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Talouki PY, Tackallou SH, Shojaei S, Benisi SZ, Goodarzi V. The role of three-dimensional scaffolds based on polyglycerol sebacate/ polycaprolactone/ gelatin in the presence of Nanohydroxyapatite in promoting chondrogenic differentiation of human adipose-derived mesenchymal stem cells. Biol Proced Online 2023; 25:9. [PMID: 36964481 PMCID: PMC10039520 DOI: 10.1186/s12575-023-00197-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/18/2023] [Indexed: 03/26/2023] Open
Abstract
BACKGROUND Tissue engineering for cartilage regeneration has made great advances in recent years, although there are still challenges to overcome. This study aimed to evaluate the chondrogenic differentiation of human adipose-derived mesenchymal stem cells (hADSCs) on three-dimensional scaffolds based on polyglycerol sebacate (PGS) / polycaprolactone (PCL) / gelatin(Gel) in the presence of Nanohydroxyapatite (nHA). MATERIALS AND METHODS In this study, a series of nHA-nanocomposite scaffolds were fabricated using 100:0:0, 60:40:0, and 60:20:20 weight ratios of PGS to PCL: Gel copolymers through salt leaching method. The morphology and porosity of prepared samples was characterized by SEM and EDX mapping analysis. Also, the dynamic contact angle and PBS adsorption tests are used to identify the effect of copolymerization and nanoparticles on scaffolds' hydrophilicity. The hydrolytic degradation properties were also analyzed. Furthermore, cell viability and proliferation as well as cell adhesion are evaluated to find out the biocompatibility. To determine the potential ability of nHA-nanocomposite scaffolds in chondrogenic differentiation, RT-PCR assay was performed to monitor the expression of collagen II, aggrecan, and Sox9 genes as markers of cartilage differentiation. RESULTS The nanocomposites had an elastic modulus within a range of 0.71-1.30 MPa and 0.65-0.43 MPa, in dry and wet states, respectively. The PGS/PCL sample showed a water contact angle of 72.44 ± 2.2°, while the hydrophilicity significantly improved by adding HA nanoparticles. It was found from the hydrolytic degradation study that HA incorporation can accelerate the degradation rate compared with PGS and PGS/PCL samples. Furthermore, the in vitro biocompatibility tests showed significant cell attachment, proliferation, and viability of adipose-derived mesenchymal stem cells (ADMSCs). RT-PCR also indicated a significant increase in collagen II, aggrecan and Sox9 mRNA levels. CONCLUSIONS Our findings demonstrated that these nanocomposite scaffolds promote the differentiation of hADSCs into chondrocytes possibly by the increase in mRNA levels of collagen II, aggrecan, and Sox9 as markers of chondrogenic differentiation. In conclusion, the addition of PCL, Gelatin, and HA into PGS is a practical approach to adjust the general features of PGS to prepare a promising scaffold for cartilage tissue engineering.
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Affiliation(s)
- Pardis Yousefi Talouki
- Department of Biomedical Engineering, Central Branch, Islamic Azad University, Tehran, Iran
| | - Saeed Hesami Tackallou
- Department of Biology, Central Branch, Islamic Azad University, P.O. Box 13145-784, Tehran, Iran.
| | - Shahrokh Shojaei
- Department of Biomedical Engineering, Central Branch, Islamic Azad University, Tehran, Iran
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Islamic Azad University, Central Branch, Tehran, Iran
| | - Soheila Zamanlui Benisi
- Department of Biomedical Engineering, Central Branch, Islamic Azad University, Tehran, Iran
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Islamic Azad University, Central Branch, Tehran, Iran
| | - Vahabodin Goodarzi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Wee SY, Kim TH, Kang HY, Park ES. Aesthetic Nasal Lobule Correction Using a Three-Dimensional Printed Polycaprolactone Implant. J Craniofac Surg 2021. [PMID: 34292245 DOI: 10.1097/SCS.0000000000007855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
ABSTRACT Nasal tip plasty is a surgery that determines important rhinoplasty outcomes. A variety of autologous and alloplastic implants are utilized in this procedure, including 1 synthetic material known as polycaprolactone (PCL). This study provides background on the ready-made three-dimensional printed PCL implant for nasal lobule correction, before discussing the usefulness and effectiveness of the implant. A total of 23 patients who visited our hospital between January 2018 and January 2020 were evaluated in this study. We used 3 types of PCL implant to get an ideal shape for the nasal tip: tipball (globular shape), droneball (rugby ball shape), and dumbbell (dumbbell shape). The authors compared nasolabial angle and tip projection at the preoperative and postoperative period via photographic anthropometric analysis. In 4 patients, we also examined the dead space between the implant and soft tissue via ultrasonography. The follow-up period averaged 9.5 months and no serious complications were found after surgery. The nasolabial angle and tip projection had an average postoperative increase of 6.4° and 0.044, respectively. Ultrasonography revealed the attachment of the implant at the insertion site and no dead space was found. This is the first attempt to apply a ready-made three-dimensional printed PCL implant to a nasal lobule correction procedure. As the implant was easy to use and showed good results, it may be useful for aesthetic purposes in future nasal tip plasty procedures.
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Yoon DM, Fisher JP. Natural and Synthetic Polymeric Scaffolds. Biomed Mater 2021. [DOI: 10.1007/978-3-030-49206-9_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Okamoto Y, Hasebe T, Bito K, Yano K, Matsumoto T, Tomita K, Hotta A. Fabrication of radiopaque drug-eluting beads based on Lipiodol/biodegradable-polymer for image-guided transarterial chemoembolization of unresectable hepatocellular carcinoma. Polym Degrad Stab 2020; 175:109106. [DOI: 10.1016/j.polymdegradstab.2020.109106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Kathawala MH, Ng WL, Liu D, Naing MW, Yeong WY, Spiller KL, Van Dyke M, Ng KW. Healing of Chronic Wounds: An Update of Recent Developments and Future Possibilities. Tissue Eng Part B Rev 2019; 25:429-444. [PMID: 31068101 DOI: 10.1089/ten.teb.2019.0019] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Chronic wounds are the result of disruptions in the body's usual process of healing. They are not only a source of significant pain and discomfort but also, more importantly, an unguarded port of entry for pathogens into the body. While our current understanding of this phenomenon is far from complete, findings in physiological patterns and advancements in wound healing technologies have helped develop wound management and healing solutions to this long-standing medical challenge. This review presents an overview of known wound healing mechanics, abnormalities that lead to chronic wounds, and a summary of established and new wound healing technologies. Various approaches to heal wounds are discussed, from dermal replacements to advanced biomaterial-based treatments, from cell-, synthetic-, and composite-based approaches to preclinical approaches, which make developing such products possible. While tested breakthrough products are described, the authors focused more on recently developed innovations, which are at varying stages of maturity. The review concludes with a note on future perspectives and opinions on where the field and industry are headed and where they should be. Impact Statement Wound healing is an important area of research and clinical practice, and has captured the attention of tissue engineers since the nascent beginnings of the discipline. Tissue-engineered skin was the first FDA-approved product, achieved in 1996. Despite this success, and the passage of time, healing wounds, particularly chronic wounds, remains a vexing challenge. This comprehensive review article will provide readers with a synopsis of current issues, research approaches, animal models, technologies, and products that span the continuum from early development to clinical studies, in the hope of fueling new interests and ideas to overcome this long-standing medical challenge.
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Affiliation(s)
| | - Wei Long Ng
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
| | - Dan Liu
- Singapore Institute of Manufacturing Technology (SIMTECH), Singapore, Singapore
| | - May Win Naing
- Singapore Institute of Manufacturing Technology (SIMTECH), Singapore, Singapore
| | - Wai Yee Yeong
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
| | - Kara L Spiller
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania
| | - Mark Van Dyke
- Department of Biomedical Engineering and Mechanics (BEAM), Virginia Polytechnic Institute and State University, Blacksburg, Virginia
| | - Kee Woei Ng
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.,Skin Research Institute of Singapore (SRIS), Singapore, Singapore.,Environmental Chemistry & Materials Centre, Nanyang Environment and Water Research Institute (NEWRI), Singapore, Singapore
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Liu Q, Wang H, Chen L, Li W, Zong Y, Sun Y, Li Z. Enzymatic degradation of fluorinated Poly(ε-caprolactone) (PCL) block copolymer films with improved hydrophobicity. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.04.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Sarvari R, Massoumi B, Zareh A, Beygi-Khosrowshahi Y, Agbolaghi S. Porous conductive and biocompatible scaffolds on the basis of polycaprolactone and polythiophene for scaffolding. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02732-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Allaf RM, Albarahmieh E, AlHamarneh BM. Solid-state compounding of immiscible PCL-PEO blend powders for molding processes. J Mech Behav Biomed Mater 2019; 97:198-211. [PMID: 31125892 DOI: 10.1016/j.jmbbm.2019.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 02/05/2023]
Abstract
Solid-state milling is a promising ecologically friendly method for fabricating polymeric blend and composite powder raw materials for several subsequent manufacturing processes. Biodegradable polymers, blends, and composites are expected to find extensive use by industry due to their environmental friendliness and acceptable mechanical and thermal properties for several applications. Poly-ε-caprolactone (PCL), poly-ethylene-oxide (PEO), and their blends have attracted so much attention to replace commodity polymers in future applications. Therefore, in the current research, bulk compounding of PCL-PEO blends with various compositions using solid-state cryomilling was investigated. Structural, mechanical, thermal, and hydrophilicity properties were examined on samples obtained by compression molding to explore the capabilities of the milling process for various applications. Morphology of the blends was explored by scanning electron microscopy (SEM), which showed a clear phase separation in blends after heating. Dispersed as well as co-continuous morphologies were achieved by varying composition. Differential scanning calorimetry (DSC) and x-ray diffraction (XRD) of the blends indicated insignificant amorphization by milling. Tensile strength, modulus, and percentage elongation at break of the blends demonstrated significant variations due to processing parameters.
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Affiliation(s)
- Rula M Allaf
- Industrial Engineering Department, School of Applied Technical Sciences, German-Jordanian University, Amman, 11180, Jordan.
| | - Esra'a Albarahmieh
- Pharmaceutical-Chemical Engineering Department, School of Applied Medical Sciences, German-Jordanian University, Amman, 11180, Jordan.
| | - Baider M AlHamarneh
- Mechanical and Maintenance Engineering Department, School of Applied Technical Sciences, German-Jordanian University, Amman, 11180, Jordan.
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Ye J, Liao X, Xiao W, Li S, Yang Q, Li G. The effects of molecular weight and supercritical CO2 on the phase morphology of organic solvent free porous scaffolds. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.06.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Rosa RP, Ferreira FV, Saravia APK, Rocco SA, Sforça ML, Gouveia RF, Lona LMF. A Combined Computational and Experimental Study on the Polymerization of ε-Caprolactone. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03288] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Raphael P. Rosa
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas-SP, Brazil
| | - Filipe V. Ferreira
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas-SP, Brazil
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas-SP, Brazil
| | - Ana Paola K. Saravia
- Department of Materials Engineering, Federal University of Paraná (UFPR), Curitiba-PR, Brazil
| | - Silvana A. Rocco
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas-SP, Brazil
| | - Mauricio L. Sforça
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas-SP, Brazil
| | - Rubia F. Gouveia
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas-SP, Brazil
| | - Liliane M. F. Lona
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas-SP, Brazil
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Abstract
Patients with extensive burns rely on the use of tissue engineered skin due to a lack of sufficient donor tissue, but it is a challenge to identify reliable and economical scaffold materials and donor cell sources for the generation of a functional skin substitute. The current review attempts to evaluate the performance of the wide range of biomaterials available for generating skin substitutes, including both natural biopolymers and synthetic polymers, in terms of tissue response and potential for use in the operating room. Natural biopolymers display an improved cell response, while synthetic polymers provide better control over chemical composition and mechanical properties. It is suggested that not one material meets all the requirements for a skin substitute. Rather, a composite scaffold fabricated from both natural and synthetic biomaterials may allow for the generation of skin substitutes that meet all clinical requirements including a tailored wound size and type, the degree of burn, the patient age, and the available preparation technique. This review aims to be a valuable directory for researchers in the field to find the optimal material or combination of materials based on their specific application.
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Affiliation(s)
- Mohammadali Sheikholeslam
- Sunnybrook Research Institute, University of Toronto, Toronto, ON, Canada
- Department of Surgery, Division of Plastic and Reconstructive Surgery, University of Toronto, Toronto, ON, Canada
| | - Meghan E E Wright
- Institute of Biomaterials & Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Marc G Jeschke
- Sunnybrook Research Institute, University of Toronto, Toronto, ON, Canada
- Department of Surgery, Division of Plastic and Reconstructive Surgery, University of Toronto, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Saeid Amini-Nik
- Sunnybrook Research Institute, University of Toronto, Toronto, ON, Canada
- Department of Surgery, Division of Plastic and Reconstructive Surgery, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
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Russo T, Gloria A, D'antò V, D'amora U, Ametrano G, Bollino F, De Santis R, Ausanio G, Catauro M, Rengo S, Ambrosio L. Poly(∊-Caprolactone) Reinforced with Sol-Gel Synthesized Organic-Inorganic Hybrid Fillers as Composite Substrates for Tissue Engineering. ACTA ACUST UNITED AC 2018; 8:146-52. [DOI: 10.5301/jabb.2010.6094] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Goodarzi P, Falahzadeh K, Nematizadeh M, Farazandeh P, Payab M, Larijani B, Tayanloo Beik A, Arjmand B. Tissue Engineered Skin Substitutes. Adv Exp Med Biol 2018; 1107:143-188. [PMID: 29855826 DOI: 10.1007/5584_2018_226] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The fundamental skin role is to supply a supportive barrier to protect body against harmful agents and injuries. Three layers of skin including epidermis, dermis and hypodermis form a sophisticated tissue composed of extracellular matrix (ECM) mainly made of collagens and glycosaminoglycans (GAGs) as a scaffold, different cell types such as keratinocytes, fibroblasts and functional cells embedded in the ECM. When the skin is injured, depends on its severity, the majority of mentioned components are recruited to wound regeneration. Additionally, different growth factors like fibroblast growth factor (FGF), epidermal growth factor (EGF), vascular endothelial growth factor (VEGF) are needed to orchestrated wound healing process. In case of large surface area wounds, natural wound repair seems inefficient. Inspired by nature, scientists in tissue engineering field attempt to engineered constructs mimicking natural healing process to promote skin restoration in untreatable injuries. There are three main types of commercially available engineered skin substitutes including epidermal, dermal, and dermoepidermal. Each of them could be composed of scaffold, desired cell types or growth factors. These substitutes could have autologous, allogeneic, or xenogeneic origin. Moreover, they may be cellular or acellular. They are used to accelerate wound healing and recover normal skin functions with pain relief. Although there are a wide variety of commercially available skin substitutes, almost none of them considered as an ideal equivalents required for proper wound healing.
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Affiliation(s)
- Parisa Goodarzi
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Khadijeh Falahzadeh
- Metabolomics and Genomics Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehran Nematizadeh
- Metabolomics and Genomics Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Parham Farazandeh
- Metabolomics and Genomics Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Moloud Payab
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Akram Tayanloo Beik
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Babak Arjmand
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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Morro A, Catalina F, Pablos J, Corrales T, Marin I, Abrusci C. Surface modification of poly(ε-caprolactone) by oxygen plasma for antibacterial applications. Biocompatibility and monitoring of live cells. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.07.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Hajiali F, Tajbakhsh S, Shojaei A. Fabrication and Properties of Polycaprolactone Composites Containing Calcium Phosphate-Based Ceramics and Bioactive Glasses in Bone Tissue Engineering: A Review. POLYM REV 2017. [DOI: 10.1080/15583724.2017.1332640] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Faezeh Hajiali
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Saeid Tajbakhsh
- College of Chemical Engineering, University of Tehran, Tehran, Iran
| | - Akbar Shojaei
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
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Wang H, Tong D, Wang L, Chen L, Yu N, Li Z. A facile strategy for fabricating PCL/PEG block copolymer with excellent enzymatic degradation. Polym Degrad Stab 2017; 140:64-73. [DOI: 10.1016/j.polymdegradstab.2017.04.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zirak Hassan Kiadeh S, Ghaee A, Mashak A, Mohammadnejad J. Preparation of chitosan-silica/PCL composite membrane as wound dressing with enhanced cell attachment. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shahrzad Zirak Hassan Kiadeh
- Department of Life Science Engineering, Faculty of New Sciences and Technologies; University of Tehran; PO Box: 143951374 Tehran Iran
| | - Azadeh Ghaee
- Department of Life Science Engineering, Faculty of New Sciences and Technologies; University of Tehran; PO Box: 143951374 Tehran Iran
| | - Arezou Mashak
- Iran Polymer and Petrochemical Institute; PO Box: 14965/115 Tehran Iran
| | - Javad Mohammadnejad
- Department of Life Science Engineering, Faculty of New Sciences and Technologies; University of Tehran; PO Box: 143951374 Tehran Iran
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Cheng CC, Huang JJ, Liao ZS, Huang SY, Lee DJ, Xin Z. Nucleobase-functionalized supramolecular polymer films with tailorable properties and tunable biodegradation rates. Polym Chem 2017. [DOI: 10.1039/c7py00182g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nucleobase-functionalized supramolecular films can directly self-assemble into a non-covalently cross-linked three-dimensional network structure with tuned physical properties and biodegradation rates.
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Affiliation(s)
- Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Jyun-Jie Huang
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Zhi-Sheng Liao
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Shan-You Huang
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Duu-Jong Lee
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
- Department of Chemical Engineering
| | - Zhong Xin
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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Figueira DR, Miguel SP, de Sá KD, Correia IJ. Production and characterization of polycaprolactone- hyaluronic acid/chitosan- zein electrospun bilayer nanofibrous membrane for tissue regeneration. Int J Biol Macromol 2016; 93:1100-1110. [DOI: 10.1016/j.ijbiomac.2016.09.080] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/08/2016] [Accepted: 09/20/2016] [Indexed: 12/25/2022]
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Salerno S, Messina A, Giordano F, Bader A, Drioli E, De Bartolo L. Dermal-epidermal membrane systems by using human keratinocytes and mesenchymal stem cells isolated from dermis. Mater Sci Eng C Mater Biol Appl 2017; 71:943-53. [PMID: 27987793 DOI: 10.1016/j.msec.2016.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 09/20/2016] [Accepted: 11/02/2016] [Indexed: 02/04/2023]
Abstract
Dermal-epidermal membrane systems were developed by co-culturing human keratinocytes with Skin derived Stem Cells (SSCs), which are Mesenchymal Stem Cells (MSCs) isolated from dermis, on biodegradable membranes of chitosan (CHT), polycaprolactone (PCL) and a polymeric blend of CHT and PCL. The membranes display physico-chemical, morphological, mechanical and biodegradation properties that could satisfy and fulfil specific requirements in skin tissue engineering. CHT membrane exhibits an optimal biodegradation rate for acute wounds; CHT-PCL for the chronic ones. On the other hand, PCL membrane in spite of its very slow biodegradation rate exhibits mechanical properties similar to in vivo dermis, a lower hydrophilic character, and a surface roughness, all properties that make it able to sustain cell adhesion and proliferation for in vitro skin models. Both CHT-PCL and PCL membranes guided epidermal and dermal differentiation of SSCs as pointed out by the expression of cytokeratins and the deposition of the ECM protein fibronectin, respectively. In the dermal-epidermal membrane systems, a more suitable microenvironment for the SSCs differentiation was promoted by the interactions and the mutual interplay with keratinocytes. Being skin tissue-biased stem cells committed to their specific final dermal and/or epidermal cell differentiation, SSCs are more suitable for skin tissue engineering than other adult MSCs with different origin. For this reason, they represent a useful autologous cell source for engineering skin substitutes for both in vivo and in vitro applications.
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Song Q, Xia Y, Hu S, Zhao J, Zhang G. Tuning the crystallinity and degradability of PCL by organocatalytic copolymerization with δ-hexalactone. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Affiliation(s)
- Orawan Suwantong
- School of Science; Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
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23
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Ning ST, Lee SY, Wei MF, Peng CL, Lin SYF, Tsai MH, Lee PC, Shih YH, Lin CY, Luo TY, Shieh MJ. Targeting Colorectal Cancer Stem-Like Cells with Anti-CD133 Antibody-Conjugated SN-38 Nanoparticles. ACS Appl Mater Interfaces 2016; 8:17793-804. [PMID: 27348241 DOI: 10.1021/acsami.6b04403] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Cancer stem-like cells play a key role in tumor development, and these cells are relevant to the failure of conventional chemotherapy. To achieve favorable therapy for colorectal cancer, PEG-PCL-based nanoparticles, which possess good biological compatibility, were fabricated as nanocarriers for the topoisomerase inhibitor, SN-38. For cancer stem cell therapy, CD133 (prominin-1) is a theoretical cancer stem-like cell (CSLC) marker for colorectal cancer and is a proposed therapeutic target. Cells with CD133 overexpression have demonstrated enhanced tumor-initiating ability and tumor relapse probability. To resolve the problem of chemotherapy failure, SN-38-loaded nanoparticles were conjugated with anti-CD133 antibody to target CD133-positive (CD133(+)) cells. In this study, anti-CD133 antibody-conjugated SN-38-loaded nanoparticles (CD133Ab-NPs-SN-38) efficiently bound to HCT116 cells, which overexpress CD133 glycoprotein. The cytotoxic effect of CD133Ab-NPs-SN-38 was greater than that of nontargeted nanoparticles (NPs-SN-38) in HCT116 cells. Furthermore, CD133Ab-NPs-SN-38 could target CD133(+) cells and inhibit colony formation compared with NPs-SN-38. In vivo studies in an HCT116 xenograft model revealed that CD133Ab-NPs-SN-38 suppressed tumor growth and retarded recurrence. A reduction in CD133 expression in HCT116 cells treated with CD133Ab-NPs-SN-38 was also observed in immunohistochemistry results. Therefore, this CD133-targeting nanoparticle delivery system could eliminate CD133-positive cells and is a potential cancer stem cell targeted therapy.
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Affiliation(s)
- Sin-Tzu Ning
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
| | - Shin-Yu Lee
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
| | - Ming-Feng Wei
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
| | - Cheng-Liang Peng
- Isotope Application Division, Institute of Nuclear Energy Research , Longtan, Taoyuan 325, Taiwan
| | - Susan Yun-Fan Lin
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
| | - Ming-Hsien Tsai
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
| | - Pei-Chi Lee
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
| | - Ying-Hsia Shih
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
- Isotope Application Division, Institute of Nuclear Energy Research , Longtan, Taoyuan 325, Taiwan
| | - Chun-Yen Lin
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
| | - Tsai-Yueh Luo
- Isotope Application Division, Institute of Nuclear Energy Research , Longtan, Taoyuan 325, Taiwan
| | - Ming-Jium Shieh
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University , Taipei 100, Taiwan
- Department of Oncology, National Taiwan University Hospital and College of Medicine , Taipei 100, Taiwan
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Wang W, He J, Feng B, Zhang Z, Zhang W, Zhou G, Cao Y, Fu W, Liu W. Aligned nanofibers direct human dermal fibroblasts to tenogenic phenotype in vitro and enhance tendon regeneration in vivo. Nanomedicine (Lond) 2016; 11:1055-72. [PMID: 27074092 DOI: 10.2217/nnm.16.24] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Aim: To explore the effect of aligned nanofibers on inducing tenogenic phenotype of human dermal fibroblasts (hDFs) in vitro and on inducing de novo tendon regeneration in vivo. Materials & methods: Random and aligned nanofibers were electrospun, seeded with hDFs and cultured in vitro, and in vivo implanted without cell seeding to bridge segmental defect of rat Achilles tendon. Results: In vitro, the well-aligned nanofibers could elongate hDFs, induce a tenogenic phenotype and form better organized neotendon respectively compared with random nanofibers. In vivo, the bridged nanofibers of aligned group could better recruit host cells and regenerate Achilles tendon de novo with enhanced tenogenic gene expression. Conclusion: Aligned nanofibers could induce tenogenic phenotype in vitro and regenerate tendon in vivo.
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Affiliation(s)
- Wenbo Wang
- Department of Plastic & Reconstructive Surgery, Shanghai Tissue Engineering Key Laboratory, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China
| | - Jing He
- Department of Anatomy & Neurobiology, Tongji University School of Medicine, Shanghai, PR China
| | - Bei Feng
- Department of Pediatric Cardiothoracic Surgery, Institute of Pediatric Translational Medicine, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao University, Shanghai, PR China
| | - Zhiyong Zhang
- Department of Plastic & Reconstructive Surgery, Shanghai Tissue Engineering Key Laboratory, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China
- National Tissue Engineering Center of China, Shanghai, PR China
| | - Wenjie Zhang
- Department of Plastic & Reconstructive Surgery, Shanghai Tissue Engineering Key Laboratory, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China
- National Tissue Engineering Center of China, Shanghai, PR China
| | - Guangdong Zhou
- Department of Plastic & Reconstructive Surgery, Shanghai Tissue Engineering Key Laboratory, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China
- National Tissue Engineering Center of China, Shanghai, PR China
| | - Yilin Cao
- Department of Plastic & Reconstructive Surgery, Shanghai Tissue Engineering Key Laboratory, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China
- National Tissue Engineering Center of China, Shanghai, PR China
| | - Wei Fu
- Department of Pediatric Cardiothoracic Surgery, Institute of Pediatric Translational Medicine, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao University, Shanghai, PR China
| | - Wei Liu
- Department of Plastic & Reconstructive Surgery, Shanghai Tissue Engineering Key Laboratory, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China
- National Tissue Engineering Center of China, Shanghai, PR China
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Tollemar V, Collier ZJ, Mohammed MK, Lee MJ, Ameer GA, Reid RR. Stem cells, growth factors and scaffolds in craniofacial regenerative medicine. Genes Dis 2016; 3:56-71. [PMID: 27239485 PMCID: PMC4880030 DOI: 10.1016/j.gendis.2015.09.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 09/22/2015] [Indexed: 02/08/2023] Open
Abstract
Current reconstructive approaches to large craniofacial skeletal defects are often complicated and challenging. Critical-sized defects are unable to heal via natural regenerative processes and require surgical intervention, traditionally involving autologous bone (mainly in the form of nonvascularized grafts) or alloplasts. Autologous bone grafts remain the gold standard of care in spite of the associated risk of donor site morbidity. Tissue engineering approaches represent a promising alternative that would serve to facilitate bone regeneration even in large craniofacial skeletal defects. This strategy has been tested in a myriad of iterations by utilizing a variety of osteoconductive scaffold materials, osteoblastic stem cells, as well as osteoinductive growth factors and small molecules. One of the major challenges facing tissue engineers is creating a scaffold fulfilling the properties necessary for controlled bone regeneration. These properties include osteoconduction, osetoinduction, biocompatibility, biodegradability, vascularization, and progenitor cell retention. This review will provide an overview of how optimization of the aforementioned scaffold parameters facilitates bone regenerative capabilities as well as a discussion of common osteoconductive scaffold materials.
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Affiliation(s)
- Viktor Tollemar
- The University of Chicago Pritzker School of Medicine, Chicago, IL 60637, USA
- Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
- Laboratory of Craniofacial Biology and Development, Section of Plastic and Reconstructive Surgery, Department of Surgery, The University of Chicago Medicine, Chicago, IL 60637, USA
| | - Zach J. Collier
- The University of Chicago Pritzker School of Medicine, Chicago, IL 60637, USA
- Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Maryam K. Mohammed
- The University of Chicago Pritzker School of Medicine, Chicago, IL 60637, USA
- Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Michael J. Lee
- Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Guillermo A. Ameer
- Department of Surgery, Feinberg School of Medicine, Chicago, IL 60611, USA
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60208, USA
| | - Russell R. Reid
- Laboratory of Craniofacial Biology and Development, Section of Plastic and Reconstructive Surgery, Department of Surgery, The University of Chicago Medicine, Chicago, IL 60637, USA
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Uto K, Mano SS, Aoyagi T, Ebara M. Substrate Fluidity Regulates Cell Adhesion and Morphology on Poly(ε-caprolactone)-Based Materials. ACS Biomater Sci Eng 2016; 2:446-453. [DOI: 10.1021/acsbiomaterials.6b00058] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Koichiro Uto
- Biomaterials
Unit, International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Sharmy S. Mano
- Biomaterials
Unit, International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takao Aoyagi
- Biomaterials
Unit, International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Mitsuhiro Ebara
- Biomaterials
Unit, International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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27
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Houcine A, Delalleau A, Heraud S, Guiraud B, Payre B, Duplan H, Delisle MB, Damour O, Bessou-Touya S. How biophysicalin vivotesting techniques can be used to characterize full thickness skin equivalents. Skin Res Technol 2015; 22:284-94. [PMID: 26508353 DOI: 10.1111/srt.12259] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2015] [Indexed: 11/30/2022]
Affiliation(s)
- A. Houcine
- Centre de Microscopie Electronique Appliquée à la Biologie; Faculté de Médecine Rangueil; Toulouse III; Université P. Sabatier; Toulouse France
| | | | - S. Heraud
- Banque de tissus et cellules; Laboratoire des substituts cutanés; Hospices Civils de Lyon and LBTI, UMR 5305; Lyon France
| | - B. Guiraud
- Département Pharmacologie; Pierre Fabre, R&D PFDC; Toulouse Cedex France
| | - B. Payre
- Centre de Microscopie Electronique Appliquée à la Biologie; Faculté de Médecine Rangueil; Toulouse III; Université P. Sabatier; Toulouse France
| | - H. Duplan
- Département Pharmacologie; Pierre Fabre, R&D PFDC; Toulouse Cedex France
| | - M.-B. Delisle
- Centre de Microscopie Electronique Appliquée à la Biologie; Faculté de Médecine Rangueil; Toulouse III; Université P. Sabatier; Toulouse France
- CHU Toulouse et INSERM U 1037; Toulouse Cedex France
| | - O. Damour
- Banque de tissus et cellules; Laboratoire des substituts cutanés; Hospices Civils de Lyon and LBTI, UMR 5305; Lyon France
| | - S. Bessou-Touya
- Département Pharmacologie; Pierre Fabre, R&D PFDC; Toulouse Cedex France
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Schöne AC, Kratz K, Schulz B, Reiche J, Santer S, Lendlein A. Surface pressure-induced isothermal 2D- to 3D-transitions in Langmuir films of poly(ε-caprolactone)s and oligo(ε-caprolactone) based polyesterurethanes. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3638] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anne-Christin Schöne
- Institute of Chemistry; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
- Institute of Biomaterial Science; Helmholtz-Zentrum Geesthacht; Kantstr. 55 14513 Teltow Germany
| | - Karl Kratz
- Institute of Biomaterial Science; Helmholtz-Zentrum Geesthacht; Kantstr. 55 14513 Teltow Germany
| | - Burkhard Schulz
- Institute of Chemistry; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
- Institute of Biomaterial Science; Helmholtz-Zentrum Geesthacht; Kantstr. 55 14513 Teltow Germany
| | - Jürgen Reiche
- Institute of Physics and Astronomy; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
| | - Svetlana Santer
- Institute of Physics and Astronomy; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
| | - Andreas Lendlein
- Institute of Chemistry; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
- Institute of Biomaterial Science; Helmholtz-Zentrum Geesthacht; Kantstr. 55 14513 Teltow Germany
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Yildirimer L, Seifalian AM. Sterilization-Induced Changes in Surface Topography of Biodegradable POSS-PCLU and the Cellular Response of Human Dermal Fibroblasts. Tissue Eng Part C Methods 2015; 21:614-30. [DOI: 10.1089/ten.tec.2014.0270] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Lara Yildirimer
- Division of Surgery & Interventional Science, UCL Centre for Nanotechnology & Regenerative Medicine, University College London, London, United Kingdom
| | - Alexander M. Seifalian
- Division of Surgery & Interventional Science, UCL Centre for Nanotechnology & Regenerative Medicine, University College London, London, United Kingdom
- Royal Free London NHS Foundation Trust Hospital, London, United Kingdom
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30
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Ghavidel Mehr N, Hoemann CD, Favis BD. Chitosan surface modification of fully interconnected 3D porous poly(ε-caprolactone) by the LbL approach. POLYMER 2015; 64:112-21. [DOI: 10.1016/j.polymer.2015.03.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Affiliation(s)
- A. Ye. Papuga
- Institute of Molecular Biology and Genetics, NAS of Ukraine
| | - L. L. Lukash
- Institute of Molecular Biology and Genetics, NAS of Ukraine
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Allı S, Tığlı Aydın RS, Allı A, Hazer B. Biodegradable Poly(ε-Caprolactone)-Based Graft Copolymers Via Poly(Linoleic Acid): In Vitro Enzymatic Evaluation. J AM OIL CHEM SOC 2015; 92:449-58. [DOI: 10.1007/s11746-015-2611-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bhardwaj N, Sow WT, Devi D, Ng KW, Mandal BB, Cho NJ. Silk fibroin–keratin based 3D scaffolds as a dermal substitute for skin tissue engineering. Integr Biol (Camb) 2015; 7:53-63. [DOI: 10.1039/c4ib00208c] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Development of highly vascular dermal tissue-engineered skin substitutes with appropriate mechanical properties and cellular cues is in need for significant advancement in the field of dermal reconstruction.
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Affiliation(s)
- Nandana Bhardwaj
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore-639798
- Centre for Biomimetic Sensor Science
- Nanyang Technological University
| | - Wan Ting Sow
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore-639798
| | - Dipali Devi
- Seri-Biotechnology Unit
- Life Science Division
- Institute of Advanced Study in Science and Technology
- Guwahati-781035
- India
| | - Kee Woei Ng
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore-639798
| | - Biman B. Mandal
- Department of Biotechnology
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Nam-Joon Cho
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore-639798
- Centre for Biomimetic Sensor Science
- Nanyang Technological University
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Prasad T, Shabeena EA, Vinod D, Kumary TV, Anil Kumar PR. Characterization and in vitro evaluation of electrospun chitosan/polycaprolactone blend fibrous mat for skin tissue engineering. J Mater Sci Mater Med 2015; 26:5352. [PMID: 25578706 DOI: 10.1007/s10856-014-5352-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 08/03/2014] [Indexed: 06/04/2023]
Abstract
The electrospinning technique allows engineering biomimetic scaffolds within micro to nanoscale range mimicking natural extracellular matrix (ECM). Chitosan (CS) and polycaprolactone (PCL) were dissolved in a modified solvent mixture consisting of formic acid and acetone (3:7) and mixed in different weight ratios to get chitosan-polycaprolactone [CS-PCL] blend solutions. The CS-PCL blend polymer was electrospun in the same solvent system and compared with PCL. The physicochemical characterization of the electrospun fibrous mats was done using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), tensile test, swelling properties, water contact angle (WCA) analysis, surface profilometry and thermo gravimetric analysis (TGA). The CS-PCL fibrous mat showed decreased hydrophobicity. The CS-PCL mats also showed improved swelling property, tensile strength, thermal stability and surface roughness. The cytocompatibility of the CS-PCL and PCL fibrous mats were examined using mouse fibroblast (L-929) cell line by direct contact and cellular activity with extract of materials confirmed non-cytotoxic nature. The potential of CS-PCL and PCL fibrous mats as skin tissue engineering scaffolds were assessed by cell adhesion, viability, proliferation and actin distribution using human keratinocytes (HaCaT) and L-929 cell lines. Results indicate that CS-PCL is a better scaffold for attachment and proliferation of keratinocytes and is a potential material for skin tissue engineering.
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Affiliation(s)
- Tilak Prasad
- Tissue Culture Laboratory, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Thiruvananthapuram, 695012, Kerala, India
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Becker J, Lu L, Runge MB, Zeng H, Yaszemski MJ, Dadsetan M. Nanocomposite bone scaffolds based on biodegradable polymers and hydroxyapatite. J Biomed Mater Res A 2014; 103:2549-57. [PMID: 25504776 DOI: 10.1002/jbm.a.35391] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 11/26/2014] [Accepted: 12/04/2014] [Indexed: 01/19/2023]
Abstract
In tissue engineering, development of an osteoconductive construct that integrates with host tissue remains a challenge. In this work, the effect of bone-like minerals on maturation of pre-osteoblast cells was investigated using polymer-mineral scaffolds composed of poly(propylene fumarate)-co-poly(caprolactone) (PPF-co-PCL) and nano-sized hydroxyapatite (HA). The HA of varying concentrations was added to an injectable formulation of PPF-co-PCL and the change in thermal and mechanical properties of the scaffolds was evaluated. No change in onset of degradation temperature was observed due to the addition of HA, however compressive and tensile moduli of copolymer changed significantly when HA amounts were increased in composite formulation. The change in mechanical properties of copolymer was found to correlate well to HA concentration in the constructs. Electron microscopy revealed mineral nucleation and a change in surface morphology and the presence of calcium and phosphate on surfaces was confirmed using energy dispersive X-ray analysis. To characterize the effect of mineral on attachment and maturation of pre-osteoblasts, W20-17 cells were seeded on HA/copolymer composites. We demonstrated that cells attached more to the surface of HA containing copolymers and their proliferation rate was significantly increased. Thus, these findings suggest that HA/PPF-co-PCL composite scaffolds are capable of inducing maturation of pre-osteoblasts and have the potential for use as scaffold in bone tissue engineering.
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Affiliation(s)
- Johannes Becker
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905.,Department of Traumatology and Sports Injuries, University Hospital Salzburg, Paracelsus Medical University Salzburg, Müllner Hauptstr, 48, Salzburg, 5020, Austria
| | - Lichun Lu
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
| | - M Brett Runge
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
| | - Heng Zeng
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
| | - Michael J Yaszemski
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
| | - Mahrokh Dadsetan
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
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Cerqueira MT, da Silva LP, Santos TC, Pirraco RP, Correlo VM, Reis RL, Marques AP. Gellan gum-hyaluronic acid spongy-like hydrogels and cells from adipose tissue synergize promoting neoskin vascularization. ACS Appl Mater Interfaces 2014; 6:19668-19679. [PMID: 25361388 DOI: 10.1021/am504520j] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Currently available substitutes for skin wound healing often result in the formation of nonfunctional neotissue. Thus, urgent care is still needed to promote an effective and complete regeneration. To meet this need, we proposed the assembling of a construct that takes advantage of cell-adhesive gellan gum-hyaluronic acid (GG-HA) spongy-like hydrogels and a powerful cell-machinery obtained from adipose tissue, human adipose stem cells (hASCs), and microvascular endothelial cells (hAMECs). In addition to a cell-adhesive character, GG-HA spongy-like hydrogels overpass limitations of traditional hydrogels, such as reduced physical stability and limited manipulation, due to improved microstructural arrangement characterized by pore wall thickening and increased mean pore size. The proposed constructs combining cellular mediators of the healing process within the spongy-like hydrogels that intend to recapitulate skin matrix aim to promote neoskin vascularization. Stable and off-the-shelf dried GG-HA polymeric networks, rapidly rehydrated at the time of cell seeding then depicting features of both sponges and hydrogels, enabled the natural cell entrapment/encapsulation and attachment supported by cell-polymer interactions. Upon transplantation into mice full-thickness excisional wounds, GG-HA spongy-like hydrogels absorbed the early inflammatory cell infiltrate and led to the formation of a dense granulation tissue. Consequently, spongy-like hydrogel degradation was observed, and progressive wound closure, re-epithelialization, and matrix remodelling was improved in relation to the control condition. More importantly, GG-HA spongy-like hydrogels promoted a superior neovascularization, which was enhanced in the presence of human hAMECs, also found in the formed neovessels. These observations highlight the successful integration of a valuable matrix and prevascularization cues to target angiogenesis/neovascularization in skin full-thickness excisional wounds.
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Affiliation(s)
- Mariana Teixeira Cerqueira
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark4806-909, Taipas, Guimarães, Portugal
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Zhang J, Zhao S, Zhu M, Zhu Y, Zhang Y, Liu Z, Zhang C. 3D-printed magnetic Fe 3O 4/MBG/PCL composite scaffolds with multifunctionality of bone regeneration, local anticancer drug delivery and hyperthermia. J Mater Chem B 2014; 2:7583-7595. [PMID: 32261896 DOI: 10.1039/c4tb01063a] [Citation(s) in RCA: 147] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this study, three-dimensional (3D) magnetic Fe3O4 nanoparticles containing mesoporous bioactive glass/polycaprolactone (Fe3O4/MBG/PCL) composite scaffolds have been fabricated by the 3D-printing technique. The physiochemical properties, in vitro bioactivity, anticancer drug delivery, mechanical strength, magnetic heating ability and cell response of Fe3O4/MBG/PCL scaffolds were systematically investigated. The results showed that Fe3O4/MBG/PCL scaffolds had uniform macropores of 400 μm, high porosity of 60% and excellent compressive strength of 13-16 MPa. The incorporation of magnetic Fe3O4 nanoparticles into MBG/PCL scaffolds did not influence their apatite mineralization ability but endowed excellent magnetic heating ability and significantly stimulated proliferation, alkaline phosphatase (ALP) activity, osteogenesis-related gene expression (RUNX2, OCN, BSP, BMP-2 and Col-1) and extra-cellular matrix (ECM) mineralization of human bone marrow-derived mesenchymal stem cells (h-BMSCs). Moreover, using doxorubicin (DOX) as a model anticancer drug, Fe3O4/MBG/PCL scaffolds exhibited a sustained drug release for use in local drug delivery therapy. Therefore, the 3D-printed Fe3O4/MBG/PCL scaffolds showed the potential multifunctionality of enhanced osteogenic activity, local anticancer drug delivery and magnetic hyperthermia.
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Affiliation(s)
- Jianhua Zhang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, People's Republic of China
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Duan HY, Ye L, Wu X, Guan Q, Yang XF, Han F, Liang N, Wang ZF, Wang ZG. The in vivo characterization of electrospun heparin-bonded polycaprolactone in small-diameter vascular reconstruction. Vascular 2014; 23:358-65. [PMID: 25208900 DOI: 10.1177/1708538114550737] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective To evaluate the possibility of using heparin-bonded polycaprolactone grafts to replace small-diameter arteries. Methods Polycaprolactone was bonded with heparin. The activated partial thromboplastin time of heparin-bonded polycaprolactone grafts was determined in vitro. Small-diameter grafts were electrospun with heparin-bonded polycaprolactone and polycaprolactone and were implanted in dogs to substitute part of the femoral artery. Angiography was used to investigate the patency and aneurysm of the grafts after transplantation. After angiography, the patent grafts were explanted for histology analysis. The degradation of the grafts and the collagen content of the grafts were measured. Results Activated partial thromboplastin time tests in vitro showed that heparin-bonded polycaprolactone grafts exhibit obvious anticoagulation. Arteriography showed that two heparin-bonded polycaprolactone and three polycaprolactone grafts were obstructed. Other grafts were patent, without aneurysm formation. Histological analysis showed that the tested grafts degraded evidently over the implantation time and that the luminal surface of the tested grafts had become covered by endothelial cells. Collagen deposition in heparin-bonded polycaprolactone increased with time. There were no calcifications in the grafts. Gel permeation chromatography showed the heparin-bonded polycaprolactone explants at 12 weeks lose about 32% for Mw and 24% for Mn. The collagen content on the heparin-bonded polycaprolactone grafts increased over time. Conclusion This preliminary study demonstrates that heparin-bonded polycaprolactone is a suitable graft for small artery reconstruction. However, heparin-bonded polycaprolactone degrades more rapidly than polycaprolactone in vivo.
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Affiliation(s)
- Hong-Yong Duan
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, PR China
| | - Xin Wu
- Department of Vascular Surgery, Xuanwu Hospital, Capital Medical University, Beijing, PR China
| | - Qiang Guan
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Xiao-Fei Yang
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Feng Han
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Ning Liang
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Zhen-Feng Wang
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Zhong-Gao Wang
- Department of Vascular Surgery, Xuanwu Hospital, Capital Medical University, Beijing, PR China
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Ghavidel Mehr N, Li X, Ariganello MB, Hoemann CD, Favis BD. Poly(ε-caprolactone) scaffolds of highly controlled porosity and interconnectivity derived from co-continuous polymer blends: model bead and cell infiltration behavior. J Mater Sci Mater Med 2014; 25:2083-2093. [PMID: 24962985 DOI: 10.1007/s10856-014-5256-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 06/09/2014] [Indexed: 06/03/2023]
Abstract
Porous structures destined for tissue engineering applications should ideally show controlled and narrow pore size distributions with fully interconnected pores. This study focuses on the development of novel poly(ε-caprolactone) (PCL) structures with fully connected pores of 84, 116, 141, and 162 μm average diameter, from melt blending of PCL with poly(ethylene oxide) (PEO) at the co-continuous composition, followed by static annealing and selective extraction of PEO. Our results demonstrate a low onset concentration for PEO continuity and a broad region of phase inversion. A novel in vitro assay was used to compare scaffold infiltration by 10-μm diameter polystyrene beads intended to mimic trypsinized human bone marrow stromal cells (hBMSCs). Beads showed a linear increase in the extent of scaffold infiltration with increasing pore size, whereas BMSCs infiltrated 162 and 141 μm pores, below which the cells aggregated and adhered near the seeding area with low infiltration into the porous device. While providing a baseline for non-aggregated systems, the beads closely mimic trypsinized cells at pore sizes equal to or larger than 141 μm, where optimal retention and distribution of hBMSCs are detected. A cytotoxicity assay using L929 cells showed that these scaffolds were cytocompatible and no cell necrosis was detected. This study shows that a melt blending approach produces porous PCL scaffolds of highly controlled pore size, narrow size distribution and complete interconnectivity, while the bead model system reveals the baseline potential for a homogeneous, non-aggregated distribution of hBMSCs at all penetration depths.
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Affiliation(s)
- Nima Ghavidel Mehr
- Department of Chemical Engineering, École Polytechnique de Montréal, C.P. 6079, Succ. Centre-Ville, Montreal, QC, H3C 3A7, Canada
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Abstract
Autologous engineered skin (ES) offers promise as a treatment for massive full thickness burns. Unfortunately, ES is orders of magnitude weaker than normal human skin causing it to be difficult to apply surgically and subject to damage by mechanical shear in the early phases of engraftment. In addition, no manufacturing strategy has been developed to tune ES biomechanics to approximate the native biomechanics at different anatomic locations. To enhance and tune ES biomechanics, a coaxial (CoA) electrospun scaffold platform was developed from polycaprolactone (PCL, core) and gelatin (shell). The ability of the coaxial fiber core diameter to control both scaffold and tissue mechanics was investigated along with the ability of the gelatin shell to facilitate cell adhesion and skin development compared to pure gelatin, pure PCL, and a gelatin-PCL blended fiber scaffold. CoA ES exhibited increased cellular adhesion and metabolism versus PCL alone or gelatin-PCL blend and promoted the development of well stratified skin with a dense dermal layer and a differentiated epidermal layer. Biomechanics of the scaffold and ES scaled linearly with core diameter suggesting that this scaffold platform could be utilized to tailor ES mechanics for their intended grafting site and reduce graft damage in vitro and in vivo.
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Trujillo NA, Popat KC. Increased Adipogenic and Decreased Chondrogenic Differentiation of Adipose Derived Stem Cells on Nanowire Surfaces. Materials 2014; 7:2605-2630. [PMID: 28788586 PMCID: PMC5453350 DOI: 10.3390/ma7042605] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 03/18/2014] [Accepted: 03/20/2014] [Indexed: 12/14/2022]
Abstract
Despite many advances in tissue engineering, there are still significant challenges associated with restructuring, repairing, or replacing damaged tissue in the body. Currently, a major obstacle has been trying to develop a scaffold for cartilage tissue engineering that provides the correct mechanical properties to endure the loads associated with articular joints as well as promote cell-scaffold interactions to aid in extracellular matrix deposition. In addition, adipogenic tissue engineering is widely growing due to an increased need for more innovative reconstructive therapies following adipose tissue traumas and cosmetic surgeries. Recently, lipoaspirate tissue has been identified as a viable alternative source for mesenchymal stem cells because it contains a supportive stroma that can easily be isolated. Adipose derived stem cells (ADSCs) can differentiate into a variety of mesodermal lineages including the adipogenic and chondrogenic phenotypes. Biodegradable polymeric scaffolds have been shown to be a promising alternative and stem cells have been widely used to evaluate the compatibility, viability, and bioactivity of these materials. Polycaprolactone is a bioresorbable polymer, which has been widely used for biomedical and tissue engineering applications. The fundamental concept behind successful synthetic tissue-engineered scaffolds is to promote progenitor cell migration, adhesion, proliferation, and induce differentiation, extracellular matrix synthesis, and finally integration with host tissue. In this study, we investigated the adhesion, proliferation, and chondrogenic and adipogenic differentiation of ADSCs on nanowire surfaces. A solvent-free gravimetric template technique was used to fabricate polycaprolactone nanowires surfaces. The results indicated that during the growth period i.e., initial 7 days of culture, the nanowire surfaces (NW) supported adhesion and proliferation of the cells that had elongated morphologies. However, cell on surfaces without nanowires had non-elongated morphologies. Further, immunofluorescence imaging of marker proteins showed that the nanowires surfaces did not appear to support chondrogenic differentiation whereas supported adipogenic differentiation of ADSCs.
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Affiliation(s)
- Nathan A Trujillo
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA.
| | - Ketul C Popat
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA.
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Cerqueira MT, da Silva LP, Santos TC, Pirraco RP, Correlo VM, Marques AP, Reis RL. Human skin cell fractions fail to self-organize within a gellan gum/hyaluronic acid matrix but positively influence early wound healing. Tissue Eng Part A 2014; 20:1369-78. [PMID: 24299468 DOI: 10.1089/ten.tea.2013.0460] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Split-thickness autografts still are the current gold standard to treat skin, upon severe injuries. Nonetheless, autografts are dependent on donor site availability and often associated to poor quality neoskin. The generation of dermal-epidermal substitutes by tissue engineering is seen as a promising strategy to overcome this problematic. However, solutions that can be safely and conveniently transplanted in one single surgical intervention are still very challenging as their production normally requires long culture time, and graft survival is many times compromised by delayed vascularization upon transplantation. This work intended to propose a strategy that circumvents the prolonged and laborious preparation period of skin substitutes and allows skin cells self-organization toward improved healing. Human dermal/epidermal cell fractions were entrapped directly from isolation within a gellan gum/hyaluronic acid (GG-HA) spongy-like hydrogel formed from an off-the-shelf dried polymeric network. Upon transplantation into full-thickness mice wounds, the proposed constructs accelerated the wound closure rate and re-epithelialization, as well as tissue neovascularization. A synergistic effect of the GG-HA matrix and the transplanted cells over those processes was demonstrated at early time points. Despite the human-derived and chimeric blood vessels found, the proposed matrix did not succeed in prolonging cells residence time and in sustaining the self-organization of transplanted human cells possibly due to primitive degradation. Despite this, the herein proposed approach open the opportunity to tackle wound healing at early stages contributing to re-epithelialization and neovascularization.
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Affiliation(s)
- Mariana T Cerqueira
- 1 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, University of Minho , Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
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Abstract
Polymeric scaffolds for tissue engineering can be prepared with a multitude of different techniques. Many diverse approaches have recently been under development. The adaptation of conventional preparation methods, such as electrospinning, induced phase separation of polymer solutions or porogen leaching, which were developed originally for other research areas, are described. In addition, the utilization of novel fabrication techniques, such as rapid prototyping or solid free-form procedures, with their many different methods to generate or to embody scaffold structures or the usage of self-assembly systems that mimic the properties of the extracellular matrix are also described. These methods are reviewed and evaluated with specific regard to their utility in the area of tissue engineering.
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Affiliation(s)
- Thomas Weigel
- Department of Polymer Technology, Institute of Polymer Research, GKSS Research Center Geesthacht, Kantstr 55, D-14513 Teltow, Germany.
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Zheng R, Duan H, Xue J, Liu Y, Feng B, Zhao S, Zhu Y, Liu Y, He A, Zhang W, Liu W, Cao Y, Zhou G. The influence of Gelatin/PCL ratio and 3-D construct shape of electrospun membranes on cartilage regeneration. Biomaterials 2014; 35:152-64. [DOI: 10.1016/j.biomaterials.2013.09.082] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 09/24/2013] [Indexed: 01/23/2023]
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Choy DKS, Nga VDW, Lim J, Lu J, Chou N, Yeo TT, Teoh SH. Brain tissue interaction with three-dimensional, honeycomb polycaprolactone-based scaffolds designed for cranial reconstruction following traumatic brain injury. Tissue Eng Part A 2013; 19:2382-9. [PMID: 23691928 DOI: 10.1089/ten.tea.2012.0733] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Following traumatic brain injury (TBI), resultant voids are unable to support injections of suspension treatments, leading to ineffective healing. Moreover, without a structure to support the large defect, the defect site suffers from mechanical instability, which may impair the healing process. Therefore, having a delivery vehicle that can temporarily fill and provide mechanical support to the defect site may alleviate the healing process. In this work, we reported for the first time, the inflammatory response of brain tissue with polycaprolactone (PCL) and PCL-tricalcium phosphate (TCP) scaffolds designed and fabricated for cranial reconstruction. After cranial defects were created in Sprague-Dawley rats, PCL and PCL-TCP scaffolds were implanted for a period of 1 week and 1 month. Following histology and immunofluorescence staining with the ionized calcium binding adaptor molecule-1 (IBA-1), glial fibrillary acidic protein (GFAP), nestin, and neuronal nuclei (NeuN), results indicated that IBA-1-positive activated microglia were observed across all groups, and declined significantly by 1 month (p<0.05). Interestingly, IBA-1-positive microglia were significantly fewer in the PCL-TCP group (p<0.05), suggesting a relatively milder inflammatory response. A decrease in the number of GFAP-positive cells among all groups over time (>29%) was also observed. Initially, astrocyte hypertrophy was observed proximal to the TBI site (55% in PCL and PCL-TCP groups, 75% in control groups), but it subsided by 1 month. Proximal to the TBI site, nestin immunoreactivity was intense during week 1, and which reduced by 1 month across all groups. NeuN-positive neurons were shrunken proximal to the TBI site (<0.9 mm), 32% smaller in the PCL-TCP group and 27% smaller in the PCL group. Based on above data indicating the comparatively milder, initial inflammatory response of brain tissue to PCL-TCP scaffolds, it is suggested that PCL-TCP scaffolds have notable clinical advantages as compared to PCL scaffolds.
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Affiliation(s)
- David Kim Seng Choy
- 1 Division of Neurosurgery, National University Hospital Singapore , Singapore, Singapore
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Parizek M, Slepickova Kasalkova N, Bacakova L, Svindrych Z, Slepicka P, Bacakova M, Lisa V, Svorcik V. Adhesion, growth, and maturation of vascular smooth muscle cells on low-density polyethylene grafted with bioactive substances. Biomed Res Int 2013; 2013:371430. [PMID: 23586032 DOI: 10.1155/2013/371430] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 02/14/2013] [Indexed: 11/18/2022]
Abstract
The attractiveness of synthetic polymers for cell colonization can be affected by physical, chemical, and biological modification of the polymer surface. In this study, low-density polyethylene (LDPE) was treated by an Ar(+) plasma discharge and then grafted with biologically active substances, namely, glycine (Gly), polyethylene glycol (PEG), bovine serum albumin (BSA), colloidal carbon particles (C), or BSA+C. All modifications increased the oxygen content, the wettability, and the surface free energy of the materials compared to the pristine LDPE, but these changes were most pronounced in LDPE with Gly or PEG, where all the three values were higher than in the only plasma-treated samples. When seeded with vascular smooth muscle cells (VSMCs), the Gly- or PEG-grafted samples increased mainly the spreading and concentration of focal adhesion proteins talin and vinculin in these cells. LDPE grafted with BSA or BSA+C showed a similar oxygen content and similar wettability, as the samples only treated with plasma, but the nano- and submicron-scale irregularities on their surface were more pronounced and of a different shape. These samples promoted predominantly the growth, the formation of a confluent layer, and phenotypic maturation of VSMC, demonstrated by higher concentrations of contractile proteins alpha-actin and SM1 and SM2 myosins. Thus, the behavior of VSMC on LDPE can be regulated by the type of bioactive substances that are grafted.
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Tarafder S, Nansen K, Bose S. Lovastatin release from polycaprolactone coated β-tricalcium phosphate: effects of pH, concentration and drug-polymer interactions. Mater Sci Eng C Mater Biol Appl 2013; 33:3121-8. [PMID: 23706191 DOI: 10.1016/j.msec.2013.02.049] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 01/30/2013] [Accepted: 02/27/2013] [Indexed: 01/22/2023]
Abstract
The approach of local drug delivery from polymeric coating is currently getting significant attention for both soft and hard tissue engineering applications for sustained and controlled release. The chemistry of the polymer and the drug, and their interactions influence the release kinetics to a great extent. Here, we examine lovastatin release behaviour from polycaprolactone (PCL) coating on β-tricalcium phosphate (β-TCP). Lovastatin was incorporated into biodegradable water insoluble PCL coating. A burst and uncontrolled lovastatin release was observed from bare β-TCP, whereas controlled and sustained release was observed from PCL coating. A higher lovastatin release was observed pH7.4 as compared to pH5.0. Effect of PCL concentration on lovastatin release was opposite at pH7.4 and 5.0. At pH5.0 lovastatin release was decreased with increasing PCL concentration, whereas release was increased with increasing PCL concentration at pH7.4. High Ca(2+) ion concentration due to high solubility of β-TCP and degradation of PCL coating were observed at pH5.0 compared to no detectable Ca(2+) ion release and visible degradation of PCL coating at pH7.4. The hydrophilic-hydrophobic and hydrophobic-hydrophobic interactions between lovastatin and PCL were found to be the key factors controlling the diffusion dominated release kinetics of lovastatin from PCL coating over dissolution and degradation processes. Understanding the lovastatin release chemistry from PCL will be beneficial for designing drug delivery devices from polymeric coating or scaffolds.
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Affiliation(s)
- Solaiman Tarafder
- W M Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920, USA
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Van Tam JK, Uto K, Ebara M, Pagliari S, Forte G, Aoyagi T. Mesenchymal stem cell adhesion but not plasticity is affected by high substrate stiffness. Sci Technol Adv Mater 2012; 13:064205. [PMID: 27877532 PMCID: PMC5099765 DOI: 10.1088/1468-6996/13/6/064205] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 10/01/2012] [Indexed: 06/06/2023]
Abstract
The acknowledged ability of synthetic materials to induce cell-specific responses regardless of biological supplies provides tissue engineers with the opportunity to find the appropriate materials and conditions to prepare tissue-targeted scaffolds. Stem and mature cells have been shown to acquire distinct morphologies in vitro and to modify their phenotype when grown on synthetic materials with tunable mechanical properties. The stiffness of the substrate used for cell culture is likely to provide cells with mechanical cues mimicking given physiological or pathological conditions, thus affecting the biological properties of cells. The sensitivity of cells to substrate composition and mechanical properties resides in multiprotein complexes called focal adhesions, whose dynamic modification leads to cytoskeleton remodeling and changes in gene expression. In this study, the remodeling of focal adhesions in human mesenchymal stem cells in response to substrate stiffness was followed in the first phases of cell-matrix interaction, using poly-ε-caprolactone planar films with similar chemical composition and different elasticity. As compared to mature dermal fibroblasts, mesenchymal stem cells showed a specific response to substrate stiffness, in terms of adhesion, as a result of differential focal adhesion assembly, while their multipotency as a bulk was not significantly affected by matrix compliance. Given the sensitivity of stem cells to matrix mechanics, the mechanobiology of such cells requires further investigations before preparing tissue-specific scaffolds.
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Affiliation(s)
| | | | | | | | - Giancarlo Forte
- Biomaterials Unit, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takao Aoyagi
- Biomaterials Unit, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Corrales T, Larraza I, Catalina F, Portolés T, Ramírez-Santillán C, Matesanz M, Abrusci C. In vitro biocompatibility and antimicrobial activity of poly(ε-caprolactone)/montmorillonite nanocomposites. Biomacromolecules 2012; 13:4247-56. [PMID: 23153018 DOI: 10.1021/bm301537g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A triblock copolymer based on poly(ε-caprolactone) (PCL) and 2-(N,N-diethylamino)ethyl methacrylate (DEAEMA)/2-(methyl-7-nitrobenzofurazan)amino ethyl acrylate (NBD-NAcri), was synthesized via atom transfer radical polymerization (ATRP). The corresponding chlorohydrated copolymer, named as PCL-b-DEAEMA, was prepared and anchored via cationic exchange on montmorillonite (MMT) surface. (PCL)/layered silicate nanocomposites were prepared through melt intercalation, and XRD and TEM analysis showed an exfoliated/intercalated morphology for organomodified clay. The surface characterization of the nanocomposites was undertaken by using contact angle and AFM. An increase in the contact angle was observed in the PCL/MMT(PCL-b-DEAEMA) nanocomposites with respect to PCL. The AFM analysis showed that the surface of the nanocomposites became rougher with respect to the PCL when MMTk10 or MMT(PCL-b-DEAEMA) was incorporated, and the value increased with the clay content. The antimicrobial activity of the nanocomposites against B. subtilis and P. putida was tested. It is remarkable that the biodegradation of PCL/MMT(PCL-b-DEAEMA) nanocomposites, monitored by the production of carbon dioxide and by chemiluminescence emission, was inhibited or retarded with respect to the PCL and PCL/1-MMTk10. It would indicate that nature of organomodifier in the clay play an important role in B. subtilis and P. putida adhesion processes. Biocompatibility studies demonstrate that both PCL and PCL/MMT materials allow the culture of murine L929 fibroblasts on its surface with high viability, very low apoptosis, and without plasma membrane damage, making these materials very adequate for tissue engineering.
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Affiliation(s)
- T Corrales
- Polymer Photochemistry Group, Instituto de Ciencia y Tecnología de Polímeros, C.S.I.C. Juan de la Cierva 3, 28006 Madrid, Spain.
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