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An enduring in vitro wound healing phase recipient by bioactive glass-graphene oxide nanocomposites. Sci Rep 2022; 12:16162. [PMID: 36171341 PMCID: PMC9519557 DOI: 10.1038/s41598-022-20575-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 09/15/2022] [Indexed: 11/27/2022] Open
Abstract
Bioactive glass (BG) is an interesting topic in soft tissue engineering because of its biocompatibility and bonding potential to increase fibroblast cell proliferation, synthesize growth factors, and stimulate granulation tissue development. The proposed BG with and without sodium (Na), prepared by the sol–gel method, is employed in wound healing studies. The BG/graphene oxide (GO) and BG (Na-free)/GO nanocomposites were investigated against fibroblast L929 cells in vitro; the 45S5 BG nanocomposites exhibited desired cell viability (80%), cell proliferation (30%), cell migration (25%), metabolic activity, and wound contraction due to extracellular matrix (ECM) production and enhanced protein release by fibroblast cells. Additionally, the antioxidant assays for BG, BG (Na-free), GO, and BG/GO, BG (Na-free)/GO were evaluated for effective wound healing properties. The results showed decreased inflammation sites in the wound area, assessed by the (2,2-diphenyl-1-picryl-hydrazyl-hydrate) (DPPH) assay with ~ 80% radical scavenging activity, confirming their anti-inflammatory and improved wound healing properties.
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Xu B, Li F, Zhang W, Su Y, Tang L, Li P, Joshi J, Yang A, Li D, Wang Z, Wang S, Xie J, Gu H, Zhu W. Identification of metabolic pathways underlying FGF1 and CHIR99021-mediated cardioprotection. iScience 2022; 25:104447. [PMID: 35707727 PMCID: PMC9189130 DOI: 10.1016/j.isci.2022.104447] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 04/16/2022] [Accepted: 05/18/2022] [Indexed: 12/05/2022] Open
Abstract
Acute myocardial infarction is a leading cause of death worldwide. We have previously identified two cardioprotective molecules — FGF1 and CHIR99021— that confer cardioprotection in mouse and pig models of acute myocardial infarction. Here, we aimed to determine if improved myocardial metabolism contributes to this cardioprotection. Nanofibers loaded with FGF1 and CHIR99021 were intramyocardially injected to ischemic myocardium of adult mice immediately following surgically induced myocardial infarction. Animals were euthanized 3 and 7 days later. Our data suggested that FGF1/CHIR99021 nanofibers enhanced the heart’s capacity to utilize glycolysis as an energy source and reduced the accumulation of branched-chain amino acids in ischemic myocardium. The impact of FGF1/CHIR99021 on metabolism was more obvious in the first three days post myocardial infarction. Taken together, these findings suggest that FGF1/CHIR99021 protects the heart against ischemic injury via improving myocardial metabolism which may be exploited for treatment of acute myocardial infarction in humans. FGF1/CHIR confer cardioprotection in myocardial infarction animals FGF1/CHIR enhance the capability of ischemic hearts to produce energy via glycolysis FGF1/CHIR reduce the abundance of branched chain amino acids in ischemic hearts This study reveals a novel approach to correct metabolic disorders in ischemic hearts
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Affiliation(s)
- Bing Xu
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ, USA 85259.,Department of Cardiology, Northern Jiangsu People's Hospital, Clinical Medical College, Yangzhou University, Yangzhou 225001, China
| | - Fan Li
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ, USA 85259.,Department of Kinesiology, South China Normal University, Guangzhou 510631, China
| | - Wenjing Zhang
- Center for Translational Science, Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Port St. Lucie, FL 34987, USA.,College of Health Solutions, Arizona State University, Phoenix, AZ 85287, USA
| | - Yajuan Su
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Ling Tang
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ, USA 85259
| | - Pengsheng Li
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ, USA 85259
| | - Jyotsna Joshi
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ, USA 85259
| | - Aaron Yang
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ, USA 85259
| | - Dong Li
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ, USA 85259
| | - Zhao Wang
- Department of Diabetes and Cancer Metabolism, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Shu Wang
- College of Health Solutions, Arizona State University, Phoenix, AZ 85287, USA
| | - Jingwei Xie
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Haiwei Gu
- Center for Translational Science, Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Port St. Lucie, FL 34987, USA.,College of Health Solutions, Arizona State University, Phoenix, AZ 85287, USA
| | - Wuqiang Zhu
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ, USA 85259
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López-González I, Zamora-Ledezma C, Sanchez-Lorencio MI, Tristante Barrenechea E, Gabaldón-Hernández JA, Meseguer-Olmo L. Modifications in Gene Expression in the Process of Osteoblastic Differentiation of Multipotent Bone Marrow-Derived Human Mesenchymal Stem Cells Induced by a Novel Osteoinductive Porous Medical-Grade 3D-Printed Poly(ε-caprolactone)/β-tricalcium Phosphate Composite. Int J Mol Sci 2021; 22:11216. [PMID: 34681873 PMCID: PMC8537621 DOI: 10.3390/ijms222011216] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/01/2021] [Accepted: 10/15/2021] [Indexed: 01/08/2023] Open
Abstract
In this work, we evaluated the influence of a novel hybrid 3D-printed porous composite scaffold based on poly(ε-caprolactone) (PCL) and β-tricalcium phosphate (β-TCP) microparticles in the process of adhesion, proliferation, and osteoblastic differentiation of multipotent adult human bone marrow mesenchymal stem cells (ah-BM-MSCs) cultured under basal and osteogenic conditions. The in vitro biological response of ah-BM-MSCs seeded on the scaffolds was evaluated in terms of cytotoxicity, adhesion, and proliferation (AlamarBlue Assay®) after 1, 3, 7, and 14 days of culture. The osteogenic differentiation was assessed by alkaline phosphatase (ALP) activity, mineralization (Alizarin Red Solution, ARS), expression of surface markers (CD73, CD90, and CD105), and reverse transcription-quantitative polymerase chain reaction (qRT-PCR) after 7 and 14 days of culture. The scaffolds tested were found to be bioactive and biocompatible, as demonstrated by their effects on cytotoxicity (viability) and extracellular matrix production. The mineralization and ALP assays revealed that osteogenic differentiation increased in the presence of PCL/β-TCP scaffolds. The latter was also confirmed by the gene expression levels of the proteins involved in the ossification process. Our results suggest that similar bio-inspired hybrid composite materials would be excellent candidates for osteoinductive and osteogenic medical-grade scaffolds to support cell proliferation and differentiation for tissue engineering, which warrants future in vivo research.
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Affiliation(s)
- Ivan López-González
- Tissue Regeneration and Repair Group, Orthobiology, Biomaterials and Tissue Engineering, Campus de los Jerónimos 135, UCAM-Universidad Católica de Murcia, Guadalupe, 30107 Murcia, Spain;
| | - Camilo Zamora-Ledezma
- Tissue Regeneration and Repair Group, Orthobiology, Biomaterials and Tissue Engineering, Campus de los Jerónimos 135, UCAM-Universidad Católica de Murcia, Guadalupe, 30107 Murcia, Spain;
| | - María Isabel Sanchez-Lorencio
- Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), University Clinical Hospital “Virgen de la Arrixaca”, University of Murcia, El Palmar, 30120 Murcia, Spain;
| | | | - José Antonio Gabaldón-Hernández
- Molecular Recognition and Encapsulation Research Group (REM), Health Sciences Department, Campus de los Jerónimos 135, UCAM-Universidad Católica de Murcia, Guadalupe, 30107 Murcia, Spain;
| | - Luis Meseguer-Olmo
- Tissue Regeneration and Repair Group, Orthobiology, Biomaterials and Tissue Engineering, Campus de los Jerónimos 135, UCAM-Universidad Católica de Murcia, Guadalupe, 30107 Murcia, Spain;
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Sohrabi M, Abbasi M, Ansar MM, Soltani Tehrani B. Evaluation of electrospun nanofibers fabricated using PCL/PVP and PVA/β-TCP as potential scaffolds for bone tissue engineering. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03905-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Su Y, McCarthy A, Wong SL, Hollins RR, Wang G, Xie J. Simultaneous Delivery of Multiple Antimicrobial Agents by Biphasic Scaffolds for Effective Treatment of Wound Biofilms. Adv Healthc Mater 2021; 10:e2100135. [PMID: 33887126 PMCID: PMC8222186 DOI: 10.1002/adhm.202100135] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/21/2021] [Indexed: 12/19/2022]
Abstract
Biofilms pose a major challenge to control wound-associated infections. Due to biofilm impenetrability, traditional antimicrobial agents are often ineffective in combating biofilms. Herein, a biphasic scaffold is reported as an antimicrobial delivery system by integrating nanofiber mats with dissolvable microneedle arrays for the effective treatment of bacterial biofilms. Different combinations of antimicrobial agents, including AgNO3 , Ga(NO3 )3 , and vancomycin, are incorporated into nanofiber mats by coaxial electrospinning, which enables sustained delivery of these drugs. The antimicrobial agents-incorporated dissolvable microneedle arrays allow direct penetration of drugs into biofilms. By optimizing the administration strategies, drug combinations, and microneedle densities, biphasic scaffolds are able to eradicate both methicillin-resistant Staphylococcus aureus (MRSA) and MRSA/Pseudomonas aeruginosa blend biofilms in an ex vivo human skin wound infection model without necessitating surgical debridement. Taken together, the combinatorial system comprises of nanofiber mats and microneedle arrays can provide an efficacious delivery of multiple antimicrobial agents for the treatment of bacterial biofilms in wounds.
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Affiliation(s)
- Yajuan Su
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Alec McCarthy
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Shannon L Wong
- Department of Surgery-Plastic Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Ronald R Hollins
- Department of Surgery-Plastic Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Guangshun Wang
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Mechanical and Materials Engineering, College of Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
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Dejob L, Toury B, Tadier S, Grémillard L, Gaillard C, Salles V. Electrospinning of in situ synthesized silica-based and calcium phosphate bioceramics for applications in bone tissue engineering: A review. Acta Biomater 2021; 123:123-153. [PMID: 33359868 DOI: 10.1016/j.actbio.2020.12.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/10/2020] [Accepted: 12/15/2020] [Indexed: 02/07/2023]
Abstract
The field of bone tissue engineering (BTE) focuses on the repair of bone defects that are too large to be restored by the natural healing process. To that purpose, synthetic materials mimicking the natural bone extracellular matrix (ECM) are widely studied and many combinations of compositions and architectures are possible. In particular, the electrospinning process can reproduce the fibrillar structure of bone ECM by stretching a viscoelastic solution under an electrical field. With this method, nano/micrometer-sized fibres can be produced, with an adjustable chemical composition. Therefore, by shaping bioactive ceramics such as silica, bioactive glasses and calcium phosphates through electrospinning, promising properties for their use in BTE can be obtained. This review focuses on the in situ synthesis and simultaneous electrospinning of bioceramic-based fibres while the reasons for using each material are correlated with its bioactivity. Theoretical and practical considerations for the synthesis and electrospinning of these materials are developed. Finally, investigations into the in vitro and in vivo bioactivity of different systems using such inorganic fibres are exposed.
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Affiliation(s)
- Léa Dejob
- Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne F-69622, France; Univ Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, Villeurbanne F-69621, France
| | - Bérangère Toury
- Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne F-69622, France
| | - Solène Tadier
- Univ Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, Villeurbanne F-69621, France
| | - Laurent Grémillard
- Univ Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, Villeurbanne F-69621, France
| | - Claire Gaillard
- Univ Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, Villeurbanne F-69621, France
| | - Vincent Salles
- Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne F-69622, France.
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Li R, Wang H, John JV, Song H, Teusink MJ, Xie J. 3D Hybrid Nanofiber Aerogels Combining with Nanoparticles Made of a Biocleavable and Targeting Polycation and MiR-26a for Bone Repair. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2005531. [PMID: 34326714 PMCID: PMC8315031 DOI: 10.1002/adfm.202005531] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Indexed: 05/24/2023]
Abstract
The healing of large bone defects represents a clinical challenge, often requiring some form of grafting. Three-dimensional (3D) nanofiber aerogels could be a promising bone graft due to their biomimetic morphology and controlled porous structures and composition. miR-26a has been reported to induce the differentiation of bone marrow-derived mesenchymal stem cells (BMSCs) and facilitate bone formation. Introducing miR-26a with a suitable polymeric vector targeting BMSCs could improve and enhance the functions of 3D nanofiber aerogels for bone regeneration. Herein, we first developed the comb-shaped polycation (HA-SS-PGEA) carrying a targeting component, biocleavable groups and short ethanolamine (EA)-decorated poly(glycidyl methacrylate) (PGMA) (abbreviated as PGEA) arms as miR-26a delivery vector. We then assessed the cytotoxicity and transfection efficiency of this polycation and cellular response to miR-26a-incorporated nanoparticles (NPs) in vitro. HA-SS-PGEA exhibited a stronger ability to transport miR-26a and exert its functions than the gold standard polyethyleneimine (PEI) and low-molecular-weight linear PGEA. We finally examined the efficacy of HA-SS-PGEA/miR-26a NPs loaded 3D hybrid nanofiber aerogels showing a positive effect on the cranial bone defect healing. Together, the combination of 3D nanofiber aerogels and functional NPs consisting of a biodegradable and targeting polycation and therapeutic miRNA could be a promising approach for bone regeneration.
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Affiliation(s)
- Ruiquan Li
- Department of Surgery-Transplant and Holland Regenerative Medicine Program University of Nebraska Medical Center, Omaha, NE 68130, United States
| | - Hongjun Wang
- Department of Surgery-Transplant and Holland Regenerative Medicine Program University of Nebraska Medical Center, Omaha, NE 68130, United States
| | - Johnson V John
- Department of Surgery-Transplant and Holland Regenerative Medicine Program University of Nebraska Medical Center, Omaha, NE 68130, United States
| | - Haiqing Song
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL 60607, United States
| | - Matthew J Teusink
- Department of Orthopedic Surgery and Rehabilitation, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Jingwei Xie
- Department of Surgery-Transplant and Holland Regenerative Medicine Program University of Nebraska Medical Center, Omaha, NE 68130, United States
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Wang L, Qiu Y, Guo Y, Si Y, Liu L, Cao J, Yu J, Li X, Zhang Q, Ding B. Smart, Elastic, and Nanofiber-Based 3D Scaffolds with Self-Deploying Capability for Osteoporotic Bone Regeneration. NANO LETTERS 2019; 19:9112-9120. [PMID: 31765166 DOI: 10.1021/acs.nanolett.9b04313] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
It has been a major challenge to treat osteoporotic bone defects with irregular shapes. Although bioactive glass offers an attractive material for bone regeneration, its inherent brittleness has greatly limited its scope of application. Herein, we report the fabrication of bioactive glass (SiO2-CaO) nanofibers with excellent flexibility to even allow for 180° bending. The bioactive glass nanofibers could be further assembled into 3D fibrous scaffolds with chitosan serving as the linkers. The scaffolds constructed from an assembly of 85SiO2-15CaO nanofibers and chitosan (85SiO2-15CaO NF/CS) possessed significantly better mechanical properties when benchmarked against both 75SiO2-25CaO nanofiber- and chitosan-based scaffolds. Moreover, the 85SiO2-15CaO NF/CS scaffolds exhibited an elastic behavior, with full recovery from 80% compression and good fatigue resistance over 1000 cycles of compression under water. Upon implantation, the elastic fibrous scaffolds were able to deform and fit irregularly shaped bone defects, followed by a self-deploying behavior to achieve a perfect match with the cavities. When applied to the repair of an osteoporotic calvarial defect in a rat model, the 85SiO2-15CaO NF/CS scaffolds showed substantial promotion of bone regrowth and vascularization. This new class of 3D fibrous scaffold provides a promising advancement in engineering smart materials for complex bone repair.
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Affiliation(s)
- Lihuan Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
| | - Yuyou Qiu
- School of Radiation Medicine and Protection, State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) , Medical College of Soochow University , Suzhou , Jiangsu 215123 , China
| | - Yuxia Guo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , China
| | - Yang Si
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Lifang Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
| | - Jianping Cao
- School of Radiation Medicine and Protection, State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) , Medical College of Soochow University , Suzhou , Jiangsu 215123 , China
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Xiaoran Li
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Qi Zhang
- School of Radiation Medicine and Protection, State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) , Medical College of Soochow University , Suzhou , Jiangsu 215123 , China
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
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Xiao J, Luo H, Ao H, Huang Y, Yao F, Zhang Q, Wan Y. A rhBMP-2-loaded three-dimensional mesoporous bioactive glass nanotubular scaffold prepared from bacterial cellulose. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123838] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Su Y, Wang H, Mishra B, Lakshmaiah Narayana J, Jiang J, Reilly DA, Hollins RR, Carlson MA, Wang G, Xie J. Nanofiber Dressings Topically Delivering Molecularly Engineered Human Cathelicidin Peptides for the Treatment of Biofilms in Chronic Wounds. Mol Pharm 2019; 16:2011-2020. [PMID: 30916573 DOI: 10.1021/acs.molpharmaceut.8b01345] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Biofilms of multidrug-resistant bacteria in chronic wounds pose a great challenge in wound care. Herein, we report the topical delivery of molecularly engineered antimicrobial peptides using electrospun nanofiber dressings as a carrier for the treatment of biofilms of multidrug-resistant bacteria in diabetic wounds. Molecularly engineered human cathelicidin peptide 17BIPHE2 was successfully encapsulated in the core of pluronic F127/17BIPHE2-PCL core-shell nanofibers. The in vitro release profiles of 17BIPHE2 showed an in initial burst followed by a sustained release over 4 weeks. The peptide nanofiber formulations effectively killed methicillin-resistant Staphylococcus aureus (MRSA) USA300. Similarly, the 17BIPHE2 peptide containing nanofibers could also effectively kill other bacteria including Klebsiella pneumoniae (104 to 106 CFU) and Acinetobacter baumannii (104 to 107 CFU) clinical strains in vitro without showing evident cytotoxicity to skin cells and monocytes. Importantly, 17BIPHE2-containing nanofiber dressings without debridement caused five-magnitude decreases of the MRSA USA300 CFU in a biofilm-containing chronic wound model based on type II diabetic mice. In combination with debridement, 17BIPHE2-containing nanofiber dressings could completely eliminate the biofilms, providing one possible solution to chronic wound treatment. Taken together, the biodegradable nanofiber-based wound dressings developed in this study can be utilized to effectively deliver molecularly engineered peptides to treat biofilm-containing chronic wounds.
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Nagrath M, Alhalawani A, Rahimnejad Yazdi A, Towler MR. Bioactive glass fiber fabrication via a combination of sol-gel process with electro-spinning technique. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 101:521-538. [PMID: 31029347 DOI: 10.1016/j.msec.2019.04.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 03/28/2019] [Accepted: 04/01/2019] [Indexed: 01/12/2023]
Affiliation(s)
- Malvika Nagrath
- Department of Biomedical Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto M5B 1W8, ON, Canada
| | - Adel Alhalawani
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto M5B 1W8, ON, Canada; Department of Mechanical and Industrial Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada
| | - Alireza Rahimnejad Yazdi
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto M5B 1W8, ON, Canada; Department of Mechanical and Industrial Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada
| | - Mark R Towler
- Department of Biomedical Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto M5B 1W8, ON, Canada; Department of Mechanical and Industrial Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada.
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Janarthanan G, Kim IG, Chung EJ, Noh I. Comparative studies on thin polycaprolactone-tricalcium phosphate composite scaffolds and its interaction with mesenchymal stem cells. Biomater Res 2019; 23:1. [PMID: 30788137 PMCID: PMC6318878 DOI: 10.1186/s40824-018-0153-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 12/20/2018] [Indexed: 12/12/2022] Open
Abstract
Background Hybrid scaffolds combining biodegradable polymers and ceramic particles for control of cell adhesion and proliferation are interesting materials for tissue engineering applications. Combinations of biodegradable polymers and ceramics are to provide higher beneficial functionalities to tissue engineering scaffolds with addition of different cell specific bio-factors. Many such hybrid combinations have been reported by several researchers around the world by using various methods and solvents as well as bioactive matrix polymers to fabricate such biomaterials. However, thin hybrid scaffolds with high porosity, cell adhesion factors and biodegradability, as well as the ability to support stem cells often require tedious processes like electrospinning, freeze drying, etc. A simple method to develop porous biodegradable hybrid scaffolds with proper cell adhesion factors is still the need of the hour in tissue engineering and regenerative medicine. Method Thin biodegradable poly(ε-caprolactone) (PCL) based hybrid scaffolds were developed in combination with α-tricalcium phosphate (TCP) particles, gelatin and fibronectin separately and the fabricated scaffolds were evaluated systematically using human mesenchymal stem cells (hMSCs) for tissue engineering applications. A simple modified solvent casting method combined with gas foaming process was used to develop porous thin hybrid structures and compared their properties with those of corresponding non-porous hybrid scaffolds. The TCP particles distribution, morphology, biodegradability and functional groups of the different hybrid scaffolds were analyzed using energy-dispersive X-ray spectroscopy (EDX), light microscopy/scanning electron microscopy (SEM), buffer solutions and Fourier-transform infrared spectroscopy (FTIR), respectively The cellular and tissue regeneration behaviors such as in vitro cell attachment (live/dead assay), cell proliferation (CCK-8 assay) and histological studies were performed using hMSCs. Results Thin PCL-based hybrid scaffolds were fabricated using modified solvent casting method. Homogeneous distribution of TCP particles in the scaffolds were confirmed by EDX. Cellular interactions of the hybrid scaffolds demonstrated overall higher cell adhesion, proliferation and tissue regeneration on the non-porous thin films of PCL-TCP, PCL-TCP-gelatin and PCL-TCP-fibronectin. Coating of fibronectin was remarkable in induction of cell adhesion and proliferation. Conclusions The experimental results revealed that diversely designed PCL-TCP thin hybrid films showed high cell interaction and proliferation with hMSCs. From the results of the cell viability, attachment, proliferation and histological analyses as well as their biodegradation and coating effects, we conclude that these thin PCL-TCP hybrid films are suitable for tissue engineering applications.
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Affiliation(s)
- Gopinathan Janarthanan
- Department of Chemical and Biomolecular Engineering, Seoul, 01811 Republic of Korea.,2Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811 Republic of Korea
| | - In Gul Kim
- 3Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Eun-Jae Chung
- 3Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul, 01811 Republic of Korea.,2Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811 Republic of Korea
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Chen S, Li R, Li X, Xie J. Electrospinning: An enabling nanotechnology platform for drug delivery and regenerative medicine. Adv Drug Deliv Rev 2018; 132:188-213. [PMID: 29729295 DOI: 10.1016/j.addr.2018.05.001] [Citation(s) in RCA: 207] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/03/2018] [Accepted: 05/01/2018] [Indexed: 02/06/2023]
Abstract
Electrospinning provides an enabling nanotechnology platform for generating a rich variety of novel structured materials in many biomedical applications including drug delivery, biosensing, tissue engineering, and regenerative medicine. In this review article, we begin with a thorough discussion on the method of producing 1D, 2D, and 3D electrospun nanofiber materials. In particular, we emphasize on how the 3D printing technology can contribute to the improvement of traditional electrospinning technology for the fabrication of 3D electrospun nanofiber materials as drug delivery devices/implants, scaffolds or living tissue constructs. We then highlight several notable examples of electrospun nanofiber materials in specific biomedical applications including cancer therapy, guiding cellular responses, engineering in vitro 3D tissue models, and tissue regeneration. Finally, we finish with conclusions and future perspectives of electrospun nanofiber materials for drug delivery and regenerative medicine.
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Weng L, Boda SK, Wang H, Teusink MJ, Shuler FD, Xie J. Novel 3D Hybrid Nanofiber Aerogels Coupled with BMP-2 Peptides for Cranial Bone Regeneration. Adv Healthc Mater 2018; 7:e1701415. [PMID: 29498244 PMCID: PMC6317907 DOI: 10.1002/adhm.201701415] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/15/2018] [Indexed: 12/30/2022]
Abstract
An ideal synthetic bone graft is a combination of the porous and nanofibrous structure presented by natural bone tissue as well as osteoinductive biochemical factors such as bone morphogenetic protein 2 (BMP-2). In this work, ultralight 3D hybrid nanofiber aerogels composed of electrospun PLGA-collagen-gelatin and Sr-Cu codoped bioactive glass fibers with incorporation of heptaglutamate E7 domain specific BMP-2 peptides have been developed and evaluated for their potential in cranial bone defect healing. The nanofiber aerogels are surgically implanted into 8 mm × 1 mm (diameter × thickness) critical-sized defects created in rat calvariae. A sustained release of E7-BMP-2 peptide from the degradable hybrid aerogels significantly enhances bone healing and defect closure over 8 weeks in comparison to unfilled defects. Histomorphometry and X-ray microcomputed tomography (µ-CT) analysis reveal greater bone volume and bone formation area in case of the E7-BMP-2 peptide loaded hybrid nanofiber aerogels. Further, histopathology data divulged a near complete nanofiber aerogel degradation along with enhanced vascularization of the regenerated tissue. Together, this study for the first time demonstrates the fabrication of 3D hybrid nanofiber aerogels from 2D electrospun fibers and their loading with therapeutic osteoinductive BMP-2 mimicking peptide for cranial bone tissue regeneration.
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Affiliation(s)
- Lin Weng
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Sunil Kumar Boda
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Hongjun Wang
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Matthew J. Teusink
- Department of Orthopedic Surgery and Rehabilitation, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Franklin D. Shuler
- Department of Orthopaedic Surgery, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, 25755 United States
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
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Jiang J, Chen S, Wang H, Carlson MA, Gombart AF, Xie J. CO 2-expanded nanofiber scaffolds maintain activity of encapsulated bioactive materials and promote cellular infiltration and positive host response. Acta Biomater 2018; 68:237-248. [PMID: 29269334 PMCID: PMC5803415 DOI: 10.1016/j.actbio.2017.12.018] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 12/21/2022]
Abstract
Traditional electrospun nanofiber membranes were incapable of promoting cellular infiltration due to its intrinsic property (e.g., dense structure and small pore size) limiting their use in tissue regeneration. Herein, we report a simple and novel approach for expanding traditional nanofiber membranes from two-dimensional to three-dimensional (3D) with controlled thickness and porosity via depressurization of subcritical CO2 fluid. The expanded 3D nanofiber scaffolds formed layered structures and simultaneously maintained the aligned nanotopographic cues. The 3D scaffolds also retained the fluorescent intensity of encapsulated coumarin 6 and the antibacterial activity of encapsulated antimicrobial peptide LL-37. In addition, the expanded 3D nanofiber scaffolds with arrayed holes can significantly promote cellular infiltration and neotissue formation after subcutaneous implantation compared to traditional nanofiber membranes. Such scaffolds also significantly increased the blood vessel formation and the ratio of M2/M1 macrophages after subcutaneous implantation for 2 and 4 weeks compared to traditional nanofiber membranes. Together, the presented method holds great potential in the fabrication of functional 3D nanofiber scaffolds for various applications including engineering 3D in vitro tissue models, antimicrobial wound dressing, and repairing/regenerating tissues in vivo. STATEMENT OF SIGNIFICANCE Electrospun nanofibers have been widely used in regenerative medicine due to its biomimicry property. However, most of studies are limited to the use of 2D electrospun nanofiber membranes. To the best of our knowledge, this article is the first instance of the transformation of traditional electrospun nanofiber membranes from 2D to 3D via depressurization of subcritical CO2 fluid. This method eliminates many issues associated with previous approaches such as necessitating the use of aqueous solutions and chemical reactions, multiple-step process, loss of the activity of encapsulated biological molecules, and unable to expand electrospun nanofiber mats made of hydrophilic polymers. Results indicate that these CO2 expanded nanofiber scaffolds can maintain the activity of encapsulated biological molecules. Further, the CO2 expanded nanofiber scaffolds with arrayed holes can greatly promote cellular infiltration, neovascularization, and positive host response after subcutaneous implantation in rats. The current work is the first study elucidating such a simple and novel strategy for fabrication of 3D nanofiber scaffolds.
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Affiliation(s)
- Jiang Jiang
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Shixuan Chen
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Hongjun Wang
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Mark A Carlson
- Departments of Surgery and Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, United States; Department of Surgery, VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
| | - Adrian F Gombart
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, United States; Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR 97331, United States
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States.
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Chen S, Ge L, Gombart AF, Shuler FD, Carlson MA, Reilly DA, Xie J. Nanofiber-based sutures induce endogenous antimicrobial peptide. Nanomedicine (Lond) 2017; 12:2597-2609. [PMID: 28960168 DOI: 10.2217/nnm-2017-0161] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM The aim of this study was to develop nanofiber-based sutures capable of inducing endogenous antimicrobial peptide production. METHODS We used co-axial electrospinning deposition and rolling to fabricate sutures containing pam3CSK4 peptide and 25-hydroxyvitamin D3 (25D3). RESULTS The diameters and mechanical properties of the sutures were adjustable to meet the criteria of United States Pharmacopeia designation. 25D3 exhibited a sustained release from nanofiber sutures over 4 weeks. Pam3CSK4 peptide also showed an initial burst followed by a sustained release over 4 weeks. The co-delivery of 25D3 and pam3CSK4 peptide enhanced cathelicidin antimicrobial peptide production from U937 cells and keratinocytes compared with 25D3 delivery alone. In addition, the 25D3/pam3CSK4 peptide co-loaded nanofiber sutures did not significantly influence proliferation of keratinocytes, fibroblasts, or the monocytic cell lines U937 and HL-60. CONCLUSION The use of 25D3/pam3CSK4 peptide co-loaded nanofiber sutures could potentially induce endogenous antimicrobial peptide production and reduce surgical site infections.
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Affiliation(s)
- Shixuan Chen
- Department of Surgery-Transplant & Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Liangpeng Ge
- Chongqing Academy of Animal Sciences & Key Laboratory of Pig Industry Sciences, Ministry of Agriculture, Chongqing, China
| | - Adrian F Gombart
- Department of Biochemistry & Biophysics & Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - Franklin D Shuler
- Department of Orthopedic Surgery, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA
| | - Mark A Carlson
- Department of Surgery-General Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Debra A Reilly
- Department of Surgery-Plastic Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Jingwei Xie
- Department of Surgery-Transplant & Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Weng L, Boda SK, Teusink MJ, Shuler FD, Li X, Xie J. Binary Doping of Strontium and Copper Enhancing Osteogenesis and Angiogenesis of Bioactive Glass Nanofibers while Suppressing Osteoclast Activity. ACS APPLIED MATERIALS & INTERFACES 2017; 9:24484-24496. [PMID: 28675029 DOI: 10.1021/acsami.7b06521] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Electrospun bioactive glass fibers show great potential as scaffolds for bone tissue engineering due to their architectural biomimicry of the bone extracellular matrix and their composition capable of providing soluble bioactive cues for bone regeneration and remodeling. Trace elements can be doped to further promote osteogenesis and angiogenesis during bone regeneration. Cationic substitution of strontium for calcium in bioactive glass positively enhances osteoblast phenotype, while suppressing osteoclast activity. Further, the addition of copper spontaneously improves the vascularization during neobone formation. The objective of this study was to fabricate and characterize electrospun bioactive glass fibers doped with strontium and copper and evaluate their potential for bone repair/regeneration in vitro. Different ratios of strontium and copper were doped in electrospun bioactive glass fibers. The released strontium and copper from doped fibers could reach effective concentrations within 40 h and last for 4 weeks. These bioactive glass fibers demonstrate their bioactivity by promoting osteoblastic and endothelial cell activity and inhibiting the formation of osteoclasts or bone resorbing cells. Additionally, in vitro cell culture of different cell types in the presence of extraction solutions of the electrospun bioactive glass fibers showed that the dopants achieved their individual goals without causing significant cytotoxicity. Altogether, this novel class of bioactive glass fibers holds great promise for bone regeneration.
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Affiliation(s)
| | | | | | - Franklin D Shuler
- Department of Orthopaedic Surgery, Joan C. Edwards School of Medicine, Marshall University , Huntington, West Virginia 25755, United States
| | - Xiaoran Li
- Key Laboratory for Nano-Bio Interface Research, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
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Chen S, Ge L, Mueller A, Carlson MA, Teusink MJ, Shuler FD, Xie J. Twisting electrospun nanofiber fine strips into functional sutures for sustained co-delivery of gentamicin and silver. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2017; 13:1435-1445. [PMID: 28185940 PMCID: PMC5451297 DOI: 10.1016/j.nano.2017.01.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 01/24/2017] [Accepted: 01/26/2017] [Indexed: 02/07/2023]
Abstract
Surgical site infections (SSIs) represent the most common nosocomial infection among surgical patients. In order to prevent SSIs in a sustained manner and lessen side effects, we developed a twisting method for generation of nanofiber-based sutures capable of simultaneous delivery of silver and gentamicin. The prepared sutures are composed of core-sheath nanofibers with gentamicin/pluronic F127 in the core and silver/PCL in the sheath produced by co-axial electrospinning. The diameters of obtained sutures range from ~80 μm to ~1.2 mm. The in vitro release profiles of silver and gentamicin exhibit an initial burst followed by a sustained release over 5 weeks. The co-encapsulated sutures were able to kill bacteria much more effectively than gentamicin or silver alone loaded nanofiber sutures, without showing obvious impact on proliferation and migration of dermal fibroblasts and keratinocytes. The gentamicin and silver co-loaded PCL nanofiber sutures may hold great potential for prevention of SSIs.
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Affiliation(s)
- Shixuan Chen
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, United States
| | - Liangpeng Ge
- Chongqing Academy of Animal Sciences and Key Laboratory of Pig Industry Sciences, Ministry of Agriculture, Chongqing, China
| | - Aubrey Mueller
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, United States
| | - Mark A Carlson
- Department of Surgery-General Surgery, University of Nebraska Medical Center, Omaha, NE, United States
| | - Matthew J Teusink
- Department of Orthopaedic Surgery and Rehabilitation, University of Nebraska Medical Center, Omaha, NE, United States
| | - Franklin D Shuler
- Department of Orthopaedic Surgery, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, United States
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, United States.
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Kang Z, Zhang X, Chen Y, Akram MY, Nie J, Zhu X. Preparation of polymer/calcium phosphate porous composite as bone tissue scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:1125-1131. [DOI: 10.1016/j.msec.2016.04.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 03/23/2016] [Accepted: 04/04/2016] [Indexed: 01/04/2023]
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Sperling LE, Reis KP, Pranke P, Wendorff JH. Advantages and challenges offered by biofunctional core-shell fiber systems for tissue engineering and drug delivery. Drug Discov Today 2016; 21:1243-56. [PMID: 27155458 DOI: 10.1016/j.drudis.2016.04.024] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 03/22/2016] [Accepted: 04/28/2016] [Indexed: 12/27/2022]
Abstract
Whereas highly porous scaffolds composed of electrospun nanofibers can mimick major features of the extracellular matrix in tissue engineering, they lack the ability to incorporate and release biocompounds (drugs, growth factors) safely in a controlled way. Here, electrospun core-shell fibers (core made from water and aqueous solutions of hydrophilic polymers and the shell from materials with well-defined release mechanisms) offer unique advantages in comparison with those that have helped make porous nanofibrillar scaffolds highly successful in tissue engineering. This review considers the preparation and biofunctionalization of such core-shell fibers as well as applications in various areas, including neural, vascular, cardiac, cartilage and bone tissue engineering, and touches on the topic of clinical trials.
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Affiliation(s)
- Laura E Sperling
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Karina P Reis
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; Post Graduate Program in Physiology, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Patricia Pranke
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; Stem Cell Research Institute, Porto Alegre, RS, Brazil
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Ma J, Lin H, Li X, Bian C, Xiang D, Qu F. Synthesis of hierarchical porous bioactive glasses for bone tissue regeneration. IET Nanobiotechnol 2015; 8:216-21. [PMID: 25429500 DOI: 10.1049/iet-nbt.2013.0054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A novel hierarchical porous bioactive glasses were synthesised with cattail stem and triblock polyethylene oxide-propylene oxide block copolymer (P123) as macroporous template and mesoporous template, respectively. The structural and textural properties of materials were characterised by X-ray diffraction, scanning electron microscope, Fourier transform infrared spectroscopy, nitrogen adsorption-desorption, energy dispersive spectrometer and vibrating sample magnetometer technique. The results reveal the bioglasses possess multilevel porous structure with the macroporous size about 50 μm and the mesopore with the diameter of 3.86 nm. Furthermore, metformin HCl was used as the model drug. The drug release kinetics and hydroxyapatite (HAP, (Ca10(PO4)6(OH)2)) inducing-growth ability of the composites were studied, respectively. The system exhibits the fast HAP inducing-growth ability and long-term drug delivery, making them a good candidate for bone tissue regeneration.
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Affiliation(s)
- Jie Ma
- Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Harbin Normal University, Harbin 150025, People's Republic of China
| | - Huiming Lin
- Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Harbin Normal University, Harbin 150025, People's Republic of China
| | - Xiaofeng Li
- Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Harbin Normal University, Harbin 150025, People's Republic of China
| | - Chunhui Bian
- Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Harbin Normal University, Harbin 150025, People's Republic of China
| | - Di Xiang
- Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Harbin Normal University, Harbin 150025, People's Republic of China
| | - Fengyu Qu
- Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Harbin Normal University, Harbin 150025, People's Republic of China.
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Preparation of hollow bioactive glass nanofibers by a facile electrospinning method. BIOMEDICAL GLASSES 2015. [DOI: 10.1515/bglass-2015-0013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIn this communication, hollow bioactive glass (BG) nanofibers were fabricated via a single-nozzle electrospinning method. The morphology of the prepared hollow BG nanofibers was observed by SEM and TEM, and the results showed that BG nanofibers had a continuous hollow interior. The hollow BG nanofibers were incubated in simulated body fluid (SBF) to investigate their apatitemineralization ability, and the result showed that after incubation for 6 h a flower-like apatite was observed on the surface of hollowBGnanofibers, and the Fourier transform infrared (FTIR) result further confirmed the formation of apatite. The results suggested that hollow BG nanofibers could be used for drug delivery and bone regeneration applications due to their unique hollow structure and bioactivity.
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A feasible approach toward bioactive glass nanofibers with tunable protein release kinetics for bone scaffolds. Colloids Surf B Biointerfaces 2014; 122:785-791. [DOI: 10.1016/j.colsurfb.2014.08.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 08/12/2014] [Accepted: 08/15/2014] [Indexed: 02/07/2023]
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Liu X, Hasan MS, Grant DM, Harper LT, Parsons AJ, Palmer G, Rudd CD, Ahmed I. Mechanical, degradation and cytocompatibility properties of magnesium coated phosphate glass fibre reinforced polycaprolactone composites. J Biomater Appl 2014; 29:675-87. [DOI: 10.1177/0885328214541302] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Retention of mechanical properties of phosphate glass fibre reinforced degradable polyesters such as polycaprolactone and polylactic acid in aqueous media has been shown to be strongly influenced by the integrity of the fibre/polymer interface. A previous study utilising ‘single fibre’ fragmentation tests found that coating with magnesium improved the fibre and matrix interfacial shear strength. Therefore, the aim of this study was to investigate the effects of a magnesium coating on the manufacture and characterisation of a random chopped fibre reinforced polycaprolactone composite. Short chopped strand non-woven phosphate glass fibre mats were sputter coated with degradable magnesium to manufacture phosphate glass fibre/polycaprolactone composites. The degradation behaviour (water uptake, mass loss and pH change of the media) of these polycaprolactone composites as well as of pure polycaprolactone was investigated in phosphate buffered saline. The Mg coated fibre reinforced composites revealed less water uptake and mass loss during degradation compared to the non-coated composites. The cations released were also explored and a lower ion release profile for all three cations investigated (namely Na+, Mg2+ and Ca2+) was seen for the Mg coated composite samples. An increase of 17% in tensile strength and 47% in tensile modulus was obtained for the Mg coated composite samples. Both flexural and tensile properties were investigated and a higher retention of mechanical properties was obtained for the Mg coated fibre reinforced composite samples up to 10 days immersion in PBS. Cytocompatibility study showed both composite samples (coated and non-coated) had good cytocompatibility with human osteosarcoma cell line.
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Affiliation(s)
- Xiaoling Liu
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Muhammad S Hasan
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - David M Grant
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Lee T Harper
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Andrew J Parsons
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Graham Palmer
- Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, London, UK
| | - Chris D Rudd
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Ifty Ahmed
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham, UK
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Castaño O, Sachot N, Xuriguera E, Engel E, Planell JA, Park JH, Jin GZ, Kim TH, Kim JH, Kim HW. Angiogenesis in bone regeneration: tailored calcium release in hybrid fibrous scaffolds. ACS APPLIED MATERIALS & INTERFACES 2014; 6:7512-7522. [PMID: 24754868 DOI: 10.1021/am500885v] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In bone regeneration, silicon-based calcium phosphate glasses (Bioglasses) have been widely used since the 1970s. However, they dissolve very slowly because of their high amount of Si (SiO2 > 45%). Recently, our group has found that calcium ions released by the degradation of glasses in which the job of silicon is done by just 5% of TiO2 are effective angiogenic promoters, because of their stimulation of a cell-membrane calcium sensing receptor (CaSR). Based on this, other focused tests on angiogenesis have found that Bioglasses also have the potential to be angiogenic promoters even with high contents of silicon (80%); however, their slow degradation is still a problem, as the levels of silicon cannot be decreased any lower than 45%. In this work, we propose a new generation of hybrid organically modified glasses, ormoglasses, that enable the levels of silicon to be reduced, therefore speeding up the degradation process. Using electrospinning as a faithful way to mimic the extracellular matrix (ECM), we successfully produced hybrid fibrous mats with three different contents of Si (40, 52, and 70%), and thus three different calcium ion release rates, using an ormoglass-polycaprolactone blend approach. These mats offered a good platform to evaluate different calcium release rates as osteogenic promoters in an in vivo subcutaneous environment. Complementary data were collected to complement Ca(2+) release analysis, such as stiffness evaluation by AFM, ζ-potential, morphology evaluation by FESEM, proliferation and differentiation analysis, as well as in vivo subcutaneous implantations. Material and biological characterization suggested that compositions of organic/inorganic hybrid materials with a Si content equivalent to 40%, which were also those that released more calcium, were osteogenic. They also showed a greater ability to form blood vessels. These results suggest that Si-based ormoglasses can be considered an efficient tool for calcium release modulation, which could play a key role in the angiogenic promoting process.
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Affiliation(s)
- Oscar Castaño
- Biomaterials for Regenerative Therapies, Institute for Bioengineering of Catalonia (IBEC) , 08028, Barcelona, Spain
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Liu W, Lipner J, Xie J, Manning CN, Thomopoulos S, Xia Y. Nanofiber scaffolds with gradients in mineral content for spatial control of osteogenesis. ACS APPLIED MATERIALS & INTERFACES 2014; 6:2842-9. [PMID: 24433042 PMCID: PMC3985939 DOI: 10.1021/am405418g] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 01/16/2014] [Indexed: 05/19/2023]
Abstract
Reattachment of tendon to bone has been a challenge in orthopedic surgery. The disparate mechanical properties of the two tissues make it difficult to achieve direct surgical repair of the tendon-to-bone insertion. Healing after surgical repair typically does not regenerate the natural attachment, a complex tissue that connects tendon and bone across a gradient in both mineral content and cell phenotypes. To facilitate the regeneration of the attachment, our groups have developed a nanofiber-based scaffold with a graded mineral coating to mimic the mineral composition of the native tendon-to-bone insertion. In the present work, we evaluated the ability of this scaffold to induce graded osteogenesis of adipose-derived mesenchymal stem cells (ASCs). Results from 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and proliferating cell nuclear antigen staining indicated that cell proliferation was negatively correlated with the mineral content. In contrast, alkaline phosphatase staining, an indicator of osteogenesis, was positively correlated with the mineral content. Likewise, runt-related transcription factor 2 (an early marker of osteoblast differentiation) and osteocalcin (a late marker of osteoblast differentiation) immunostaining were both positively correlated with the mineral content. These results indicate that a gradient in mineral content on the surface of a nanofiber scaffold is capable of inducing graded differentiation of ASCs into osteoblasts for enthesis repair.
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Affiliation(s)
- Wenying Liu
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Justin Lipner
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, United States
| | - Jingwei Xie
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, United States
| | - Cionne N. Manning
- Department of Orthopaedic Surgery, Washington University, St. Louis, Missouri 63110, United States
| | - Stavros Thomopoulos
- Department of Orthopaedic Surgery, Washington University, St. Louis, Missouri 63110, United States
| | - Younan Xia
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- The Wallace H. Coulter Department of Biomedical Engineering, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Polini A, Bai H, Tomsia AP. Dental applications of nanostructured bioactive glass and its composites. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2013; 5:399-410. [PMID: 23606653 PMCID: PMC3683357 DOI: 10.1002/wnan.1224] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
To improve treatments of bone or dental trauma and diseases such as osteoporosis, cancer, and infections, scientists who perform basic research are collaborating with clinicians to design and test new biomaterials for the regeneration of lost or injured tissue. Developed some 40 years ago, bioactive glass (BG) has recently become one of the most promising biomaterials, a consequence of discoveries that its unusual properties elicit specific biological responses inside the body. Among these important properties are the capability of BG to form strong interfaces with both hard and soft tissues, and its release of ions upon dissolution. Recent developments in nanotechnology have introduced opportunities for materials sciences to advance dental and bone therapies. For example, the applications for BG expand as it becomes possible to finely control structures and physicochemical properties of materials at the molecular level. Here, we review how the properties of these materials have been enhanced by the advent of nanotechnology, and how these developments are producing promising results in hard-tissue regeneration and development of innovative BG-based drug delivery systems.
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Affiliation(s)
- Alessandro Polini
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
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Controlled biomineralization of electrospun poly(ε-caprolactone) fibers to enhance their mechanical properties. Acta Biomater 2013; 9:5698-707. [PMID: 23131385 DOI: 10.1016/j.actbio.2012.10.042] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 09/24/2012] [Accepted: 10/30/2012] [Indexed: 11/24/2022]
Abstract
Electrospun polymeric fibers have been investigated as scaffolding materials for bone tissue engineering. However, their mechanical properties, and in particular stiffness and ultimate tensile strength, cannot match those of natural bones. The objective of the study was to develop novel composite nanofiber scaffolds by attaching minerals to polymeric fibers using an adhesive material - the mussel-inspired protein polydopamine - as a "superglue". Herein, we report for the first time the use of dopamine to regulate mineralization of electrospun poly(ε-caprolactone) (PCL) fibers to enhance their mechanical properties. We examined the mineralization of the PCL fibers by adjusting the concentration of HCO(3)(-) and dopamine in the mineralized solution, the reaction time and the surface composition of the fibers. We also examined mineralization on the surface of polydopamine-coated PCL fibers. We demonstrated the control of morphology, grain size and thickness of minerals deposited on the surface of electrospun fibers. The obtained mineral coatings render electrospun fibers with much higher stiffness, ultimate tensile strength and toughness, which could be closer to the mechanical properties of natural bone. Such great enhancement of mechanical properties for electrospun fibers through mussel protein-mediated mineralization has not been seen previously. This study could also be extended to the fabrication of other composite materials to better bridge the interfaces between organic and inorganic phases.
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