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Jin H, Zhu X, Liu H, Wang L, Liu S, Zhang H. Type-I Collagen Polypeptide-Based Composite Nanofiber Membranes for Fast and Efficient Bone Regeneration. ACS Biomater Sci Eng 2024. [PMID: 39150362 DOI: 10.1021/acsbiomaterials.4c00669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
The clinical treatment of bone defects includes allogeneic bone transplantation and autologous bone transplantation. However, they all have their own limitations, and the scope of application is limited. In recent years, bone tissue engineering scaffolds based on a variety of materials have been well developed and achieved good bone regeneration ability. However, most scaffold materials always face problems such as high biotoxicity, leading to inflammation and poor bioactivity, which limits the bone regeneration effect and prolongs the bone regeneration time. In our work, we prepared hydroxyapatite, erythropoietin (EPO), and osteogenic growth peptide (OGP) codoped type-I collagen (Col I) polypeptide nanofiber membranes (NFMs) by electrostatic spinning. In cell experiments, the composite NFMs had low cytotoxicity and promoted osteogenic differentiation of rat bone marrow mesenchymal stem cells. Quantitative real-time polymerase chain reaction and alkaline phosphatase staining confirmed the high expression of osteogenic genes, and alizarin red S staining directly confirmed the appearance of calcium nodules. In animal experiments, the loaded hydroxyapatite formed multiple independent mineralization centers in the defect center. Under the promotion of Col I, EPO, and OGP, the bone continued to grow along the mineralization centers as well as inward the defect edge, and the bone defect completely regenerated in about two months. The hematological and histological analyses proved the safety of the experiments. This kind of design to promote bone regeneration by simulating bone composition, introducing mineralization center and signal molecules, can shorten repair time, improve repair effect, and has good practical prospects in the future.
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Affiliation(s)
- Hao Jin
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun 130021, P. R. China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xuanqi Zhu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun 130021, P. R. China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Heng Liu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun 130021, P. R. China
| | - Lu Wang
- Department of Pediatric Dentistry, Hospital of Stomatology, Jilin University, Changchun 130021, P. R. China
| | - Shuwei Liu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun 130021, P. R. China
| | - Hao Zhang
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun 130021, P. R. China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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2
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Yu K, Yang L, Zhang N, Wang S, Liu H. Development of nanocellulose hydrogels for application in the food and biomedical industries: A review. Int J Biol Macromol 2024; 272:132668. [PMID: 38821305 DOI: 10.1016/j.ijbiomac.2024.132668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 06/02/2024]
Abstract
As the most abundant and renewable natural resource, cellulose has attracted significant attention and research interest for the production of hydrogels (HGs). To address environmental issues and emerging demands, the benefits of naturally produced HGs include excellent mechanical properties and superior biocompatibility. HGs are three-dimensional networks created by chemical or physical cross-linking of linear or branched hydrophilic polymers and have high capacity for absorption of water and biological fluids. Although widely used in the food and biomedical fields, most HGs are not biodegradable. Nanocellulose hydrogels (NC-HGs) have been extensively applied in the food industry for detection of freshness, chemical additives, and substitutes, as well as the biomedical field for use as bioengineering scaffolds and drug delivery systems owing to structural interchangeability and stimuli-responsive properties. In this review article, the sources, structures, and preparation methods of NC-HGs are described, applications in the food and biomedical industries are summarized, and current limitations and future trends are discussed.
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Affiliation(s)
- Kejin Yu
- College of Food Science and Engineering, Bohai University, Jinzhou, Liaoning 121013, China; Institute of Ocean Research, Bohai University, Jinzhou 121013, China
| | - Lina Yang
- College of Food Science and Engineering, Bohai University, Jinzhou, Liaoning 121013, China; Institute of Ocean Research, Bohai University, Jinzhou 121013, China.
| | - Ning Zhang
- College of Food Science and Engineering, Bohai University, Jinzhou, Liaoning 121013, China; Institute of Ocean Research, Bohai University, Jinzhou 121013, China
| | - Shengnan Wang
- College of Food Science and Engineering, Bohai University, Jinzhou, Liaoning 121013, China; Institute of Ocean Research, Bohai University, Jinzhou 121013, China
| | - He Liu
- College of Food Science and Engineering, Bohai University, Jinzhou, Liaoning 121013, China; Institute of Ocean Research, Bohai University, Jinzhou 121013, China
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3
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Shan BH, Wu FG. Hydrogel-Based Growth Factor Delivery Platforms: Strategies and Recent Advances. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2210707. [PMID: 37009859 DOI: 10.1002/adma.202210707] [Citation(s) in RCA: 41] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/25/2023] [Indexed: 06/19/2023]
Abstract
Growth factors play a crucial role in regulating a broad variety of biological processes and are regarded as powerful therapeutic agents in tissue engineering and regenerative medicine in the past decades. However, their application is limited by their short half-lives and potential side effects in physiological environments. Hydrogels are identified as having the promising potential to prolong the half-lives of growth factors and mitigate their adverse effects by restricting them within the matrix to reduce their rapid proteolysis, burst release, and unwanted diffusion. This review discusses recent progress in the development of growth factor-containing hydrogels for various biomedical applications, including wound healing, brain tissue repair, cartilage and bone regeneration, and spinal cord injury repair. In addition, the review introduces strategies for optimizing growth factor release including affinity-based delivery, carrier-assisted delivery, stimuli-responsive delivery, spatial structure-based delivery, and cellular system-based delivery. Finally, the review presents current limitations and future research directions for growth factor-delivering hydrogels.
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Affiliation(s)
- Bai-Hui Shan
- State Key Laboratory of Digital Medical Engineering Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Fu-Gen Wu
- State Key Laboratory of Digital Medical Engineering Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
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4
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Lu B, Cheng H, Qu L. Inorganic Hydrogel Based on Low-Dimensional Nanomaterials. ACS NANO 2024; 18:2730-2749. [PMID: 38221737 DOI: 10.1021/acsnano.3c11262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Composed of three-dimensional (3D) nanoscale inorganic bones and up to 99% water, inorganic hydrogels have attracted much attention and undergone significant growth in recent years. The basic units of inorganic hydrogels could be metal nanoparticles, metal nanowires, SiO2 nanowires, graphene nanosheets, and MXene nanosheets, which are then assembled into the special porous structures by the sol-gel process or gelation via either covalent or noncovalent interactions. The high electrical and thermal conductivity, resistance to corrosion, stability across various temperatures, and high surface area make them promising candidates for diverse applications, such as energy storage, catalysis, adsorption, sensing, and solar steam generation. Besides, some interesting derivatives, such as inorganic aerogels and xerogels, can be produced through further processing, diversifying their functionalities and application domains greatly. In this context, we primarily provide a comprehensive overview of the current status of inorganic hydrogels and their derivatives, including the structures of inorganic hydrogels with various compositions, their gelation mechanisms, and their exceptional practical performance in fields related to energy and environmental applications.
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Affiliation(s)
- Bing Lu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
- Laboratory of Flexible Electronics Technology, State Key Laboratory of Tribology in Advanced Equipment (SKLT), Tsinghua University, Beijing 100084, P. R. China
| | - Huhu Cheng
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
- Laboratory of Flexible Electronics Technology, State Key Laboratory of Tribology in Advanced Equipment (SKLT), Tsinghua University, Beijing 100084, P. R. China
| | - Liangti Qu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
- Laboratory of Flexible Electronics Technology, State Key Laboratory of Tribology in Advanced Equipment (SKLT), Tsinghua University, Beijing 100084, P. R. China
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5
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Li J, Li L, Wu T, Shi K, Bei Z, Wang M, Chu B, Xu K, Pan M, Li Y, Hu X, Zhang L, Qu Y, Qian Z. An Injectable Thermosensitive Hydrogel Containing Resveratrol and Dexamethasone-Loaded Carbonated Hydroxyapatite Microspheres for the Regeneration of Osteoporotic Bone Defects. SMALL METHODS 2024; 8:e2300843. [PMID: 37800985 DOI: 10.1002/smtd.202300843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/13/2023] [Indexed: 10/07/2023]
Abstract
Bone defects in osteoporosis usually present excessive reactive oxygen species (ROS), abnormal inflammation levels, irregular shapes and impaired bone regeneration ability; therefore, osteoporotic bone defects are difficult to repair. In this study, an injectable thermosensitive hydrogel poly (D, L-lactide)-poly (ethylene glycol)- poly (D, L-lactide) (PLEL) system containing resveratrol (Res) and dexamethasone (DEX) is designed to create a microenvironment conducive to osteogenesis in osteoporotic bone defects. This PLEL hydrogel is injected and filled irregular defect areas and achieving a rapid sol-gel transition in situ. Res has a strong anti-inflammatory effects that can effectively remove excess free radicals at the damaged site, guide macrophage polarization to the M2 phenotype, and regulate immune responses. Additionally, DEX can promote osteogenic differentiation. In vitro experiments showed that the hydrogel effectively promoted osteogenic differentiation of mesenchymal stem cells, removed excess intracellular ROS, and regulated macrophage polarization to reduce inflammatory responses. In vivo experiments showed that the hydrogel promoted osteoporotic bone defect regeneration and modulated immune responses. Overall, this study confirmed that the hydrogel can treat osteoporotic bone defects by synergistically modulating bone damage microenvironment, alleviating inflammatory responses, and promoting osteogenesis; thus, it represents a promising drug delivery strategy to repair osteoporotic bone defects.
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Affiliation(s)
- Jianan Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Lang Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Tingkui Wu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Kun Shi
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhongwu Bei
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Meng Wang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Bingyang Chu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Keqi Xu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Meng Pan
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yicong Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xulin Hu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Linghong Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ying Qu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Hematology and Institute of Hematology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhiyong Qian
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
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6
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Du W, Wang T, Hu S, Luan J, Tian F, Ma G, Xue J. Engineering of electrospun nanofiber scaffolds for repairing brain injury. ENGINEERED REGENERATION 2023; 4:289-303. [DOI: 10.1016/j.engreg.2023.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/14/2023] Open
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7
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Luo P, Fang J, Yang D, Yu L, Chen H, Jiang C, Guo R, Zhu T, Tang S. OP3-4 peptide sustained-release hydrogel inhibits osteoclast formation and promotes vascularization to promote bone regeneration in a rat femoral defect model. Bioeng Transl Med 2023; 8:e10414. [PMID: 36925715 PMCID: PMC10013759 DOI: 10.1002/btm2.10414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 08/23/2022] [Accepted: 08/28/2022] [Indexed: 11/10/2022] Open
Abstract
Bone injury caused changes to surrounding tissues, leading to a large number of osteoclasts appeared to clear the damaged bone tissue before bone regeneration. However, overactive osteoclasts will inhibit bone formation. In this study, we prepared methacrylylated gelatin (GelMA)-based hydrogel to co-crosslink with OP3-4 peptide, a receptor activator of NF-κB ligand (RANKL) binding agent, to achieve the slow release of OP3-4 peptide to inhibit the activation of osteoclasts, thus preventing the long-term existence of osteoclasts from affecting bone regeneration, and promoting osteogenic differentiation. Moreover, CXCL9 secreted by osteoblasts will bind to endogenous VEGF and inhibit vascularization, finally hinder bone formation. Thus, anti-CXCL9 antibodies (A-CXCL9) were also loaded in the hydrogel to neutralize excess CXCL9. The hydrogel slow released of OP3-4 cyclic peptide and A-CXCL9 to simultaneously inhibiting osteoclast activation and promoting vascularization, thereby accelerating the healing of femur defect. Further analysis of osteogenic protein expression and signal pathways showed that the hydrogel may be through activating the AKT-RUNX2-ALP pathway and ultimately promote osteogenic differentiation. This dual-acting hydrogel can effectively prevent nonunion caused by low vascularization and provide long-term support for the treatment of bone injury.
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Affiliation(s)
- Peng Luo
- Department of Sport Medicine Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital) Shenzhen China
| | - Jiarui Fang
- Department of Sport Medicine Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital) Shenzhen China
| | - Dazhi Yang
- Department of Spine Surgery Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital) Shenzhen China
| | - Lan Yu
- Department of Laboratory Medicine Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital) Shenzhen China
| | - Houqing Chen
- Department of Sport Medicine Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital) Shenzhen China
| | - Changging Jiang
- Department of Sport Medicine Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital) Shenzhen China
| | - Rui Guo
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering Jinan University Guangzhou China
| | - Tao Zhu
- Department of Respiratory and Critical Care Medicine, and Preclinical Research Center Suining Central Hospital Sichuan China
| | - Shuo Tang
- Department of Orthopaedics, The Eighth Affiliated Hospital Sun Yat-sen University Shenzhen China
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8
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Recent advances in electrospun protein fibers/nanofibers for the food and biomedical applications. Adv Colloid Interface Sci 2023; 311:102827. [PMID: 36584601 DOI: 10.1016/j.cis.2022.102827] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/29/2022]
Abstract
Electrospinning (ES) is one of the most investigated processes for the convenient, adaptive, and scalable manufacturing of nano/micro/macro-fibers. With this technique, virgin and composite fibers may be made in different designs using a wide range of polymers (both natural and synthetic). Electrospun protein fibers (EPF) shave desirable capabilities such as biocompatibility, low toxicity, degradability, and solvolysis. However, issues with the proteins' processibility have limited their widespread utilization. This paper gives an overview of the features of protein-based biomaterials, which are already being employed and has the potential to be exploited for ES. State-of-the-art examples showcasing the usefulness of EPFs in the food and biomedical industries, including tissue engineering, wound dressings, and drug delivery, provided in the applications. The EPFs' future perspective and the challenge they pose are presented at the end. It is believed that protein and biopolymeric nanofibers will soon be manufactured on an industrial scale owing to the limitations of employing synthetic materials, as well as enormous potential of nanofibers in other fields, such as active food packaging, regenerative medicine, drug delivery, cosmetic, and filtration.
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Phogat K, Ghosh SB, Bandyopadhyay‐Ghosh S. Recent advances on injectable nanocomposite hydrogels towards bone tissue rehabilitation. J Appl Polym Sci 2022. [DOI: 10.1002/app.53362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Kapender Phogat
- Engineered Biomedical Materials Research and Innovation Centre (EnBioMatRIC), Department of Mechanical Engineering Manipal University Jaipur Jaipur Rajasthan India
- Department of Mechanical Engineering JECRC University Jaipur Rajasthan India
| | - Subrata Bandhu Ghosh
- Engineered Biomedical Materials Research and Innovation Centre (EnBioMatRIC), Department of Mechanical Engineering Manipal University Jaipur Jaipur Rajasthan India
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10
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Guo Y, Sun L, Wang Y, Wang Q, Jing D, Liu S. Nanomaterials based on thermosensitive polymer in biomedical field. Front Chem 2022; 10:946183. [PMID: 36212064 PMCID: PMC9532752 DOI: 10.3389/fchem.2022.946183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 08/30/2022] [Indexed: 11/27/2022] Open
Abstract
The progress of nanotechnology enables us to make use of the special properties of materials on the nanoscale and open up many new fields of biomedical research. Among them, thermosensitive nanomaterials stand out in many biomedical fields because of their “intelligent” behavior in response to temperature changes. However, this article mainly reviews the research progress of thermosensitive nanomaterials, which are popular in biomedical applications in recent years. Here, we simply classify the thermally responsive nanomaterials according to the types of polymers, focusing on the mechanisms of action and their advantages and potential. Finally, we deeply investigate the applications of thermosensitive nanomaterials in drug delivery, tissue engineering, sensing analysis, cell culture, 3D printing, and other fields and probe the current challenges and future development prospects of thermosensitive nanomaterials.
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Affiliation(s)
- Yingshu Guo
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- *Correspondence: Yingshu Guo,
| | - Li Sun
- School of Chemistry and Chemical Engineering, Linyi University, Linyi, China
| | - Yajing Wang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi, China
| | - Qianqian Wang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi, China
| | - Dan Jing
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Shiwei Liu
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
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11
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Hydrogel: A promising new technique for treating Alzheimer’s disease. J Transl Int Med 2022; 10:15-17. [PMID: 35702184 PMCID: PMC8997806 DOI: 10.2478/jtim-2022-0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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12
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Sun X, Liu Y, Wei Y, Wang Y. Chirality-induced bionic scaffolds in bone defects repair-a review. Macromol Biosci 2022; 22:e2100502. [PMID: 35246939 DOI: 10.1002/mabi.202100502] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/27/2022] [Indexed: 11/12/2022]
Abstract
Due to lack of amino sugar with aging, people will suffer from various epidemic bone diseases called "undead cancer" by the World Health Organization. The key problem in bone tissue engineering that has not been completely resolved is the repair of critical large-scale bone and cartilage defects. The chirality of the extracellular matrix plays a decisive role in the physiological activity of bone cells and the occurrence of bone tissue, but the mechanism of chirality in regulating cell adhesion and growth is still in the early stage of exploration. This paper reviews the application progress of chirality-induced bionic scaffolds in bone defects repair based on "soft" and "hard" scaffolds. The aim is to summarize the effects of different chiral structures (L-shaped and D-shaped) in the process of inducing bionic scaffolds in bone defects repair. In addition, many technologies and methods as well as issues worthy of special consideration for preparing chirality-induced bionic scaffolds are also introduced. We expect that this work can provide inspiring ideas for designing new chirality-induced bionic scaffolds and promote the development of chirality in bone tissue engineering. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Xinyue Sun
- Department of Chemistry, School of Science, Tianjin University, Tianjin, 300354, P. R. China
| | - Yue Liu
- Department of Spinal Surgery, Tianjin Hospital, Tianjin, 300211, P. R. China
| | - Yuping Wei
- Department of Chemistry, School of Science, Tianjin University, Tianjin, 300354, P. R. China
| | - Yong Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin, 300354, P. R. China
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13
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Zhang Y, Jiang Y, Zou D, Yuan B, Ke HZ, Li W. Therapeutics for enhancement of spinal fusion: A mini review. J Orthop Translat 2021; 31:73-79. [PMID: 34934624 DOI: 10.1016/j.jot.2021.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022] Open
Abstract
Objective With the advances in biological technologies over the past 20 years, a number of new therapies to promote bone healing have been introduced. Particularly in the spinal surgery field, more unprecedented biological therapeutics become available to enhance spinal fusion success rate along with advanced instrumentation approaches. Yet surgeons may not have been well informed about their safety and efficacy profiles in order to improve clinical practices. Therefore there is a need to summarize the evidence and bring the latest progress to surgeons for better clinical services for patients. Methods We comprehensively reviewed the literatures in regard to the biological therapeutics for enhancement of spinal fusion published in the last two decades. Results Autograft bone is still the gold standard for bone grafting in spinal fusion surgery due to its good osteoconductive, osteoinductive, and osteogenic abilities. Accumulating evidence suggests that adding rhBMPs in combination with autograft effectively promotes the fusion rate and improves surgical outcomes. However, the stimulating effect on spinal fusion of other growth factors, including PDGF, VEGF, TGF-beta, and FGF, is not convincing, while Nell-1 and activin A exhibited preliminary efficacy. In terms of systemic therapeutic approaches, the osteoporosis drug Teriparatide has played a positive role in promoting bone healing after spinal surgery, while new medications such as denosumab and sclerostin antibodies still need further validation. Currently, other treatment, such as controlled-release formulations and carriers, are being studied for better releasing profile and the administration convenience of the active ingredients. Conclusion As the world's population continues to grow older, the number of spinal fusion cases grows substantially due to increased surgical needs for spinal degenerative disease (SDD). Critical advancements in biological therapeutics that promote spinal fusion have brought better clinical outcomes to patients lately. With the accumulation of higher-level evidence, the safety and efficacy of present and emerging products are becoming more evident. These emerging therapeutics will shift the landscape of perioperative therapy for the enhancement of spinal fusion.
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Affiliation(s)
- Yidan Zhang
- Angitia Biopharmaceuticals, Guangzhou, China
| | - Yu Jiang
- Orthopaedic Department, Peking University Third Hospital, Beijing, China.,Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, Beijing, China
| | - Da Zou
- Orthopaedic Department, Peking University Third Hospital, Beijing, China.,Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, Beijing, China
| | - Baozhi Yuan
- Angitia Biopharmaceuticals, Guangzhou, China
| | - Hua Zhu Ke
- Angitia Biopharmaceuticals, Guangzhou, China
| | - Weishi Li
- Orthopaedic Department, Peking University Third Hospital, Beijing, China.,Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, Beijing, China
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14
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Qu Y, Chu B, Wei X, Chen Y, Yang Y, Hu D, Huang J, Wang F, Chen M, Zheng Y, Qian Z. Cancer-Cell-Biomimetic Nanoparticles for Targeted Therapy of Multiple Myeloma Based on Bone Marrow Homing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 34:e2107883. [PMID: 34877715 DOI: 10.1002/adma.202107883] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 12/05/2021] [Indexed: 02/05/2023]
Abstract
Multiple myeloma (MM) is the second most common hematological malignancy. It is characterized by abnormal transformation and uncontrolled clonal proliferation of malignant plasma cells in the bone marrow (BM), which can destroy bone structure and inhibit hematopoiesis. Although there are new therapeutic methods, they are not curative, mainly because it is difficult to deliver an effective amount of drug to BM, leading to a failure to eradicate MM cells inside the BM. BM homing is an important and unique characteristic of MM cells and it is mainly affected by surface molecules on the tumor cell membrane. Inspired by this mechanism, an MM-mimicking nanocarrier is developed by coating bortezomib (BTZ)-loaded poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) (PCEC) nanoparticles with the MM cell membrane. The MM-mimicking nanoparticles can enter the BM based on BM homing as a "Trojan horse" and target the tumor cells through homologous targeting. In this way, drug availability at the myeloma site is enhanced so as to inhibit MM growth. In addition, these MM-mimicking nanoparticles can escape phagocytosis by the MPS and have a long circulation effect. The in vivo therapeutic results demonstrate an excellent treatment efficacy for MM. Accordingly, this strategy may be a promising platform for the treatment of MM.
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Affiliation(s)
- Ying Qu
- State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
- Department of Hematology and Institute of Hematology West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Bingyang Chu
- State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Xue Wei
- Department of Hematology and Institute of Hematology West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Yingying Chen
- Department of Hematology and Institute of Hematology West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Yun Yang
- State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Danrong Hu
- State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Jingcao Huang
- Department of Hematology and Institute of Hematology West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Fangfang Wang
- Department of Hematology and Institute of Hematology West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Mengran Chen
- Department of Hematology and Institute of Hematology West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Yuhuan Zheng
- Department of Hematology and Institute of Hematology West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Zhiyong Qian
- State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
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Physical Gold Nanoparticle-Decorated Polyethylene Glycol-Hydroxyapatite Composites Guide Osteogenesis and Angiogenesis of Mesenchymal Stem Cells. Biomedicines 2021; 9:biomedicines9111632. [PMID: 34829861 PMCID: PMC8615876 DOI: 10.3390/biomedicines9111632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 10/27/2021] [Accepted: 11/04/2021] [Indexed: 12/26/2022] Open
Abstract
In this study, polyethylene glycol (PEG) with hydroxyapatite (HA), with the incorporation of physical gold nanoparticles (AuNPs), was created and equipped through a surface coating technique in order to form PEG-HA-AuNP nanocomposites. The surface morphology and chemical composition were characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), UV–Vis spectroscopy (UV–Vis), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and contact angle assessment. The effects of PEG-HA-AuNP nanocomposites on the biocompatibility and biological activity of MC3T3-E1 osteoblast cells, endothelial cells (EC), macrophages (RAW 264.7), and human mesenchymal stem cells (MSCs), as well as the guiding of osteogenic differentiation, were estimated through the use of an in vitro assay. Moreover, the anti-inflammatory, biocompatibility, and endothelialization capacities were further assessed through in vivo evaluation. The PEG-HA-AuNP nanocomposites showed superior biological properties and biocompatibility capacity for cell behavior in both MC3T3-E1 cells and MSCs. These biological events surrounding the cells could be associated with the activation of adhesion, proliferation, migration, and differentiation processes on the PEG-HA-AuNP nanocomposites. Indeed, the induction of the osteogenic differentiation of MSCs by PEG-HA-AuNP nanocomposites and enhanced mineralization activity were also evidenced in this study. Moreover, from the in vivo assay, we further found that PEG-HA-AuNP nanocomposites not only facilitate the anti-immune response, as well as reducing CD86 expression, but also facilitate the endothelialization ability, as well as promoting CD31 expression, when implanted into rats subcutaneously for a period of 1 month. The current research illustrates the potential of PEG-HA-AuNP nanocomposites when used in combination with MSCs for the regeneration of bone tissue, with their nanotopography being employed as an applicable surface modification approach for the fabrication of biomaterials.
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Zhong H, Li Z, Zhao T, Chen Y. Surface Modification of Nanofibers by Physical Adsorption of Fiber-Homologous Amphiphilic Copolymers and Nanofiber-Reinforced Hydrogels with Excellent Tissue Adhesion. ACS Biomater Sci Eng 2021; 7:4828-4837. [PMID: 34478620 DOI: 10.1021/acsbiomaterials.1c00982] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report a simple approach to modify hydrophobic PCL nanofibers by adsorption of a fiber-homologous amphiphilic triblock copolymer (PCL-b-PEG-b-PCL, PCEC). The modified PCL nanofibers were then utilized to reinforce a physical hydrogel, which was formed by micellar crosslinking of the same PCEC triblock copolymer. Therefore, the copolymer played a dual role in not only dispersing and stabilizing nanofibers but also additionally providing a framework for the hydrogel matrix. The mechanical strength of the hydrogel was significantly enhanced by addition of the modified PCL nanofibers, and the gel modulus can be tuned by varying the concentration of the copolymer and nanofibers. The effect of nanofiber size and content on the mechanical properties of the hydrogel matrices was studied. Different from hydrogel composites that were reinforced by 2D fiber meshes or 3D woven fiber networks, this free fiber-reinforced hydrogel can be readily injected to adapt to the environmental shape and self-heal. The hydrogel composites showed superior tissue adhesion properties compared to the commercially available fibrin glue, especially in muscle adhesion. Due to its injectable and self-healing properties, this nanofiber-reinforced hydrogel may have great potential as a new type of tissue sealant.
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Affiliation(s)
- Hai Zhong
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhiyong Li
- Nepgel Chemical Co., Ltd., No. 127, China South-City Industrial Zone, Longgang District, Shenzhen 518111, China
| | - Tianyu Zhao
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China
| | - Yongming Chen
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China
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17
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Sheng S, Wei C, Ma T, Zhang Y, Zhu D, Dong X, Lv F. Multiplex fluorescence imaging‐guided programmed delivery of doxorubicin and curcumin from a nanoparticles/hydrogel system for synergistic chemotherapy. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Shupei Sheng
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin China
| | - Chang Wei
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin China
| | - Teng Ma
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin China
| | - Yan Zhang
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin China
| | - Dunwan Zhu
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin China
| | - Xia Dong
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin China
| | - Feng Lv
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin China
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18
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Synthesis, physical and mechanical properties of amphiphilic hydrogels based on polycaprolactone and polyethylene glycol for bioapplications: A review. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.05.051] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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19
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Xu H, Shen M, Shang H, Xu W, Zhang S, Yang HR, Zhou D, Hakkarainen M. Osteoconductive and Antibacterial Poly(lactic acid) Fibrous Membranes Impregnated with Biobased Nanocarbons for Biodegradable Bone Regenerative Scaffolds. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02165] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Huan Xu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Mengyuan Shen
- The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, Xuzhou 221002, China
| | - Han Shang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Wenxuan Xu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Shenghui Zhang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Hao-Ran Yang
- State Laboratory of Surface and Interface Science and Technology, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Dongmei Zhou
- The Affiliated Hospital of Xuzhou Medical University, Xuzhou Medical University, Xuzhou 221002, China
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
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20
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Chen S, Guo R, Liang Q, Xiao X. Multifunctional modified polylactic acid nanofibrous scaffold incorporating sodium alginate microspheres decorated with strontium and black phosphorus for bone tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1598-1617. [PMID: 33977873 DOI: 10.1080/09205063.2021.1927497] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Polylactic acid (PLA) nanofibrous scaffolds have received extensive attention in the field of tissue engineering due to their excellent degradability, biocompatibility and the biomimetic extracellular matrix (ECM) topographies. However, the cell affinity and osteogenic activity of PLA scaffolds is not satisfactory because of their intrinsic hydrophobicity, the absence of cell recognition sites and the nucleation sites of the in vivo biomineralization. Furthermore, effective anti-inflammatory activity for the in vivo scaffold could not be ignored, so a strategy to develop a multifunctional PLLA (poly-L-lactic acid) nanofibrous scaffold with improved hydrophilicity, osteoinductivity, excellent near-infrared photothermal-responsive drug release capacity and anti-inflammatory activity via incorporating sodium alginate microspheres decorated with strontium and ibuprofen-loaded black phosphorus (BP + IBU@SA microspheres) into aminated modified PLLA nanofiber network is proposed in this study. Scanning electron microscopy (SEM) observation showed that the BP + IBU@SA microspheres were homogeneously dispersed into the modified PLLA matrix with uniform nanofiber structure and the chemical composition of the as-prepared scaffolds was confirmed by X-ray diffraction analysis (XRD) and elemental mapping. The photothermal property of the scaffolds was assessed under near-infrared (NIR) light irradiation, the results manifested that the entrapment of BP nanosheets endowed PLLA nanofibrous scaffold with significantly high photothermal conversion efficiency and optical cycle stability. Meanwhile, the scaffold also displayed an excellent photothermal-responsive intelligent drug release performance toward Sr2+ and ibuprofen. Moreover, the in vitro studies revealed that the as-developed scaffolds possessed a good biocompatibility for cell adhesion and proliferation and an improved bioactivity to induce apatite formation. All these results indicated the potential of the fabricated scaffolds in tissue engineering applications.
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Affiliation(s)
- Shunyu Chen
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Rongying Guo
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Qingshuang Liang
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Xiufeng Xiao
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
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21
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Anup N, Chavan T, Chavan S, Polaka S, Kalyane D, Abed SN, Venugopala KN, Kalia K, Tekade RK. Reinforced electrospun nanofiber composites for drug delivery applications. J Biomed Mater Res A 2021; 109:2036-2064. [PMID: 33834610 DOI: 10.1002/jbm.a.37187] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 02/15/2021] [Accepted: 03/24/2021] [Indexed: 01/10/2023]
Abstract
Electrospun technology becomes a valuable means of fabricating functional polymeric nanofibers with distinctive morphological properties for drug delivery applications. Nanofibers are prepared from the polymer solution, which allows the direct incorporation of therapeutics such as small drug molecules, genes, and proteins by merely mixing them into the polymeric solution. Due to their biocompatibility, adhesiveness, sterility, and efficiency in delivering diverse cargoes, electrospun nanofibers have gained much attention. This review discusses the capabilities of the electrospun nanofibers in delivering different therapeutics like small molecules, genes, and proteins to their desired target site for treating various ailments. The potential of nanofibers in administering through multiple administration routes and the associated challenges has also been expounded along with a cross-talk about the commercial products of nanofibers for biomedical applications.
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Affiliation(s)
- Neelima Anup
- Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Gandhinagar, India
| | - Tejas Chavan
- Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Gandhinagar, India
| | - Shruti Chavan
- Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Gandhinagar, India
| | - Suryanarayana Polaka
- Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Gandhinagar, India
| | - Dnyaneshwar Kalyane
- Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Gandhinagar, India
| | - Sara Nidal Abed
- School of Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Katharigatta N Venugopala
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia.,Departments of Biotechnology and Food Technology, Durban University of Technology, Durban, South Africa
| | - Kiran Kalia
- Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Gandhinagar, India
| | - Rakesh K Tekade
- Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Gandhinagar, India
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22
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Yan Z, Meng X, Su Y, Chen Y, Zhang L, Xiao J. Double layer composite membrane for preventing tendon adhesion and promoting tendon healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111941. [PMID: 33812576 DOI: 10.1016/j.msec.2021.111941] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 01/22/2021] [Accepted: 01/30/2021] [Indexed: 02/03/2023]
Abstract
Electrospun membranes and hydrogels are widely used to prevent tendon adhesion. Hydrophobic anti-inflammatory drugs could be fully loaded on the electrospinning membrane through the electrospinning process, which can better prevent tendon adhesion. Basic fibroblast growth factor (bFGF) could promote tendon healing. However, the bioactivity of free bFGF is easily inactivated, therefore, a suitable carrier is needed. As a carrier, hydrogel has little effect on the bioactivity of the protein drugs. In this work, a poly(lactic-co-glycolic) acid (PLGA) electrospun membrane loaded with ibuprofen (IBU) was prepared and named EMI. Additionally, Methoxy poly(ethylene glycol)-block-poly(L-valine) (PEG-PLV) was synthesized. bFGF was added to the PEG-PLV solution, a hydrogel containing bFGF (PLVB) was obtained after gelling. PLVB was applied to the surface of EMI, a double-layer composite membrane named EMI-PLVB was obtained. This membrane was used to prevent Achilles tendon adhesion and promote healing. IBU and bFGF in EMI-PLVB were continuously released in vitro. The inflammatory factors at the tendon healing site were significantly reduced, and the production of type I collagen (Col- I) and type III Collagen (Col-III) at the tendon healing site was also increased in vivo. In conclusion, this double-layer composite membrane drug release system can effectively prevent tendon adhesion and promote tendon healing.
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Affiliation(s)
- Zuofa Yan
- Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Liaoning, PR China
| | - Xiangjun Meng
- Ophthalmology Department, Affiliated Zhongshan Hospital of Dalian University, Liaoning 116001, PR China
| | - Yun Su
- Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Liaoning, PR China.
| | - Yiqing Chen
- Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Liaoning, PR China
| | - Lidong Zhang
- Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Liaoning, PR China
| | - Jialu Xiao
- Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Liaoning, PR China
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23
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Hsiao MY, Wu YW, Chen WS, Lin YL, Kuo PL, Wu CH. Pathogenic Hydrogel? A Novel-Entrapment Neuropathy Model Induced by Ultrasound-Guided Perineural Injections. Int J Mol Sci 2021; 22:ijms22073494. [PMID: 33800600 PMCID: PMC8036453 DOI: 10.3390/ijms22073494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 12/20/2022] Open
Abstract
Entrapment neuropathy (EN) is a prevalent and debilitative condition caused by a complex pathogenesis that involves a chronic compression–edema–ischemia cascade and perineural adhesion that results in excessive shear stress during motion. Despite decades of research, an easily accessible and surgery-free animal model mimicking the mixed etiology is currently lacking, thus limiting our understanding of the disease and the development of effective therapies. In this proof-of-concept study, we used ultrasound-guided perineural injection of a methoxy poly(ethylene glycol)-b-Poly(lactide-co-glycoilide) carboxylic acid (mPEG-PLGA-BOX) hydrogel near the rat’s sciatic nerve to induce EN, as confirmed sonographically, electrophysiologically, and histologically. The nerve that was injected with hydrogel appeared unevenly contoured and swollen proximally with slowed nerve conduction velocities across the injected segments, thus showing the compressive features of EN. Histology showed perineural cellular infiltration, deposition of irregular collagen fibers, and a possible early demyelination process, thus indicating the existence of adhesions. The novel method provides a surgery-free and cost-effective way to establish a small-animal model of EN that has mixed compression and adhesion features, thus facilitating the additional elucidation of the pathophysiology of EN and the search for promising treatments.
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Affiliation(s)
- Ming-Yen Hsiao
- Department of Physical Medicine and Rehabilitation, College of Medicine, National Taiwan University, Taipei 10048, Taiwan; (M.-Y.H.); (W.-S.C.); (Y.-L.L.)
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei 10048, Taiwan; (Y.-W.W.); (P.L.-K.)
| | - Ya-Wen Wu
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei 10048, Taiwan; (Y.-W.W.); (P.L.-K.)
| | - Wen-Shiang Chen
- Department of Physical Medicine and Rehabilitation, College of Medicine, National Taiwan University, Taipei 10048, Taiwan; (M.-Y.H.); (W.-S.C.); (Y.-L.L.)
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei 10048, Taiwan; (Y.-W.W.); (P.L.-K.)
| | - Yu-Ling Lin
- Department of Physical Medicine and Rehabilitation, College of Medicine, National Taiwan University, Taipei 10048, Taiwan; (M.-Y.H.); (W.-S.C.); (Y.-L.L.)
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei 10048, Taiwan; (Y.-W.W.); (P.L.-K.)
| | - Po-Ling Kuo
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei 10048, Taiwan; (Y.-W.W.); (P.L.-K.)
- Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chueh-Hung Wu
- Department of Physical Medicine and Rehabilitation, College of Medicine, National Taiwan University, Taipei 10048, Taiwan; (M.-Y.H.); (W.-S.C.); (Y.-L.L.)
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei 10048, Taiwan; (Y.-W.W.); (P.L.-K.)
- Department of Physical Medicine & Rehabilitation, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu 302058, Taiwan
- Correspondence:
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24
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Kong FH, Ye QF, Miao XY, Liu X, Huang SQ, Xiong L, Wen Y, Zhang ZJ. Current status of sorafenib nanoparticle delivery systems in the treatment of hepatocellular carcinoma. Am J Cancer Res 2021; 11:5464-5490. [PMID: 33859758 PMCID: PMC8039945 DOI: 10.7150/thno.54822] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 02/17/2021] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common type of liver cancer and one of the leading causes of cancer-related death worldwide. Advanced HCC displays strong resistance to chemotherapy, and traditional chemotherapy drugs do not achieve satisfactory therapeutic efficacy. Sorafenib is an oral kinase inhibitor that inhibits tumor cell proliferation and angiogenesis and induces cancer cell apoptosis. It also improves the survival rates of patients with advanced liver cancer. However, due to its poor solubility, fast metabolism, and low bioavailability, clinical applications of sorafenib have been substantially restricted. In recent years, various studies have been conducted on the use of nanoparticles to improve drug targeting and therapeutic efficacy in HCC. Moreover, nanoparticles have been extensively explored to improve the therapeutic efficacy of sorafenib, and a variety of nanoparticles, such as polymer, lipid, silica, and metal nanoparticles, have been developed for treating liver cancer. All these new technologies have improved the targeted treatment of HCC by sorafenib and promoted nanomedicines as treatments for HCC. This review provides an overview of hot topics in tumor nanoscience and the latest status of treatments for HCC. It further introduces the current research status of nanoparticle drug delivery systems for treatment of HCC with sorafenib.
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25
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Bellotti E, Schilling AL, Little SR, Decuzzi P. Injectable thermoresponsive hydrogels as drug delivery system for the treatment of central nervous system disorders: A review. J Control Release 2021; 329:16-35. [PMID: 33259851 DOI: 10.1016/j.jconrel.2020.11.049] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/24/2020] [Accepted: 11/24/2020] [Indexed: 12/13/2022]
Abstract
The central nervous system (CNS), consisting of the brain, spinal cord, and retina, superintends to the acquisition, integration and processing of peripheral information to properly coordinate the activities of the whole body. Neurodegenerative and neurodevelopmental disorders, trauma, stroke, and brain tumors can dramatically affect CNS functions resulting in serious and life-long disabilities. Globally, the societal and economic burden associated with CNS disorders continues to grow with the ageing of the population thus demanding for more effective and definitive treatments. Despite the variety of clinically available therapeutic molecules, medical interventions on CNS disorders are mostly limited to treat symptoms rather than halting or reversing disease progression. This is attributed to the complexity of the underlying disease mechanisms as well as to the unique biological microenvironment. Given its central importance, multiple barriers, including the blood brain barrier and the blood cerebrospinal fluid barrier, protect the CNS from external agents. This limits the access of drug molecules to the CNS thus contributing to the modest therapeutic successes. Loco-regional therapies based on the deposition of thermoresponsive hydrogels loaded with therapeutic agents and cells are receiving much attention as an alternative and potentially more effective approach to manage CNS disorders. In this work, the current understanding and challenges in the design of thermoresponsive hydrogels for CNS therapy are reviewed. First, the biological barriers that hinder mass and drug transport to the CNS are described, highlighting the distinct features of each barrier. Then, the realization, characterization and biomedical application of natural and synthetic thermoresponsive hydrogels are critically presented. Advantages and limitations of each design and application are discussed with the objective of identifying general rules that could enhance the effective translation of thermoresponsive hydrogel-based therapies for the treatment of CNS disorders.
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Affiliation(s)
- Elena Bellotti
- Laboratory of Nanotechnology for Precision Medicine, Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy.
| | - Andrea L Schilling
- Department of Chemical Engineering, University of Pittsburgh, 427 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261, USA
| | - Steven R Little
- Department of Chemical Engineering, University of Pittsburgh, 427 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261, USA; Department of Bioengineering, University of Pittsburgh, 302 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15216, USA; Department of Clinical and Translational Science, University of Pittsburgh, Forbes tower, Suite 7057, Pittsburgh, PA 15213, USA; McGowan Institute of Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA, 15219, USA; Department of Immunology, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA, 15213, USA; Department of Pharmaceutical Science, University of Pittsburgh, 3501 Terrace Street, Pittsburgh, PA, 15213, USA
| | - Paolo Decuzzi
- Laboratory of Nanotechnology for Precision Medicine, Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy
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26
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Xu L, Bai X, Yang J, Li J, Xing J, Yuan H, Xie J, Li J. Preparation and characterisation of a gellan gum-based hydrogel enabling osteogenesis and inhibiting Enterococcus faecalis. Int J Biol Macromol 2020; 165:2964-2973. [PMID: 33086112 DOI: 10.1016/j.ijbiomac.2020.10.083] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/01/2020] [Accepted: 10/10/2020] [Indexed: 02/05/2023]
Abstract
Infections are the leading cause of failure of osteogenic material implantation. Antibiotic treatment, treatment with bone cement, or collagen sponge placement can result in drug resistance and difficulties in operation. To address this, gellan gum (GG) was selected in this study and prepared as an injectable hydrogel containing chlorhexidine (CHX) and nanohydroxyapatite (nHA) that overcomes these intractable problems. Scanning electron microscopy and micro-computed tomography revealed a three-dimensional polymeric network of the hydrogel. The hydrogel had excellent biocompatibility, as detected by cell counting kit-8 and Live/Dead assay. Bone marrow mesenchymal stem cells could be encapsulated into the network, showing that the structure was suitable for cell growth. Additionally, loading the hydrogel with nHA improved its mechanical, biodegradable, and osteogenic properties. Quantitative alkaline phosphatase and Alizarin Red S staining validated its osteogenic ability. Furthermore, antibacterial activity assessment showed that the hydrogel loaded with 50 μg/mL CHX inhibited Enterococcus faecalis in a concentration-dependent manner. Thus, we report an injectable GG-based hydrogel with superior antibacterial effect against E. faecalis and osteogenesis, which holds promise for treating infectious bone defects caused by refractory periradicular periodontitis.
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Affiliation(s)
- Laijun Xu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, PR China
| | - Xuan Bai
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, PR China
| | - Jiaojiao Yang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, PR China
| | - Jianshu Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, PR China; College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Jiaqi Xing
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - He Yuan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, PR China.
| | - Jing Xie
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, PR China.
| | - Jiyao Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, PR China.
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Cui L, Xiang S, Chen D, Fu R, Zhang X, Chen J, Wang X. A novel tissue-engineered bone graft composed of silicon-substituted calcium phosphate, autogenous fine particulate bone powder and BMSCs promotes posterolateral spinal fusion in rabbits. J Orthop Translat 2020; 26:151-161. [PMID: 33437634 PMCID: PMC7773983 DOI: 10.1016/j.jot.2020.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 06/10/2020] [Accepted: 06/15/2020] [Indexed: 11/15/2022] Open
Abstract
Background Autogenous bone graft is the gold standard bone grafting substrate available in spinal fusion because of its osteoconductive, osteogenic, and osteoinductive properties. However, several shortcomings including bleeding, infection, chronic pain, and nerve injury are known to be associated with the procedure. Bone tissue engineering has emerged as an alternative therapeutic strategy for bone grafts. New materials have been developed and tested that can substitute for the autogenous bone grafts used in the spinal fusion. The purpose of this study is to evaluate the role of a novel tissue-engineered bone graft with silicon-substituted calcium phosphate (Si-CaP), autogenous fine particulate bone powder (AFPBP), and bone marrow mesenchymal stem cells (BMSCs) using a rabbit posterolateral lumbar fusion model based on bone tissue engineering principles. The application of this graft can represent a novel choice for autogenous bone to reduce the amount of autogenous bone and promote spinal fusion. Methods BMSCs from New Zealand white rabbits were isolated and cultured in vitro. Then, BMSCs were marked by the cell tracker chloromethyl-benzamidodialkylcarbocyanine (CM-Dil). A total of 96 New Zealand White rabbits were randomly divided into four groups: (a) AFPBP, (b) Si-CaP, (c) Si-CaP/AFPBP, (d) Si-CaP/AFPBP/BMSCs.The rabbits underwent bilateral posterolateral spine arthrodesis of the L5-L6 intertransverse processes using different grafts. Spinal fusion and bone formation were evaluated at 4, 8, and 12 weeks after surgery by manual palpation, radiology, micro-computed tomography (micro-CT), histology, and scanning electronic microscopy (SEM). Results The rate of fusion by manual palpation was higher in the Si-CaP/AFPBP/BMSCs group than the other groups at 8 weeks. The fusion rates in the Si-CaP/AFPBP/BMSCs and the AFPBP groups both reached 100%, which was higher than the Si-CaP/AFPBP group (62.5%) (P > 0.05) and Si-CaP group (37.5%) (P < 0.05) at 12 weeks. New bone formation was observed in all groups after implantation by radiology and micro-CT. The radiographic and CT scores increased in all groups from 4 to 12 weeks, indicating a time-dependent osteogenetic process. The Si-CaP/AFPBP/BMSCs group showed a larger amount of newly formed bone than the Si-CaP/AFPBP and Si-CaP groups at 12 weeks. Bone formation in the Si-CaP/AFPBP/BMSCs group was similar to the AFPBP group. Histology showed that new bone formation continued and increased along with the degradation and absorption of Si-CaP and AFPBP from 4 to 12 weeks in the Si-CaP, Si-CaP/AFPBP, and Si-CaP/AFPBP/BMSCs groups. At 4 weeks, a higher proportion of bone was detected in the AFPBP group (23.49%) compared with the Si-CaP/AFPBP/BMSCs group (14.66%, P < 0.05). In the Si-CaP/AFPBP/BMSCs group at 8 weeks, the area percentage of new bone formation was 28.56%, which was less than the AFPBP group (33.21%, P < 0.05). No difference in bone volume was observed between the Si-CaP/AFPBP/BMSCs group (44.39%) and AFPBP group (45.06%) at 12 weeks (P > 0.05). At 12 weeks, new trabecular were visible in the Si-CaP/AFPBP/BMSCs group by SEM. CM-Dil-positive cells were observed at all stages. Compared with histological images, BMSCs participate in various stages of osteogenesis by transforming into osteoblasts, chondrocytes, and osteocytes. Conclusion This study demonstrated for the first time that Si-CaP/AFPBP/BMSCs is a novel tissue-engineered bone graft with excellent bioactivity, biocompatibility, and biodegradability. The graft could reduce the amount of autogenous bone and promote spinal fusion in a rabbit posterolateral lumbar fusion model, representing a novel alternative to autogenous bone. The Translational potential of this article The translational potential of this article lies in that this graft will be a novel spinal fusion graft with great potential for clinical applications.
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Affiliation(s)
- LiHuang Cui
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - ShouYang Xiang
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - DeChun Chen
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Rui Fu
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xin Zhang
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - JingTao Chen
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - XinTao Wang
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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Recent advances of sorafenib nanoformulations for cancer therapy: Smart nanosystem and combination therapy. Asian J Pharm Sci 2020; 16:318-336. [PMID: 34276821 PMCID: PMC8261086 DOI: 10.1016/j.ajps.2020.07.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 07/01/2020] [Accepted: 07/25/2020] [Indexed: 12/21/2022] Open
Abstract
Sorafenib, a molecular targeted multi-kinase inhibitor, has received considerable interests in recent years due to its significant profiles of efficacy in cancer therapy. However, poor pharmacokinetic properties such as limited water solubility, rapid elimination and metabolism lead to low bioavailability, restricting its further clinical application. Over the past decade, with substantial progress achieved in the development of nanotechnology, various types of smart sorafenib nanoformulations have been developed to improve the targetability as well as the bioavailability of sorafenib. In this review, we summarize various aspects from the preparation and characterization to the evaluation of antitumor efficacy of numerous stimuli-responsive sorafenib nanodelivery systems, particularly with emphasis on their mechanism of drug release and tumor microenvironment response. In addition, this review makes great effort to summarize the nanosystem-based combination therapy of sorafenib with other antitumor agents, which can provide detailed information for further synergistic cancer therapy. In the final section of this review, we also provide a detailed discussion of future challenges and prospects of designing and developing ideal sorafenib nanoformulations for clinical cancer therapy.
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Glaeser JD, Salehi K, Kanim LE, Ju DG, Hyuk Yang J, Behrens PH, Eberlein SA, Metzger MF, Arabi Y, Stefanovic T, Sheyn D, W Bae H. Electrospun, synthetic bone void filler promotes human MSC function and BMP-2 mediated spinal fusion. J Biomater Appl 2020; 35:532-543. [PMID: 32627633 DOI: 10.1177/0885328220937999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Synthetic bone grafts are often used to achieve a well-consolidated fusion mass in spinal fusion procedures. These bone grafts function as scaffolds, and ideally support cell function and facilitate protein binding. OBJECTIVE The aim was to characterize an electrospun, synthetic bone void filler (Reb) for its bone morphogenetic protein (BMP)-2 release properties and support of human mesenchymal stem cell (hMSC) function in vitro, and its efficacy in promoting BMP-2-/bone marrow aspirate-(BMA)-mediated posterolateral spinal fusion (PLF) in vivo. METHODS BMP-2 release kinetics from Reb versus standard absorbable collagen sponge (ACS) was determined. hMSC adhesion and proliferation on Reb was tested using cell counting, fluorescence microscopy and MTS. Cell osteogenic differentiation was quantified via cellular alkaline phosphatase (ALP) activity. For in vivo analysis, 18 Lewis rats were treated during PLF surgery with the following groups: (I) Reb + BMA, (II) Reb + BMA + BMP-2 and (III) BMA. A safe, minimally effective dose of BMP-2 was used. Fusion consolidation was followed for 3 months using radiography and micro-CT. After sacrifice, fusion rate and biomechanical stiffness was determined using manual palpation, biomechanical tests and histology. RESULTS In vitro, BMP-2 release kinetics were similar between Reb versus ACS. MSC proliferation and differentiation were increased in the presence of Reb. At 3 months post-surgery, fusion rates were 29% (group I), 100% (group II), and 0% (group III). Biomechanical stiffness was higher in group II versus I. Micro-CT showed an increased bone volume and connectivity density in group II. Trabecular thickness was increased in group I versus II. H&E staining showed newly formed bone in group II only. CONCLUSIONS Reb possesses a high protein binding affinity and promotes hMSC function. Combination with BMA and minimal dose BMP-2 allowed for 100% bone fusion in vivo. This data suggests that a minimally effective dose of BMP-2 can be used when combined with Reb.
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Affiliation(s)
- Juliane D Glaeser
- Orthopedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Khosrowdad Salehi
- Orthopedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Linda Ea Kanim
- Orthopedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Derek G Ju
- Orthopedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Jae Hyuk Yang
- Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Phillip H Behrens
- Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Samuel A Eberlein
- Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Melodie F Metzger
- Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Yasaman Arabi
- Orthopedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Tina Stefanovic
- Orthopedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Dmitriy Sheyn
- Orthopedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Hyun W Bae
- Department of Orthopedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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Zhang F, King MW. Biodegradable Polymers as the Pivotal Player in the Design of Tissue Engineering Scaffolds. Adv Healthc Mater 2020; 9:e1901358. [PMID: 32424996 DOI: 10.1002/adhm.201901358] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 04/03/2020] [Indexed: 01/15/2023]
Abstract
Biodegradable polymers play a pivotal role in in situ tissue engineering. Utilizing various technologies, researchers have been able to fabricate 3D tissue engineering scaffolds using biodegradable polymers. They serve as temporary templates, providing physical and biochemical signals to the cells and determining the successful outcome of tissue remodeling. Furthermore, a biodegradable scaffold also presents the fourth dimension for tissue engineering, namely time. The properties of the biodegradable polymer change over time, presenting continuously changing features during the degradation process. These changes become more complicated when different materials are combined together to fabricate a composite or heterogeneous scaffold. This review undertakes a systematic analysis of the basic characteristics of biodegradable polymers and describe recent advances in making composite biodegradable scaffolds for in situ tissue engineering and regenerative medicine. The interaction between implanted biodegradable biomaterials and the in vivo environment are also discussed, including the properties and functional changes of the degradable scaffold, the local effect of degradation on the contiguous tissue and their evaluation using both in vitro and in vivo models.
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Affiliation(s)
- Fan Zhang
- Wilson College of TextilesNorth Carolina State University Raleigh NC 27606 USA
| | - Martin W. King
- Wilson College of TextilesNorth Carolina State University Raleigh NC 27606 USA
- College of TextilesDonghua University Songjiang District Shanghai 201620 China
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Wu CH, Sun MK, Kung Y, Wang YC, Chen SL, Shen HH, Chen WS, Young TH. One injection for one-week controlled release: In vitro and in vivo assessment of ultrasound-triggered drug release from injectable thermoresponsive biocompatible hydrogels. ULTRASONICS SONOCHEMISTRY 2020; 62:104875. [PMID: 31796329 DOI: 10.1016/j.ultsonch.2019.104875] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 10/17/2019] [Accepted: 11/12/2019] [Indexed: 05/19/2023]
Abstract
Episodic release of bioactive compounds is often necessary for appropriate biological effects under specific physiological conditions. Here, we aimed to develop an injectable, biocompatible, and thermosensitive hydrogel system for ultrasound (US)-triggered drug release. An mPEG-PLGA-BOX block copolymer hydrogel was synthesized. The viscosity of 15 wt% hydrogel is 0.03 Pa*s at 25 °C (liquid form) and 34.37 Pa*s at 37 °C (gel form). Baseline and US-responsive in vitro release profile of a small molecule (doxorubicin) and that of a large molecule (FITC-dextran), from the hydrogel, was tested. A constant baseline release was observed in vitro for 7 d. When triggered by US (1 MHz, continuous, 0.4 W/cm2), the release rate increased by approximately 70 times. Without US, the release rate returned to baseline. Baseline and US-responsive in vivo release profile of doxorubicin was tested by subcutaneous injection in the back of mice and rats. Following injection into the subcutaneous layer, in vivo results also suggested that the hydrogels remained in situ and provided a steady release for at least 7 d; in the presence of the US-trigger, in vivo release from the hydrogel increased by approximately 10 times. Therefore, the mPEG-PLGA-BOX block copolymer hydrogel may serve as an injectable, biocompatible, and thermosensitive hydrogel system that is applicable for US-triggered drug release.
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Affiliation(s)
- Chueh-Hung Wu
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan; Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming-Kuan Sun
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi Kung
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan
| | - Yu-Chi Wang
- Biomaterials Research and Development Department, Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Sen-Lu Chen
- Biomaterials Research and Development Department, Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Hsin-Hsin Shen
- Biomaterials Research and Development Department, Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Wen-Shiang Chen
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan.
| | - Tai-Horng Young
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan.
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32
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Chen Y, Shi J, Zhang Y, Miao J, Zhao Z, Jin X, Liu L, Yu L, Shen C, Ding J. An injectable thermosensitive hydrogel loaded with an ancient natural drug colchicine for myocardial repair after infarction. J Mater Chem B 2020; 8:980-992. [PMID: 31930242 DOI: 10.1039/c9tb02523e] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Localized administration of anti-inflammatory agents benefits patients after myocardial infarction (MI) by repressing/modulating inflammatory response of the MI region and thus accelerating repair of the impaired tissues. Colchicine (Col), an ancient natural drug, has excellent anti-inflammatory effects; however, its utilization is strictly limited due to its severe systemic toxicity and narrow therapeutic window. In this study, we developed an intramyocardial delivery system of Col using an injectable, thermosensitive poly(lactide-co-glycolide)-poly(ethylene glycol)-poly(lactide-co-glycolide) (PLGA-PEG-PLGA) polymer hydrogel as the vehicle for the treatment of MI while minimizing its systemic toxicity. The aqueous PLGA-PEG-PLGA solution loaded with Col (Col@Gel) underwent a sol-gel transition at 35 °C and maintained a gel state at body temperature. Col was released from the Col@Gel in an initial burst followed by a sustained release manner for over 8 days. The in vitro cell tests showed that the Col@Gel system significantly inhibited macrophage proliferation and migration. In a mouse model of MI, a single intramyocardial administration of the Col@Gel effectively alleviated cardiac inflammation, inhibited myocardial apoptosis and fibrosis, improved cardiac function and structure, and increased mouse survival without inducing severe systemic toxicity, which was observed following intraperitoneal administration of Col solution. These results suggested that the Col@Gel system is a reliable drug delivery system for the sustained local release of Col and has great potential as an anti-inflammatory therapy for the treat of MI.
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Affiliation(s)
- Yu Chen
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Jiayue Shi
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China.
| | - Yaping Zhang
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Jiajun Miao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China.
| | - Zhe Zhao
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Xian Jin
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Liang Liu
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China. and Zhuhai Fudan Innovation Institute, Zhuhai, Guangdong 51900, China
| | - Chengxing Shen
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China. and Zhuhai Fudan Innovation Institute, Zhuhai, Guangdong 51900, China
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Ji X, Yuan X, Ma L, Bi B, Zhu H, Lei Z, Liu W, Pu H, Jiang J, Jiang X, Zhang Y, Xiao J. Mesenchymal stem cell-loaded thermosensitive hydroxypropyl chitin hydrogel combined with a three-dimensional-printed poly(ε-caprolactone) /nano-hydroxyapatite scaffold to repair bone defects via osteogenesis, angiogenesis and immunomodulation. Theranostics 2020; 10:725-740. [PMID: 31903147 PMCID: PMC6929983 DOI: 10.7150/thno.39167] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/08/2019] [Indexed: 12/01/2022] Open
Abstract
Chitin-derived hydrogels are commonly used in bone regeneration because of their high cell compatibility; however, their poor mechanical properties and little knowledge of the interaction between the materials and host cells have limited their practical application. Methods: To evaluate osteoinductivity and enhance the mechanical properties of a newly synthesized thermosensitive hydroxypropyl chitin hydrogel (HPCH), a mesenchymal stem cell (MSC)-encapsulated HPCH was infused into a three-dimensional-printed poly (ε-caprolactone) (PCL)/ nano-hydroxyapatite (nHA) scaffold to form a hybrid scaffold. The mechanical properties and cell compatibility of the scaffold were tested. The interaction between macrophages and scaffold for angiogenesis and osteogenesis were explored in vitro and in vivo. Results: The hybrid scaffold showed improved mechanical properties and high cell viability. When MSCs were encapsulated in HPCH, osteo-differentiation was promoted properly via endochondral ossification. The co-culture experiments showed that the hybrid scaffold facilitated growth factor secretion from macrophages, thus promoting vascularization and osteoinduction. The Transwell culture proved that MSCs modulated the inflammatory response of HPCH. Additionally, subcutaneous implantation of MSC-encapsulated HPCH confirmed M2 activation. In situ evaluation of calvarial defects confirmed that the repair was optimal in the MSC-loaded HPCH + PCL/nHA group. Conclusions: PCL/nHA + HPCH hybrid scaffolds effectively promoted vascularization and osteoinduction via osteogenesis promotion and immunomodulation, which suggests promising applications for bone regeneration.
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Affiliation(s)
- Xiongfa Ji
- Department of Orthopedics, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, PR China
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xi Yuan
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Limin Ma
- Department of Orthopedics, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, PR China
| | - Bo Bi
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Hao Zhu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zehua Lei
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wenbin Liu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - HongXu Pu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jiawei Jiang
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Yu Zhang
- Department of Orthopedics, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, PR China
| | - Jun Xiao
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
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Guo F, Fu Q, Jin C, Ji X, Yan Q, Yang Q, Wu D, Gao Y, Hong W, Li A, Yang G. Dual functional matrix metalloproteinase-responsive curcumin-loaded nanoparticles for tumor-targeted treatment. Drug Deliv 2019; 26:1027-1038. [PMID: 31691601 PMCID: PMC6844435 DOI: 10.1080/10717544.2019.1676843] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The limitations of anticancer drugs, including poor tumor targeting and weak uptake efficiency, are important factors affecting tumor therapy. According to characteristics of the tumor microenvironment, in this study, we aimed to synthesize matrix metalloproteinase (MMP)-responsive curcumin (Cur)-loaded nanoparticles (Cur-P-NPs) based on amphiphilic block copolymer (MePEG-peptide-PET-PCL) with MMP-cleavable peptide (GPLGIAGQ) and penetrating peptide (r9), modified to improve tumor targeting and cellular uptake. The average size of Cur-P-NPs was 176.9 nm, with a zeta potential of 8.1 mV, and they showed drug entrapment efficiency and a loading capacity of 87.07% ± 0.63% and 7.44% ± 0.16%, respectively. Furthermore, Cur release from Cur-P-NPs was sustained for 144 h at pH 7.4, and the release rate was accelerated under enzyme reaction condition. The MTT assay demonstrated that free P-NPs had favorable biosafety, and the anti-proliferative activity of Cur-P-NPs was positively correlated with Cur concentration in MCF-7 cells. Additionally, the results of cellular uptake, in vivo pharmacokinetics, and biodistribution showed that Cur-P-NPs had a good effect on cellular uptake and tumor targeting, resulting in the best bioavailability in tumor therapy. Therefore, Cur-P-NPs, as a promising drug delivery system, might lead to a new and efficient route for targeted therapy in clinical practice.
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Affiliation(s)
- Fangyuan Guo
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Qiafan Fu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Chenhao Jin
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Xugang Ji
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Qinying Yan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Qingliang Yang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Danjun Wu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Ying Gao
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Weiyong Hong
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China.,Taizhou Municipal Hospital of Zhejiang Province, Taizhou, China
| | - Aiqin Li
- Zhejiang Share Bio-pharm Co. Ltd, Hangzhou, China
| | - Gensheng Yang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
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Self-assembling in situ gel based on lyotropic liquid crystals containing VEGF for tissue regeneration. Acta Biomater 2019; 99:84-99. [PMID: 31521813 DOI: 10.1016/j.actbio.2019.09.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 09/02/2019] [Accepted: 09/10/2019] [Indexed: 12/15/2022]
Abstract
Current tissue-regenerative biomaterials confront two critical issues: the uncontrollable delivery capacity of vascular endothelial growth factor (VEGF) for adequate vascularization and the poor mechanical properties of the system for tissue regeneration. To overcome these two issues, a self-assembling in situ gel based on lyotropic liquid crystals (LLC) was developed. VEGF-LLC was administrated as a precursor solution that would self-assemble into an in situ gel with well-defined internal inverse bicontinuous cubic phases when exposed to physiological fluid at a defect site. The inverse cubic phase with a 3D bicontinuous water channel enabled a 7-day sustained release of VEGF. The release profile of VEGF-LLC was controlled using octyl glucoside (OG) as a hydration-modulating agent, which could enlarge the water channel, yielding a 2-fold increase in water channel size and a 7-fold increase in VEGF release. For the mechanical properties, the elastic modulus was found to decrease from ∼100 kPa to ∼1.2 kPa, which might be more favorable for angiogenesis. Furthermore, the self-recovery ability of the VEGF-LLC gel was confirmed by quick recovery of the inner network in step-strain measurements. In vitro, VEGF-LLC considerably promoted the proliferation, migration, and tube formation of human umbilical vein endothelial cells (HUVECs) as compared to free VEGF (p < 0.05). Furthermore, angiogenesis was successfully induced in rats after subcutaneous injection of VEGF-LLC. The self-assembling LLC gel showed satisfactory degradability and mild inflammatory response with little impact on the surrounding tissue. The controllable release profile and unique mechanical properties of VEGF-LLC offer a new approach for tissue regeneration. STATEMENT OF SIGNIFICANCE: The potential clinical use of currently available biomaterials in tissue regeneration is limited by their uncontrollable drug delivery capacity and poor mechanical properties. Herein, a self-assembling in situ gel based on lyotropic liquid crystals (LLC) for induced angiogenesis was developed. The results showed that the addition of octyl glucoside (OG) could change the water channel size of LLC, which enabled the LLC system to release VEGF in a sustained manner and to possess a suitable modulus to favor angiogenesis simultaneously. Moreover, the self-recovery capability allowed the gel to match the deformation of surrounding tissues during body motion to maintain its properties and reduce discomfort. In vivo, angiogenesis was induced by VEGF-LLC 14 days after administering subcutaneous injection. These results highlight the potential of LLC as a promising sustained protein drug delivery system for vascular formation and tissue regeneration.
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Gaihre B, Unagolla JM, Liu J, Ebraheim NA, Jayasuriya AC. Thermoresponsive Injectable Microparticle-Gel Composites with Recombinant BMP-9 and VEGF Enhance Bone Formation in Rats. ACS Biomater Sci Eng 2019; 5:4587-4600. [PMID: 33448832 PMCID: PMC10742348 DOI: 10.1021/acsbiomaterials.9b00082] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bone morphogenetic protein-9 (BMP-9) has been shown to be the most osteogenic BMP. Most of these experiments, however, involve an adenovirus-transfection strategy. Here, we used the scaffold-based strategy to study the bone forming ability of recombinant BMP-9 combined with vascular endothelial growth factor (VEGF). A robust, injectable, multicomponent-releasing scaffold in the form of a composite gel was developed by combining chitosan microparticles (MPs) with thermosensitive gel (MPs-gel). The MPs acted as the carriers for BMP-9 and the gel was loaded with VEGF. The developed gel consisted of hydrophobic chains of methyl cellulose (MC) and the cross-linked structures of alginate (Alg) and calcium. Gelation was achieved at physiological temperature and thus facilitated the injection and localization of MPs enabling an increased efficacy of incorporated growth factors at the target site. A release profile of incorporated growth factors over a two-week period showed higher release of VEGF at each time point compared to that of BMP-9. Human mesenchymal stem cells (hMSCs) encapsulated within the MPs-gel maintained their viability. BMP-9 enhanced the proliferation of hMSCs along the surface of MPs. Furthermore, BMP-9 potently induced the osteogenic differentiation of encapsulated hMSCs elucidated by the increased alkaline phosphatase (ALP) activity and the higher expression of ALP, collagen 1, and osteocalcin genes. In addition, in vivo experiments demonstrated that MPs-gel with the combination of BMP-9-VEGF could significantly enhance both subcutaneous and cranial bone formation (p < 0.05). Taken together, the results here strongly suggest that BMP-9-VEGF incorporated MPs-gel holds promise as an injectable bone tissue engineering platform.
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Affiliation(s)
- Bipin Gaihre
- Department of Bioengineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Janitha M. Unagolla
- Department of Bioengineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Jiayong Liu
- Department of Orthopaedic Surgery, University of Toledo Medical Center, 3000 Arlington Avenue, Toledo, Ohio 43614, United States
| | - Nabil A. Ebraheim
- Department of Orthopaedic Surgery, University of Toledo Medical Center, 3000 Arlington Avenue, Toledo, Ohio 43614, United States
| | - Ambalangodage C. Jayasuriya
- Department of Bioengineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
- Department of Orthopaedic Surgery, University of Toledo Medical Center, 3000 Arlington Avenue, Toledo, Ohio 43614, United States
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37
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Thermosensitive hydrogels for sustained-release of sorafenib and selenium nanoparticles for localized synergistic chemoradiotherapy. Biomaterials 2019; 216:119220. [DOI: 10.1016/j.biomaterials.2019.05.031] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 05/13/2019] [Accepted: 05/18/2019] [Indexed: 12/17/2022]
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Dwyer DB, Liu J, Gomez JC, Tovar TM, Davoodabadi A, Bernier WE, DeCoste JB, Jones WE. Metal Hydroxide/Polymer Textiles for Decontamination of Toxic Organophosphates: An Extensive Study of Wettability, Catalytic Activity, and the Effects of Aggregation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:31378-31385. [PMID: 31368300 DOI: 10.1021/acsami.9b10440] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Electrospun nanofibers (NFs) incorporated with catalytically active components have gained significant interest in chemical protective clothing. This is because of the desirable properties of the NFs combined with decontamination capability of the active component. Here, a series of metal hydroxide catalysts Ti(OH)x, Zr(OH)4, and Ce(OH)4 were incorporated into three different polymer NF systems. These new polymer/metal hydroxide composite NFs were then evaluated for their catalytic activity against a nerve agent simulant. Two methods were utilized to incorporate the metal hydroxides into the NFs. Method one used direct incorporation of Ti(OH)x, Zr(OH)4, and Ce(OH)4 catalysts, whereas method two employed incorporation of Ti(OH)x via a precursor molecule. Composite NFs prepared via method one resulted in greatly improved reaction rates over the respective pure metal hydroxides due to reduced aggregation of catalysts, with polymer/Ce(OH)4 composite NFs having the fastest reaction rates out of method one materials. Interestingly, composite samples prepared by method two yielded the fastest reaction rates overall. This is because of the homogeneous distribution of the metal hydroxide catalyst throughout the NF. This homogeneous distribution created a hydroxyl-decorated NF surface with a greater number of exposed active sites for catalysis. The hydroxyl-decorated NF surface also resulted in an unexpected highly wettable composite NF, which also was found to contribute to the observed reaction rates. These results are not only promising for applications in chemical protective clothing but also show great potential for application in areas which need highly wettable membrane materials. This includes areas such as separators, antifouling membranes, and certain medical applications.
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Affiliation(s)
- Derek B Dwyer
- Binghamton University State University of New York , 4400 Vestal Parkway East , Binghamton 13902 , New York , United States
| | - Jian Liu
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston 60208 , Illinois , United States
| | - Jasmine C Gomez
- State University of New York at Oswego , 7060 Route 104 , Oswego 13126 , New York , United States
| | - Trenton M Tovar
- US Army, Combat Capabilities Development Command Chemical and Biological Center , 5183 Blackhawk Road , Aberdeen Proving Ground 21010 , United States
| | - Ali Davoodabadi
- Binghamton University State University of New York , 4400 Vestal Parkway East , Binghamton 13902 , New York , United States
| | - William E Bernier
- Binghamton University State University of New York , 4400 Vestal Parkway East , Binghamton 13902 , New York , United States
| | - Jared B DeCoste
- US Army, Combat Capabilities Development Command Chemical and Biological Center , 5183 Blackhawk Road , Aberdeen Proving Ground 21010 , United States
| | - Wayne E Jones
- University of New Hampshire , 105 Main Street , Durham 03824 , New Hampshire , United States
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Zhuang Y, Yang X, Li Y, Chen Y, Peng X, Yu L, Ding J. Sustained Release Strategy Designed for Lixisenatide Delivery to Synchronously Treat Diabetes and Associated Complications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:29604-29618. [PMID: 31361112 DOI: 10.1021/acsami.9b10346] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Diabetes and its complications have become a global challenge of public health. Herein, we aimed to develop a long-acting delivery system of lixisenatide (Lixi), a glucose-dependent antidiabetic peptide, based on an injectable hydrogel for the synchronous treatment of type 2 diabetes mellitus (T2DM) and associated complications. Two triblock copolymers, poly(ε-caprolactone-co-glycolic acid)-poly(ethylene glycol)-poly(ε-caprolactone-co-glycolic acid) and poly(d,l-lactic acid-co-glycolic acid)-poly(ethylene glycol)-poly(d,l-lactic acid-co-glycolic acid) possessing temperature-induced sol-gel transitions, were synthesized by us. Compared to the two single-component hydrogels, their 1/1 mixture hydrogel not only maintained the temperature-induced gelation but also exhibited a steadier degradation profile in vivo. Both in vitro and in vivo release studies demonstrated that the mixture hydrogel provided the sustained release of Lixi for up to 9 days, which was attributed to balanced electrostatic interactions between the positive charges in the peptide and the negative charges in the polymer carrier. The hypoglycemic efficacy of Lixi delivered from the mixture hydrogel after a single subcutaneous injection into diabetic db/db mice was comparable to that of twice-daily administrations of Lixi solution for up to 9 days. Furthermore, three successive administrations of the abovementioned gel system within a month significantly increased the plasma insulin level, lowered glycosylated hemoglobin, and improved the pancreatic function of the animals. These results were superior or equivalent to those of twice-daily injections of Lixi solution for 30 days, but the number of injections was markedly reduced from 60 to 3. Finally, an improvement in hyperlipidemia, augmentation of nerve fiber density, and enhancement of motor nerve conduction velocity in the gel formulation-treated db/db mice indicated that the sustained delivery of Lixi arrested and even ameliorated diabetic complications. These findings suggested that the Lixi-loaded mixture hydrogel has great potential for the treatment of T2DM with significant improvements in the health and quality of life of patients.
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Affiliation(s)
- Yaping Zhuang
- 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
| | - Yamin Li
- Department of Orthopaedic Surgery , Shanghai Jiaotong University Affiliated Sixth People's Hospital , Shanghai 200233 , China
| | - Yipei Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Xiaochun Peng
- Department of Orthopaedic Surgery , Shanghai Jiaotong University Affiliated Sixth People's Hospital , Shanghai 200233 , 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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40
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Zhang Z, Wang S, Waterhouse GIN, Zhang Q, Li L. Poly(
N
‐isopropylacrylamide)/mesoporous silica thermosensitive composite hydrogels for drug loading and release. J Appl Polym Sci 2019. [DOI: 10.1002/app.48391] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Zhaofu Zhang
- College of Chemistry and Material ScienceShandong Agricultural University Tai'an 271018 China
| | - Shuo Wang
- College of Chemistry and Material ScienceShandong Agricultural University Tai'an 271018 China
| | | | - Qihai Zhang
- Taian City Central Hospital Tai'an 271000 China
| | - Lifang Li
- College of Chemistry and Material ScienceShandong Agricultural University Tai'an 271018 China
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41
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Guo R, Chen S, Xiao X. Fabrication and characterization of poly (ethylenimine) modified poly (l-lactic acid) nanofibrous scaffolds. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:1523-1541. [PMID: 31359828 DOI: 10.1080/09205063.2019.1648015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Bone tissue engineering aims to construct biological substitutes for repairing bone defects. Nanofibrous (NF) scaffolds are commonly utilized to mimic the extracellular matrix (ECM) environment and promote tissue regeneration in tissue engineering process. Poly (lactic acid) (PLA) has attracted much attention in the field of tissue engineering because of its biocompatibility, biodegradability and so on. However, the intrinsic hydrophobicity and the lacking of active functional groups limit its practical application to some extent. In this study, poly(ethylenimine) (PEI) modified PLLA nanofibrous scaffolds were fabricated in a one step process by aminolysis combined with thermally induced phase separation technique for introducing more functional groups, PEI acting as the modifier. The morphology of PEI-modified PLLA scaffolds prepared under different experimental conditions was analyzed by scanning electron microscope (SEM). The suitable conditions to fabricate scaffolds with a homogeneous nanofibrous structure, good hydrophilicity and excellent mechanical properties were determined according to the results of SEM, water contact angle (WCA) and mechanical properties testing. Besides, Fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance spectroscopy (1H NMR), X-ray Photoelectron Spectroscopy (XPS) and gel permeation chromatography (GPC) were used to confirm the occurrence of the ammonolysis reaction between PLLA and PEI. The in vitro biomineralization study showed that the PEI-modified PLLA scaffolds had a greater ability to induce the formation of apatite in 1.5SBF than PLLA scaffolds, indicating that the bone-bioactivity of PLLA scaffolds was significantly improved after modification with PEI. Furthermore, cell culture assay revealed that MC3T3-E1 osteoblasts exhibited better proliferation performance on the PEI-modified PLLA scaffolds. All the results implied that the synthesized modified PLLA nanofibrous scaffolds may provide promising applications in bone tissue engineering.
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Affiliation(s)
- Rongying Guo
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University , Fuzhou , China
| | - Shunyu Chen
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University , Fuzhou , China
| | - Xiufeng Xiao
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University , Fuzhou , China
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42
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Takahashi R, Miyazako H, Tanaka A, Ueno Y. Dynamic Creation of 3D Hydrogel Architectures via Selective Swelling Programmed by Interfacial Bonding. ACS APPLIED MATERIALS & INTERFACES 2019; 11:28267-28277. [PMID: 31305055 DOI: 10.1021/acsami.9b05552] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The topological features of material surfaces are crucial to the emergence of functions based on characteristic architectures. Among them, the combination of surface architectures and soft materials, which are highly deformable and flexible, has great potential as regards developing functional materials toward providing/enhancing advanced functions such as switchability and variability. Therefore, a simple yet versatile method for creating three-dimensional (3D) architectures based on soft materials is strongly required. In this study, hydrogels are selected as the soft materials and hydrogel film/rigid substrate layer composites are fabricated to obtain a 3D hydrogel architecture based on swelling instability. When a hydrogel film weakly attached to a rigid substrate is exposed to water, swelling-driven compressive stress induces buckle-delamination of the film from the substrate. Utilizing the chemical modification of a rigid substrate and a conventional photolithography technique, the delamination location is successfully controlled, resulting in a high-aspect-ratio folding architecture at an arbitrary position. In addition, we systematically designed the delamination geometry and chemically tuned the swelling ratio of the hydrogel, leading to the discovery of several new morphology transitions and relationships between the morphologies and the controllable parameters. This work provides a new approach to fabricating highly programmable 3D architectures of soft materials.
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Affiliation(s)
- Riku Takahashi
- NTT Basic Research Laboratories, Bio-Medical Informatics Research Center, NTT Corporation , 3-1 Morinosato-Wakamiya , Atsugi , Kanagawa 243-0198 , Japan
| | - Hiroki Miyazako
- NTT Basic Research Laboratories, Bio-Medical Informatics Research Center, NTT Corporation , 3-1 Morinosato-Wakamiya , Atsugi , Kanagawa 243-0198 , Japan
| | - Aya Tanaka
- NTT Basic Research Laboratories, Bio-Medical Informatics Research Center, NTT Corporation , 3-1 Morinosato-Wakamiya , Atsugi , Kanagawa 243-0198 , Japan
| | - Yuko Ueno
- NTT Basic Research Laboratories, Bio-Medical Informatics Research Center, NTT Corporation , 3-1 Morinosato-Wakamiya , Atsugi , Kanagawa 243-0198 , Japan
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43
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Song Y, Wang F, Lu G, Zhou L, Yang Q. Preparation of PEI nanofiber membrane based on
in situ
and solution crosslinking technology and their adsorption properties. J Appl Polym Sci 2019. [DOI: 10.1002/app.48279] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yan Song
- College of Materials Science and EngineeringJilin Institute of Chemical Technology Jilin 132022 People's Republic of China
| | - Fang‐Fei Wang
- College of Materials Science and EngineeringJilin Institute of Chemical Technology Jilin 132022 People's Republic of China
| | - Guan‐Xiu Lu
- College of ChemistryJilin University Changchun 130012 People's Republic of China
| | - Lin‐Yuan Zhou
- College of Materials Science and EngineeringJilin Institute of Chemical Technology Jilin 132022 People's Republic of China
| | - Qing‐Biao Yang
- College of ChemistryJilin University Changchun 130012 People's Republic of China
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44
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Shi C, Xi S, Han Y, Zhang H, Liu J, Li Y. Structure, rheology and electrospinning of zein and poly(ethylene oxide) in aqueous ethanol solutions. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.07.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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45
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Kadavil H, Zagho M, Elzatahry A, Altahtamouni T. Sputtering of Electrospun Polymer-Based Nanofibers for Biomedical Applications: A Perspective. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E77. [PMID: 30626067 PMCID: PMC6359597 DOI: 10.3390/nano9010077] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/08/2018] [Accepted: 11/13/2018] [Indexed: 12/22/2022]
Abstract
Electrospinning has gained wide attention recently in biomedical applications. Electrospun biocompatible scaffolds are well-known for biomedical applications such as drug delivery, wound dressing, and tissue engineering applications. In this review, the synthesis of polymer-based fiber composites using an electrospinning technique is discussed. Formerly, metal particles were then deposited on the surface of electrospun fibers using sputtering technology. Key nanometals for biomedical applications including silver and copper nanoparticles are discussed throughout this review. The formulated scaffolds were found to be suitable candidates for biomedical uses such as antibacterial coatings, surface modification for improving biocompatibility, and tissue engineering. This review briefly mentions the characteristics of the nanostructures while focusing on how nanostructures hold potential for a wide range of biomedical applications.
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Affiliation(s)
- Hana Kadavil
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Moustafa Zagho
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Ahmed Elzatahry
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Talal Altahtamouni
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, P.O. Box 2713, Doha, Qatar.
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46
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Shang Y, Wang Z, Zhang R, Li X, Zhang S, Gao J, Li X, Yang Z. A novel thermogel system of self-assembling peptides manipulated by enzymatic dephosphorylation. Chem Commun (Camb) 2019; 55:5123-5126. [DOI: 10.1039/c9cc00401g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A novel thermogel system of self-assembling peptides was created by enzyme-instructed self-assembly (EISA), which was useful for 3D cell culture.
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Affiliation(s)
- Yuna Shang
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Zhongyan Wang
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Renshu Zhang
- Department Institute of Biomedical Engineering
- School of Ophthalmology & Optometry and Eye Hospital
- Wenzhou Medical University
- Wenzhou 325027
- P. R. China
| | - Xinxin Li
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Shuhao Zhang
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Jie Gao
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Xingyi Li
- Department Institute of Biomedical Engineering
- School of Ophthalmology & Optometry and Eye Hospital
- Wenzhou Medical University
- Wenzhou 325027
- P. R. China
| | - Zhimou Yang
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
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47
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Zhong L, Qu Y, Shi K, Chu B, Lei M, Huang K, Gu Y, Qian Z. Biomineralized polymer matrix composites for bone tissue repair: a review. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9324-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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48
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Tan GZ, Zhou Y. Tunable 3D Nanofiber Architecture of Polycaprolactone by Divergence Electrospinning for Potential Tissue Engineering Applications. NANO-MICRO LETTERS 2018; 10:73. [PMID: 30417005 PMCID: PMC6208785 DOI: 10.1007/s40820-018-0226-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 10/05/2018] [Indexed: 05/27/2023]
Abstract
The creation of biomimetic cell environments with micro and nanoscale topographical features resembling native tissues is critical for tissue engineering. To address this challenge, this study focuses on an innovative electrospinning strategy that adopts a symmetrically divergent electric field to induce rapid self-assembly of aligned polycaprolactone (PCL) nanofibers into a centimeter-scale architecture between separately grounded bevels. The 3D microstructures of the nanofiber scaffolds were characterized through a series of sectioning in both vertical and horizontal directions. PCL/collagen (type I) nanofiber scaffolds with different density gradients were incorporated in sodium alginate hydrogels and subjected to elemental analysis. Human fibroblasts were seeded onto the scaffolds and cultured for 7 days. Our studies showed that the inclination angle of the collector had significant effects on nanofiber attributes, including the mean diameter, density gradient, and alignment gradient. The fiber density and alignment at the peripheral area of the 45°-collector decreased by 21% and 55%, respectively, along the z-axis, while those of the 60°-collector decreased by 71% and 60%, respectively. By altering the geometry of the conductive areas on the collecting bevels, polyhedral and cylindrical scaffolds composed of aligned fibers were directly fabricated. By using a four-bevel collector, the nanofibers formed a matrix of microgrids with a density of 11%. The gradient of nitrogen-to-carbon ratio in the scaffold-incorporated hydrogel was consistent with the nanofiber density gradient. The scaffolds provided biophysical stimuli to facilitate cell adhesion, proliferation, and morphogenesis in 3D.
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Affiliation(s)
- George Z Tan
- Department of Industrial, Manufacturing and Systems Engineering, Texas Tech University, Lubbock, TX, USA.
| | - Yingge Zhou
- Department of Industrial, Manufacturing and Systems Engineering, Texas Tech University, Lubbock, TX, USA
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Luan J, Zhang Z, Shen W, Chen Y, Yang X, Chen X, Yu L, Sun J, Ding J. Thermogel Loaded with Low-Dose Paclitaxel as a Facile Coating to Alleviate Periprosthetic Fibrous Capsule Formation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:30235-30246. [PMID: 30102023 DOI: 10.1021/acsami.8b13548] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Medical-grade silicones as implants have been utilized for decades. However, the postoperative complications, such as capsular formation and contracture, have not yet been fully controlled and resolved. The aim of the present study is to elucidate whether the capsular formation can be alleviated by local and sustained delivery of low-dose paclitaxel (PTX) during the critical phase after the insertion of silicone implants. A biocompatible and thermogelling poly(lactic acid- co-glycolic acid)- b-poly(ethylene glycol)- b-poly(lactic acid- co-glycolic acid) triblock copolymer was synthesized by us. The micelles formed by the amphiphilic polymers in water could act as a reservoir for the solubilization of PTX, a very hydrophobic drug. The concentrated polymer aqueous solution containing PTX exhibited a sol-gel transition upon heating and formed a thermogel depot at body temperature. In vitro release tests demonstrated that the entrapped microgram-level PTX displayed a sustained release manner up to 57 days without a significant initial burst effect. Customized silicone implants coated with the PTX-loaded thermogels at various drug concentrations were inserted into the pockets of the subpanniculus carnosus plane of rats. The histological observations performed 1 month postoperation showed that the sustained release of PTX with an appropriate dose significantly reduced the peri-implant capsule thickness, production and deposition of collagen, and expression of contracture-mediating factors compared with bare silicone implants. More importantly, such an optimum dose had an excellent repeatability for the suppression of the capsular formation. Therefore, this study provides a strategic foothold regarding the sustained release of low-dose PTX to alleviate fibrotic capsule formation after implantation, and the microgram-level PTX-loaded thermogel holds great potential as an "all-purpose antifibrosis coating" for veiling the surfaces of various implantable medical devices.
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Affiliation(s)
- Jiabin Luan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Zheng Zhang
- Department of Breast Surgery, Obstetrics and Gynecology Hospital , Fudan University , Shanghai 200011 , China
| | - Wenjia Shen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Yipei Chen
- 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
| | - Xiaobin Chen
- 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
| | - Jian Sun
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
- Department of Breast Surgery, Obstetrics and Gynecology Hospital , Fudan University , Shanghai 200011 , China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
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Physical Crosslinked Poly(N-isopropylacrylamide)/Nano-Hydroxyapatite Thermosensitive Composite Hydrogels. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0893-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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