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Bonetti L, Borsacchi S, Soriente A, Boccali A, Calucci L, Raucci MG, Altomare L. Injectable in situ gelling methylcellulose-based hydrogels for bone tissue regeneration. J Mater Chem B 2024; 12:4427-4440. [PMID: 38629219 DOI: 10.1039/d3tb02414h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2024]
Abstract
Injectable bone substitutes (IBSs) represent a compelling choice for bone tissue regeneration, as they can be exploited to optimally fill complex bone defects in a minimally invasive manner. In this context, in situ gelling methylcellulose (MC) hydrogels may be engineered to be free-flowing injectable solutions at room temperature and gels upon exposure to body temperature. Moreover, incorporating a suitable inorganic phase can further enhance the mechanical properties of MC hydrogels and promote mineralization, thus assisting early cell adhesion to the hydrogel and effectively guiding bone tissue regeneration. In this work, thermo-responsive IBSs were designed selecting MC as the organic matrix and calcium phosphate (CaP) or CaP modified with graphene oxide (CaPGO) as the inorganic component. The resulting biocomposites displayed a transition temperature around body temperature, preserved injectability even after loading with the inorganic components, and exhibited adequate retention on an ex vivo calf femoral bone defect model. The addition of CaP and CaPGO promoted the in vitro mineralization process already 14 days after immersion in simulated body fluid. Interestingly, combined X-ray diffraction and solid state nuclear magnetic resonance characterizations revealed that the formed biomimetic phase was constituted by crystalline hydroxyapatite and amorphous calcium phosphate. In vitro biological characterization revealed the beneficial impact of CaP and CaPGO, indicating their potential in promoting cell adhesion, proliferation and osteogenic differentiation. Remarkably, the addition of GO, which is very attractive for its bioactive properties, did not negatively affect the injectability of the hydrogel nor the mineralization process, but had a positive impact on cell growth and osteogenic differentiation on both pre-differentiated and undifferentiated cells. Overall, the proposed formulations represent potential candidates for use as IBSs for application in bone regeneration both under physiological and pathological conditions.
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Affiliation(s)
- Lorenzo Bonetti
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
| | - Silvia Borsacchi
- Institute of Chemistry of Organometallic Compounds (ICCOM), Italian National Research Council (CNR), Via G. Moruzzi 1, 56124 Pisa, Italy.
- Center for Instrument Sharing of the University of Pisa (CISUP), Lungarno Pacinotti 43/44, 56126 Pisa, Italy
| | - Alessandra Soriente
- Institute for Polymers, Composites and Biomaterials (IPCB), Italian National Research Council, Viale J.F. Kennedy 54, Mostra d'Oltremare Pad 20, 80125 Napoli, Italy
| | - Alberto Boccali
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
| | - Lucia Calucci
- Institute of Chemistry of Organometallic Compounds (ICCOM), Italian National Research Council (CNR), Via G. Moruzzi 1, 56124 Pisa, Italy.
- Center for Instrument Sharing of the University of Pisa (CISUP), Lungarno Pacinotti 43/44, 56126 Pisa, Italy
| | - Maria Grazia Raucci
- Institute for Polymers, Composites and Biomaterials (IPCB), Italian National Research Council, Viale J.F. Kennedy 54, Mostra d'Oltremare Pad 20, 80125 Napoli, Italy
| | - Lina Altomare
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
- National Interuniversity Consortium for Materials Science and Technology (INSTM), Via Giuseppe Giusti 9, 50121 Firenze, Italy
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Mao S, Ren Y, Chen S, Liu D, Ye X, Tian J. Development and characterization of pH responsive sodium alginate hydrogel containing metal-phenolic network for anthocyanin delivery. Carbohydr Polym 2023; 320:121234. [PMID: 37659819 DOI: 10.1016/j.carbpol.2023.121234] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/21/2023] [Accepted: 07/22/2023] [Indexed: 09/04/2023]
Abstract
Favorable hydrogels can be used as a material to deliver bioactive molecules and improve the stability of bioactive substances, while their safety needs to be improved. In this study, protocatechuic acid (PCA) and Fe3+ were rapidly self-assembled to form a metal-phenolic network under different pH conditions, and then sodium alginate (SA) was added to prepare the SA/PCA/Fe hydrogel without adding other chemical reagents. The structural characteristic of SA/PCA/Fe hydrogel was characterized by infrared spectroscopy, X-ray diffraction analysis and scanning electron microscopy. The results showed that the structures of SA/PCA/Fe hydrogels prepared at different pH values were significantly different. The texture analysis, water-holding measurement and rheological analysis indicated that the SA/PCA/Fe hydrogel showed higher gel strength, water holding capacity and storage modulus. Thermogravimetric analysis illuminated that the SA/PCA/Fe hydrogel enhanced the thermal stability of free anthocyanins through encapsulating anthocyanins. Moreover, in vitro simulated digestion experiment revealed that SA/PCA/Fe hydrogel could control the release of anthocyanins in the simulated gastrointestinal tract. To sum up, this present study might provide a safer and feasible way for the delivery of bioactive substances.
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Affiliation(s)
- Shuifang Mao
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
| | - Yanming Ren
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China; Zhejiang University Zhongyuan Institute, Zhengzhou 450000, China; The Rural Development Academy, Zhejiang University, Hangzhou 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Hangzhou 315100, China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China; Zhejiang University Zhongyuan Institute, Zhengzhou 450000, China; The Rural Development Academy, Zhejiang University, Hangzhou 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Hangzhou 315100, China.
| | - Jinhu Tian
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China; Zhejiang University Zhongyuan Institute, Zhengzhou 450000, China; The Rural Development Academy, Zhejiang University, Hangzhou 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Hangzhou 315100, China.
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Mikhailidi A, Volf I, Belosinschi D, Tofanica BM, Ungureanu E. Cellulose-Based Metallogels-Part 2: Physico-Chemical Properties and Biological Stability. Gels 2023; 9:633. [PMID: 37623088 PMCID: PMC10453698 DOI: 10.3390/gels9080633] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/26/2023] Open
Abstract
Metallogels represent a class of composite materials in which a metal can be a part of the gel network as a coordinated ion, act as a cross-linker, or be incorporated as metal nanoparticles in the gel matrix. Cellulose is a natural polymer that has a set of beneficial ecological, economic, and other properties that make it sustainable: wide availability, renewability of raw materials, low-cost, biocompatibility, and biodegradability. That is why metallogels based on cellulose hydrogels and additionally enriched with new properties delivered by metals offer exciting opportunities for advanced biomaterials. Cellulosic metallogels can be either transparent or opaque, which is determined by the nature of the raw materials for the hydrogel and the metal content in the metallogel. They also exhibit a variety of colors depending on the type of metal or its compounds. Due to the introduction of metals, the mechanical strength, thermal stability, and swelling ability of cellulosic materials are improved; however, in certain conditions, metal nanoparticles can deteriorate these characteristics. The embedding of metal into the hydrogel generally does not alter the supramolecular structure of the cellulose matrix, but the crystallinity index changes after decoration with metal particles. Metallogels containing silver (0), gold (0), and Zn(II) reveal antimicrobial and antiviral properties; in some cases, promotion of cell activity and proliferation are reported. The pore system of cellulose-based metallogels allows for a prolonged biocidal effect. Thus, the incorporation of metals into cellulose-based gels introduces unique properties and functionalities of this material.
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Affiliation(s)
- Aleksandra Mikhailidi
- Higher School of Printing and Media Technologies, St. Petersburg State University of Industrial Technologies and Design, 18 Bolshaya Morskaya Street, 191186 St. Petersburg, Russia;
| | - Irina Volf
- “Gheorghe Asachi” Technical University of Iasi, 73 Prof. Dr. Docent D. Mangeron Boulevard, 700050 Iasi, Romania
| | - Dan Belosinschi
- Département de Chimie-Biologie/Biologie Medicale, Université du Québec à Trois-Rivières, Trois-Rivieres, QC G8Z 4M3, Canada;
| | - Bogdan-Marian Tofanica
- “Gheorghe Asachi” Technical University of Iasi, 73 Prof. Dr. Docent D. Mangeron Boulevard, 700050 Iasi, Romania
- IF2000 Academic Foundation, 73 Prof. Dr. Docent D. Mangeron Boulevard, 700050 Iasi, Romania
| | - Elena Ungureanu
- “Ion Ionescu de la Brad” University of Life Sciences Iasi, 3 Mihail Sadoveanu Alley, 700490 Iasi, Romania;
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Flores-Céspedes F, Villafranca-Sánchez M, Fernández-Pérez M. Alginate-Bentonite-Based Hydrogels Designed to Obtain Controlled-Release Formulations of Dodecyl Acetate. Gels 2023; 9:gels9050388. [PMID: 37232979 DOI: 10.3390/gels9050388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/26/2023] [Accepted: 05/03/2023] [Indexed: 05/27/2023] Open
Abstract
Dodecyl acetate (DDA), a volatile compound present in insect sex pheromones, was incorporated into alginate-based granules to obtain controlled-release formulations (CRFs). In this research, not only was the effect of adding bentonite to the basic alginate-hydrogel formulation studied, but also that of the encapsulation efficiency on the release rate of DDA in laboratory and field experiments. DDA encapsulation efficiency increased as the alginate/bentonite ratio increased. From the preliminary volatilization experiments, a linear relationship was found between the DDA release percentage and the amount of bentonite present in the alginate CRFs. Laboratory kinetic volatilization experiments showed that the selected alginate-bentonite formulation (DDAB75A10) exhibited a prolonged DDA release profile. The value of the diffusional exponent obtained from the Ritger and Peppas model (n = 0.818) indicated that the release process follows a non-Fickian or anomalous transport mechanism. Field volatilization experiments showed a steady release of DDA over time from the alginate-based hydrogels tested. This result, together with those obtained from the laboratory release experiments, allowed the obtainment of a set of parameters to improve the preparation of alginate-based CRFs for the use of volatile biological molecules, such as DDA, in agricultural biological control programs.
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Affiliation(s)
- Francisco Flores-Céspedes
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Agrifood Campus of International Excellence (ceiA3), Crta. Sacramento s/n, 04120 Almería, Spain
| | - Matilde Villafranca-Sánchez
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Agrifood Campus of International Excellence (ceiA3), Crta. Sacramento s/n, 04120 Almería, Spain
| | - Manuel Fernández-Pérez
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Agrifood Campus of International Excellence (ceiA3), Crta. Sacramento s/n, 04120 Almería, Spain
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Qiu C, Wu Y, Guo Q, Shi Q, Zhang J, Meng Y, Xia F, Wang J. Preparation and application of calcium phosphate nanocarriers in drug delivery. Mater Today Bio 2022; 17:100501. [DOI: 10.1016/j.mtbio.2022.100501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/05/2022] [Accepted: 11/20/2022] [Indexed: 11/24/2022] Open
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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de Lima CSA, Varca JPRO, Alves VM, Nogueira KM, Cruz CPC, Rial-Hermida MI, Kadłubowski SS, Varca GHC, Lugão AB. Mucoadhesive Polymers and Their Applications in Drug Delivery Systems for the Treatment of Bladder Cancer. Gels 2022; 8:gels8090587. [PMID: 36135300 PMCID: PMC9498303 DOI: 10.3390/gels8090587] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/01/2022] [Accepted: 09/08/2022] [Indexed: 11/23/2022] Open
Abstract
Bladder cancer (BC) is the tenth most common type of cancer worldwide, affecting up to four times more men than women. Depending on the stage of the tumor, different therapy protocols are applied. Non-muscle-invasive cancer englobes around 70% of the cases and is usually treated using the transurethral resection of bladder tumor (TURBIT) followed by the instillation of chemotherapy or immunotherapy. However, due to bladder anatomy and physiology, current intravesical therapies present limitations concerning permeation and time of residence. Furthermore, they require several frequent catheter insertions with a reduced interval between doses, which is highly demotivating for the patient. This scenario has encouraged several pieces of research focusing on the development of drug delivery systems (DDS) to improve drug time residence, permeation capacity, and target release. In this review, the current situation of BC is described concerning the disease and available treatments, followed by a report on the main DDS developed in the past few years, focusing on those based on mucoadhesive polymers as a strategy. A brief review of methods to evaluate mucoadhesion properties is also presented; lastly, different polymers suitable for this application are discussed.
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Affiliation(s)
- Caroline S. A. de Lima
- Nuclear and Energy Research Institute, IPEN-CNEN/SP—University of São Paulo, Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil
- Correspondence:
| | - Justine P. R. O. Varca
- Nuclear and Energy Research Institute, IPEN-CNEN/SP—University of São Paulo, Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil
| | - Victória M. Alves
- Nuclear and Energy Research Institute, IPEN-CNEN/SP—University of São Paulo, Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil
| | - Kamila M. Nogueira
- Nuclear and Energy Research Institute, IPEN-CNEN/SP—University of São Paulo, Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil
| | - Cassia P. C. Cruz
- Nuclear and Energy Research Institute, IPEN-CNEN/SP—University of São Paulo, Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil
| | - M. Isabel Rial-Hermida
- I+D Farma Group (GI-1645), Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Sławomir S. Kadłubowski
- Institute of Applied Radiation Chemistry (IARC), Lodz University of Technology, Wroblewskiego No. 15, 93-590 Lodz, Poland
| | - Gustavo H. C. Varca
- Nuclear and Energy Research Institute, IPEN-CNEN/SP—University of São Paulo, Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil
| | - Ademar B. Lugão
- Nuclear and Energy Research Institute, IPEN-CNEN/SP—University of São Paulo, Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil
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Fu H, Wang L, Bao Q, Ni D, Hu P, Shi J. Acid Neutralization and Immune Regulation by Calcium-Aluminum-Layered Double Hydroxide for Osteoporosis Reversion. J Am Chem Soc 2022; 144:8987-8999. [PMID: 35549335 DOI: 10.1021/jacs.2c00749] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Osteoporosis is a kind of global chronic bone disease characterized by progressive loss of bone mass and bone quality reduction, leading to a largely increased risk of bone fragility. In clinics, the current treatment of osteoporosis relies on the inhibition of bone damage by osteoclasts but ignores the function of immune cells in the progress of osteoporosis, leading to much compromised therapeutic efficacy. In this work, a highly effective osteoporosis-immunotherapeutic modality is established for the treatment of osteoporosis based on acid neutralization in synergy with immune microenvironment regulation by a specially designed nanocatalytic medicine, calcein functionalized calcium-aluminum-layered double hydroxide (CALC) nanosheets. Briefly, the mildly alkaline CALC nanosheets could neutralize the acidic microenvironment of osteoporosis accompanying the acidity-responsive LDH degradation. Subsequently, calcium phosphate nanoparticles (CAPs) are generated by the reaction between the released Ca2+ from LDH degradation and endogenous phosphates, resulting in M2 phenotype anti-inflammatory differentiation of bone macrophages through a c-Maf transcriptional factor pathway and the following activity enhancements of regulatory T cells (Treg) and the deactivation of T helper 17 cells (TH17). Both in vitro and in vivo results show an excellent therapeutic efficacy on osteoporosis featuring a significant BV/TV (%) enhancement of femurs from 6.2 to 10.7, demonstrating high feasibility of this therapeutic concept through the combined acid neutralization and immune regulation. Such an inorganic nanomaterial-based strategy provides a novel, efficient, and biosafe therapeutic modality for intractable osteoporosis treatment, which will benefit patients suffering from osteoporosis.
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Affiliation(s)
- Hao Fu
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics Chinese Academy of Sciences, Research Unit of Nanocatalytic Medicine in Specific Therapy for Serious Disease, Chinese Academy of Medical Sciences (2021RU012), Shanghai 200050, P. R. China
| | - Lingtian Wang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P. R. China
| | - Qunqun Bao
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics Chinese Academy of Sciences, Research Unit of Nanocatalytic Medicine in Specific Therapy for Serious Disease, Chinese Academy of Medical Sciences (2021RU012), Shanghai 200050, P. R. China.,Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai 200331, P. R. China
| | - Dalong Ni
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200240, P. R. China
| | - Ping Hu
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics Chinese Academy of Sciences, Research Unit of Nanocatalytic Medicine in Specific Therapy for Serious Disease, Chinese Academy of Medical Sciences (2021RU012), Shanghai 200050, P. R. China.,Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai 200331, P. R. China
| | - Jianlin Shi
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics Chinese Academy of Sciences, Research Unit of Nanocatalytic Medicine in Specific Therapy for Serious Disease, Chinese Academy of Medical Sciences (2021RU012), Shanghai 200050, P. R. China.,Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai 200331, P. R. China
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Xu F, Dawson C, Lamb M, Mueller E, Stefanek E, Akbari M, Hoare T. Hydrogels for Tissue Engineering: Addressing Key Design Needs Toward Clinical Translation. Front Bioeng Biotechnol 2022; 10:849831. [PMID: 35600900 PMCID: PMC9119391 DOI: 10.3389/fbioe.2022.849831] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/12/2022] [Indexed: 12/15/2022] Open
Abstract
Graphical Abstract
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Affiliation(s)
- Fei Xu
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada
| | - Chloe Dawson
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada
| | - Makenzie Lamb
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada
| | - Eva Mueller
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada
| | - Evan Stefanek
- Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada
- Center for Advanced Materials and Related Technologies, University of Victoria, Victoria, BC, Canada
| | - Mohsen Akbari
- Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada
- Center for Advanced Materials and Related Technologies, University of Victoria, Victoria, BC, Canada
- Biotechnology Center, Silesian University of Technology, Gliwice, Poland
- *Correspondence: Mohsen Akbari, ; Todd Hoare,
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada
- *Correspondence: Mohsen Akbari, ; Todd Hoare,
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Xing Z, Zhao C, Wu S, Yang D, Zhang C, Wei X, Wei X, Su H, Liu H, Fan Y. Hydrogel Loaded with VEGF/TFEB-Engineered Extracellular Vesicles for Rescuing Critical Limb Ischemia by a Dual-Pathway Activation Strategy. Adv Healthc Mater 2022; 11:e2100334. [PMID: 34297471 DOI: 10.1002/adhm.202100334] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 07/03/2021] [Indexed: 02/05/2023]
Abstract
Critical limb ischemia (CLI) is the most severe clinical manifestation of peripheral arterial disease, which causes many amputations and deaths. Conventional treatment strategies for CLI (e.g., stent implantation and vascular surgery) bring surgical risk, which are not suitable for each patient. Extracellular vesicles (EVs) can be a potential solution for CLI. Herein, vascular endothelial growth factor (VEGF; i.e., a crucial molecule related to angiogenesis) and transcription factor EB (TFEB; i.e., a pivotal regulator of autophagy) are chosen as the target gene to improve the bioactivity of EVs derived from endothelial cells. The VEGF/TFEB-engineered EVs (Engineered-EVs) are fabricated by genetically engineering the parent cells, and their versatile functions are confirmed using three cell models (human umbilical vein endothelial cells, myoblast, and monocytes). Injectable thermal-responsive hydrogel are then combined with Engineered-EVs to combat CLI. These results reveal that the hydrogel can enhance the stability of Engineered-EVs in vivo and release EVs at different temperatures. Moreover, the results of animal studies indicate that Engineered-EV/Hydrogel can significantly improve neovascularization, attenuate muscle injury, and recover limb function after CLI. Finally, mechanistic studies shed light on the therapeutic effect of Engineered-EV/Hydrogel due to the activated VEGF/VEGFR pathway and autophagy-lysosomal pathway.
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Affiliation(s)
- Zheng Xing
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Centre for Biomedical Engineering School of Biological Science and Medical Engineering Beihang University Beijing 100191 P. R. China
| | - Chen Zhao
- School of Pharmaceutical Sciences Tsinghua University Beijing 100084 P. R. China
| | - Siwen Wu
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy West China Hospital Sichuan University Chengdu 610041 P. R. China
| | - Depeng Yang
- School of Life Sciences and Technology Harbin Institute of Technology Harbin Heilongjiang 150001 P. R. China
| | - Chunchen Zhang
- Key Laboratory of Biomedical Engineering of Ministry of Education Zhejiang University Hangzhou 310027 China
| | - Xinbo Wei
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Centre for Biomedical Engineering School of Biological Science and Medical Engineering Beihang University Beijing 100191 P. R. China
| | - Xinran Wei
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Centre for Biomedical Engineering School of Biological Science and Medical Engineering Beihang University Beijing 100191 P. R. China
| | - Haoran Su
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Centre for Biomedical Engineering School of Biological Science and Medical Engineering Beihang University Beijing 100191 P. R. China
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Centre for Biomedical Engineering School of Biological Science and Medical Engineering Beihang University Beijing 100191 P. R. China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Centre for Biomedical Engineering School of Biological Science and Medical Engineering Beihang University Beijing 100191 P. R. China
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11
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Yeo YH, Chathuranga K, Lee JS, Koo J, Park WH. Multifunctional and thermoresponsive methylcellulose composite hydrogels with photothermal effect. Carbohydr Polym 2022; 277:118834. [PMID: 34893251 DOI: 10.1016/j.carbpol.2021.118834] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/19/2021] [Accepted: 10/27/2021] [Indexed: 01/10/2023]
Abstract
Multifunctional and thermoresponsive hydrogels can be used as soft materials in various medical applications, such as beauty devices, drug delivery, and near-infrared (NIR) lasers. In this study, methylcellulose (MC) composite hydrogels containing tannic acid (TA) and Fe3+ were prepared via a simple, fast process. The MC composite hydrogel contains hydrogen bonds between the MC polymer and TA and coordination bonds between TA and Fe3+, without losing the reversible thermogelation properties of the MC polymer. The gelation rates and mechanical properties of the MC composite hydrogel were controlled by varying its TA and Fe3+ contents. In particular, the hydrogel with a TA-Fe chelating complex showed an excellent photothermal effect, indicating its potential application in cosmetic beauty devices. It also exhibited UV-blocking, antioxidant, and antibacterial properties owing to the multifunctional TA. The facile processing of these MC/TA/Fe hydrogels provides new opportunities for biomedical applications and beauty devices employing NIR laser therapy.
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Affiliation(s)
- Yong Ho Yeo
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea
| | - Kiramage Chathuranga
- Department of Veterinary Microbiology, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, South Korea
| | - Jong Soo Lee
- Department of Veterinary Microbiology, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, South Korea
| | - Jaseung Koo
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea
| | - Won Ho Park
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea.
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12
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Gashti MP, Stir M, Burgener M, Hulliger J, Choobar BG, Nooralian Z, Moghaddam MR. Hydroxypropyl methylcellulose-controlled in vitro calcium phosphate biomineralization. NEW J CHEM 2022. [DOI: 10.1039/d2nj02365b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Scanning pyroelectric microscopy of DCPD single crystals.
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Affiliation(s)
- Mazeyar Parvinzadeh Gashti
- GTI Chemical Solutions, Inc., 29385, Wellford, South Carolina, USA
- InsectaPel, LLC, 29385, Wellford, South Carolina, USA
| | - Manuela Stir
- Department of Chemistry & Biochemistry, University of Berne, Freiestrasse 3 CH-3012, Berne, Switzerland
| | - Matthias Burgener
- Department of Chemistry & Biochemistry, University of Berne, Freiestrasse 3 CH-3012, Berne, Switzerland
| | - Jürg Hulliger
- Department of Chemistry & Biochemistry, University of Berne, Freiestrasse 3 CH-3012, Berne, Switzerland
| | - Behnam Ghalami Choobar
- Department of chemical engineering, Amirkabir University of technology (Tehran Polytechnic), Tehran, Iran
| | - Zoha Nooralian
- Young Researchers and Elites Club, Yadegar-e-Imam Khomeini (RAH) Branch, Islamic Azad University, Tehran, Iran
| | - Milad Rahimi Moghaddam
- Faculty of Industrial Engineering, Khajeh Nasir Toosi University of Technology, Tehran, Iran
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13
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Rabiee N, Bagherzadeh M, Ghadiri AM, Kiani M, Ahmadi S, Jajarmi V, Fatahi Y, Aldhaher A, Tahriri M, Webster TJ, Mostafavi E. Calcium-based nanomaterials and their interrelation with chitosan: optimization for pCRISPR delivery. J Nanostructure Chem 2022; 12:919-932. [PMID: 34580605 PMCID: PMC8457547 DOI: 10.1007/s40097-021-00446-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 09/03/2021] [Indexed: 05/17/2023]
Abstract
UNLABELLED There have been numerous advancements in the early diagnosis, detection, and treatment of genetic diseases. In this regard, CRISPR technology is promising to treat some types of genetic issues. In this study, the relationship between calcium (due to its considerable physicochemical properties) and chitosan (as a natural linear polysaccharide) was investigated and optimized for pCRISPR delivery. To achieve this, different forms of calcium, such as calcium nanoparticles (CaNPs), calcium phosphate (CaP), a binary blend of calcium and chitosan including CaNPs/Chitosan and CaP/Chitosan, as well as their tertiary blend including CaNPs-CaP/Chitosan, were prepared via both routine and green procedures using Salvia hispanica to reduce toxicity and increase nanoparticle stability (with a yield of 85%). Such materials were also applied to the human embryonic kidney (HEK-293) cell line for pCRISPR delivery. The results were optimized using different characterization techniques demonstrating acceptable binding with DNA (for both CaNPs/Chitosan and CaNPs-CaP/Chitosan) significantly enhancing green fluorescent protein (EGFP) (about 25% for CaP/Chitosan and more than 14% for CaNPs-CaP/Chitosan). SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s40097-021-00446-1.
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Affiliation(s)
- Navid Rabiee
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | | | | | - Mahsa Kiani
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | - Sepideh Ahmadi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Vahid Jajarmi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yousef Fatahi
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 14155-6451 Iran
- Faculty of Pharmacy, Nanotechnology Research Center, Tehran University of Medical Sciences, Tehran, 14155-6451 Iran
- Universal Scientific Education and Research Network (USERN), Tehran, 15875-4413 Iran
| | - Abdullah Aldhaher
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | | | - Thomas J. Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115 USA
| | - Ebrahim Mostafavi
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115 USA
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305 USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305 USA
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14
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Kim MH, Lin CC. Norbornene-functionalized methylcellulose as a thermo- and photo-responsive bioink. Biofabrication 2021; 13:10.1088/1758-5090/ac24dc. [PMID: 34496360 PMCID: PMC8593879 DOI: 10.1088/1758-5090/ac24dc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/08/2021] [Indexed: 02/06/2023]
Abstract
Three-dimensional (3D) bioprinting has emerged as an important tool to fabricate scaffolds with complex structures for tissue engineering and regenerative medicine applications. For extrusion-based 3D bioprinting, the success of printing complex structures relies largely on the properties of bioink. Methylcellulose (MC) has been exploited as a potential bioink for 3D bioprinting due to its temperature-dependent rheological properties. However, MC is highly soluble and has low structural stability at room temperature, making it suboptimal for 3D bioprinting applications. In this study, we report a one-step synthesis protocol for modifying MC with norbornene (MCNB), which serves as a new bioink for 3D bioprinting. MCNB preserves the temperature-dependent reversible sol-gel transition and readily reacts with thiol-bearing linkers through light-mediated step-growth thiol-norbornene photopolymerization. Furthermore, we rendered the otherwise inert MC network bioactive through facile conjugation of integrin-binding ligands (e.g. CRGDS) or via incorporating cell-adhesive and protease-sensitive gelatin-based macromer (e.g. GelNB). The adaptability of the new MCNB-based bioink offers an attractive option for diverse 3D bioprinting applications.
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Affiliation(s)
- Min Hee Kim
- Department of Biomedical Engineering, Purdue School of Engineering & Technology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA
| | - Chien-Chi Lin
- Department of Biomedical Engineering, Purdue School of Engineering & Technology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA
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15
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Bialik M, Kuras M, Sobczak M, Oledzka E. Achievements in Thermosensitive Gelling Systems for Rectal Administration. Int J Mol Sci 2021; 22:ijms22115500. [PMID: 34071110 PMCID: PMC8197127 DOI: 10.3390/ijms22115500] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/22/2022] Open
Abstract
Rectal drug delivery is an effective alternative to oral and parenteral treatments. This route allows for both local and systemic drug therapy. Traditional rectal dosage formulations have historically been used for localised treatments, including laxatives, hemorrhoid therapy and antipyretics. However, this form of drug dosage often feels alien and uncomfortable to a patient, encouraging refusal. The limitations of conventional solid suppositories can be overcome by creating a thermosensitive liquid suppository. Unfortunately, there are currently only a few studies describing their use in therapy. However, recent trends indicate an increase in the development of this modern therapeutic system. This review introduces a novel rectal drug delivery system with the goal of summarising recent developments in thermosensitive liquid suppositories for analgesic, anticancer, antiemetic, antihypertensive, psychiatric, antiallergic, anaesthetic, antimalarial drugs and insulin. The report also presents the impact of various types of components and their concentration on the properties of this rectal dosage form. Further research into such formulations is certainly needed in order to meet the high demand for modern, efficient rectal gelling systems. Continued research and development in this field would undoubtedly further reveal the hidden potential of rectal drug delivery systems.
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16
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Yeo YH, Park WH. Dual-crosslinked, self-healing and thermo-responsive methylcellulose/chitosan oligomer copolymer hydrogels. Carbohydr Polym 2021; 258:117705. [DOI: 10.1016/j.carbpol.2021.117705] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/11/2021] [Accepted: 01/22/2021] [Indexed: 12/28/2022]
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17
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Kim MH, Lee J, Lee JN, Lee H, Park WH. Mussel-inspired poly(γ-gl utamic acid)/nanosilicate composite hydrogels with enhanced mechanical properties, tissue adhesive properties, and skin tissue regeneration. Acta Biomater 2021; 123:254-262. [PMID: 33465509 DOI: 10.1016/j.actbio.2021.01.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 12/26/2022]
Abstract
It was demonstrated herein that the adhesive property of catechol-functionalized nanocomposite hydrogel can be enhanced by tuning the cohesive strength due to the secondary crosslinking between catechol and synthetic bioactive nanosilicate, viz. Laponite (LP). The nanocomposite hydrogel consists of the natural anionic poly(γ-glutamic acid) (γ-PGA), which was functionalized with catechol moiety, and incorporated with disk-structured LP. The dual-crosslinked hydrogel was fabricated by enzymatic chemical crosslinking of catechol in the presence of horseradish peroxidase (HRP) and H2O2, and physical crosslinking between γ-PGA-catechol conjugate and LP. The PGADA/LP nanocomposite hydrogels with catechol moieties showed strong adhesiveness to various tissue layers and demonstrated an excellent hemostatic properties. These PGADA/LP nanocomposite hydrogels are potentially applied for injectable tissue engineering hydrogels, tissue adhesives, and hemostatic materials. STATEMENT OF SIGNIFICANCE: Recently, many attempts have been performed to manufacture high-performance tissue adhesives using synthetic and natural polymer-based materials. In order to apply in various biological substrates, commercially available tissue adhesives should have an improved adhesive property in wet conditions. Here, we designed a mussel-inspired dual crosslinked tissue adhesive that meets most of conditions as an ideal tissue adhesive. The designed tissue adhesive is composed of poly(γ-glutamic acid)-dopamine conjugate (PGADA)-gluing macromer, horseradish peroxidase (HRP)/hydrogen peroxide (H2O2)-enzymatic crosslinker, and Laponite (LP)-additional physical crosslinking nanomaterial. The PGADA hydrogel has tunable physicochemical properties by controlling the LP concentration. Furthermore, this dual crosslinked hydrogel shows strong tissue adhesive property, regardless of the tissue types. Specially the PGADA hydrogel has tissue adhesive strength four times higher than commercial bioadhesive. This dual crosslinked PGADA hydrogel with improved tissue adhesion property is a promising biological tissue adhesive for various tissue type in surgical operation.
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18
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Bonetti L, De Nardo L, Farè S. Thermo-Responsive Methylcellulose Hydrogels: From Design to Applications as Smart Biomaterials. Tissue Engineering Part B: Reviews 2020; 27:486-513. [DOI: 10.1089/ten.teb.2020.0202] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Lorenzo Bonetti
- Department of Chemistry, Materials and Chemical Engineering “G. Natta,” Politecnico di Milano, Milan, Italy
| | - Luigi De Nardo
- Department of Chemistry, Materials and Chemical Engineering “G. Natta,” Politecnico di Milano, Milan, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Florence, Italy
| | - Silvia Farè
- Department of Chemistry, Materials and Chemical Engineering “G. Natta,” Politecnico di Milano, Milan, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Florence, Italy
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19
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Fadera S, Cheng NC, Young TH, Lee IC. In vitro study of SDF-1α-loaded injectable and thermally responsive hydrogels for adipose stem cell therapy by SDF-1/CXCR4 axis. J Mater Chem B 2020; 8:10360-10372. [PMID: 33108417 DOI: 10.1039/d0tb01961e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Stem cell-based approaches have become a promising therapeutic strategy for treating ischemic diseases. The aim of this study was to develop injectable hydrogel systems for the local release of stromal cell-derived factor-1α (SDF-1α) to recruit adipose stem cells (ASCs) that express CXCR4 to achieve stem cell therapy and therapeutic angiogenesis. Thermoresponsive and injectable chitosan (CS)/β-glycerophosphate disodium salt pentahydrate (βGP) hydrogels with different concentrations of hyaluronic acid (HA) were designed and fabricated to achieve local and sustained release of SDF-1α for ASC recruitment. Herein, the material structures, physical properties, gelation temperature, and gelation time of hydrogels with different compositions were determined. The incorporation of 0.9% HA in CS-based hydrogels not only enhanced the gelation time but also increased the strength of the hydrogels. In addition, the results revealed that the thermoresponsive and injectable CS/βGP/HA hydrogels showed good biocompatibility. In addition, the in vitro release profiles showed that the hydrogels achieved sustained release of SDF-1α over 7 days and enhanced ASC migration. The results revealed that the hydrogels with HA enhanced the sustained release effect compared with the hydrogel without HA, indicating that the HA content regulated the physical and release properties of the injectable hydrogels. Therefore, thermoresponsive and injectable CS/βGP/HA hydrogels may provide an alternative for treating ischemic diseases via SDF-1/CXCR4 axis for ASC recruitment and retention.
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Affiliation(s)
- Siaka Fadera
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
| | - Nai-Chen Cheng
- Department of Surgery, National Taiwan University Hospital and College of Medicine, 7 Chung-Shan S Rd, Taipei 100, Taiwan
| | - Tai-Horng Young
- Department of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, 1 Jen-Ai Rd, Taipei 100, Taiwan.
| | - I-Chi Lee
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
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20
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Kim MH, Lee JN, Lee J, Lee H, Park WH. Enzymatically Cross-Linked Poly(γ-glutamic acid) Hydrogel with Enhanced Tissue Adhesive Property. ACS Biomater Sci Eng 2020; 6:3103-3113. [DOI: 10.1021/acsbiomaterials.0c00411] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Min Hee Kim
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea
| | - Jee Na Lee
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea
| | - Jeehee Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34134, South Korea
| | - Haeshin Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34134, South Korea
| | - Won Ho Park
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea
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21
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Shin JY, Yeo YH, Jeong JE, Park SA, Park WH. Dual-crosslinked methylcellulose hydrogels for 3D bioprinting applications. Carbohydr Polym 2020; 238:116192. [PMID: 32299570 DOI: 10.1016/j.carbpol.2020.116192] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 12/14/2022]
Abstract
Thermo-sensitive methylcellulose (MC) hydrogel has been widely used as a scaffold material for biomedical applications. However, due to its poor mechanical properties, the MC-based hydrogel has rarely been employed in 3D bioprinting for tissue engineering scaffolds. In this study, the dual crosslinkable tyramine-modified MC (MC-Tyr) conjugate was prepared via a two-step synthesis, and its hydrogel showed excellent mechanical properties and printability for 3D bioprinting applications. The MC-Tyr conjugate formed a dual-crosslinked hydrogel by modulating the temperature and/or visible light. A combination of reversible physical crosslinking (thermal crosslinking) and irreversible chemical crosslinking (photocrosslinking) was used in this dual crosslinked hydrogel. Also, the photocrosslinking of MC-Tyr solution was facilitated by visible light exposure in the presence of biocompatible photoinitiators (riboflavin, RF and riboflavin 5'-monophophate, RFp). The RF and RFp were used to compare the cytotoxicity and salting-out effect of MC-Tyr hydrogel, as well as the initiation ability, based on the difference in chemical structure. Also, the influence of the printing parameters on the printed MC hydrogel was investigated. Finally, the cell-laden MC-Tyr bioink was successfully extruded into stable 3D hydrogel constructs with high resolution via a dual crosslinking strategy. Furthermore, the MC-Tyr scaffolds showed excellent cell viability and proliferation.
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Affiliation(s)
- Ji Youn Shin
- Department of Organic Materials Engineering, Chungnam National University, Daejeon, 34134, South Korea
| | - Yong Ho Yeo
- Department of Organic Materials Engineering, Chungnam National University, Daejeon, 34134, South Korea
| | - Jae Eun Jeong
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, Daejeon, 34103, South Korea
| | - Su A Park
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, Daejeon, 34103, South Korea.
| | - Won Ho Park
- Department of Organic Materials Engineering, Chungnam National University, Daejeon, 34134, South Korea.
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22
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Matamoros-Veloza A, Hossain KMZ, Scammell BE, Ahmed I, Hall R, Kapur N. Formulating injectable pastes of porous calcium phosphate glass microspheres for bone regeneration applications. J Mech Behav Biomed Mater 2019; 102:103489. [PMID: 31622859 DOI: 10.1016/j.jmbbm.2019.103489] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 10/07/2019] [Accepted: 10/10/2019] [Indexed: 12/19/2022]
Abstract
Current trends in regenerative medicine treatments for bone repair applications focus on cell-based therapies. These aim to deliver the treatment via a minimally invasive injection to reduce patient trauma and to improve efficacy. This paper describes the injectability of porous calcium phosphate glass microspheres to be used for bone repair based on their formulation, rheology and flow behavior. The use of excipients (xanthan gum, methyl cellulose and carboxyl methyl cellulose) were investigated to improve flow performance. Based on our results, the flow characteristics of the glass microsphere pastes vary according to particle size, surface area, and solid to liquid ratio, as well as the concentration of viscosity modifiers used. The optimal flow characteristics of calcium phosphate glass microsphere pastes was found to contain 40 mg/mL of xanthan gum which increased viscosity whilst providing elastic properties (∼29,000 Pa) at shear rates that mirror the injection process and the resting period post injection, preventing the glass microspheres from both damage and dispersion. It was established that a base formulation must contain 1 g of glass microspheres (60-125 μm in size) per 1 mL of cell culture media, or 0.48 g of glass microspheres of sizes between 125 and 200 μm. Furthermore, the glass microsphere formulations with xanthan gum were readily injectable via a syringe-needle system (3-20 mL, 18G and 14G needles), and have the potential to be utilized as a cell (or other biologics) delivery vehicle for bone regeneration applications.
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Affiliation(s)
| | - Kazi M Zakir Hossain
- Faculty of Engineering, Advanced Materials Research Group, University of Nottingham, NG7 2RD, UK; Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Brigitte E Scammell
- Faculty of Medicine & Health Sciences, Queen's Medical Centre, Nottingham, UK
| | - Ifty Ahmed
- Faculty of Engineering, Advanced Materials Research Group, University of Nottingham, NG7 2RD, UK
| | - Richard Hall
- School of Mechanical Engineering, University of Leeds, LS2 9JT, UK
| | - Nikil Kapur
- School of Mechanical Engineering, University of Leeds, LS2 9JT, UK.
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23
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Wang R, Yao X, Li T, Li X, Jin M, Ni Y, Yuan W, Xie X, Lu L, Li M. Reversible Thermoresponsive Hydrogel Fabricated from Natural Biopolymer for the Improvement of Critical Limb Ischemia by Controlling Release of Stem Cells. Adv Healthc Mater 2019; 8:e1900967. [PMID: 31557404 DOI: 10.1002/adhm.201900967] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/30/2019] [Indexed: 12/17/2022]
Abstract
Stem cells therapy is an effective treatment for critical limb ischemia diseases (CLI), but is limited to low cells retention and poor target release in severe ischemia tissues. Due to the notable feature of CLI, namely, the temperature of ischemia tissues decreases with the severity of the lesions, a thermoresponsive and reversible hydrogel based on methylcellulose-salt system encapsulating stem cells is facilely prepared and successfully achieved the goal of releasing stem cells in lower temperature areas. The investigations show that the thermogel presents notable biocompatibility, thermoresponsiveness, and cytoprotection. Furthermore, the combined transplantation of hydrogel and stem cells system effectively inhibits the fibrosis and muscular atrophy of lower limb ischemia, accelerates the recovery of lower limb blood flow, and promotes angiogenesis, indicating that the reversible thermogel can promote vascular repair by controlling the release of loaded stem cells in the treatment of CLI.
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Affiliation(s)
- Rui Wang
- School of Materials Science and EngineeringShanghai Tenth People's HospitalSchool of MedicineTongji University Shanghai 201804 China
| | - Xueliang Yao
- School of Materials Science and EngineeringShanghai Tenth People's HospitalSchool of MedicineTongji University Shanghai 201804 China
| | - Tingyu Li
- School of Materials Science and EngineeringShanghai Tenth People's HospitalSchool of MedicineTongji University Shanghai 201804 China
| | - Xue Li
- School of Materials Science and EngineeringShanghai Tenth People's HospitalSchool of MedicineTongji University Shanghai 201804 China
| | - Mingming Jin
- Shanghai Key Laboratory of Molecular ImagingShanghai University of Medicine and Health Sciences Shanghai 201318 China
| | - Yebin Ni
- School of Materials Science and EngineeringShanghai Tenth People's HospitalSchool of MedicineTongji University Shanghai 201804 China
| | - Weizhong Yuan
- School of Materials Science and EngineeringShanghai Tenth People's HospitalSchool of MedicineTongji University Shanghai 201804 China
| | - Xiaoyun Xie
- School of Materials Science and EngineeringShanghai Tenth People's HospitalSchool of MedicineTongji University Shanghai 201804 China
| | - Ligong Lu
- Zhuhai Interventional Medical CenterZhuhai Precision Medical CenterZhuhai People's HospitalZhuhai Hospital Affiliated with Jinan University Zhuhai Guangdong 519000 China
| | - Maoquan Li
- School of Materials Science and EngineeringShanghai Tenth People's HospitalSchool of MedicineTongji University Shanghai 201804 China
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24
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Cristovão AF, Sousa D, Silvestre F, Ropio I, Gaspar A, Henriques C, Velhinho A, Baptista AC, Faustino M, Ferreira I. Customized tracheal design using 3D printing of a polymer hydrogel: influence of UV laser cross-linking on mechanical properties. 3D Print Med 2019; 5:12. [PMID: 31376049 PMCID: PMC6743139 DOI: 10.1186/s41205-019-0049-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 07/12/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The use of 3D printing of hydrogels as a cell support in bio-printing of cartilage, organs and tissue has attracted much research interest. For cartilage applications, hydrogels as soft materials must show some degree of rigidity, which can be achieved by photo- or chemical polymerization. In this work, we combined chemical and UV laser polymeric cross-linkage to control the mechanical properties of 3D printed hydrogel blends. Since there are few studies on UV laser cross-linking combined with 3D printing of hydrogels, the work here reported offered many challenges. METHODS Polyethylene glycol diacrylate (PEGDA), sodium alginate (SA) and calcium sulphate (CaSO4) polymer paste containing riboflavin (vitamin B2) and triethanolamine (TEOHA) as a biocompatible photoinitiator was printed in an extrusion 3D plotter using a coupled UV laser. The influence of the laser power on the mechanical properties of the printed samples was then examined in unconfined compression stress-strain tests of 1 × 1 × 1 cm3 sized samples. To evaluate the adhesion of the material between printed layers, compression measurements were performed along the parallel and perpendicular directions to the printing lines. RESULTS At a laser density of 70 mW/cm2, Young's modulus was approximately 6 MPa up to a maximum compression of 20% in the elastic regime for both the parallel and perpendicular measurements. These values were within the range of biological cartilage values. Cytotoxicity tests performed with Vero cells confirmed the cytocompatibility. CONCLUSIONS We printed a partial tracheal model using optimized printing conditions and proved that the materials and methods developed may be useful for printing of organ models to support surgery or even to produce customized tracheal implants, after further optimization.
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Affiliation(s)
| | - David Sousa
- i3N/CENIMAT, Department of Materials Science, Lisbon, Portugal
| | | | - Inês Ropio
- i3N/CENIMAT, Department of Materials Science, Lisbon, Portugal
| | - Ana Gaspar
- i3N/CENIMAT, Department of Materials Science, Lisbon, Portugal
| | - Célia Henriques
- i3N/CENIMAT, Department of Materials Science, Lisbon, Portugal.,i3N/CENIMAT, Department of Physics, Faculty of Science and Technology, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | | | | | - Miguel Faustino
- i3N/CENIMAT, Department of Materials Science, Lisbon, Portugal
| | - Isabel Ferreira
- i3N/CENIMAT, Department of Materials Science, Lisbon, Portugal.
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Abstract
Biomedical hydrogels as sole repair matrices or combined with pre-seeded cells and bioactive growth factors are extensively applied in tissue engineering and regenerative medicine. Hydrogels normally provide three dimensional structures for cell adhesion and proliferation or the controlled release of the loading of drugs or proteins. Various physiochemical properties of hydrogels endow them with distinct applications. In this review, we present the commonly used crosslinking method for hydrogel synthesis involving physical and chemical crosslinks and summarize their current progress and future perspectives.
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Affiliation(s)
- Weikang Hu
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
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Li Z, Wu W, Jiang W, Zhang L, Li Y, Tan Y, Chen S, Lv M, Luo F, Luo T, Wei G. Preparation and regeneration of a thermo-sensitive adsorbent material: methyl cellulose/calcium alginate beads (MC/CABs). Polym Bull (Berl) 2020; 77:1707-28. [DOI: 10.1007/s00289-019-02808-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Zhang J, Zhang B, Chen Q, Zhang B, Song J. Hofmeister Anion-Induced Tunable Rheology of Self-Healing Supramolecular Hydrogels. Nanoscale Res Lett 2019; 14:5. [PMID: 30613857 PMCID: PMC6321834 DOI: 10.1186/s11671-018-2823-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 11/29/2018] [Indexed: 06/09/2023]
Abstract
ᅟ: Physical gelation behaviors of a series of D-gluconic acetal-based derivatives bearing fatty alkyl amine moieties have been investigated. One of these molecules exhibits excellent gelation behaviors in water, and the resultant hydrogels are found to display self-healing properties. Interestingly, the elasticity and strength of the resulting gel can be tuned by the addition of different kinds of Hofmeister salts. The gel formation mechanism was proposed based on the analysis of FT-IR,1HNMR, and XRD, indicating that the main driving force for the self-assembly was the π-π stacking of the benzene rings in the aqueous solution system. Overall, our research provides an efficient approach for facilely tuning the properties of the D-gluconic acetal-based hydrogel. ᅟ.
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Affiliation(s)
- Jing Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, China
- Renai College of Tianjin University, Tianjin, 301636, China
| | - Baohao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, China
| | - Qiang Chen
- Renai College of Tianjin University, Tianjin, 301636, China
| | - Bao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, China.
| | - Jian Song
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, China.
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28
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Abstract
INTRODUCTION Mucosal drug delivery is an attractive route of administration, particularly in overcoming deficits of conventional dosage forms including high first-pass metabolism and poor bioavailability. Fast drainage from the target mucosa, however, represents a major limitation as it prevents sufficient drug absorption. In order to address these problems, mucoadhesive in situ gelling drug delivery systems have been investigated as they facilitate easy application in combination with a longer residence time at the administration site resulting in more desirable therapeutic effects. AREAS COVERED The present review evaluates the importance of the combination of mucoadhesive and in situ gelling polymers along with mechanisms of in situ gelation and mucoadhesion. In addition, an overview about recent applications in mucosal drug delivery is provided. EXPERT OPINION In situ gelling and mucoadhesive polymers proved to be essential excipients in order to prolong the mucosal residence time of drug delivery systems. Due to this prolonged residence time both local and systemic therapeutic efficacy of numerous drugs can be substantially improved. Depending on the site of administration and the incorporated drug, combinations of different polymers with in situ gelling and mucoadhesive properties are needed to keep the delivery system as long as feasible at the target site.
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Affiliation(s)
- Forouhe Zahir-Jouzdani
- a Department of Pharmaceutical Technology , Institute of Pharmacy, University of Innsbruck , Innsbruck , Austria.,b Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Julian Dominik Wolf
- a Department of Pharmaceutical Technology , Institute of Pharmacy, University of Innsbruck , Innsbruck , Austria.,c Thiomatrix Forschungs- und Beratungs GmbH, Research Center Innsbruck , Trientlgasse, Innsbruck , Austria
| | - Fatemeh Atyabi
- b Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Andreas Bernkop-Schnürch
- a Department of Pharmaceutical Technology , Institute of Pharmacy, University of Innsbruck , Innsbruck , Austria
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Kim MH, Park H, Park WH. Effect of pH and precursor salts on in situ formation of calcium phosphate nanoparticles in methylcellulose hydrogel. Carbohydr Polym 2018; 191:176-82. [DOI: 10.1016/j.carbpol.2018.03.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 01/11/2018] [Accepted: 03/13/2018] [Indexed: 01/10/2023]
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Kim MH, Kim BS, Park H, Lee J, Park WH. Injectable methylcellulose hydrogel containing calcium phosphate nanoparticles for bone regeneration. Int J Biol Macromol 2018; 109:57-64. [DOI: 10.1016/j.ijbiomac.2017.12.068] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/08/2017] [Accepted: 12/11/2017] [Indexed: 11/25/2022]
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Safwat E, Hassan ML, Saniour S, Zaki DY, Eldeftar M, Saba D, Zazou M. Injectable TEMPO-oxidized nanofibrillated cellulose/biphasic calcium phosphate hydrogel for bone regeneration. J Biomater Appl 2018; 32:1371-1381. [PMID: 29554839 DOI: 10.1177/0885328218763866] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Nanofibrillated cellulose, obtained from rice straw agricultural wastes was used as a substrate for the preparation of a new injectable and mineralized hydrogel for bone regeneration. Tetramethyl pyridine oxyl (TEMPO) oxidized nanofibrillated cellulose, was mineralized through the incorporation of a prepared and characterized biphasic calcium phosphate at a fixed ratio of 50 wt%. The TEMPO-oxidized rice straw nanofibrillated cellulose was characterized using transmission electron microscopy, Fourier transform infrared, and carboxylic content determination. The injectability and viscosity of the prepared hydrogel were evaluated using universal testing machine and rheometer testing, respectively. Cytotoxicity and alkaline phosphatase level tests on osteoblast like-cells for in vitro assessment of the biocompatibility were investigated. Results revealed that the isolated rice straw nanofibrillated cellulose is a nanocomposite of the cellulose nanofibers and silica nanoparticles. Rheological properties of the tested materials are suitable for use as injectable material and of nontoxic effect on osteoblast-like cells, as revealed by the positive alkaline phosphate assay. However, nanofibrillated cellulose/ biphasic calcium phosphate hydrogel showed higher cytotoxicity and lower bioactivity test results when compared to that of nanofibrillated cellulose.
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Affiliation(s)
- Engie Safwat
- 1 Restorative and Dental Materials Department, National Research Centre, Dokki, Giza, Egypt
| | - Mohammad L Hassan
- 2 Cellulose and Paper Department & Centre of Excellence for Advanced Sciences, Dokki, Giza, Egypt.,3 Egypt Nanotechnology Centre, Cairo University, El-Sheikh Zayed Campus, Egypt
| | - Sayed Saniour
- 4 Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt
| | - Dalia Yehia Zaki
- 1 Restorative and Dental Materials Department, National Research Centre, Dokki, Giza, Egypt
| | | | - Dalia Saba
- 4 Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt
| | - Mohamed Zazou
- 1 Restorative and Dental Materials Department, National Research Centre, Dokki, Giza, Egypt
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Kim MH, Park H, Nam HC, Park SR, Jung JY, Park WH. Injectable methylcellulose hydrogel containing silver oxide nanoparticles for burn wound healing. Carbohydr Polym 2017; 181:579-586. [PMID: 29254010 DOI: 10.1016/j.carbpol.2017.11.109] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/28/2017] [Accepted: 11/28/2017] [Indexed: 11/19/2022]
Abstract
A thermo-sensitive methylcellulose (MC) hydrogel containing silver oxide nanoparticles (NPs) was prepared via one-pot synthesis in which a silver acetate precursor salt (CH3COOAg) induces a salt-out effect in the MC solution. The silver oxide NPs were synthesized in situ from Ag+ ions during the MC hydrogelation, and the residual CH3COO- ions decreased the gelation temperature of the MC solution through the salt-out effect. The gelation behavior of the MC solution varied according to the CH3COOAg content and was monitored. Also, the formation and structure of the silver oxide NPs in the MC hydrogel was confirmed. From the results, silver oxide NPs was successfully incorporated in MC hydrogels, simultaneously, acetate ion which was counter ion of Ag was affected gelation behavior of Ag. Finally, the antimicrobial activity and wound healing effect was examined using the shaking flask method and burn wound test, respectively. The MC hydrogel with silver oxide NPs showed excellent antimicrobial activity and burn wound healing. Therefore, this thermo-responsive MC hydrogel has great potential as an injectable hydrogel for wound regeneration.
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Affiliation(s)
- Min Hee Kim
- Department of Advanced Organic Materials and Textile Engineering System, Chungnam National University, Daejeon 34134, South Korea
| | - Hanna Park
- Department of Advanced Organic Materials and Textile Engineering System, Chungnam National University, Daejeon 34134, South Korea
| | - Hyung Chan Nam
- Department of Advanced Organic Materials and Textile Engineering System, Chungnam National University, Daejeon 34134, South Korea
| | - Se Ra Park
- Department of Veterinary Medicine, Chungnam National University, Daejeon 43134, South Korea
| | - Ju-Young Jung
- Department of Veterinary Medicine, Chungnam National University, Daejeon 43134, South Korea.
| | - Won Ho Park
- Department of Advanced Organic Materials and Textile Engineering System, Chungnam National University, Daejeon 34134, South Korea.
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33
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Sun Y, Wang C, Chen Q, Liu H, Deng C, Ling P, Cui FZ. Effects of the bilayer nano-hydroxyapatite/mineralized collagen-guided bone regeneration membrane on site preservation in dogs. J Biomater Appl 2017; 32:242-256. [DOI: 10.1177/0885328217715150] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Yi Sun
- School of Stomatology, Wannan Medical college, WuHu, Anhui, PR China
| | - Chengyue Wang
- School of Stomatology, Wannan Medical college, WuHu, Anhui, PR China
| | - Qixin Chen
- School of Stomatology, Wannan Medical college, WuHu, Anhui, PR China
| | - Hai Liu
- School of Stomatology, Wannan Medical college, WuHu, Anhui, PR China
| | - Chao Deng
- School of Stomatology, Wannan Medical college, WuHu, Anhui, PR China
| | - Peixue Ling
- School of Stomatology, Wannan Medical college, WuHu, Anhui, PR China
| | - Fu-Zhai Cui
- School of Stomatology, Wannan Medical college, WuHu, Anhui, PR China
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