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Crabtree JR, Mulenga CM, Tran K, Feinberg K, Santerre JP, Borschel GH. Biohacking Nerve Repair: Novel Biomaterials, Local Drug Delivery, Electrical Stimulation, and Allografts to Aid Surgical Repair. Bioengineering (Basel) 2024; 11:776. [PMID: 39199733 PMCID: PMC11352148 DOI: 10.3390/bioengineering11080776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 07/15/2024] [Accepted: 07/26/2024] [Indexed: 09/01/2024] Open
Abstract
The regenerative capacity of the peripheral nervous system is limited, and peripheral nerve injuries often result in incomplete healing and poor outcomes even after repair. Transection injuries that induce a nerve gap necessitate microsurgical intervention; however, even the current gold standard of repair, autologous nerve graft, frequently results in poor functional recovery. Several interventions have been developed to augment the surgical repair of peripheral nerves, and the application of functional biomaterials, local delivery of bioactive substances, electrical stimulation, and allografts are among the most promising approaches to enhance innate healing across a nerve gap. Biocompatible polymers with optimized degradation rates, topographic features, and other functions provided by their composition have been incorporated into novel nerve conduits (NCs). Many of these allow for the delivery of drugs, neurotrophic factors, and whole cells locally to nerve repair sites, mitigating adverse effects that limit their systemic use. The electrical stimulation of repaired nerves in the perioperative period has shown benefits to healing and recovery in human trials, and novel biomaterials to enhance these effects show promise in preclinical models. The use of acellular nerve allografts (ANAs) circumvents the morbidity of donor nerve harvest necessitated by the use of autografts, and improvements in tissue-processing techniques may allow for more readily available and cost-effective options. Each of these interventions aid in neural regeneration after repair when applied independently, and their differing forms, benefits, and methods of application present ample opportunity for synergistic effects when applied in combination.
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Affiliation(s)
- Jordan R. Crabtree
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Chilando M. Mulenga
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Khoa Tran
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Konstantin Feinberg
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - J. Paul Santerre
- Institute of Biomedical Engineering, University of Toronto, 164 College St Room 407, Toronto, ON M5S 3G9, Canada
| | - Gregory H. Borschel
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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2
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Li X, Mao X, Tao M, Liang F, Tian X, Fan J, Wang X, Yu T, Ao Q. Enhancing neuroinduction activity of PLCL-based nerve conduits through native epineurium integration. BIOMATERIALS ADVANCES 2024; 159:213803. [PMID: 38447384 DOI: 10.1016/j.bioadv.2024.213803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 01/23/2024] [Accepted: 02/20/2024] [Indexed: 03/08/2024]
Abstract
Autologous nerve grafts have been considered the gold standard for peripheral nerve grafts. However, due to drawbacks such as functional loss in the donor area and a shortage of donor sources, nerve conduits are increasingly being considered as an alternative approach. Polymer materials have been widely studied as nerve repair materials due to their excellent processing performance. However, their limited biocompatibility has restricted further clinical applications. The epineurium is a natural extra-neural wrapping structure. After undergoing decellularization, the epineurium not only reduces immune rejection but also retains certain bioactive components. In this study, decellularized epineurium (DEP) derived from the sciatic nerve of mammals was prepared, and a bilayer nerve conduit was created by electrospinning a poly (l-lactide-co-ε-caprolactone) (PLCL) membrane layer onto the outer surface of the DEP. Components of the DEP were examined; the physical properties and biosafety of the bilayer nerve conduit were evaluated; and the functionality of the nerve conduit was evaluated in rats. The results demonstrate that the developed bilayer nerve conduit exhibits excellent biocompatibility and mechanical properties. Furthermore, this bilayer nerve conduit shows significantly superior therapeutic effects for sciatic nerve defects in rats compared to the pure PLCL nerve conduit. In conclusion, this research provides a novel strategy for the design of nerve regeneration materials and holds promising potential for further clinical translation.
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Affiliation(s)
- Xiao Li
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, Liaoning, China
| | - Xiaoyan Mao
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, Liaoning, China
| | - Meihan Tao
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, Liaoning, China
| | - Fang Liang
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, Liaoning, China
| | - Xiaohong Tian
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, Liaoning, China
| | - Jun Fan
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, Liaoning, China
| | - Xiaohong Wang
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, Liaoning, China
| | - Tianhao Yu
- The VIP Department, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Qiang Ao
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, Liaoning, China; NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial, Institute of Regulatory Science for Medical Device, National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan 610064, China..
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Das S, Thimukonda Jegadeesan J, Basu B. Advancing Peripheral Nerve Regeneration: 3D Bioprinting of GelMA-Based Cell-Laden Electroactive Bioinks for Nerve Conduits. ACS Biomater Sci Eng 2024; 10:1620-1645. [PMID: 38345020 DOI: 10.1021/acsbiomaterials.3c01226] [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] [Indexed: 03/12/2024]
Abstract
Peripheral nerve injuries often result in substantial impairment of the neurostimulatory organs. While the autograft is still largely used as the "gold standard" clinical treatment option, nerve guidance conduits (NGCs) are currently considered a promising approach for promoting peripheral nerve regeneration. While several attempts have been made to construct NGCs using various biomaterial combinations, a comprehensive exploration of the process science associated with three-dimensional (3D) extrusion printing of NGCs with clinically relevant sizes (length: 20 mm; diameter: 2-8 mm), while focusing on tunable buildability using electroactive biomaterial inks, remains unexplored. In addressing this gap, we present here the results of the viscoelastic properties of a range of a multifunctional gelatin methacrylate (GelMA)/poly(ethylene glycol) diacrylate (PEGDA)/carbon nanofiber (CNF)/gellan gum (GG) hydrogel bioink formulations and printability assessment using experiments and quantitative models. Our results clearly established the positive impact of the gellan gum on the enhancement of the rheological properties. Interestingly, the strategic incorporation of PEGDA as a secondary cross-linker led to a remarkable enhancement in the strength and modulus by 3 and 8-fold, respectively. Moreover, conductive CNF addition resulted in a 4-fold improvement in measured electrical conductivity. The use of four-component electroactive biomaterial ink allowed us to obtain high neural cell viability in 3D bioprinted constructs. While the conventionally cast scaffolds can support the differentiation of neuro-2a cells, the most important result has been the excellent cell viability of neural cells in 3D encapsulated structures. Taken together, our findings demonstrate the potential of 3D bioprinting and multimodal biophysical cues in developing functional yet critical-sized nerve conduits for peripheral nerve tissue regeneration.
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Affiliation(s)
- Soumitra Das
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | | | - Bikramjit Basu
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
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4
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Rahman M, Mahady Dip T, Padhye R, Houshyar S. Review on electrically conductive smart nerve guide conduit for peripheral nerve regeneration. J Biomed Mater Res A 2023; 111:1916-1950. [PMID: 37555548 DOI: 10.1002/jbm.a.37595] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 01/29/2023] [Accepted: 07/26/2023] [Indexed: 08/10/2023]
Abstract
At present, peripheral nerve injuries (PNIs) are one of the leading causes of substantial impairment around the globe. Complete recovery of nerve function after an injury is challenging. Currently, autologous nerve grafts are being used as a treatment; however, this has several downsides, for example, donor site morbidity, shortage of donor sites, loss of sensation, inflammation, and neuroma development. The most promising alternative is the development of a nerve guide conduit (NGC) to direct the restoration and renewal of neuronal axons from the proximal to the distal end to facilitate nerve regeneration and maximize sensory and functional recovery. Alternatively, the response of nerve cells to electrical stimulation (ES) has a substantial regenerative effect. The incorporation of electrically conductive biomaterials in the fabrication of smart NGCs facilitates the function of ES throughout the active proliferation state. This article overviews the potency of the various categories of electroactive smart biomaterials, including conductive and piezoelectric nanomaterials, piezoelectric polymers, and organic conductive polymers that researchers have employed latterly to fabricate smart NGCs and their potentiality in future clinical application. It also summarizes a comprehensive analysis of the recent research and advancements in the application of ES in the field of NGC.
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Affiliation(s)
- Mustafijur Rahman
- Center for Materials Innovation and Future Fashion (CMIFF), School of Fashion and Textiles, RMIT University, Brunswick, Australia
- Department of Dyes and Chemical Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh
| | - Tanvir Mahady Dip
- Department of Materials, University of Manchester, Manchester, UK
- Department of Yarn Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh
| | - Rajiv Padhye
- Center for Materials Innovation and Future Fashion (CMIFF), School of Fashion and Textiles, RMIT University, Brunswick, Australia
| | - Shadi Houshyar
- School of Engineering, RMIT University, Melbourne, Victoria, Australia
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5
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Mankavi F, Ibrahim R, Wang H. Advances in Biomimetic Nerve Guidance Conduits for Peripheral Nerve Regeneration. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2528. [PMID: 37764557 PMCID: PMC10536071 DOI: 10.3390/nano13182528] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/04/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023]
Abstract
Injuries to the peripheral nervous system are a common clinical issue, causing dysfunctions of the motor and sensory systems. Surgical interventions such as nerve autografting are necessary to repair damaged nerves. Even with autografting, i.e., the gold standard, malfunctioning and mismatches between the injured and donor nerves often lead to unwanted failure. Thus, there is an urgent need for a new intervention in clinical practice to achieve full functional recovery. Nerve guidance conduits (NGCs), providing physicochemical cues to guide neural regeneration, have great potential for the clinical regeneration of peripheral nerves. Typically, NGCs are tubular structures with various configurations to create a microenvironment that induces the oriented and accelerated growth of axons and promotes neuron cell migration and tissue maturation within the injured tissue. Once the native neural environment is better understood, ideal NGCs should maximally recapitulate those key physiological attributes for better neural regeneration. Indeed, NGC design has evolved from solely physical guidance to biochemical stimulation. NGC fabrication requires fundamental considerations of distinct nerve structures, the associated extracellular compositions (extracellular matrices, growth factors, and cytokines), cellular components, and advanced fabrication technologies that can mimic the structure and morphology of native extracellular matrices. Thus, this review mainly summarizes the recent advances in the state-of-the-art NGCs in terms of biomaterial innovations, structural design, and advanced fabrication technologies and provides an in-depth discussion of cellular responses (adhesion, spreading, and alignment) to such biomimetic cues for neural regeneration and repair.
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Affiliation(s)
| | | | - Hongjun Wang
- Department of Biomedical Engineering, Semcer Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (F.M.); (R.I.)
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6
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Liu C, Hua J, Ng PF, Wang Y, Fei B, Shao Z. Bioinspired Photo-Cross-Linking of Stretched Solid Silks for Enhanced Strength. ACS Biomater Sci Eng 2022; 8:484-492. [DOI: 10.1021/acsbiomaterials.1c01170] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chang Liu
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Jiachuan Hua
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Pui Fai Ng
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Yidi Wang
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Bin Fei
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Zhengzhong Shao
- Department of Macromolecular Science, Fudan University, Shanghai 200437, China
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7
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Zhang Y, Chen X, Li Y, Bai T, Li C, Jiang L, Liu Y, Sun C, Zhou W. Biomimetic Inorganic Nanoparticle-Loaded Silk Fibroin-Based Coating with Enhanced Antibacterial and Osteogenic Abilities. ACS OMEGA 2021; 6:30027-30039. [PMID: 34778674 PMCID: PMC8582041 DOI: 10.1021/acsomega.1c04734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
Poor osseointegration and infection are the main reasons leading to the failure of hard tissue implants; especially, in recent years, the failure rate has been increasing every year owing to the continuously increasing conditions such as injury, trauma, diseases, or infections. Therefore, the development of a biomimetic surface coating of bone tissues with antibacterial function is an effective means to improve bone healing and inhibit bacterial infection. Mimicking the natural bone, in this study, we have designed a silk fibroin (collagen-like structure)-based coating inlaid with nanohydroxyapatite (nHA) and silver nanoparticles (AgNPs) for promoting antibacterial ability and osteogenesis, especially focusing on the bone mimetic structure for enhancing bone health. Observing the morphology and size of the composite nanoparticles by transmission electron microscope (TEM), nHA provided nucleation sites for the formation of AgNPs, forming an nHA/AgNP complex with a size of about 100-200 nm. Characterization of the nHA/Ag-loaded silk fibroin biomimetic coating showed an increased surface roughness with good density and compact performances. The silk fibroin-based coating loaded with uniformly distributed AgNPs and nHA could effectively inhibit the adhesion of Staphylococcus aureus on the surface and, at the same time, quickly kill planktonic bacteria, indicating their good antibacterial ability. In vitro cell experiments revealed that the biomimetic silk fibroin-based coating was beneficial to the adhesion, spreading, and proliferation of osteoblasts (MC3T3-E1). In addition, by characterizing LDH and ROS, it was found that the nHA/Ag complex could significantly reduce the cytotoxicity of AgNPs, and the osteoblasts on the coating surface maintained the structure intact.
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Affiliation(s)
- Yunpeng Zhang
- Heping
Hospital Affiliated to Changzhi Medical College, Changzhi 046000, Shanxi, China
| | - Xiaorong Chen
- Changzhi
Medical College, Changzhi 046000, Shanxi, China
| | - Yuan Li
- Heping
Hospital Affiliated to Changzhi Medical College, Changzhi 046000, Shanxi, China
| | - Tian Bai
- Shaanxi
Key Laboratory of Biomedical Metal Materials, Northwest Institute for Non-ferrous Metal Research, Xi’an 710016, China
| | - Chen Li
- Changzhi
Medical College, Changzhi 046000, Shanxi, China
| | - Lingyan Jiang
- Heping
Hospital Affiliated to Changzhi Medical College, Changzhi 046000, Shanxi, China
| | - Yu Liu
- Heping
Hospital Affiliated to Changzhi Medical College, Changzhi 046000, Shanxi, China
| | - Changying Sun
- Heping
Hospital Affiliated to Changzhi Medical College, Changzhi 046000, Shanxi, China
| | - Wenhao Zhou
- Shaanxi
Key Laboratory of Biomedical Metal Materials, Northwest Institute for Non-ferrous Metal Research, Xi’an 710016, China
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8
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Bengur FB, Stoy C, Binko MA, Nerone WV, Fedor CN, Solari MG, Marra KG. Facial Nerve Repair: Bioengineering Approaches in Preclinical Models. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:364-378. [PMID: 33632013 DOI: 10.1089/ten.teb.2020.0381] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Injury to the facial nerve can occur after different etiologies and range from simple transection of the branches to varying degrees of segmental loss. Management depends on the extent of injury and options include primary repair for simple transections and using autografts, allografts, or conduits for larger gaps. Tissue engineering plays an important role to create artificial materials that are able to mimic the nerve itself without extra morbidity in the patients. The use of neurotrophic factors or stem cells inside the conduits or around the repair site is being increasingly studied to enhance neural recovery to a greater extent. Preclinical studies remain the hallmark for development of these novel approaches and translation into clinical practice. This review will focus on preclinical models of repair after facial nerve injury to help researchers establish an appropriate model to quantify recovery and analyze functional outcomes. Different bioengineered materials, including conduits and nerve grafts, will be discussed based on the experimental animals that were used and the defects introduced. Future directions to extend the applications of processed nerve allografts, bioengineered conduits, and cues inside the conduits to induce neural recovery after facial nerve injury will be highlighted.
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Affiliation(s)
- Fuat Baris Bengur
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Conrad Stoy
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mary A Binko
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Wayne Vincent Nerone
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Caroline Nadia Fedor
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mario G Solari
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Kacey G Marra
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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9
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Harley W, Yoshie H, Gentile C. Three-Dimensional Bioprinting for Tissue Engineering and Regenerative Medicine in Down Under: 2020 Australian Workshop Summary. ASAIO J 2021; 67:363-369. [PMID: 33741790 DOI: 10.1097/mat.0000000000001389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- William Harley
- From the Collins BioMicrosystems Laboratory (CBML), Department of Biomedical Engineering, University of Melbourne, Melbourne, Australia
| | | | - Carmine Gentile
- School of Biomedical Engineering/FEIT, University of Technology Sydney, Sydney, Australia
- Sydney Medical School/Faculty of Medicine and Health, University of Sydney, Sydney, Australia
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10
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Yonesi M, Garcia-Nieto M, Guinea GV, Panetsos F, Pérez-Rigueiro J, González-Nieto D. Silk Fibroin: An Ancient Material for Repairing the Injured Nervous System. Pharmaceutics 2021; 13:429. [PMID: 33806846 PMCID: PMC8004633 DOI: 10.3390/pharmaceutics13030429] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 12/25/2022] Open
Abstract
Silk refers to a family of natural fibers spun by several species of invertebrates such as spiders and silkworms. In particular, silkworm silk, the silk spun by Bombyx mori larvae, has been primarily used in the textile industry and in clinical settings as a main component of sutures for tissue repairing and wound ligation. The biocompatibility, remarkable mechanical performance, controllable degradation, and the possibility of producing silk-based materials in several formats, have laid the basic principles that have triggered and extended the use of this material in regenerative medicine. The field of neural soft tissue engineering is not an exception, as it has taken advantage of the properties of silk to promote neuronal growth and nerve guidance. In addition, silk has notable intrinsic properties and the by-products derived from its degradation show anti-inflammatory and antioxidant properties. Finally, this material can be employed for the controlled release of factors and drugs, as well as for the encapsulation and implantation of exogenous stem and progenitor cells with therapeutic capacity. In this article, we review the state of the art on manufacturing methodologies and properties of fiber-based and non-fiber-based formats, as well as the application of silk-based biomaterials to neuroprotect and regenerate the damaged nervous system. We review previous studies that strategically have used silk to enhance therapeutics dealing with highly prevalent central and peripheral disorders such as stroke, Alzheimer's disease, Parkinson's disease, and peripheral trauma. Finally, we discuss previous research focused on the modification of this biomaterial, through biofunctionalization techniques and/or the creation of novel composite formulations, that aim to transform silk, beyond its natural performance, into more efficient silk-based-polymers towards the clinical arena of neuroprotection and regeneration in nervous system diseases.
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Affiliation(s)
- Mahdi Yonesi
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain; (M.Y.); (G.V.G.)
- Silk Biomed SL, 28260 Madrid, Spain;
| | | | - Gustavo V. Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain; (M.Y.); (G.V.G.)
- Silk Biomed SL, 28260 Madrid, Spain;
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Fivos Panetsos
- Silk Biomed SL, 28260 Madrid, Spain;
- Neurocomputing and Neurorobotics Research Group, Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), 28040 Madrid, Spain
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain; (M.Y.); (G.V.G.)
- Silk Biomed SL, 28260 Madrid, Spain;
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain; (M.Y.); (G.V.G.)
- Silk Biomed SL, 28260 Madrid, Spain;
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain
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11
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Mechanical strength improvement of chitosan/hydroxyapatite scaffolds by coating and cross-linking. J Mech Behav Biomed Mater 2020; 114:104169. [PMID: 33160912 DOI: 10.1016/j.jmbbm.2020.104169] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 09/15/2020] [Accepted: 10/23/2020] [Indexed: 11/21/2022]
Abstract
Coating and cross-linking have been widely used to improve the properties of materials in tissue engineering. A chitosan/hydroxyapatite (CS/HA) comby scaffold with high porosity was prepared via a 3D printed pore-forming mold. The scaffold was then treated with gelatin (Gel) coating and was cross-linked by glutaraldehyde (GA) in order to improve the mechanical strength. The materials were characterized by infrared spectroscopy (IR) and X-ray diffraction (XRD). The structure of the scaffolds was observed by Scanning Electron Microscopy (SEM). Compression tests were carried out to evaluate the strength of the scaffolds. The behaviors and responses of preosteoblast cells on the scaffolds were studied as well. The results showed that gelatin coating and cross-linking significantly enhanced the mechanical strength of the porous scaffolds. Cell culture experiment indicated that the scaffold had good cytocompatibility. The combined application of 3DP structure construction and biopolymer coating/cross-linking would offer some new ideas in fabrication of porous scaffolds with enhanced strength and good biocompatibility for tissue engineering.
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12
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Houshyar S, Pillai MM, Saha T, Sathish-Kumar G, Dekiwadia C, Sarker SR, Sivasubramanian R, Shanks RA, Bhattacharyya A. Three-dimensional directional nerve guide conduits fabricated by dopamine-functionalized conductive carbon nanofibre-based nanocomposite ink printing. RSC Adv 2020; 10:40351-40364. [PMID: 35520827 PMCID: PMC9057509 DOI: 10.1039/d0ra06556k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/10/2020] [Accepted: 10/05/2020] [Indexed: 12/20/2022] Open
Abstract
Directional growth induced by dopamine-functionalized CNF-based nanocomposite ink printing.
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Affiliation(s)
- Shadi Houshyar
- School of Engineering
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - Mamatha M. Pillai
- Tissue Engineering Laboratory
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
| | - Tanushree Saha
- School of Engineering
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - G. Sathish-Kumar
- Functional, Innovative and Smart Textiles
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
| | - Chaitali Dekiwadia
- RMIT Microscopy and Microanalysis Facility
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - Satya Ranjan Sarker
- Department of Biotechnology and Genetic Engineering
- Jahangirnagar University
- Dhaka-1342
- Bangladesh
| | - R. Sivasubramanian
- Electrochemistry Laboratory
- PSG Institute of Advanced Studies
- Coimbatore- 641004
- India
| | - Robert A. Shanks
- School of Science
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3000
- Australia
| | - Amitava Bhattacharyya
- Functional, Innovative and Smart Textiles
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
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