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Sarrami P, Karbasi S, Farahbakhsh Z, Bigham A, Rafienia M. Fabrication and characterization of novel polyhydroxybutyrate-keratin/nanohydroxyapatite electrospun fibers for bone tissue engineering applications. Int J Biol Macromol 2022; 220:1368-1389. [PMID: 36116596 DOI: 10.1016/j.ijbiomac.2022.09.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/11/2022] [Accepted: 09/13/2022] [Indexed: 11/19/2022]
Abstract
The role of scaffolds in bone regeneration is of great importance. Here, the electrospun scaffolds of poly (3-hydroxybutyrate)-keratin (PHB-K)/nanohydroxyapatite (nHA) with different morphologies (long nanorods (HAR) and very short nanorods (HAP)) and weight percentages (up to 10 w/w%) of nHA were fabricated and characterized. The fibers integrity, the porosity of above 80%, and increase in pore size up to 16 μm were observed by adding nHA. The nanofibers crystallinity increased by 13.5 and 22.8% after the addition of HAR and HAP, respectively. The scaffolds contact angle decreased by almost 20° and 40° after adding 2.5 w/w% HAR and HAP, respectively. The tensile strength of the scaffolds increased from 2.99 ± 0.3 MPa for PHB-K to 6.44 ± 0.16 and 9.27 ± 0.04 MPa for the scaffolds containing 2.5 w/w% HAR and HAP, respectively. After immersing the scaffolds into simulated body fluid (SBF), the Ca concentration decreased by 55% for HAR- and 73% for HAP-containing scaffolds, showing the bioactivity of nHA-containing scaffolds. The results of cell attachment, proliferation, and viability of MG-63 cells cultured on the nanocomposites showed the positive effects of nHA. The results indicate that the nanocomposite scaffolds, especially HAP-containing ones, can be suitable for bone tissue engineering applications.
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Affiliation(s)
- Pooriya Sarrami
- Department of Biomaterials, Nanotechnology and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Saeed Karbasi
- Department of Biomaterials, Nanotechnology and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zohreh Farahbakhsh
- Department of Medical Parasitology and Mycology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ashkan Bigham
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Viale J.F. Kennedy 54 - Mostra d'Oltremare pad. 20, 80125 Naples, Italy
| | - Mohammad Rafienia
- Biosensor Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
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2
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Polymer Texture Influences Cell Responses in Osteogenic Microparticles. Cell Mol Bioeng 2022; 15:409-423. [DOI: 10.1007/s12195-022-00729-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 06/27/2022] [Indexed: 11/25/2022] Open
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3
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Alias M, Hamzah S, Saidin J, Yatim NI, Che Harun MH, Wan Mohamad WAF, Hairom NHH, Ali A, Ali N. Integration of hydroxyapatite from fish scales and polyethersulfone membrane for protease separation from Bacillus subtilis. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1948866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Maslinda Alias
- Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | - Sofiah Hamzah
- Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | - Jasnizat Saidin
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | - Norhafiza Ilyana Yatim
- Higher Institution Centre of Excellence (Hicoe), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | - Mohammad Hakim Che Harun
- Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | | | - Nur Hanis Hayati Hairom
- Microelectronics and Nanotechnology-Shamsuddin Research Center, Institute for Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat, Malaysia
- Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Muar, Malaysia
| | - Asmadi Ali
- Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | - Nora’aini Ali
- Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
- Higher Institution Centre of Excellence (Hicoe), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
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4
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Gaihre B, Liu X, Lee Miller A, Yaszemski M, Lu L. Poly(Caprolactone Fumarate) and Oligo[Poly(Ethylene Glycol) Fumarate]: Two Decades of Exploration in Biomedical Applications. POLYM REV 2020. [DOI: 10.1080/15583724.2020.1758718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bipin Gaihre
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - A. Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Michael Yaszemski
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
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5
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Ahmadi T, Monshi A, Mortazavi V, Fathi MH, Sharifi S, Kharaziha M, Khazdooz L, Zarei A, Taghian Dehaghani M. Fabrication and characterization of polycaprolactone fumarate/gelatin-based nanocomposite incorporated with silicon and magnesium co-doped fluorapatite nanoparticles using electrospinning method. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 106:110172. [DOI: 10.1016/j.msec.2019.110172] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 09/02/2019] [Accepted: 09/05/2019] [Indexed: 10/26/2022]
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6
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Liu X, Fundora KA, Zhou Z, Miller AL, Lu L. Composite Hydrogel Embedded with Porous Microspheres for Long-Term pH-Sensitive Drug Delivery. Tissue Eng Part A 2019; 25:172-182. [PMID: 30152721 PMCID: PMC6388718 DOI: 10.1089/ten.tea.2018.0071] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 06/21/2018] [Indexed: 11/12/2022] Open
Abstract
IMPACT STATEMENT A composite hydrogel embedded with porous microspheres fabricated by phase separation methods was developed and showed excellent long-term anticancer drug delivery capability to cancer cells.
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Affiliation(s)
- Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota
- Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Kevin A. Fundora
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Zifei Zhou
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Alan Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota
- Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota
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7
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Wu W, Liu X, Zhou Z, Miller AL, Lu L. Three-dimensional porous poly(propylene fumarate)-co-poly(lactic-co-glycolic acid) scaffolds for tissue engineering. J Biomed Mater Res A 2018; 106:2507-2517. [PMID: 29707898 PMCID: PMC9933994 DOI: 10.1002/jbm.a.36446] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 04/13/2018] [Accepted: 04/25/2018] [Indexed: 12/25/2022]
Abstract
Three-dimensional structural scaffolds have played an important role in tissue engineering, especially broad applications in areas such as regenerative medicine. We have developed novel biodegradable porous poly(propylene fumarate)-co-poly(lactic-co-glycolic acid) (PPF-co-PLGA) scaffolds using thermally induced phase separation, and determined the effects of critical parameters such as copolymer concentration (6, 8, and 10 wt %) and the binary solvent ratio of dioxane:water (78/22, 80/20, 82/18 wt/wt %) on the fabrication process. The cloud-point temperatures of PPF-co-PLGA changed in parallel with increasing copolymer concentration, but inversely with increasing dioxane content. The compressive moduli of the scaffolds increased with greater weight composition and dioxane:water ratio. Scaffolds formed using high copolymer concentrations and solvent ratios exhibited preferable biomineralization. All samples showed biodegradation capability in both accelerated solution and phosphate-buffered saline (PBS). Cell toxicity testing indicated that the scaffolds had good biocompatibility with bone and nerve cells, which adhered well to the scaffolds. Variations in the copolymer concentration and solvent ratio exercised a remarkable influence on morphology, mechanical properties, biomineralization, and biodegradation, but not on the cell viability and adhesion of the cross-linked scaffolds. An 8 to 10 wt % solute concentration and 80/20 to 82/18 wt/wt dioxane:water ratio were the optimum parameters for scaffold fabrication. PPF-co-PLGA scaffolds thus possess several promising prospects for tissue engineering applications. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A:2507-2517, 2018.
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Affiliation(s)
- Wei Wu
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA,Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA,Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA,Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA
| | - Zifei Zhou
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA,Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA,Department of Orthopedic Surgery, Shanghai East Hospital, Tongji University, Shanghai, 200120, China
| | - A. Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA,Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota, MN, 55905, USA,Corresponding Author: Lichun Lu, Ph.D, Professor of Biomedical Engineering and Orthopedics, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905 USA, Phone: (507)-284-2267, Fax: 507-284-5075,
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8
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Liang H, Sheng F, Zhou B, Pei Y, Li B, Li J. Phosphoprotein/chitosan electrospun nanofibrous scaffold for biomineralization. Int J Biol Macromol 2017; 102:218-224. [PMID: 28392386 DOI: 10.1016/j.ijbiomac.2017.04.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 01/16/2023]
Abstract
In this study, negatively charged phosvitin (PV) and positively charged chitosan (CS) were alternately deposited on negatively charged cellulose mats via layer-by-layer (LBL) self-assembly technique. Morphologies of the LBL films coating mats were observed by scanning electron microscope (SEM). Afterwards, in vitro biomimetic mineralization was carried out through incubation of the fibrous mats in a simulated body fluid (SBF) solution for different time. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) were used to characterize the morphology and structure of the deposited mineral phase on the scaffolds. In addition, the cell culture experiment demonstrated that the scaffolds with the LBL structured films were of good cell compatibility for MC3T3-E1 cells. Moreover, the cell proliferation was affected by the number of deposition layers and the composition of outer-most layer. Confocal laser scanning microscopy (CLSM) and SEM imaging revealed a good performance of cell adhesion and spreading of MC3T3-E1 cells on the surface of biocomposite scaffold. So CS/PV nanofibrous mats were satisfactory for the composite to be used in bioapplications.
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Affiliation(s)
- Hongshan Liang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China
| | - Feng Sheng
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, The College of Life Sciences, Hubei University, Wuhan 430062, China
| | - Bin Zhou
- College of Food Science and Technology, Shanghai Ocean University, LinGang New City, Shanghai 201306, China
| | - Yaqiong Pei
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China
| | - Jing Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China.
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9
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Xiao Y, Lang S, Zhou M, Qin J, Yin R, Gao J, Heise A, Lang M. A highly stretchable bioelastomer prepared by UV curing of liquid-like poly(4-methyl-ε-caprolactone) precursors. J Mater Chem B 2017; 5:595-603. [DOI: 10.1039/c6tb02507b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
UV curing of PMCL precursors in the absence of any solvent or heating led to highly stretchable bioelastomers.
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Affiliation(s)
- Yan Xiao
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Sihuan Lang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Miaomiao Zhou
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Jing Qin
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Rui Yin
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Jingming Gao
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Andreas Heise
- Department of Pharmaceutical and Medicinal Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
| | - Meidong Lang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
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10
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Trombetta R, Inzana JA, Schwarz EM, Kates SL, Awad HA. 3D Printing of Calcium Phosphate Ceramics for Bone Tissue Engineering and Drug Delivery. Ann Biomed Eng 2016; 45:23-44. [PMID: 27324800 DOI: 10.1007/s10439-016-1678-3] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 06/08/2016] [Indexed: 01/16/2023]
Abstract
Additive manufacturing, also known as 3D printing, has emerged over the past 3 decades as a disruptive technology for rapid prototyping and manufacturing. Vat polymerization, powder bed fusion, material extrusion, and binder jetting are distinct technologies of additive manufacturing, which have been used in a wide variety of fields, including biomedical research and tissue engineering. The ability to print biocompatible, patient-specific geometries with controlled macro- and micro-pores, and to incorporate cells, drugs and proteins has made 3D-printing ideal for orthopaedic applications, such as bone grafting. Herein, we performed a systematic review examining the fabrication of calcium phosphate (CaP) ceramics by 3D printing, their biocompatibility in vitro, and their bone regenerative potential in vivo, as well as their use in localized delivery of bioactive molecules or cells. Understanding the advantages and limitations of the different 3D printing approaches, CaP materials, and bioactive additives through critical evaluation of in vitro and in vivo evidence of efficacy is essential for developing new classes of bone graft substitutes that can perform as well as autografts and allografts or even surpass the performance of these clinical standards.
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Affiliation(s)
- Ryan Trombetta
- Department of Biomedical Engineering, University of Rochester, Robert B. Goergen Hall, Rochester, NY, 14627, USA.,Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA
| | - Jason A Inzana
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA.,AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos, Switzerland
| | - Edward M Schwarz
- Department of Biomedical Engineering, University of Rochester, Robert B. Goergen Hall, Rochester, NY, 14627, USA.,Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA.,Department of Orthopedics, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, 14642, USA
| | - Stephen L Kates
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA.,Department of Orthopaedic Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
| | - Hani A Awad
- Department of Biomedical Engineering, University of Rochester, Robert B. Goergen Hall, Rochester, NY, 14627, USA. .,Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA. .,Department of Orthopedics, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, 14642, USA.
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11
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Cai B, Zou Q, Zuo Y, Li L, Yang B, Li Y. Fabrication and cell viability of injectable n-HA/chitosan composite microspheres for bone tissue engineering. RSC Adv 2016. [DOI: 10.1039/c6ra06594e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The n-HA/CS microspheres exhibit good properties while supporting cell growth, thus acting as a promising injectable matrix for bone tissue engineering.
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Affiliation(s)
- Bin Cai
- Research Center for Nano-Biomaterial
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Qin Zou
- Research Center for Nano-Biomaterial
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Yi Zuo
- Research Center for Nano-Biomaterial
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Limei Li
- Research Center for Nano-Biomaterial
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Boyuan Yang
- Research Center for Nano-Biomaterial
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Yubao Li
- Research Center for Nano-Biomaterial
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
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12
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Liu X, Chen W, Gustafson CT, Miller AL, Waletzki BE, Yaszemski MJ, Lu L. Tunable tissue scaffolds fabricated by in situ crosslink in phase separation system. RSC Adv 2015; 5:100824-100833. [PMID: 26989479 DOI: 10.1039/c5ra19406g] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Three-dimensional (3-D) scaffolds with intrinsic porous structures are desirable in various tissue regeneration applications. In this study, a unique method that combines thermally induced phase separation with a photocrosslinking process was developed for the fabrication of 3-D crosslinked polymer scaffolds with densely interconnected porous structures. Biodegradable poly(propylene fumarate)-co-poly(L-lactic acid) with crosslinkable fumarate bonds were used as the structural polymer material and a dioxane/water binary system was applied for the phase separation. By altering the polymer composition (9, 5 and 3 wt%), different types of scaffolds with distinct morphology, mechanical strength, degradation rate, cell growth and morphology, and extracellular matrix production were fabricated. These crosslinked 3-D porous scaffolds with tunable strength and biological responses show promise for potential applications in regenerative therapies, including bone and neural tissue engineering.
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Affiliation(s)
- Xifeng Liu
- Tissue Engineering and Biomaterials Laboratory, Departments of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Wenjian Chen
- Tissue Engineering and Biomaterials Laboratory, Departments of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Carl T Gustafson
- Tissue Engineering and Biomaterials Laboratory, Departments of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - A Lee Miller
- Tissue Engineering and Biomaterials Laboratory, Departments of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Brian E Waletzki
- Tissue Engineering and Biomaterials Laboratory, Departments of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael J Yaszemski
- Tissue Engineering and Biomaterials Laboratory, Departments of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Lichun Lu
- Tissue Engineering and Biomaterials Laboratory, Departments of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
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13
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Dziadek M, Menaszek E, Zagrajczuk B, Pawlik J, Cholewa-Kowalska K. New generation poly(ε-caprolactone)/gel-derived bioactive glass composites for bone tissue engineering: Part I. Material properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 56:9-21. [DOI: 10.1016/j.msec.2015.06.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 05/04/2015] [Accepted: 06/09/2015] [Indexed: 02/06/2023]
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14
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Liu X, Miller AL, Waletzki BE, Mamo TK, Yaszemski MJ, Lu L. Hydrolysable core crosslinked particle for receptor-mediated pH-sensitive anticancer drug delivery. NEW J CHEM 2015; 39:8840-8847. [PMID: 27134519 PMCID: PMC4846283 DOI: 10.1039/c5nj01404b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Biodegradable micelle systems with both extracellular stabilities and specific targeting properties are highly desirable for anti-cancer drug delivery. Here, we report a biodegradable and crosslinkable poly(propylene fumarate)-co-poly(lactide-co-glycolide)-co-poly(ethylene glycol) (PPF-PLGA-PEG) copolymer conjugated with folate (FA) molecules for receptor-mediated delivery of doxorubicin. Micelles with folate ligands on surface and fumarate bonds within the core were self-assembled and crosslinked, which exhibited better stability against potential physiological conditions during and after drug administration. A pH sensitive drug release profile was observed showing robust release at acidic environment due to the ester hydrolysis of PLGA (50:50). Further, micelles with folate ligands on surface showed strong targeting ability and therapeutic efficacy through receptor-mediated endocytosis, as evidenced by efficacious cancer killing and fatal DNA damage. These results imply promising potential for ligand-conjugated core crosslinked PPF-PLGA-PEG-FA micelles as carrier system for targeted anti-cancer drug delivery.
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Affiliation(s)
- Xifeng Liu
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - A. Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Brian E. Waletzki
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Tewodros K. Mamo
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael J. Yaszemski
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Lichun Lu
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
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15
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Laser Annealing for Gas-Dynamical Spraying of HA Coating upon a Titanium Surface. CRYSTALS 2015. [DOI: 10.3390/cryst5040447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Rodenas-Rochina J, Vidaurre A, Castilla Cortázar I, Lebourg M. Effects of hydroxyapatite filler on long-term hydrolytic degradation of PLLA/PCL porous scaffolds. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2015.04.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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17
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Liu X, Miller AL, Yaszemski MJ, Lu L. Biodegradable and crosslinkable PPF-PLGA-PEG self-assembled nanoparticles dual-decorated with folic acid ligands and rhodamine B fluorescent probes for targeted cancer imaging. RSC Adv 2015; 5:33275-33282. [PMID: 35330847 PMCID: PMC8942413 DOI: 10.1039/c5ra04096e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2023] Open
Abstract
Novel biodegradable and crosslinkable copolymers of hydrophobic poly(propylene fumarate)-co-poly(lactic-co-glycolic acid) (PPF-PLGA) linked with hydrophilic poly(ethylene glycol) (PEG), namely PPF-PLGA-PEG, were developed and fabricated into core-shell nanoparticles through self-assembly and photocrosslinking. A fluorescent probe, rhodamine B (RhB), was conjugated to the end of the copolymer chain (PPF-PLGA-PEG-RhB), which allows tracking of the nanoparticles through visualizing the fluorescence probe. Folic acid (FA) ligand was conjugated to another series of chains (PPF-PLGA-PEG-FA) for targeted delivery of the nanoparticles to the tumor sites by binding to the ubiquitously overexpressed FA receptors on tumor cells. Our results showed that PPF-PLGA-PEG nanoparticles incorporated with RhB fluorescence probes and FA tumor binding ligands have specific cancer cell targeting and imaging abilities. These crosslinkable nanoparticles are potentially useful to serve as a platform for conjugation of fluorescence probes as well as various antibodies and peptides for cancer targeted imaging or drug delivery.
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Affiliation(s)
- Xifeng Liu
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - A Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael J Yaszemski
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Lichun Lu
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
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Henry MG, Cai L, Liu X, Zhang L, Dong J, Chen L, Wang Z, Wang S. Roles of hydroxyapatite allocation and microgroove dimension in promoting preosteoblastic cell functions on photocured polymer nanocomposites through nuclear distribution and alignment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2851-60. [PMID: 25710252 DOI: 10.1021/la504994e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This study clarifies how hydroxyapatite (HA) allocation and microgroove dimension affect mouse preosteoblastic MC3T3-E1 cell functions on microgrooved substrates of polymer nanocomposites. Using replica molding from micromachined silicon wafer templates, we fabricated photocured poly(ε-caprolactone) triacrylate (PCLTA)/HA nanocomposite substrates with parallel microgrooves (two groove widths of 5 and 15 μm and one groove depth of 5 μm). Four types of microgrooved substrates were made: "homogeneous" ones of PCLTA and PCLTA/HA with uniform distribution and two "heterogeneous" laminated microgrooved substrates with HA only in the PCLTA matrix in the ridges or bottom. These substrates were used to regulate MC3T3-E1 cell attachment, proliferation, alignment, nuclear circularity and distribution, and mineralization. MC3T3-E1 cell attachment and proliferation were much higher on the microgrooved substrates of PCLTA/HA than on those of PCLTA, in particular, on the 5 μm wide microgrooved substrate with PCLTA/HA ridges and PCLTA bottom. The shape and distribution of MC3T3-E1 cytoskeleton and nuclei were altered by the substrate topography and HA allocation. For 5 μm wide heterogeneous microgrooved substrates with HA only in the ridges, MC3T3-E1 cells exhibited better spreading perpendicular to the microgrooves but tended to extend along the microgrooves containing HA in the bottom. The widest cells and the roundest/largest cell nuclei were observed on the heterogeneous substrate with PCLTA/HA ridges, while the narrowest cells with the best elongation were found on the homogeneous PCLTA/HA substrate. The trend in MC3T3-E1 cell mineralization on the substrates was consistent with that in cell/nuclear elongation. Osteocalcin mRNA expression was significantly higher on the PCLTA/HA substrates than on the PCLTA ones and also on the microgrooved substrates of PCLTA/HA than on the flat ones, regardless of the groove width of 5 or 15 μm.
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Affiliation(s)
- Michael G Henry
- Department of Materials Science and Engineering, The University of Tennessee , Knoxville, Tennessee 37996, United States
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19
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Liu X, Miller AL, Waletzki BE, Yaszemski MJ, Lu L. Novel biodegradable poly(propylene fumarate)- co-poly(l-lactic acid) porous scaffolds fabricated by phase separation for tissue engineering applications. RSC Adv 2015; 5:21301-21309. [PMID: 26989483 PMCID: PMC4792309 DOI: 10.1039/c5ra00508f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Scaffolds with intrinsically interconnected porous structures are highly desirable in tissue engineering and regenerative medicine. In this study, three-dimensional polymer scaffolds with highly interconnected porous structures were fabricated by thermally induced phase separation of novel synthesized biodegradable poly(propylene fumarate)-co-poly(l-lactic acid) in a dioxane/water binary system. Defined porous scaffolds were achieved by optimizing conditions to attain interconnected porous structures. The effect of phase separation parameters on scaffold morphology were investigated, including polymer concentration (1, 3, 5, 7, and 9%), quench time (1, 4, and 8 min), dioxane/water ratio (83/17, 85/15, and 87/13 wt/wt), and freeze temperature (-20, -80, and -196 °C). Interesting pore morphologies were created by adjusting these processing parameters, e.g., flower-shaped (5%; 85/15; 1 min; -80 °C), spherulite-like (5%; 85/15; 8 min; -80 °C), and bead-like (5%; 87/13; 1 min; -80 °C) morphology. Modulation of phase separation conditions also resulted in remarkable differences in scaffold porosities (81% to 91%) and thermal properties. Furthermore, scaffolds with varied mechanic strengths, degradation rates, and protein adsorption capabilities could be fabricated using the phase separation method. In summary, this work provides an effective route to generate multi-dimensional porous scaffolds that can be applied to a variety of hydrophobic polymers and copolymers. The generated scaffolds could potentially be useful for various tissue engineering applications including bone tissue engineering.
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Affiliation(s)
- Xifeng Liu
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - A. Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Brian E. Waletzki
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael J. Yaszemski
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Lichun Lu
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
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In-situ dispersed photopolymerization of cyclic acetals/hydroxyapatite composites: Effects of the content of hydroxyapatite. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 46:239-45. [DOI: 10.1016/j.msec.2014.10.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 08/16/2014] [Accepted: 10/19/2014] [Indexed: 11/22/2022]
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Enhanced bone cell functions on poly(ε-caprolactone) triacrylate networks grafted with polyhedral oligomeric silsesquioxane nanocages. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.06.057] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Wen Z, Zhang L, Chen C, Liu Y, Wu C, Dai C. A construction of novel iron-foam-based calcium phosphate/chitosan coating biodegradable scaffold material. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1022-31. [DOI: 10.1016/j.msec.2012.10.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 09/01/2012] [Accepted: 10/26/2012] [Indexed: 11/15/2022]
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23
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Kaivosoja E, Barreto G, Levón K, Virtanen S, Ainola M, Konttinen YT. Chemical and physical properties of regenerative medicine materials controlling stem cell fate. Ann Med 2012; 44:635-50. [PMID: 21568670 DOI: 10.3109/07853890.2011.573805] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Regenerative medicine is a multidisciplinary field utilizing the potential of stem cells and the regenerative capability of the body to restore, maintain, or enhance tissue and organ functions. Stem cells are unspecialized cells that can self-renew but also differentiate into several somatic cells when subjected the appropriate environmental cues. The ability to reliably direct stem cell fate would provide tremendous potential for basic research and clinical therapies. Proper tissue function and regeneration rely on the spatial and temporal control of biophysical and biochemical cues, including soluble molecules, cell-cell contacts, cell-extracellular matrix contacts, and physical forces. The mechanisms involved remain poorly understood. This review focuses on the stem cell-extracellular matrix interactions by summarizing the observations of the effects of material variables (such as overall architecture, surface topography, charge, ζ-potential, surface energy, and elastic modulus) on the stem cell fate. It also deals with the mechanisms underlying the effects of these extrinsic, material variables. Insight in the environmental interactions of the stem cells is crucial for the development of new material-based approaches for cell culture experiments and future experimental and clinical regenerative medicine applications.
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Affiliation(s)
- Emilia Kaivosoja
- Department of Medicine, Institute of Clinical Medicine, Helsinki University Central Hospital, Helsinki, Finland
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Wang K, Jesse S, Wang S. Banded Spherulitic Morphology in Blends of Poly (propylene fumarate) and Poly(ϵ
-caprolactone) and Interaction with MC3T3-E1 Cells. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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25
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Brismar TB, Grishenkov D, Gustafsson B, Härmark J, Barrefelt A, Kothapalli SVVN, Margheritelli S, Oddo L, Caidahl K, Hebert H, Paradossi G. Magnetite nanoparticles can be coupled to microbubbles to support multimodal imaging. Biomacromolecules 2012; 13:1390-9. [PMID: 22458325 DOI: 10.1021/bm300099f] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Microbubbles (MBs) are commonly used as injectable ultrasound contrast agent (UCA) in modern ultrasonography. Polymer-shelled UCAs present additional potentialities with respect to marketed lipid-shelled UCAs. They are more robust; that is, they have longer shelf and circulation life, and surface modifications are quite easily accomplished to obtain enhanced targeting and local drug delivery. The next generation of UCAs will be required to support not only ultrasound-based imaging methods but also other complementary diagnostic approaches such as magnetic resonance imaging or computer tomography. This work addresses the features of MBs that could function as contrast agents for both ultrasound and magnetic resonance imaging. The results indicate that the introduction of iron oxide nanoparticles (SPIONs) in the poly(vinyl alcohol) shell or on the external surface of the MBs does not greatly decrease the echogenicity of the host MBs compared with the unmodified one. The presence of SPIONs provides enough magnetic susceptibility to the MBs to accomplish good detectability both in vitro and in vivo. The distribution of SPIONs on the shell and their aggregation state seem to be key factors for the optimization of the transverse relaxation rate.
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Affiliation(s)
- Torkel B Brismar
- Department of Clinical Science, Intervention and Technology at Karolinska Institutet, Division of Medical Imaging and Technology, Stockholm, Sweden
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26
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Dadsetan M, Giuliani M, Wanivenhaus F, Brett Runge M, Charlesworth JE, Yaszemski MJ. Incorporation of phosphate group modulates bone cell attachment and differentiation on oligo(polyethylene glycol) fumarate hydrogel. Acta Biomater 2012; 8:1430-9. [PMID: 22277774 DOI: 10.1016/j.actbio.2011.12.031] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 12/02/2011] [Accepted: 12/30/2011] [Indexed: 11/25/2022]
Abstract
In this work, we have investigated the development of a synthetic hydrogel that contains a negatively charged phosphate group for use as a substrate for bone cell attachment and differentiation in culture. The photoreactive, phosphate-containing molecule, bis(2-(methacryloyloxy)ethyl)phosphate (BP), was incorporated into oligo(polyethylene glycol) fumarate hydrogel and the mechanical, rheological and thermal properties of the resulting hydrogels were characterized. Our results showed changes in hydrogel compression and storage moduli with incorporation of BP. The modification also resulted in decreased crystallinity as recorded by differential scanning calorimetry. Our data revealed that incorporation of BP improved attachment and differentiation of human fetal osteoblast (hFOB) cells in a dose-dependent manner. A change in surface chemistry and mineralization of the phosphate-containing surfaces verified by scanning electron microscopy and energy dispersive X-ray analysis was found to be important for hFOB cell attachment and differentiation. We also demonstrated that phosphate-containing hydrogels support attachment and differentiation of primary bone marrow stromal cells. These findings suggest that BP-modified hydrogels are capable of sustaining attachment and differentiation of both bone marrow stromal cells and osteoblasts that are critical for bone regeneration.
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27
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The influence of molecular weight on the properties of polyacetal/hydroxyapatite nanocomposites. Part 2. In vitro assessment. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-011-9788-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Farokhi M, Sharifi S, Shafieyan Y, Bagher Z, Mottaghitalab F, Hatampoor A, Imani M, Shokrgozar M. Porous crosslinked poly(ε-caprolactone fumarate)/nanohydroxyapatite composites for bone tissue engineering. J Biomed Mater Res A 2012; 100:1051-60. [DOI: 10.1002/jbm.a.33241] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Revised: 05/21/2011] [Accepted: 08/29/2011] [Indexed: 11/10/2022]
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29
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Reformulating polycaprolactone fumarate to eliminate toxic diethylene glycol: effects of polymeric branching and autoclave sterilization on material properties. Acta Biomater 2012; 8:133-43. [PMID: 21911087 DOI: 10.1016/j.actbio.2011.08.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 08/04/2011] [Accepted: 08/25/2011] [Indexed: 11/20/2022]
Abstract
Polycaprolactone fumarate (PCLF) is a cross-linkable derivative of polycaprolactone diol that has been shown to be an effective nerve conduit material that supports regeneration across segmental nerve defects and has warranted future clinical trials. Degradation of PCLF (PCLF(DEG)) releases toxic small molecules of diethylene glycol used as the initiator for the synthesis of polycaprolactone diol. In an effort to eliminate this toxic degradation product we present a strategy for the synthesis of PCLF from either propylene glycol (PCLF(PPD)) or glycerol (PCLF(GLY)). PCLF(PPD) is linear and resembles the previously studied PCLF(DEG), while PCLF(GLY) is branched and exhibits dramatically different material properties. The synthesis and characterization of their thermal, rheological, and mechanical properties are reported. The results show that the linear PCLF(PPD) has material properties similar to the previously studied PCLF(DEG). The branched PCLF(GLY) exhibits dramatically lower crystalline properties resulting in lower rheological and mechanical moduli, and is therefore a more compliant material. In addition, the question of an appropriate Food and Drug Administration approvable sterilization method is addressed. This study shows that autoclave sterilization of PCLF materials is an acceptable sterilization method for cross-linked PCLF and has minimal effect on the PCLF thermal and mechanical properties.
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30
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Methacryl-polyhedral oligomeric silsesquioxane as a crosslinker for expediting photo-crosslinking of Poly(propylene fumarate): Material properties and bone cell behavior. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.04.048] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Sharifi S, Shafieyan Y, Mirzadeh H, Bagheri-Khoulenjani S, Rabiee SM, Imani M, Atai M, Shokrgozar MA, Hatampoor A. Hydroxyapatite scaffolds infiltrated with thermally crosslinked polycaprolactone fumarate and polycaprolactone itaconate. J Biomed Mater Res A 2011; 98:257-67. [DOI: 10.1002/jbm.a.33108] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Accepted: 02/14/2011] [Indexed: 11/07/2022]
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32
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Exposed hydroxyapatite particles on the surface of photo-crosslinked nanocomposites for promoting MC3T3 cell proliferation and differentiation. Acta Biomater 2011; 7:2185-99. [PMID: 21284960 DOI: 10.1016/j.actbio.2011.01.034] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Revised: 12/17/2010] [Accepted: 01/25/2011] [Indexed: 11/20/2022]
Abstract
We present a systematic study for investigating the role of exposed hydroxyapatite (HA) nanoparticles in influencing surface characteristics and mouse pre-osteoblastic MC3T3-E1 cell behavior using nanocomposites prepared by photo-crosslinking poly(ε-caprolactone) diacrylate (PCLDA) with HA. PCLDA530 and PCLDA2000 synthesized from poly(ε-caprolactone) diol precursors with nominal molecular weights of 530 and 2000 g mol(-1) were used as the polymer matrices. Crosslinked PCLDA530 was amorphous while crosslinked PCLDA2000 was semi-crystalline. Crosslinked PCLDA/HA composites with different compositions of HA (10%, 20% and 30%) as well as crosslinked PCLDAs were characterized in terms of their composition-dependent physicochemical properties. The tensile, compressive and shear moduli were greatly enhanced by incorporating HA nanoparticles with the polymer matrices. The disk surfaces of original crosslinked PCLDA/HA nanocomposites were removed by cutting using a blade to expose HA nanoparticles that were embedded in the polymer substrates. The composition of HA was much higher on the cut surface, particularly in semi-crystalline crosslinked PCLDA2000/HA nanocomposites. The surface characteristics of original and cut crosslinked PCLDA/HA nanocomposites were compared and correlated with cell behavior on these nanocomposites. MC3T3-E1 cell attachment, proliferation and differentiation were significantly enhanced when the HA composition was increased in original crosslinked PCLDA/HA nanocomposites due to more bioactive HA, higher surface stiffness and rougher topography. More exposed HA on the surface of cut semi-crystalline PCLDA2000/HA nanocomposites resulted in improved hydrophilicity and significantly better MC3T3 cell attachment, proliferation and differentiation compared with the original surfaces. This study suggests that HA nanoparticles may not be fully exploited in polymer/HA nanocomposites where the top polymer surface covers the particles. The removal of this polymer layer can generate more desirable surfaces and osteoconductivity for bone repair and regeneration.
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34
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Parabolic dependence of material properties and cell behavior on the composition of polymer networks via simultaneously controlling crosslinking density and crystallinity. Biomaterials 2010; 31:7423-34. [DOI: 10.1016/j.biomaterials.2010.06.028] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 06/22/2010] [Indexed: 11/23/2022]
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35
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Wang K, Cai L, Hao F, Xu X, Cui M, Wang S. Distinct Cell Responses to Substrates Consisting of Poly(ε-caprolactone) and Poly(propylene fumarate) in the Presence or Absence of Cross-Links. Biomacromolecules 2010; 11:2748-59. [DOI: 10.1021/bm1008102] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kan Wang
- Departments of Materials Science and Engineering and Pathobiology, The University of Tennessee, Knoxville, Tennessee 37996
| | - Lei Cai
- Departments of Materials Science and Engineering and Pathobiology, The University of Tennessee, Knoxville, Tennessee 37996
| | - Feng Hao
- Departments of Materials Science and Engineering and Pathobiology, The University of Tennessee, Knoxville, Tennessee 37996
| | - Xuemin Xu
- Departments of Materials Science and Engineering and Pathobiology, The University of Tennessee, Knoxville, Tennessee 37996
| | - Meizhen Cui
- Departments of Materials Science and Engineering and Pathobiology, The University of Tennessee, Knoxville, Tennessee 37996
| | - Shanfeng Wang
- Departments of Materials Science and Engineering and Pathobiology, The University of Tennessee, Knoxville, Tennessee 37996
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Lee KW, Wang S, Dadsetan M, Yaszemski MJ, Lu L. Enhanced cell ingrowth and proliferation through three-dimensional nanocomposite scaffolds with controlled pore structures. Biomacromolecules 2010; 11:682-9. [PMID: 20112899 DOI: 10.1021/bm901260y] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present enhanced cell ingrowth and proliferation through cross-linked three-dimensional (3D) nanocomposite scaffolds fabricated using poly(propylene fumarate) (PPF) and hydroxyapatite (HA) nanoparticles. Scaffolds with controlled internal pore structures were produced from computer-aided design (CAD) models and solid freeform fabrication (SFF) technique, while those with random pore structures were fabricated by a NaCl leaching technique for comparison. The morphology and mechanical properties of scaffolds were characterized using scanning electron microscopy (SEM) and mechanical testing, respectively. Pore interconnectivity of scaffolds was assessed using X-ray microcomputed tomography (micro-CT) and 3D imaging analysis. In vitro cell studies have been performed using MC3T3-E1 mouse preosteoblasts and cultured scaffolds in a rotating-wall-vessel bioreactor for 4 and 7 days to assess cell attachment, viability, ingrowth depth, and proliferation. The mechanical properties of cross-linked nanocomposite scaffolds were not significantly different after adding HA or varying pore structures. However, pore interconnectivity of PPF/HA nanocomposite scaffolds with controlled pore structures has been significantly increased, resulting in enhanced cell ingrowth depth 7 days after cell seeding. Cell attachment and proliferation are also higher in PPF/HA nanocomposite scaffolds. These results suggest that cross-linked PPF/HA nanocomposite scaffolds with controlled pore structures may lead to promising bone tissue engineering scaffolds with excellent cell proliferation and ingrowth.
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Affiliation(s)
- Kee-Won Lee
- Tissue Engineering and Biomaterials Laboratory, Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
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Poly(ɛ-caprolactone) acrylates synthesized using a facile method for fabricating networks to achieve controllable physicochemical properties and tunable cell responses. POLYMER 2010. [DOI: 10.1016/j.polymer.2009.11.042] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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38
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Effects of composite formulation on the mechanical properties of biodegradable poly(propylene fumarate)/bone fiber scaffolds. INT J POLYM SCI 2010; 2010. [PMID: 22034584 DOI: 10.1155/2010/270273] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The objective of our study was to determine the effects of composite formulation on the compressive modulus and ultimate strength of a biodegradable, in situ polymerizable poly(propylene fumarate) (PPF) and bone fiber scaffold. The following parameters were investigated: the incorporation of bone fibers (either mineralized or demineralized), PPF molecular weight, N-vinyl pyrrolidinone (NVP) crosslinker amount, benzoyl peroxide (BP) initiator amount, and sodium chloride porogen amount. Eight formulations were chosen based on a resolution III two level fractional factorial design. The compressive modulus and ultimate strength of these formulations were measured on a materials testing machine. Absolute values for compressive modulus varied from 21.3 to 271 MPa and 2.8 to 358 MPa for dry and wet samples, respectively. The ultimate strength of the crosslinked composites varied from 2.1 to 20.3 MPa for dry samples and from 0.4 to 16.6 MPa for wet samples. Main effects of each parameter on the measured property were calculated. The incorporation of mineralized bone fibers and an increase in PPF molecular weight resulted in higher compressive modulus and ultimate strength. Both mechanical properties also increased as the amount of benzoyl peroxide increased or the NVP amount decreased in the formulation. Sodium chloride had a dominating effect on the increase of mechanical properties in dry samples but showed little effects in wet samples. Demineralization of bone fibers led to a decrease in the compressive modulus and ultimate strength. Our results suggest that bone fibers are appropriate as structural enforcement components in PPF scaffolds. The desired orthopaedic PPF scaffold might be obtained by changing a variety of composite formulation parameters.
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