due to the capacity to tailor their properties. Appropriate selection and design of hydrogel systems for this application requires an understanding of the physical, chemical and biological properties as well as their structure–property relationships.
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Affiliation(s)
- Josef Goding
- Department of Bioengineering
- Imperial College London
- London SW72AS
- UK
| | | | - Omaer Syed
- Department of Bioengineering
- Imperial College London
- London SW72AS
- UK
| | - Rylie Green
- Department of Bioengineering
- Imperial College London
- London SW72AS
- UK
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Kulkarni K, Hung J, Fulcher AJ, Chan AH, Hong A, Forsythe JS, Aguilar MI, Wise SG, Del Borgo MP. β3-Tripeptides Coassemble into Fluorescent Hydrogels for Serial Monitoring in Vivo. ACS Biomater Sci Eng 2018; 4:3843-3847. [DOI: 10.1021/acsbiomaterials.8b01065] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | - Juichien Hung
- Heart Research Institute, Newtown, New South Wales 2042, Australia
| | | | - Alex H.P. Chan
- Heart Research Institute, Newtown, New South Wales 2042, Australia
| | | | | | | | - Steven G. Wise
- Heart Research Institute, Newtown, New South Wales 2042, Australia
- Sydney Medical School, Sydney University, Sydney, New South Wales 2006, Australia
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Sontyana AG, Mathew AP, Cho KH, Uthaman S, Park IK. Biopolymeric In Situ Hydrogels for Tissue Engineering and Bioimaging Applications. Tissue Eng Regen Med 2018; 15:575-590. [PMID: 30603580 PMCID: PMC6171699 DOI: 10.1007/s13770-018-0159-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND Biopolymeric in situ hydrogels play a crucial role in the regenerative repair and replacement of infected or injured tissue. They possess excellent biodegradability and biocompatibility in the biological system, however only a few biopolymeric in situ hydrogels have been approved clinically. Researchers have been investigating new advancements and designs to restore tissue functions and structure, and these studies involve a composite of biometrics, cells and a combination of factors that can repair or regenerate damaged tissue. METHODS Injectable hydrogels, cross-linking mechanisms, bioactive materials for injectable hydrogels, clinically applied injectable biopolymeric hydrogels and the bioimaging applications of hydrogels were reviewed. RESULTS This article reviews the different types of biopolymeric injectable hydrogels, their gelation mechanisms, tissue engineering, clinical applications and their various in situ imaging techniques. CONCLUSION The applications of bioactive injectable hydrogels and their bioimaging are a promising area in tissue engineering and regenerative medicine. There is a high demand for injectable hydrogels for in situ imaging.
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Affiliation(s)
- Adonijah Graham Sontyana
- Department of Biomedical Sciences, Chonnam National University, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Ansuja Pulickal Mathew
- Department of Biomedical Sciences, Chonnam National University, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Ki-Hyun Cho
- Department of Plastic Surgery, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195 USA
| | - Saji Uthaman
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon, 34134 Republic of Korea
| | - In-Kyu Park
- Department of Biomedical Sciences, Chonnam National University, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju, 61469 Republic of Korea
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Bakker MH, Tseng CCS, Keizer HM, Seevinck PR, Janssen HM, Van Slochteren FJ, Chamuleau SAJ, Dankers PYW. MRI Visualization of Injectable Ureidopyrimidinone Hydrogelators by Supramolecular Contrast Agent Labeling. Adv Healthc Mater 2018; 7:e1701139. [PMID: 29658175 DOI: 10.1002/adhm.201701139] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 01/03/2018] [Indexed: 11/07/2022]
Abstract
Information about the in vivo location, shape, degradation, or erosion rate of injected in situ gelating hydrogels can be obtained with magnetic resonance imaging (MRI). Herein, an injectable supramolecular ureidopyrimidinone-based hydrogel (UPy-PEG) is functionalized with a modified Gadolinium(III)-DOTA complex (UPy-Gd) for contrast enhanced MRI. The contrast agent is designed to supramolecularly interact with the hydrogel network to enable high-quality imaging of this hydrogel. The applicability of the approach is demonstrated with successful visualization of the Gd-labeled UPy-PEG hydrogel after targeted intramyocardial catheter injection in a pig heart.
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Affiliation(s)
- Maarten H. Bakker
- Institute for Complex Molecular Systems and Laboratory of Chemical Biology; Eindhoven University of Technology; P. O. Box 513 5600 MB Eindhoven The Netherlands
| | - Cheyenne C. S. Tseng
- Department of Cardiology; Division Heart and Lungs; University Medical Center Utrecht; P. O. Box 85500 3584 CX Utrecht The Netherlands
| | - Henk M. Keizer
- SyMO-Chem B.V.; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Peter R. Seevinck
- Image Sciences Institute; University Medical Center Utrecht; Heidelberglaan 100 3584 CX Utrecht The Netherlands
| | - Henk M. Janssen
- SyMO-Chem B.V.; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Frebus J. Van Slochteren
- Department of Cardiology; Division Heart and Lungs; University Medical Center Utrecht; P. O. Box 85500 3584 CX Utrecht The Netherlands
| | - Steven A. J. Chamuleau
- Department of Cardiology; Division Heart and Lungs; University Medical Center Utrecht; P. O. Box 85500 3584 CX Utrecht The Netherlands
| | - Patricia Y. W. Dankers
- Institute for Complex Molecular Systems and Laboratory of Chemical Biology; Eindhoven University of Technology; P. O. Box 513 5600 MB Eindhoven The Netherlands
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Li Q, Liu C, Wen J, Wu Y, Shan Y, Liao J. The design, mechanism and biomedical application of self-healing hydrogels. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.05.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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37
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Non-invasive monitoring of in vivo degradation of a radiopaque thermoreversible hydrogel and its efficacy in preventing post-operative adhesions. Acta Biomater 2017; 55:396-409. [PMID: 28363786 DOI: 10.1016/j.actbio.2017.03.042] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 03/07/2017] [Accepted: 03/27/2017] [Indexed: 01/19/2023]
Abstract
In vivo behavior of hydrogel-based biomaterials is very important for rational design of hydrogels for various biomedical applications. Herein, we developed a facile method for in situ fabrication of radiopaque hydrogel. An iodinated functional diblock copolymer of poly(ethylene glycol) and aliphatic polyester was first synthesized by coupling the hydroxyl end of the diblock copolymer with 2,3,5-triiodobenzoic acid (TIB) and then a radiopaque thermoreversible hydrogel was obtained by mixing it with the virgin diblock copolymer. A concentrated aqueous solution of the copolymer blend was injectable at room temperature and spontaneously turned into an in situ hydrogel at body temperature after injection. The introduction of TIB moieties affords the capacity of X-ray opacity, enabling in vivo visualization of the hydrogel using Micro-CT. A rat model with cecum and abdominal defects was utilized to evaluate the efficacy of the radiopaque hydrogel in the prevention of post-operative adhesions, and a significant reduction of the post-operative adhesion formation was confirmed. Meanwhile, the maintenance of the radiopaque hydrogel in the abdomen after administration was non-destructively detected via Micro-CT scanning. The reconstructed three-dimensional images showed that the radiopaque hydrogel with an irregular morphology was located on the injured abdominal wall. The time-dependent profile of the volume of the radiopaque hydrogel determined by Micro-CT imaging was well consistent with the trend obtained from the dissection observation. Therefore, the radiopaque thermoreversible hydrogel can serve as a potential visualized biomedical implant and this practical mixing approach is also useful for further extension into the in vivo monitoring of other biomaterials. STATEMENT OF SIGNIFICANCE While a variety of biomaterials have been extensively studied, it is rare to monitor in vivo degradation and medical efficacy of a material after being implanted deeply into the body. Herein, the radiopaque thermoreversible hydrogel developed by us not only holds desirable performance on the prevention of post-operative abdominal adhesions, but also allows non-invasive monitoring of its in vivo degradation with CT imaging in a real-time, quantitative and three-dimensional manner. The methodology based on CT imaging provides important insights into the in vivo fate of the hydrogel after being deeply implanted into mammals for different biomedical applications and significantly reduces the amount of animals sacrificed.
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Zhu S, Wang J, Yan H, Wang Y, Zhao Y, Feng B, Duan K, Weng J. An injectable supramolecular self-healing bio-hydrogel with high stretchability, extensibility and ductility, and a high swelling ratio. J Mater Chem B 2017; 5:7021-7034. [DOI: 10.1039/c7tb01183k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reversible networks are a key factor for designing self-healing hydrogels with high stretching properties.
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Affiliation(s)
- Shukai Zhu
- Key Laboratory of Advance Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Jianxin Wang
- Key Laboratory of Advance Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Haoran Yan
- Key Laboratory of Advance Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Yingying Wang
- Key Laboratory of Advance Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Yuancong Zhao
- Key Laboratory of Advance Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Bo Feng
- Key Laboratory of Advance Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Ke Duan
- Key Laboratory of Advance Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Jie Weng
- Key Laboratory of Advance Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
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Sun J, Liu X, Lei Y, Tang M, Dai Z, Yang X, Yu X, Yu L, Sun X, Ding J. Sustained subconjunctival delivery of cyclosporine A using thermogelling polymers for glaucoma filtration surgery. J Mater Chem B 2017; 5:6400-6411. [DOI: 10.1039/c7tb01556a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We successfully developed a subconjunctival delivery system of CsA using an injectable thermogel to inhibit post-surgical scar formation after glaucoma filtration surgery.
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40
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Zhu H, Cai X, Wu L, Gu Z. A facile one-step gelation approach simultaneously combining physical and chemical cross-linking for the preparation of injectable hydrogels. J Mater Chem B 2017; 5:3145-3153. [DOI: 10.1039/c7tb00396j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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41
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Zhi H, Fei X, Tian J, Jing M, Xu L, Wang X, Liu D, Wang Y, Liu J. A novel transparent luminous hydrogel with self-healing property. J Mater Chem B 2017; 5:5738-5744. [DOI: 10.1039/c7tb00975e] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A Luminous hydrogel with self-healing properties and biocompatibility was synthesized by a Eu-containing PVA with boric acid as a cross-linking agent.
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Affiliation(s)
- Hui Zhi
- Instrumental Analysis Center
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
- School of Biological Engineering
| | - Xu Fei
- Instrumental Analysis Center
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Jing Tian
- School of Biological Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Muzi Jing
- School of Biological Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Longquan Xu
- Instrumental Analysis Center
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Xiuying Wang
- Instrumental Analysis Center
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Dongmei Liu
- People's Liberation Army of China 93015 Troop
- Force Medical Team
- P. R. China
| | - Yi Wang
- School of Biological Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Jingyun Liu
- Instrumental Analysis Center
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
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42
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Ma Q, Lei K, Ding J, Yu L, Ding J. Design, synthesis and ring-opening polymerization of a new iodinated carbonate monomer: a universal route towards ultrahigh radiopaque aliphatic polycarbonates. Polym Chem 2017. [DOI: 10.1039/c7py01411b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A universal route towards ultrahigh radiopaque aliphatic polycarbonates was developed based on a new iodinated carbonate monomer.
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Affiliation(s)
- Qian Ma
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Kewen Lei
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Jian Ding
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
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