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Flechas Becerra C, Barrios Silva LV, Ahmed E, Bear JC, Feng Z, Chau DY, Parker SG, Halligan S, Lythgoe MF, Stuckey DJ, Patrick PS. X-Ray Visible Protein Scaffolds by Bulk Iodination. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306246. [PMID: 38145968 PMCID: PMC10933627 DOI: 10.1002/advs.202306246] [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: 09/01/2023] [Revised: 11/18/2023] [Indexed: 12/27/2023]
Abstract
Protein-based biomaterial use is expanding within medicine, together with the demand to visualize their placement and behavior in vivo. However, current medical imaging techniques struggle to differentiate between protein-based implants and surrounding tissue. Here a fast, simple, and translational solution for tracking transplanted protein-based scaffolds is presented using X-ray CT-facilitating long-term, non-invasive, and high-resolution imaging. X-ray visible scaffolds are engineered by selectively iodinating tyrosine residues under mild conditions using readily available reagents. To illustrate translatability, a clinically approved hernia repair mesh (based on decellularized porcine dermis) is labeled, preserving morphological and mechanical properties. In a mouse model of mesh implantation, implants retain marked X-ray contrast up to 3 months, together with an unchanged degradation rate and inflammatory response. The technique's compatibility is demonstrated with a range of therapeutically relevant protein formats including bovine, porcine, and jellyfish collagen, as well as silk sutures, enabling a wide range of surgical and regenerative medicine uses. This solution tackles the challenge of visualizing implanted protein-based biomaterials, which conventional imaging methods fail to differentiate from endogenous tissue. This will address previously unanswered questions regarding the accuracy of implantation, degradation rate, migration, and structural integrity, thereby accelerating optimization and safe translation of therapeutic biomaterials.
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Affiliation(s)
- Carlos Flechas Becerra
- Centre for Advanced Biomedical ImagingDivision of MedicineUniversity College LondonPaul O'Gorman Building, 72 Huntley StreetLondonWC1E 6DDUK
| | - Lady V. Barrios Silva
- Division of Biomaterials and Tissue EngineeringEastman Dental InstituteUniversity College LondonRoyal Free HospitalRowland Hill StreetLondonNW3 2PFUK
| | - Ebtehal Ahmed
- Centre for Advanced Biomedical ImagingDivision of MedicineUniversity College LondonPaul O'Gorman Building, 72 Huntley StreetLondonWC1E 6DDUK
| | - Joseph C. Bear
- School of Life SciencePharmacy & ChemistryKingston UniversityPenrhyn RoadKingston upon ThamesKT1 2EEUK
| | - Zhiping Feng
- Centre for Advanced Biomedical ImagingDivision of MedicineUniversity College LondonPaul O'Gorman Building, 72 Huntley StreetLondonWC1E 6DDUK
| | - David Y.S. Chau
- Division of Biomaterials and Tissue EngineeringEastman Dental InstituteUniversity College LondonRoyal Free HospitalRowland Hill StreetLondonNW3 2PFUK
| | - Samuel G. Parker
- Centre for Medical Imaging, Division of MedicineUniversity College London UCLCharles Bell House, 43–45 Foley StreetLondonW1W 7TSUK
| | - Steve Halligan
- Centre for Medical Imaging, Division of MedicineUniversity College London UCLCharles Bell House, 43–45 Foley StreetLondonW1W 7TSUK
| | - Mark F. Lythgoe
- Centre for Advanced Biomedical ImagingDivision of MedicineUniversity College LondonPaul O'Gorman Building, 72 Huntley StreetLondonWC1E 6DDUK
| | - Daniel J. Stuckey
- Centre for Advanced Biomedical ImagingDivision of MedicineUniversity College LondonPaul O'Gorman Building, 72 Huntley StreetLondonWC1E 6DDUK
| | - P. Stephen Patrick
- Centre for Advanced Biomedical ImagingDivision of MedicineUniversity College LondonPaul O'Gorman Building, 72 Huntley StreetLondonWC1E 6DDUK
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Suzuki M, Kimura T, Nakano Y, Kobayashi M, Okada M, Matsumoto T, Nakamura N, Hashimoto Y, Kishida A. Preparation of mineralized pericardium by alternative soaking for soft-hard interregional tissue application. J Biomed Mater Res A 2023; 111:198-208. [PMID: 36069375 DOI: 10.1002/jbm.a.37445] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 08/10/2022] [Accepted: 08/22/2022] [Indexed: 01/10/2023]
Abstract
Recent applications of decellularized tissues include the ectopic use of sheets and powders for three-dimensional (3D) tissue reconstruction. Decellularized tissues are modified (or fabricated) with the desired functions for application to the target (transplanted or used) tissue, including soft-hard interregional tissues, such as ligaments, tendons, and periodontal ligaments. This study aimed to prepare a mineralized decellularized pericardium to construct a soft-hard interregional tissue by 3D fabrication of decellularized pericardium, for example, rolling up to a cylindrical form. The decellularized pericardial tissue was prepared using the high hydrostatic pressurization (HHP) and surfactants method. The pericardium consisted of bundles of aligned fibers, and the bundles were slightly disordered when prepared with the surfactant decellularization method compared with that prepared using the HHP decellularization method. Mineralization of the decellularized pericardium was performed using an alternate soaking process with various cycles. The surface of the decellularized pericardium was covered with calcium phosphate precipitates, which accumulated on the surface with an increasing number of soaking cycles. The inside of the HHP decellularized pericardium was mineralized uniformly, whereas the mineralization of the decellularized pericardium decreased toward the interior. These findings suggest that the decellularization method strongly affects the structure and mineralized parts of the decellularized pericardium. The mineralized decellularized pericardium could be a candidate material for reconstructing alternative interregional tissues, such as ligaments and tendons.
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Affiliation(s)
- Mika Suzuki
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tsuyoshi Kimura
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuta Nakano
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mako Kobayashi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Masahiro Okada
- Department of Biomaterials, Okayama University, Okayama, Japan
| | | | - Naoko Nakamura
- Department of Bioscience and Engineering, Shibaura Institute of Technology, Tokyo, Japan
| | - Yoshihide Hashimoto
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Akio Kishida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
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Filippou A, Damianou C. Experimental evaluation of high intensity focused ultrasound for fat reduction of ex vivo porcine adipose tissue. J Ultrasound 2022; 25:815-825. [PMID: 35106735 PMCID: PMC9705658 DOI: 10.1007/s40477-022-00663-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/12/2022] [Indexed: 10/19/2022] Open
Abstract
PURPOSE The present study was stimulated by the continuous growth of commercially available high intensity focused ultrasound (HIFU) systems for fat reduction. Herein, HIFU was utilised for fat ablation using a single-element ultrasonic transducer operating in thermal mode. METHODS The custom-made concave transducer that operates at 1.1 MHz was assessed on excised porcine adipose tissue for its ability to reduce fat. Ultrasonic sonications were executed on the adipose tissue utilising acoustical power between 14 and 75 W and sonication time in the range of 1-10 min. The mass of the adipose tissue sample was weighed afore and after ultrasonic sonications and the effect of the sonication on the mass change was recorded. RESULTS Mass change was linearly dependent with either increasing acoustical power or sonication time and was in the range of 0.46-1.9 g. High acoustical power of 62.5 W for a sonication time of 1 min and a power of 75 W for a sonication time of 5 min, respectively resulted in the formation of a lesion or possible cavitation on the piece of excised adipose tissue. CONCLUSION The study demonstrated the efficacy of the proposed transducer in achieving a reduction of excised fat tissue. The present findings indicate the potential use of the transducer in a HIFU system indicated for the reduction of subcutaneous adipose tissue where increased values of acoustical power can result in increased amounts of fat reduction.
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Affiliation(s)
- Antria Filippou
- Department of Electrical Engineering, Computer Engineering and Informatics, Cyprus University of Technology, 30 Archbishop Kyprianou Street, 3036, Limassol, Cyprus
| | - Christakis Damianou
- Department of Electrical Engineering, Computer Engineering and Informatics, Cyprus University of Technology, 30 Archbishop Kyprianou Street, 3036, Limassol, Cyprus.
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Wang Y, Sun M, Qiao D, Li J, Wang Y, Liu W, Bunt C, Liu H, Liu J, Yang X. Graft copolymer of sodium carboxymethyl cellulose and polyether polyol (CMC-g-TMN-450) improves the crosslinking degree of polyurethane for coated fertilizers with enhanced controlled release characteristics. Carbohydr Polym 2021; 272:118483. [PMID: 34420742 DOI: 10.1016/j.carbpol.2021.118483] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/16/2021] [Accepted: 07/21/2021] [Indexed: 11/16/2022]
Abstract
Novel superhydrophobic sodium carboxymethyl cellulose (CMC) modified polyurethane (MPU) was developed as the membrane material for controlled-release fertilizer (CRF) by cross-linking polymerization of 4,4'-diphenylmethane diisocyanate (MDI) and CMC-based modified polyol (CMP) which was made by grafting CMC onto polyether polyol (TMN-450). The modified polyurethane coated fertilizer (MPUCF) was prepared by using MPU as the membrane material through a fluidized bed device. Analysis results of 13C NMR showed that the coatings of PUCF and MPUCF were prepared by connecting hydroxyl to isocyanate groups to form a carbamate. MPU had lower water absorption rates than PU, and MPUCF coating showed excellent hydrophobicity. Scanning electron microscope (SEM) revealed that MPUCF coating surface was much more smooth and flat than that of PUCF. Furthermore, the nitrogen (N) release longevity of MPUCF can increased to 140 days when the coating rate was 5%. It is concluded that MPU was an excellent superhydrophobic coating material for CRF.
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Affiliation(s)
- Yang Wang
- Department of Basic Courses, Shanxi Agricultural University (Shanxi Academy of Agricultural Sciences), Taigu, Shanxi 030801, China
| | - Mingxue Sun
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Dan Qiao
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Juan Li
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yajing Wang
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Weiyi Liu
- Faculty of Agriculture and Life Sciences, Lincoln University, PO Box 85084, Lincoln 7608, New Zealand
| | - Craig Bunt
- Faculty of Agriculture and Life Sciences, Lincoln University, PO Box 85084, Lincoln 7608, New Zealand
| | - Hongxia Liu
- Department of Basic Courses, Shanxi Agricultural University (Shanxi Academy of Agricultural Sciences), Taigu, Shanxi 030801, China
| | - Jinlong Liu
- Department of Basic Courses, Shanxi Agricultural University (Shanxi Academy of Agricultural Sciences), Taigu, Shanxi 030801, China.
| | - Xiangdong Yang
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Mendibil U, Ruiz-Hernandez R, Retegi-Carrion S, Garcia-Urquia N, Olalde-Graells B, Abarrategi A. Tissue-Specific Decellularization Methods: Rationale and Strategies to Achieve Regenerative Compounds. Int J Mol Sci 2020; 21:E5447. [PMID: 32751654 PMCID: PMC7432490 DOI: 10.3390/ijms21155447] [Citation(s) in RCA: 142] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 07/25/2020] [Accepted: 07/28/2020] [Indexed: 02/07/2023] Open
Abstract
The extracellular matrix (ECM) is a complex network with multiple functions, including specific functions during tissue regeneration. Precisely, the properties of the ECM have been thoroughly used in tissue engineering and regenerative medicine research, aiming to restore the function of damaged or dysfunctional tissues. Tissue decellularization is gaining momentum as a technique to obtain potentially implantable decellularized extracellular matrix (dECM) with well-preserved key components. Interestingly, the tissue-specific dECM is becoming a feasible option to carry out regenerative medicine research, with multiple advantages compared to other approaches. This review provides an overview of the most common methods used to obtain the dECM and summarizes the strategies adopted to decellularize specific tissues, aiming to provide a helpful guide for future research development.
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Affiliation(s)
- Unai Mendibil
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastian, Spain; (U.M.); (R.R.-H.); (S.R.-C.)
- TECNALIA, Basque Research and Technology Alliance (BRTA), 20009 Donostia-San Sebastian, Spain; (N.G.-U.); (B.O.-G.)
| | - Raquel Ruiz-Hernandez
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastian, Spain; (U.M.); (R.R.-H.); (S.R.-C.)
| | - Sugoi Retegi-Carrion
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastian, Spain; (U.M.); (R.R.-H.); (S.R.-C.)
| | - Nerea Garcia-Urquia
- TECNALIA, Basque Research and Technology Alliance (BRTA), 20009 Donostia-San Sebastian, Spain; (N.G.-U.); (B.O.-G.)
| | - Beatriz Olalde-Graells
- TECNALIA, Basque Research and Technology Alliance (BRTA), 20009 Donostia-San Sebastian, Spain; (N.G.-U.); (B.O.-G.)
| | - Ander Abarrategi
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastian, Spain; (U.M.); (R.R.-H.); (S.R.-C.)
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
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