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Akkurt Yıldırım M, Demirbilek M, Kızılbey K, Kaplan E, Türkoğlu N. Evaluation of triacetin on mechanical strength and free surface energy of PHBHHx: The prevention of intra-abdominal adhesion. J BIOACT COMPAT POL 2023. [DOI: 10.1177/08839115221149726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Several polymers are used for the preparation of biomaterials as membranes and films for tissue engineering applications. The most common plasticizer is PEG to obtain polymer-based biomaterials. On the other hand, triacetin is a non-toxic, FDA-approved plasticizer mostly used in the food industry. In this study, we used triacetin as a plasticizer to obtain hydrophobic membranes for the prevention of intra-abdominal adhesion. We selected a well-known polymer named PHBHHx which is a bacterial polyester generally used as supporting material for cell attachments in regenerative tissue applications. We evaluated the triacetin as a plasticizer and its effect on mechanical, thermal, surface area, pore size, and surface energy. The hydrophobic/hydrophilic contrast of a biomaterial surface determines the biological response. Surface hydrophobicity is critical for the cellular response. The contact angle tests of PHBHHx revealed that the hydrophilicity of the membrane was decreased following triacetin blending. Modification of the PHBHHx membrane by blending with triacetin caused a significant decrease in cell adhesion. The cell attachment rates of PHBHHx membranes were as 95 ± 5% on the first day, 34.5 ± 0.9% on third day, and 23 ± 1.5% on the fifth day, respectively. The rates of cell attachments on PHBHHx/triacetin membranes were determined as 79 ± 2.5% for the first day, 33 ± 2.7% for the third day, and 13 ± 2.1% for the fifth day, respectively. Besides, triacetin blending decreased the surface area from 38.790 to 32.379 m2/g. The elongation at breaks was observed as 128% for PHBHHx and 171% for PHBHHx/triacetin. Graphical abstract [Formula: see text]
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Affiliation(s)
- Meryem Akkurt Yıldırım
- Department of Molecular Biology and Genetics, Yıldız Technical University, Istanbul, Turkey
| | - Murat Demirbilek
- Advanced Technologies Application and Research Center, Hacettepe University, Ankara, Turkey
| | - Kadriye Kızılbey
- Biomedical Engineering Department, İstanbul Yeni Yüzyıl University, İstanbul, Turkey
| | - Engin Kaplan
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Istanbul University-Cerrahpasa, İstanbul, Turkey
| | - Nelisa Türkoğlu
- Department of Molecular Biology and Genetics, Yıldız Technical University, Istanbul, Turkey
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2
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Dhania S, Bernela M, Rani R, Parsad M, Kumar R, Thakur R. Polyhydroxybutyrate (PHB) in nanoparticulate form improves physical and biological performance of scaffolds. Int J Biol Macromol 2023; 236:123875. [PMID: 36870657 DOI: 10.1016/j.ijbiomac.2023.123875] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/16/2023] [Accepted: 02/25/2023] [Indexed: 03/06/2023]
Abstract
Polyhydroxyalkanoates (PHAs) are natural polyesters produced by microorganisms as a source of intracellular energy reserves. Due to their desirable material characteristics, these polymers have been thoroughly investigated for tissue engineering and drug delivery applications. A tissue engineering scaffold serves as a substitute of the native extracellular matrix (ECM) and plays a crucial role in tissue regeneration by providing temporary support for cells during natural ECM formation. In this study, porous, biodegradable scaffolds were prepared using native polyhydroxybutyrate (PHB) and PHB in nanoparticulate form using salt leaching method, to investigate the differences in the physicochemical properties such as crystallinity, hydrophobicity, surface morphology, roughness, and surface area and biological properties of the prepared scaffolds. As per the BET analysis, PHB nanoparticles-based (PHBN) scaffolds presented a significant difference in the surface area as compare to PHB scaffolds. PHBN scaffolds showed decreased crystallinity and improved mechanical strength as compared to PHB scaffolds. Thermogravimetry analysis shows delayed degradation of PHBN scaffolds. An examination of Vero cell lines' cell viability and adhesion over time revealed enhanced performance of PHBN scaffolds. Our research suggests that scaffold made of PHB nanoparticles could serve as a superior material for tissue engineering applications than its native form.
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Affiliation(s)
- Sunena Dhania
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | - Manju Bernela
- Department of Biotechnology, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Ruma Rani
- ICAR-National Research Centre on Equines, Hisar 125001, Haryana, India
| | - Minakshi Parsad
- Department of Animal Biotechnology, LUVAS, Hisar 125001, Haryana, India
| | - Rajender Kumar
- ICAR-National Research Centre on Equines, Hisar 125001, Haryana, India
| | - Rajesh Thakur
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India.
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Fabricated polyhydroxyalkanoates blend scaffolds enhance cell viability and cell proliferation. J Biotechnol 2023; 361:30-40. [PMID: 36427593 DOI: 10.1016/j.jbiotec.2022.11.014] [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: 07/18/2022] [Revised: 11/16/2022] [Accepted: 11/20/2022] [Indexed: 11/25/2022]
Abstract
For tissue engineering applications, cell adhesion and proliferation are crucial factors, and blending polymers is one of the most effective ways to create a biocompatible scaffold with desired properties. In order to create new potential porous, biodegradable scaffolds using salt leaching technique, poly(3-hydroxybutyrate) (PHB) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were blended in different ratios. SEM, BET, FTIR, and water contact angle measurements were used to analyze the scaffolds' porous surface, surface area, and roughness, chemical interaction, and hydrophilicity. Additionally, a hemolysis assay revealed that the mixtures were hemocompatible and had no impact on red blood cells. Different cells- Vero, Hela and MDBK cell lines cultured on the porous mats of these biopolymeric scaffolds exhibited significant increase in cell viability and attachment over time. The overall finding was that blended scaffolds exhibited reduced crystallinity, diverse porosity, higher surface area and hydrophilicity, and better cell viability, proliferation and adhesion. Our findings imply that a blended scaffold could be more suitable for use in tissue engineering applications.
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Dhania S, Bernela M, Rani R, Parsad M, Grewal S, Kumari S, Thakur R. Scaffolds the backbone of tissue engineering: Advancements in use of polyhydroxyalkanoates (PHA). Int J Biol Macromol 2022; 208:243-259. [PMID: 35278518 DOI: 10.1016/j.ijbiomac.2022.03.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 12/11/2022]
Abstract
Our body is built to heal from inside out naturally but wide-ranging medical conditions necessitate the need for artificial assistance, and therefore, something that can assist the body to heal wounds and damaged tissues quickly and efficiently is of utmost importance. Tissue engineering technology helps to regenerate new tissue to replace the diseased or injured one. The technology uses biodegradable porous three-dimensional scaffolds for mimicking the structure and functions of the natural extracellular matrix. The material and design of scaffolds are critical areas of biomaterial research. Biomaterial-based three-dimensional structures have been the most promising material to serve as scaffolds for seeding cells, both in vivo and in vitro. One such material is polyhydroxyalkanoates (PHAs) which are thermoplastic biopolyesters that are highly suitable for this purpose due to their enhanced biocompatibility, biodegradability, thermo-processability, diverse mechanical properties, non-toxicity and natural origin. Moreover, they have tremendous possibilities of customization through biological physical and chemical modification as well as blending with other materials. They are being used for several tissue engineering applications such as bone graft substitute, cardiovascular patches, stents, for nerve repair and in implantology as valves and sutures. The present review overviews usage of a multitude of PHA-based biomaterials for a wide range of tissue engineering applications, based on their properties suitable for the specific applications.
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Affiliation(s)
- Sunena Dhania
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | - Manju Bernela
- Department of Biotechnology, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Ruma Rani
- ICAR-National Research Centre on Equines, Hisar 125001, Haryana, India
| | - Minakshi Parsad
- Department of Animal Biotechnology, LUVAS, Hisar 125001, Haryana, India
| | - Sapna Grewal
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | - Santosh Kumari
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | - Rajesh Thakur
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India.
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Yıldırım MA, Demirbilek M, Gürsu H, Şahin Y, Türkoğlu N. Manipulating cell behavior on a bacterial macro-polymer poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) via tuning the S-doped graphene ratio. Int J Biol Macromol 2021; 182:2076-2086. [PMID: 34044031 DOI: 10.1016/j.ijbiomac.2021.05.099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/01/2021] [Accepted: 05/15/2021] [Indexed: 10/21/2022]
Abstract
Graphene is a material with various application potentials Graphene is a unique material with superiorities and has been applied in various fields for different purposes. Although studies on the utility of graphene oxide in the biomedical field are available, no evaluation has yet been done regarding the utility of sulfur doped (S-doped) graphene. The study focuses on the effect of blending the poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) membrane with sulfur heteroatom doped graphene and the evaluation of biological responses to S-doped graphene/PHBHHx. PHBHHx membranes were blended with 1%, 0.5%, 0.1% (w/v) S-doped graphene. The morphological (SEM and Microscopy), chemical (FTIR and Raman spectroscopy), and surface area (BET) characterizations of S-doped graphene/PHBHHx membranes were performed. The presence of S groups on the surface was determined with the EDS results. Besides, the swelling profile and biodegradation tendency of the membranes were evaluated. The differentiation of protein adhesion, cell viability, cell adhesion, and cell proliferation by the increasing content of S-doped graphene was examined. The contact angle analysis revealed that modification of PHBHHx with S-doped Graphene reduced the free surface energy of PHBHHx membranes. Blending with S-doped Graphene has decreased the polarity of the PHBHHx membrane. The protein adsorption on the PHBHHx membrane was determined as 10.12 ± 0.247 mg/ml. Protein absorption on 1%, 0.5% and 0.1% S-doped graphene/PHBHHx membranes were determined as 11.34 ± 0.551 mg/ml, 9.91 ± 0.294 mg/ml and 9.48 ± 0.093 mg/ml, respectively. The cell attachment to the surface decreased with the increasing amount of S-doped graphene, however, PHBHHx membranes with graphene did not affect cytotoxicity. S-doped graphene blended PHBHHx membrane seems like a suitable patch for biomedical treatments as a hydrophobic membrane where less cell adhesion and proliferation are required like the prevention of peritoneal adhesion.
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Affiliation(s)
- Meryem Akkurt Yıldırım
- Department of Molecular Biology and Genetics, Yildiz Technical University, 34349 Istanbul, Turkey
| | - Murat Demirbilek
- Advanced Technologies Application and Research Center, Hacettepe University, 06800 Ankara, Turkey
| | - Hürmüs Gürsu
- Department of Chemistry, Yildiz Technical University, 34220 Istanbul, Turkey
| | - Yücel Şahin
- Department of Chemistry, Yildiz Technical University, 34220 Istanbul, Turkey
| | - Nelisa Türkoğlu
- Department of Molecular Biology and Genetics, Yildiz Technical University, 34349 Istanbul, Turkey.
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6
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Ang SL, Shaharuddin B, Chuah JA, Sudesh K. Electrospun poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)/silk fibroin film is a promising scaffold for bone tissue engineering. Int J Biol Macromol 2020; 145:173-188. [DOI: 10.1016/j.ijbiomac.2019.12.149] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/08/2019] [Accepted: 12/17/2019] [Indexed: 01/03/2023]
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7
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KARAHALİLOĞLU Z. Cell-compatible PHB/silk fibroin composite nanofibermat for tissue engineering applications. Turk J Biol 2017. [DOI: 10.3906/biy-1610-46] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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8
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Unalan I, Colpankan O, Albayrak AZ, Gorgun C, Urkmez AS. Biocompatibility of plasma-treated poly(3-hydroxybutyrate-co-3-hydroxyvalerate) nanofiber mats modified by silk fibroin for bone tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:842-850. [PMID: 27524087 DOI: 10.1016/j.msec.2016.07.054] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 07/13/2016] [Accepted: 07/19/2016] [Indexed: 12/24/2022]
Abstract
The objective of this study was to produce biocompatible plasma-treated and silk-fibroin (SF) modified poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanofiber mats. The mats were plasma-treated using O2 or N2 gas to increase their hydrophilicity followed by SF immobilization for the improvement of biocompatibility. Contact angle measurements and SEM showed increased hydrophilicity and no disturbed morphology, respectively. Cell proliferation assay revealed that SF modification together with N2 plasma (PS/N2) promoted higher osteoblastic (SaOs-2) cell viability. Although, O2 plasma triggered more mineral formation on the mats, it showed poor cell viability. Consequently, the PS/N2 nanofiber mats would be a potential candidate for bone tissue engineering applications.
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Affiliation(s)
- Irem Unalan
- Biomedical Technologies Department, Graduate School of Natural and Applied Sciences, Dokuz Eylul University, Izmir, Turkey
| | - Oylum Colpankan
- Metallurgical and Materials Engineering Department, Faculty of Engineering, Dokuz Eylul University, Izmir, Turkey
| | - Aylin Ziylan Albayrak
- Metallurgical and Materials Engineering Department, Faculty of Engineering, Dokuz Eylul University, Izmir, Turkey.
| | - Cansu Gorgun
- Biomedical Technologies Department, Graduate School of Natural and Applied Sciences, Ege University, Izmir, Turkey
| | - Aylin Sendemir Urkmez
- Biomedical Technologies Department, Graduate School of Natural and Applied Sciences, Ege University, Izmir, Turkey; Bioengineering Department, Faculty of Engineering, Ege University, Izmir, Turkey
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9
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Zhao Z, Li Y, Zhang Y, Chen AZ, Li G, Zhang J, Xie MB. Development of silk fibroin modified poly(l-lactide)–poly(ethylene glycol)–poly(l-lactide) nanoparticles in supercritical CO2. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2014.07.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Chang HM, Wang ZH, Luo HN, Xu M, Ren XY, Zheng GX, Wu BJ, Zhang XH, Lu XY, Chen F, Jing XH, Wang L. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)-based scaffolds for tissue engineering. ACTA ACUST UNITED AC 2014; 47:533-9. [PMID: 25003631 PMCID: PMC4123831 DOI: 10.1590/1414-431x20143930] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 03/12/2014] [Indexed: 01/18/2023]
Abstract
Development and selection of an ideal scaffold is of importance for tissue engineering. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) is a biocompatible bioresorbable copolymer that belongs to the polyhydroxyalkanoate family. Because of its good biocompatibility, PHBHHx has been widely used as a cell scaffold for tissue engineering. This review focuses on the utilization of PHBHHx-based scaffolds in tissue engineering. Advances in the preparation, modification, and application of PHBHHx scaffolds are discussed.
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Affiliation(s)
- H M Chang
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Z H Wang
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - H N Luo
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - M Xu
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - X Y Ren
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - G X Zheng
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - B J Wu
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - X H Zhang
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - X Y Lu
- School of Life Science and Technology of Xi'an Jiaotong University, Xi'an, China
| | - F Chen
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - X H Jing
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - L Wang
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
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11
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Yang YJ, Kwon Y, Choi BH, Jung D, Seo JH, Lee KH, Cha HJ. Multifunctional Adhesive Silk Fibroin with Blending of RGD-Bioconjugated Mussel Adhesive Protein. Biomacromolecules 2014; 15:1390-8. [DOI: 10.1021/bm500001n] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yun Jung Yang
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Yunkyeoung Kwon
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Bong-Hyuk Choi
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Dooyup Jung
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Jeong Hyun Seo
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Ki Hoon Lee
- Department
of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 151-921, Korea
| | - Hyung Joon Cha
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
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12
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Barros JAG, Filippin-Monteiro FB, de Oliveira EM, Campa A, Catalani LH, Pitombo RDNM, Polakiewicz B. Cytotoxicity of PVPAC-treated bovine pericardium: a potential replacement for glutaraldehyde in biological heart valves. J Biomed Mater Res B Appl Biomater 2013; 102:574-82. [PMID: 24123957 DOI: 10.1002/jbm.b.33036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 07/05/2013] [Accepted: 09/02/2013] [Indexed: 12/22/2022]
Abstract
Acellular biological tissues, including bovine pericardium (BP), have been proposed as biomaterial for tissue engineering. BP is usually modified chemically to improve mechanical and biological properties using glutaraldehyde, the standard reagent for preservation of fresh bioprosthetic materials. Glutaraldehyde-fixed BP (Glut-BP), the most widely used material in heart valve manufacture, has been associated with calcification in vivo. In an attempt to reduce this issue and maintain its biocompatibility, this study assesses the physical properties and cytotoxicity of lyophilized BP treated with poly (vinylpyrrolidone-co-acrolein) (PVPAC-BP), a novel copolymer, as a substitute for glutaraldehyde. For that, PVPAC-BP surface ultrastructure, elastic function, water uptake and tissue calcification were evaluated. For the analysis of biocompatibility, fibroblasts (3T3-L1) and endothelial cells (HUVEC) were cultured on PVPAC-BP, Untreated-BP and Glut-BP. Nitric oxide (NO) release assay, fluorescence and SEM images of endothelial cells adhered on scaffolds were also performed. As results, the data show some advantages of PVPAC-BP over the Glut-BP. The PVPAC-BP maintains partially the original ultrastructure and elastic properties, improves scaffold hydration, and presents less calcium phosphate deposits. The cells demonstrated strong attachment, high proliferation rate, and formation of a monolayer on PVPAC-BP. Attached cells were also able to release NO de-monstrating regular metabolism. In conclusion, PVPAC may be considered as a promising alternative to BP treatment improving the efficiency of cell attachment and proliferation and also avoid immunogenicity.
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Affiliation(s)
- Janaina Aline Galvão Barros
- Faculty of Pharmaceutical Sciences, University of Sao Paulo, Lineu Prestes, 580 BL17, São Paulo, SP, Brazil; Institute of Chemistry, University of São Paulo, Lineu Prestes, 580 BL17, São Paulo, SP, Brazil
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13
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Yu X, Gu Z, Wang Y, Wang H. New strategies in cord blood cells transplantation. Cell Biol Int 2013; 37:865-74. [PMID: 23589409 DOI: 10.1002/cbin.10114] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Accepted: 03/22/2013] [Indexed: 12/26/2022]
Abstract
For patients lacking a human leucocyte antigen-matched donor, umbilical cord blood (UCB) is an ideal, alternative source of haematopoietic stem cells (HSCs) for transplantation purposes. UCB has many advantages over bone marrow or peripheral blood taken from volunteer donors. UCB is also an important source of other stem cells, including endothelial progenitors, mesenchymal stem cells, very small embryonic/epiblast-like (VSEL) stem cells, and unrestricted somatic stem cells, which are potentially suitable for regenerative medicine. However, a significant clinical problem is that the number of HSCs in one cord-blood unit is not enough for an adult transplantation. The development of new approaches including use of multiple donors, ex vivo expansion, increasing efficiency of homing and engraftment, retrieving more cells from the placenta and cord blood is of crucial importance for the delayed engraftment after UCB transplantation. In the future, UCB will emerge as a source of cells for cellular therapies associated with tissue repair and regeneration.
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Affiliation(s)
- Xin Yu
- Blood Transfusion Research Institute, Wuxi Red Cross Blood Center, 109 Xinmin Road, Wuxi, 214021, China
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14
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García-García JM, Quijada-Garrido I, López L, París R, Núñez-López MT, de la Peña Zarzuelo E, Garrido L. The surface modification of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) copolymers to improve the attachment of urothelial cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:362-9. [DOI: 10.1016/j.msec.2012.08.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 08/03/2012] [Accepted: 08/29/2012] [Indexed: 12/20/2022]
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15
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Yang HX, Sun M, Zhang Y, Zhou P. Degradable PHBHHx Modified by the Silk Fibroin for the Applications of Cardiovascular Tissue Engineering. ACTA ACUST UNITED AC 2011. [DOI: 10.5402/2011/389872] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Biodegradable polymer, poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx), has been used to fabricate the tissue-engineered cardiovascular scaffolds due to its controllable and suitable mechanical properties. However, the unsound biocompatibility of PHBHHx is still the unsolved problem till now. Silk fibroin (SF) with low inflammation, no blood clotting, and good cell and tissue compatibility in vitro and vivo is adopted as a surface modificator to improve the biocompatibility of PHBHHx. The adhesion of SF on PHBHHx surface was investigated by infrared spectroscopy and water contact angle. The proliferation and morphologies of human fibroblasts, human smooth muscle cells, endothelial-like cell line ECV304, and umbilical vein endothelial cells on the SF-modified PHBHHx were studied by the assays of MTT, H&E staining, DAPI staining, and the scanning electron microscopy. In sum, SF-modified PHBHHx scaffolds are highly biocompatible with cardiovascular-related cells, demonstrating its potential help for the extensive applications of PHBHHx in the cardiovascular regeneration.
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Affiliation(s)
- Hua-Xiao Yang
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Min Sun
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yi Zhang
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Ping Zhou
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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16
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BIOCOMPATIBILITY OF PHBHHx AND SILK FIBROIN-MODIFIED PHBHHx SCAFFOLDS WITH HUMAN UMBILICAL VEIN ENDOTHELIAL CELLS. ACTA POLYM SIN 2010. [DOI: 10.3724/sp.j.1105.2010.09444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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