1
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Kołbuk D, Ciechomska M, Jeznach O, Sajkiewicz P. Effect of crystallinity and related surface properties on gene expression of primary fibroblasts. RSC Adv 2022; 12:4016-4028. [PMID: 35425452 PMCID: PMC8980997 DOI: 10.1039/d1ra07237d] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/30/2021] [Indexed: 12/13/2022] Open
Abstract
The biomaterial-cells interface is one of the most fundamental issues in tissue regeneration. Despite many years of scientific work, there is no clear answer to what determines the desired adhesion of cells and the synthesis of ECM proteins. Crystallinity is a characteristic of the structure that influences the surface and bulk properties of semicrystalline polymers used in medicine. The crystallinity of polycaprolactone (PCL) was varied by changing the molecular weight of the polymer and the annealing procedure. Measurements of surface free energy showed differences related to substrate crystallinity. Additionally, the water contact angle was determined to characterise surface wettability which was crucial in the analysis of protein absorption. X-ray photoelectron spectroscopy was used to indicate oxygen bonds amount on the surface. Finally, the impact of the crystallinity, and related properties were demonstrated on dermal fibroblasts' response. Cellular proliferation and expression of selected genes: α-SMA, collagen I, TIMP, integrin were analysed.
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Affiliation(s)
- Dorota Kołbuk
- Institute of Fundamental Technological Research, Polish Academy of Sciences Pawińskiego 5b 02-106 Warsaw Poland
| | - Marzena Ciechomska
- National Institute of Geriatrics, Rheumatology and Rehabilitation Spartańska 1 02-637 Warsaw Poland
| | - Oliwia Jeznach
- Institute of Fundamental Technological Research, Polish Academy of Sciences Pawińskiego 5b 02-106 Warsaw Poland
| | - Paweł Sajkiewicz
- Institute of Fundamental Technological Research, Polish Academy of Sciences Pawińskiego 5b 02-106 Warsaw Poland
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2
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Miao Y, Cui H, Dong Z, Ouyang Y, Li Y, Huang Q, Wang Z. Structural Evolution of Polyglycolide and Poly(glycolide -co-lactide) Fibers during In Vitro Degradation with Different Heat-Setting Temperatures. ACS OMEGA 2021; 6:29254-29266. [PMID: 34746613 PMCID: PMC8567347 DOI: 10.1021/acsomega.1c04974] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
The structural evolution of polyglycolide (PGA) and poly(glycolide-co-lactide) (P(GA-co-LA)) with 8% LA content fibers with different heat-setting temperatures was investigated during in vitro degradation using WAXD, SAXS, and mechanical property tests. It was found that the PGA fiber was more susceptible to the degradation process than the P(GA-co-LA) fiber and a higher heat-setting temperature reduced the degradation rate of the two samples. The weight and mechanical properties of the samples showed a gradual decrease during degradation. We proposed that the degradation of PGA and P(GA-co-LA) fibers proceeded in four stages. A continuous increase in crystallinity during the early stage of degradation and a gradual decline during the later period indicated that preferential hydrolytic degradation occurred in the amorphous regions, followed by a further degradation in the crystalline regions. The cleavage-induced crystallization occurred during the later stage of degradation, contributing to an appreciable decrease in the long period and lamellar thickness of both PGA and P(GA-co-LA) samples. The introduction of LA units into the PGA skeleton reduced the difference in the degradation rate between the crystalline and amorphous regions, and they were simultaneously degraded in the early stage of degradation, leading to a degradation mechanism different from that of the PGA fiber.
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Affiliation(s)
- Yushuang Miao
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | | | - Zhimin Dong
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Yi Ouyang
- Department
of Radiation Oncology & State Key Laboratory of Oncology in South
China, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, China
| | - Yiguo Li
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Qing Huang
- China
Textile Academy, Beijing 100025, China
| | - Zongbao Wang
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
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3
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Matsuno H, Totani M, Yamamoto A, Haraguchi M, Ozawa M, Tanaka K. Water-induced surface reorganization of bioscaffolds composed of an amphiphilic hyperbranched polymer. Polym J 2019. [DOI: 10.1038/s41428-019-0212-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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4
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The potential use of gentamicin sulfate-loaded poly(l-lactic acid)-sericin hybrid scaffolds for bone tissue engineering. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2520-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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5
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Al-Jarsha M, Moulisová V, Leal-Egaña A, Connell A, Naudi KB, Ayoub AF, Dalby MJ, Salmerón-Sánchez M. Engineered Coatings for Titanium Implants To Present Ultralow Doses of BMP-7. ACS Biomater Sci Eng 2018; 4:1812-1819. [PMID: 29862317 PMCID: PMC5973637 DOI: 10.1021/acsbiomaterials.7b01037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/22/2018] [Indexed: 01/11/2023]
Abstract
![]()
The
ongoing research to improve the clinical outcome of titanium
implants has resulted in the implemetation of multiple approches to
deliver osteogenic growth factors accelerating and sustaining osseointegration.
Here we show the presentation of human bone morphogenetic protein
7 (BMP-7) adsorbed to titanium discs coated with poly(ethyl acrylate)
(PEA). We have previously shown that PEA promotes fibronectin organization
into nanonetworks exposing integrin- and growth-factor-binding domains,
allowing a synergistic interaction at the integrin/growth factor receptor
level. Here, titanium discs were coated with PEA and fibronectin and
then decorated with ng/mL doses of BMP-7. Human mesenchymal stem cells
were used to investigate cellular responses on these functionalized
microenvironments. Cell adhesion, proliferation, and mineralization,
as well as osteogenic markers expression (osteopontin and osteocalcin)
revealed the ability of the system to be more potent in osteodifferentiation
of the mesenchymal cells than combinations of titanium and BMP-7 in
absence of PEA coatings. This work represents a novel strategy to
improve the biological activity of titanium implants with BMP-7.
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Affiliation(s)
- Mohammed Al-Jarsha
- Department of Oral and Maxillofacial Surgery, Dental Hospital and School, Glasgow University, G2 3JZ Glasgow, United Kingdom.,Department of Oral Surgery, College of Dentistry, University of Baghdad, 10001Baghdad, Iraq
| | - Vladimíra Moulisová
- The Centre for the Cellular Microenvironment, University of Glasgow, G12 8LT Glasgow, United Kingdom
| | - Aldo Leal-Egaña
- The Centre for the Cellular Microenvironment, University of Glasgow, G12 8LT Glasgow, United Kingdom
| | - Andrew Connell
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, G12 8QQ Glasgow, United Kingdom
| | - Kurt B Naudi
- Department of Oral and Maxillofacial Surgery, Dental Hospital and School, Glasgow University, G2 3JZ Glasgow, United Kingdom
| | - Ashraf F Ayoub
- Department of Oral and Maxillofacial Surgery, Dental Hospital and School, Glasgow University, G2 3JZ Glasgow, United Kingdom
| | - Matthew J Dalby
- The Centre for the Cellular Microenvironment, University of Glasgow, G12 8LT Glasgow, United Kingdom
| | - Manuel Salmerón-Sánchez
- The Centre for the Cellular Microenvironment, University of Glasgow, G12 8LT Glasgow, United Kingdom
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6
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Ogoke O, Oluwole J, Parashurama N. Bioengineering considerations in liver regenerative medicine. J Biol Eng 2017; 11:46. [PMID: 29204185 PMCID: PMC5702480 DOI: 10.1186/s13036-017-0081-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 09/25/2017] [Indexed: 12/19/2022] Open
Abstract
Background Liver disease contributes significantly to global disease burden and is associated with rising incidence and escalating costs. It is likely that innovative approaches, arising from the emerging field of liver regenerative medicine, will counter these trends. Main body Liver regenerative medicine is a rapidly expanding field based on a rich history of basic investigations into the nature of liver structure, physiology, development, regeneration, and function. With a bioengineering perspective, we discuss all major subfields within liver regenerative medicine, focusing on the history, seminal publications, recent progress within these fields, and commercialization efforts. The areas reviewed include fundamental aspects of liver transplantation, liver regeneration, primary hepatocyte cell culture, bioartificial liver, hepatocyte transplantation and liver cell therapies, mouse liver repopulation, adult liver stem cell/progenitor cells, pluripotent stem cells, hepatic microdevices, and decellularized liver grafts. Conclusion These studies highlight the creative directions of liver regenerative medicine, the collective efforts of scientists, engineers, and doctors, and the bright outlook for a wide range of approaches and applications which will impact patients with liver disease.
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Affiliation(s)
- Ogechi Ogoke
- Department of Chemical and Biological Engineering, University at Buffalo (State University of New York), Furnas Hall, Buffalo, NY 14260 USA.,Clinical and Translation Research Center (CTRC), University at Buffalo (State University of New York), 875 Ellicott St., Buffalo, NY 14203 USA
| | - Janet Oluwole
- Clinical and Translation Research Center (CTRC), University at Buffalo (State University of New York), 875 Ellicott St., Buffalo, NY 14203 USA.,Department of Biomedical Engineering, University at Buffalo (State University of New York), Furnas Hall, 907 Furnas Hall, Buffalo, NY 14260 USA
| | - Natesh Parashurama
- Department of Chemical and Biological Engineering, University at Buffalo (State University of New York), Furnas Hall, Buffalo, NY 14260 USA.,Clinical and Translation Research Center (CTRC), University at Buffalo (State University of New York), 875 Ellicott St., Buffalo, NY 14203 USA.,Department of Biomedical Engineering, University at Buffalo (State University of New York), Furnas Hall, 907 Furnas Hall, Buffalo, NY 14260 USA
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7
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Shojaee M, Bashur CA. Compositions Including Synthetic and Natural Blends for Integration and Structural Integrity: Engineered for Different Vascular Graft Applications. Adv Healthc Mater 2017; 6. [PMID: 28371505 DOI: 10.1002/adhm.201700001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 02/13/2017] [Indexed: 11/07/2022]
Abstract
Tissue engineering approaches for small-diameter arteries require a scaffold that simultaneously maintains patency by preventing thrombosis and intimal hyperplasia, maintains its structural integrity after grafting, and allows integration. While synthetic and extracellular matrix-derived materials can provide some of these properties individually, developing a scaffold that provides the balanced properties needed for vascular graft survival in the clinic has been particularly challenging. After 30 years of research, there are now several scaffolds currently in clinical trials. However, these products are either being investigated for large-diameter applications or they require pre-seeding of endothelial cells. This progress report identifies important challenges unique to engineering vascular grafts for high pressure arteries less than 4 mm in diameter (e.g., coronary artery), and discusses limitations with the current usage of the term "small-diameter." Next, the composition and processing techniques used for generating tissue engineered vascular grafts (TEVGs) are discussed, with a focus on the benefits of blended materials. Other scaffolds for non-tissue engineering approaches and stents are also briefly mentioned for comparison. Overall, this progress report discusses the importance of defining the most critical challenges for small diameter TEVGs, developing new scaffolds to provide these properties, and determining acceptable benchmarks for scaffold responses in the body.
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8
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Rezabeigi E, Wood-Adams PM, Drew RAL. Crystallization of polylactic acid underin situdeformation during nonsolvent-induced phase separation. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24350] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ehsan Rezabeigi
- Department of Mechanical and Industrial Engineering; Concordia University; Montreal Quebec Canada H3G 1M8
| | - Paula M. Wood-Adams
- Department of Mechanical and Industrial Engineering; Concordia University; Montreal Quebec Canada H3G 1M8
| | - Robin A. L. Drew
- Department of Mechanical and Industrial Engineering; Concordia University; Montreal Quebec Canada H3G 1M8
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9
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Sekuła M, Domalik-Pyzik P, Morawska-Chochół A, Bobis-Wozowicz S, Karnas E, Noga S, Boruczkowski D, Adamiak M, Madeja Z, Chłopek J, Zuba-Surma EK. Polylactide- and polycaprolactone-based substrates enhance angiogenic potential of human umbilical cord-derived mesenchymal stem cells in vitro - implications for cardiovascular repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:521-533. [PMID: 28532062 DOI: 10.1016/j.msec.2017.03.281] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/04/2017] [Accepted: 03/29/2017] [Indexed: 01/06/2023]
Abstract
Recent approaches in tissue regeneration focus on combining innovative achievements of stem cell biology and biomaterial sciences to develop novel therapeutic strategies for patients. Growing recent evidence indicates that mesenchymal stem cells harvested from human umbilical cord Wharton's jelly (hUC-MSCs) are a new valuable source of cells for autologous as well as allogeneic therapies in humans. hUC-MSCs are multipotent, highly proliferating cells with prominent immunoregulatory activity. In this study, we evaluated the impact of widely used FDA approved poly(α-esters) including polylactide (PLA) and polycaprolactone (PCL) on selected biological properties of hUC-MSCs in vitro. We found that both polymers can be used as non-toxic substrates for ex vivo propagation of hUC-MSCs as shown by no major impact on cell proliferation or viability. Moreover, PCL significantly enhanced the migratory capacity of hUC-MSCs. Importantly, genetic analysis indicated that both polymers promoted the angiogenic differentiation potential of hUC-MSCs with no additional chemical stimulation. These results indicate that PLA and PCL enhance selected biological properties of hUC-MSCs essential for their regenerative capacity including migratory and proangiogenic potential, which are required for effective vascular repair in vivo. Thus, PLA and PCL-based scaffolds combined with hUC-MSCs may be potentially employed as future novel grafts in tissue regeneration such as blood vessel reconstruction.
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Affiliation(s)
- Małgorzata Sekuła
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 7 Gronostajowa St., 30-387 Krakow, Poland; Malopolska Centre of Biotechnology, Jagiellonian University, 7A Gronostajowa St., 30-387 Krakow, Poland
| | - Patrycja Domalik-Pyzik
- Department of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, Poland
| | - Anna Morawska-Chochół
- Department of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, Poland
| | - Sylwia Bobis-Wozowicz
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 7 Gronostajowa St., 30-387 Krakow, Poland
| | - Elżbieta Karnas
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 7 Gronostajowa St., 30-387 Krakow, Poland; Malopolska Centre of Biotechnology, Jagiellonian University, 7A Gronostajowa St., 30-387 Krakow, Poland
| | - Sylwia Noga
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 7 Gronostajowa St., 30-387 Krakow, Poland; Malopolska Centre of Biotechnology, Jagiellonian University, 7A Gronostajowa St., 30-387 Krakow, Poland
| | | | - Marta Adamiak
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 7 Gronostajowa St., 30-387 Krakow, Poland
| | - Zbigniew Madeja
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 7 Gronostajowa St., 30-387 Krakow, Poland
| | - Jan Chłopek
- Department of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, Poland.
| | - Ewa K Zuba-Surma
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 7 Gronostajowa St., 30-387 Krakow, Poland.
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10
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Torino E, Aruta R, Sibillano T, Giannini C, Netti PA. Synthesis of semicrystalline nanocapsular structures obtained by Thermally Induced Phase Separation in nanoconfinement. Sci Rep 2016; 6:32727. [PMID: 27604818 PMCID: PMC5015022 DOI: 10.1038/srep32727] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/08/2016] [Indexed: 12/18/2022] Open
Abstract
Phase separation of a polymer solution exhibits a peculiar behavior when induced in a nanoconfinement. The energetic constraints introduce additional interactions between the polymer segments that reduce the number of available configurations. In our work, this effect is exploited in a one-step strategy called nanoconfined-Thermally Induced Phase Separation (nc-TIPS) to promote the crystallization of polymer chains into nanocapsular structures of controlled size and shell thickness. This is accomplished by performing a quench step of a low-concentrated PLLA-dioxane-water solution included in emulsions of mean droplet size <500 nm acting as nanodomains. The control of nanoconfinement conditions enables not only the production of nanocapsules with a minimum mean particle diameter of 70 nm but also the tunability of shell thickness and its crystallinity degree. The specific properties of the developed nanocapsular architectures have important implications on release mechanism and loading capability of hydrophilic and lipophilic payload compounds.
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Affiliation(s)
- Enza Torino
- Center for Advanced Biomaterials for Health Care @CRIB - Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci n. 53, 80125, Napoli, Italy
- University of Naples Federico II, Interdisciplinary Research Center of Biomaterials, CRIB P.le Tecchio 80, 80125, Naples, Italy
| | - Rosaria Aruta
- Center for Advanced Biomaterials for Health Care @CRIB - Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci n. 53, 80125, Napoli, Italy
- University of Naples Federico II, Department of Chemical, Materials and Industrial Production Engineering, P.le Tecchio 80, 80125, Naples, Italy
| | - Teresa Sibillano
- CNR - IC Istituto di Cristallografia, via Amendola 122/O, 70126 Bari-Italia
| | - Cinzia Giannini
- CNR - IC Istituto di Cristallografia, via Amendola 122/O, 70126 Bari-Italia
| | - Paolo A. Netti
- Center for Advanced Biomaterials for Health Care @CRIB - Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci n. 53, 80125, Napoli, Italy
- University of Naples Federico II, Interdisciplinary Research Center of Biomaterials, CRIB P.le Tecchio 80, 80125, Naples, Italy
- University of Naples Federico II, Department of Chemical, Materials and Industrial Production Engineering, P.le Tecchio 80, 80125, Naples, Italy
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11
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Hsieh FY, Lin HH, Hsu SH. 3D bioprinting of neural stem cell-laden thermoresponsive biodegradable polyurethane hydrogel and potential in central nervous system repair. Biomaterials 2015; 71:48-57. [DOI: 10.1016/j.biomaterials.2015.08.028] [Citation(s) in RCA: 246] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 08/13/2015] [Accepted: 08/14/2015] [Indexed: 01/14/2023]
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12
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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] [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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13
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Oleszko N, Wałach W, Utrata-Wesołek A, Kowalczuk A, Trzebicka B, Klama-Baryła A, Hoff-Lenczewska D, Kawecki M, Lesiak M, Sieroń AL, Dworak A. Controlling the Crystallinity of Thermoresponsive Poly(2-oxazoline)-Based Nanolayers to Cell Adhesion and Detachment. Biomacromolecules 2015; 16:2805-13. [PMID: 26226320 DOI: 10.1021/acs.biomac.5b00745] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Semicrystalline, thermoresponsive poly(2-isopropyl-2-oxazoline) (PIPOx) layers covalently bonded to glass or silica wafers were obtained via the surface-termination of the living polymer chains. Polymer solutions in acetonitrile were exposed to 50 °C for various time periods and were poured onto the functionalized solid wafers. Fibrillar crystallites formed in polymerization solutions settled down onto the wafers next to the amorphous polymer. The amount of crystallites adsorbed on thermoresponsive polymer layers depended on the annealing time of the PIPOx solution. The wettability of PIPOx layers decreased with the increasing amount of crystallites. The higher content of crystallites weakened the temperature response of the layer, as evidenced by the philicity and thickness measurements. Semicrystalline thermoresponsive PIPOx layers were used as biomaterials for human dermal fibroblasts (HDFs) culture and detachment. The presence of crystallites on the PIPOx layers promoted the proliferation of HDFs. Changes in the physicochemical properties of the layer, caused by the temperature response of the polymer, led to the change in the cells shape from a spindle-like to an ellipsoidal shape, which resulted in their detachment. A supporting membrane was used to assist the detachment of the cells from PIPOx biosurfaces and to prevent the rolling of the sheet.
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Affiliation(s)
- Natalia Oleszko
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie -Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Wojciech Wałach
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie -Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Alicja Utrata-Wesołek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie -Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Agnieszka Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie -Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie -Sklodowskiej 34, 41-819 Zabrze, Poland
| | | | | | - Marek Kawecki
- Center for Burn Treatment, Jana Pawla II, 41-100 Siemianowice Slaskie, Poland
| | - Marta Lesiak
- Department of General, Molecular Biology and Genetics, Medical University of Silesia , Medykow 18, 40-752 Katowice, Poland
| | - Aleksander L Sieroń
- Department of General, Molecular Biology and Genetics, Medical University of Silesia , Medykow 18, 40-752 Katowice, Poland
| | - Andrzej Dworak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie -Sklodowskiej 34, 41-819 Zabrze, Poland
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14
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Matsuno H, Matsuyama R, Yamamoto A, Tanaka K. Enhanced cellular affinity for poly(lactic acid) surfaces modified with titanium oxide. Polym J 2015. [DOI: 10.1038/pj.2015.30] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Azari P, Yahya R, Wong CS, Gan SN. Improved processability of electrospun poly[(R)-3-hydroxybutyric acid] through blending with medium-chain length poly(3-hydroxyalkanoates) produced byPseudomonas putidafrom oleic acid. ACTA ACUST UNITED AC 2014. [DOI: 10.1179/1432891714z.0000000001024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- P. Azari
- Department of ChemistryFaculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - R. Yahya
- Department of ChemistryFaculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - C. S. Wong
- Plasma Technology Research CenterPhysics Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - S. N. Gan
- Department of ChemistryFaculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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16
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Kolbuk D, Guimond-Lischer S, Sajkiewicz P, Maniura-Weber K, Fortunato G. The Effect of Selected Electrospinning Parameters on Molecular Structure of Polycaprolactone Nanofibers. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2014.945209] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Guarino V, Cirillo V, Altobelli R, Ambrosio L. Polymer-based platforms by electric field-assisted techniques for tissue engineering and cancer therapy. Expert Rev Med Devices 2014; 12:113-29. [DOI: 10.1586/17434440.2014.953058] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Ortiz R, Moreno-Flores S, Quintana I, Vivanco M, Sarasua J, Toca-Herrera J. Ultra-fast laser microprocessing of medical polymers for cell engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 37:241-50. [DOI: 10.1016/j.msec.2013.12.039] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 12/11/2013] [Accepted: 12/27/2013] [Indexed: 01/20/2023]
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Cytocompatibility of Siloxane-Containing Vaterite/Poly(l-lactic acid) Composite Coatings on Metallic Magnesium. MATERIALS 2013; 6:5857-5869. [PMID: 28788425 PMCID: PMC5452738 DOI: 10.3390/ma6125857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 11/27/2013] [Accepted: 12/10/2013] [Indexed: 11/17/2022]
Abstract
Poly(l-lactic acid)-based films which include 60 wt % of vaterite (V) or siloxane-containing vaterite (SiV) were coated on a pure magnesium substrate, denoted by PLLA/V or PLLA/SiV, respectively, to suppress early corrosion and improve its cytocompatibility. Both coating films adhered to the Mg substrate with 2.3–2.8 MPa of tensile bonding strength. Soaking test for 7 days in α-modified minimum essential medium revealed that the morphological instability of the PLLA/V film caused a higher amount of Mg2+ ion to be released from the coating sample. On the other hand, in the case of the coating with the PLLA/SiV film, no morphological change even after the soaking test was observed, owing to the suppression of the degradation rate. In cell culture tests, the proliferation of mouse osteoblast-like cell (MC3T3-E1) was significantly enhanced by both coatings, in comparison with the uncoated magnesium substrate. The cell morphology revealed that a few less-spread cells were observed on the PLLA/V film, while more elongated cells were done on the PLLA/SiV film. The cells on the PLLA/SiV film exhibited an extremely higher alkaline phosphatase activity after 21 days of incubation than that on the PLLA/V one. The PLLA/SiV film suppressed the early corrosion and enhanced cytocompatibility on metallic magnesium.
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Barbieri D, Yuan H, Luo X, Farè S, Grijpma DW, de Bruijn JD. Influence of polymer molecular weight in osteoinductive composites for bone tissue regeneration. Acta Biomater 2013; 9:9401-13. [PMID: 23917043 DOI: 10.1016/j.actbio.2013.07.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 07/12/2013] [Accepted: 07/23/2013] [Indexed: 10/26/2022]
Abstract
In bone tissue regeneration, certain polymer and calcium-phosphate-based composites have been reported to enhance some biological surface phenomena, facilitating osteoinduction. Although the crucial role of inorganic fillers in heterotopic bone formation by such materials has been shown, no reports have been published on the potential effects the polymer phase may have. The present work starts from the assumption that the polymer molecular weight regulates the fluid uptake, which determines the hydrolysis rate and the occurrence of biological surface processes. Here, two composites were prepared by extruding two different molecular weight L/D,L-lactide copolymers with calcium phosphate apatite. The lower molecular weight copolymer allowed larger fluid uptake in the composite thereof, which was correlated with a higher capacity to adsorb proteins in vitro. Further, the large fluid absorption led to a quicker composite degradation that generated rougher surfaces and enhanced ion release. Following intramuscular implantation in sheep, only the composite with the lower molecular weight polymer could induce heterotopic bone formation. Besides influencing the biological potential of composites, the molecular weight also regulated their viscoelastic behaviour under cyclic stresses. The results lead to the conclusion that designing biomaterials with appropriate physico-chemical characteristics is crucial for bone tissue regeneration in mechanical load-bearing sites.
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Low YKA, Zou X, Fang YM, Wang JL, Lin WS, Boey FYC, Ng KW. β-Phase poly(vinylidene fluoride) films encouraged more homogeneous cell distribution and more significant deposition of fibronectin towards the cell-material interface compared to α-phase poly(vinylidene fluoride) films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 34:345-53. [PMID: 24268268 DOI: 10.1016/j.msec.2013.09.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 07/19/2013] [Accepted: 09/21/2013] [Indexed: 11/26/2022]
Abstract
The piezoelectric response from β-phase poly(vinylidene fluoride) (PVDF) can potentially be exploited for biomedical application. We hypothesized that α and β-phase PVDF exert direct but different influence on cellular behavior. α- and β-phase PVDF films were synthesized through solution casting and characterized with FT-IR, XRD, AFM and PFM to ensure successful fabrication of α and β-phase PVDF films. Cellular evaluation with L929 mouse fibroblasts over one-week was conducted with AlamarBlue® metabolic assay and PicoGreen® proliferation assay. Immunostaining of fibronectin investigated the extent and distribution of extracellular matrix deposition. Image saliency analysis quantified differences in cellular distribution on the PVDF films. Our results showed that β-phase PVDF films with the largest area expressing piezoelectric effect elicited highest cell metabolic activity at day 3 of culture. Increased fibronectin adsorption towards the cell-material interface was shown on β-phase PVDF films. Image saliency analysis showed that fibroblasts on β-phase PVDF films were more homogeneously distributed than on α-phase PVDF films. Taken collectively, the different molecular packing of α and β-phase PVDF resulted in differing physical properties of films, which in turn induced differences in cellular behaviors. Further analysis of how α and β-phase PVDF may evoke specific cellular behavior to suit particular application will be intriguing.
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Affiliation(s)
- Y K A Low
- School of Materials Science and Engineering, Nanyang Technological University, N4.1 50 Nanyang Avenue, Singapore 639798, Singapore
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Yang J, Liang Y, Shi W, Lee HS, Han CC. Effects of surface wetting induced segregation on crystallization behaviors of melt-miscible poly(l-lactide)-block-poly(ethylene glycol) copolymer thin film. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.05.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kim TH, Oh SH, Kwon EB, Lee JY, Lee JH. In vitro evaluation of osteogenesis and myogenesis from adipose-derived stem cells in a pore size gradient scaffold. Macromol Res 2013. [DOI: 10.1007/s13233-013-1099-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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24
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Scislowska-Czarnecka A, Pamula E, Kolaczkowska E. Biocompatibility evaluation of glycolide-containing polyesters in contact with osteoblasts and fibroblasts. J Appl Polym Sci 2013. [DOI: 10.1002/app.37762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Antoniac I, Laptoiu D, Popescu D, Cotrut C, Parpala R. Development of Bioabsorbable Interference Screws: How Biomaterials Composition and Clinical and Retrieval Studies Influence the Innovative Screw Design and Manufacturing Processes. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2013. [DOI: 10.1007/978-1-4614-4328-5_6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Gualandi C, Govoni M, Foroni L, Valente S, Bianchi M, Giordano E, Pasquinelli G, Biscarini F, Focarete ML. Ethanol disinfection affects physical properties and cell response of electrospun poly(l-lactic acid) scaffolds. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.09.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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27
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Polymeric scaffolds based on blends of poly-l-lactic acid (PLLA) with poly-d-l-lactic acid (PLA) prepared via thermally induced phase separation (TIPS): demixing conditions and morphology. Polym Bull (Berl) 2012. [DOI: 10.1007/s00289-012-0861-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang K, Jesse S, Wang S. Banded Spherulitic Morphology in Blends of Poly (propylene fumarate) and Poly(ϵ
-caprolactone) and Interaction with MC3T3-E1 Cells. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Krasteva N, Seifert B, Hopp M, Malsch G, Albrecht W, Altankov G, Groth T. Membranes for biohybrid liver support: the behaviour of C3A hepatoblastoma cells is dependent on the composition of acrylonitrile copolymers. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 16:1-22. [PMID: 15796302 DOI: 10.1163/1568562052843348] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Co-polymers based on acrylonitrile, N-vinylpyrrolidone, aminoethylmethacrylate and sodium methallylsulfonate were used to prepare flat membranes by phase inversion. The surface properties of membranes were characterised by water contact angle measurements, atomic force microscopy and X-ray photoelectron spectroscopy (XPS). Membrane permeability was estimated by porosity measurements with water as test liquid. Human C3A hepatoblastoma cells were plated on these materials. Cell-material interaction was characterised by overall cell morphology, formation of focal adhesion contacts and intercellular junctions. Furthermore, cell proliferation was measured and compared with the functional activity of cells as indicated by 7-ethoxycoumarin-O-deethylation. More hydrophilic materials reduced spreading of cells, formation of focal adhesion and subsequent proliferation while homotypic cell adhesion was facilitated in correlation with stronger expressions of intercellular junctions and improved functional activity. In contrast, membranes with stronger adhesivity enhanced cell proliferation but reduced the functional activity of cells. It was concluded that the co-polymerisation of acrylonitrile with hydrophilic co-monomers, such as N-vinylpyrrolidone, could be used to tailor membrane materials for the application in biohybrid liver support systems.
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Affiliation(s)
- N Krasteva
- Institute of Biophysics, Bulgarian Academy of Sciences, Str. Acad. G. Bonchev, bl. 21, BG-1113 Sofia, Bulgaria
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Wang K, Cai L, Jesse S, Wang S. Poly(ε-caprolactone)-banded spherulites and interaction with MC3T3-E1 cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4382-4395. [PMID: 22313450 DOI: 10.1021/la205162d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report that protein adsorption, cell attachment, and cell proliferation were enhanced on spherulites-roughened polymer surfaces. Banded spherulites with concentric alternating succession of ridges and valleys were observed on spin-coated thin films of poly(ε-caprolactone) (PCL) and two series of PCL binary homoblends composed of high- and low-molecular-weight components when they were isothermally crystallized at 25-52 °C. Their thermal properties, crystallization kinetics, and surface morphology were examined. The melting temperature (T(m)), crystallinity (χ(c)), crystallization rate, and spherulitic patterns showed strong dependence on the crystallization temperature (T(c)) and the blend composition. The surface roughness of the spherulites was higher when T(c) was higher; thus, the larger surface area formed in banded spherulites could adsorb more serum proteins from cell culture media. In vitro mouse preosteoblastic MC3T3-E1 cell attachment, proliferation, and nuclear localization were assessed on the hot-compressed flat disks and spherulites-roughened films of the high-molecular-weight PCL and one of its homoblends. The number of attached MC3T3-E1 cells and the proliferation rate were greater on the rougher surfaces than those on the flat ones. It is interesting to note that cell nuclei were preferentially, though not absolutely, located in or close to the valleys of the banded spherulites. The percentage of cell nuclei in the valleys was higher than 78% when the ridge height and adjacent ridge distance were ~350 and ~35 nm, respectively. This preference was weaker when the ridge height was lower or at a higher cell density. These results suggest that isothermal crystallization of semicrystalline polymers can be an effective thermal treatment method to achieve controllable surface roughness and pattern for regulating cell behaviors in tissue-engineering applications.
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Affiliation(s)
- Kan Wang
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
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31
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Guarino V, Cirillo V, Taddei P, Alvarez-Perez MA, Ambrosio L. Tuning size scale and crystallinity of PCL electrospun fibres via solvent permittivity to address hMSC response. Macromol Biosci 2011; 11:1694-705. [PMID: 22052674 DOI: 10.1002/mabi.201100204] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 09/09/2011] [Indexed: 11/06/2022]
Abstract
The effect of solvent permittivity on the fibre morphology of PCL electrospun membranes for tissue engineering applications is studied. Morphological results indicate that polar solvents with higher permittivity are able to promote the formation of sub-micrometric fibres, while apolar solvents yield microfibres with an average fibre diameter of 2.86 ± 0.31 µm. Polymer/solvent interactions and electrospinning process parameters influence the mechanism of fibre and bead formation. It is shown that the dielectric properties of solvents influence the fibre size scale and crystallinity and directly contribute to the biological response of stem cells. Solvent permittivity is a key factor in controlling the morphological and physical properties of electrospun fibre meshes.
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Affiliation(s)
- Vincenzo Guarino
- Institute of Composite and Biomedical Materials, National Research Council of Italy, P.le Tecchio 80, 80125 Naples, Italy.
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Sarasua JR, López-Rodríguez N, Zuza E, Petisco S, Castro B, del Olmo M, Palomares T, Alonso-Varona A. Crystallinity assessment and in vitro cytotoxicity of polylactide scaffolds for biomedical applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:2513-2523. [PMID: 21858721 DOI: 10.1007/s10856-011-4425-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2010] [Accepted: 08/11/2011] [Indexed: 05/31/2023]
Abstract
Bioresorbable polylactides are one of the most important materials for tissue engineering applications. In this work we have prepared scaffolds based on the two optically pure stereoisomers: poly(L: -lactide) (PLLA) and poly(D: -lactide) (PDLA). The crystalline structure and morphology were evaluated by DSC, AFM and X-ray diffraction. PLLA and PDLA crystallized in the α form and the equimolar PLLA/PDLA blend, crystallized in the stereocomplex form, were analyzed by a proliferation assay in contact with mouse L-929 and human fibroblasts and neonatal keratinocytes for in vitro cytotoxicity evaluation. SEM analysis was conducted to determine the cell morphology, spreading and adhesion when in contact with the different polymer surfaces. The preserved proliferation rate showed in MTT tests and the high colonization on the surface of polylactides observed by SEM denote that PLLA, PDLA and the equimolar PLLA/PDLA are useful biodegradable materials in which the crystalline characteristics can be tuned for specific biomedical applications.
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Affiliation(s)
- J R Sarasua
- Department of Mining-Metallurgy and Materials Science, School of Engineering, University of the Basque Country (UPV/EHU), 48013 Bilbao, Spain.
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33
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Yamada I, Khoury J. Cluster Ion Beam Processing: Review of Current and Prospective Applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/opl.2011.1081] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTCluster ion beam processes which employ ions comprised of a few hundred to several thousand atoms are being developed into a new field of ion beam technology. The processes are characterized by low energy surface interaction effects, lateral sputtering phenomena and high-rate chemical reaction effects. This paper reviews the current status of studies of the fundamental cluster ion beam characteristics as they apply to nanoscale processing and present industrial applications. As new prospective applications, techniques are now being developed to employ cluster ions in surface analysis tools such as XPS and SIMS and to modify surfaces of bio-materials. Results related to these new projects will also be reviewed.
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Simon CG, Lin-Gibson S. Combinatorial and high-throughput screening of biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:369-387. [PMID: 20839249 DOI: 10.1002/adma.201001763] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Indexed: 05/29/2023]
Abstract
Combinatorial and high-throughput methods have been increasingly used to accelerate research and development of new biomaterials. These methods involve creating miniaturized libraries that contain many specimens in one sample in the form of gradients or arrays, followed by automated data collection and analysis. This article reviews recent advances in utilizing combinatorial and high-throughput methods to better understand cell-material interactions, particularly highlighting our efforts at the NIST Polymers Division. Specifically, fabrication techniques to generate controlled surfaces (2D) and 3D cell environments (tissue engineering scaffolds) as well as methods to characterize and analyze material properties and cell-material interactions are described. In conclusion, additional opportunities for combinatorial methods for biomaterials research are noted, including streamlined sample fabrication and characterization, appropriate and automated bioassays, and data analysis.
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Affiliation(s)
- Carl G Simon
- Polymers Division, National Institute of Standards and Technology, 100 Bureau Dr., Gaithersburg, MD 29899, USA
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Parabolic dependence of material properties and cell behavior on the composition of polymer networks via simultaneously controlling crosslinking density and crystallinity. Biomaterials 2010; 31:7423-34. [DOI: 10.1016/j.biomaterials.2010.06.028] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 06/22/2010] [Indexed: 11/23/2022]
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36
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Low YKA, Meenubharathi N, Niphadkar ND, Boey FYC, Ng KW. α- and β-poly(vinylidene fluoride) evoke different cellular behaviours. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2010; 22:1651-67. [PMID: 20699059 DOI: 10.1163/092050610x519471] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
α-Phase poly(vinylidene fluoride) (PVDF) has chains of zero dipole moments and is, therefore, nonpiezoelectric, while β-phase PVDF has the most significant piezoelectric properties among the polymorphs due to its polar chains. Although many reports describe PVDF as a suitable biomaterial due to its stability and biocompatibility, few considered the specific effects that the different polymorphs exert on cellular behaviour. We hypothesized that α- and β-phase PVDF will exert direct but different influences on cell attachment and metabolic activity. PVDF films were fabricated using N,N-dimethylformamide (DMF) and hexamethylphosphoramide (HMPA) by solvent casting. Samples were characterized by differential scanning calorimetry, Fourier transform infrared spectroscopy and X-ray diffraction. Films containing 83.5% α-phase PVDF (DMF-PVDFα) and 91.4% of β-phase PVDF (HMPA-PVDFβ within the crystalline regions were produced and used to evaluate in vitro attachment and metabolic activity of L929 cells. Cell metabolic activity on both PVDF conformations increased 3-fold over the 1-week culture period, with higher cell metabolic activity observed on DMF-PVDFα on day 5 of culture, compared to HMPA-PVDFβ. Cells grown on DMF-PVDFα were well-spread, flat and expressed spotted paxillin in focal adhesions that were mainly localized to perinuclear regions of the cells, while a high proportion of cells on HMPA-PVDFβ were bulging, round and expressed relatively fewer paxillin spots. Our results suggest that α-phase PVDF supports higher cell metabolic activity and better cell spreading compared to β-phase PVDF. Such variations can potentially be exploited for different biomedical applications.
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Affiliation(s)
- Y K A Low
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
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37
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Kapoor A, Caporali EH, Kenis PJ, Stewart MC. Microtopographically patterned surfaces promote the alignment of tenocytes and extracellular collagen. Acta Biomater 2010; 6:2580-9. [PMID: 20045087 DOI: 10.1016/j.actbio.2009.12.047] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2009] [Revised: 12/11/2009] [Accepted: 12/24/2009] [Indexed: 11/25/2022]
Abstract
This paper investigates the role of microtopographical features on the cytomorphology, alignment, proliferation and gene expression of tenocytes. We made use of simple microfabrication approaches to create surfaces patterned with topographical features suitable for in vitro studies of tenocytes. These surfaces were composed of glass substrates patterned with polymeric ridges spaced from 50 to 250 microm apart. Our studies demonstrate that the microgrooves differentially impact tenocyte shape, alignment and matrix organization along the direction of grooves. Groove widths significantly influenced cellular alignment, with 50 microm grooved patterns affecting alignment most substantially. Polarized light microscopy demonstrated that mature collagen fibers were denser and more oriented within 50 microm patterns. None of the patterns had a significant effect on the expression of genes linked to proliferation or extracellular matrix synthesis, although time in culture profoundly influenced both gene groups. COMP mRNA expression was moderately increased in tenocytes seeded onto 250 microm grooves, but there was no overall beneficial phenotypic effect of aligned growth. The results of this study indicate that microtopography affects cell density and alignment of tenocytes and leads to the deposition of an aligned collagen matrix, but does not significantly impact matrix gene expression or cell phenotype. These outcomes provide insights into the biology of tendon regeneration, thus providing guidance in the design of clinical procedures for tendon repair.
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Mechanical properties and biocompatibility of electrospun polylactide/poly(vinylidene fluoride) mats. JOURNAL OF POLYMER RESEARCH 2010. [DOI: 10.1007/s10965-010-9421-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Poly(ɛ-caprolactone) acrylates synthesized using a facile method for fabricating networks to achieve controllable physicochemical properties and tunable cell responses. POLYMER 2010. [DOI: 10.1016/j.polymer.2009.11.042] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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40
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Guidoin MF, Guidoin R, Frayssinet P, Legrand AP, How T. Poly-L-Lactide Surfaces Subjected to Long-Term Cell Cultures. Cell Proliferation and Polymer Degradation. ACTA ACUST UNITED AC 2009; 33:411-22. [PMID: 16317960 DOI: 10.1080/10731190500289909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Short term cell cultures are usually grown in contact with biomaterials to assess cytocompatibility. Depending on the rate of material degradation or corrosion, the time of culture can be a key-point in the method which, if too short, may not show any effect of the released material on the cells. A long term culture was therefore carried out with L929 fibroblast cells in contact with PLLA/PDLA samples for up to eight months. The degradation was measured in terms of shear-strength properties, intrinsic viscosity of the material and its cristallinity. The effect of the material on the cells was evaluated by measuring the growth rate of the cells. A significant decrease in the shear strength of the material was measured after three months. The rate of modification of the intrinsic viscosity was regular and decreased progressively throughout the culture period. Differential scanning calorimetry showed that the samples were initially essentially amorphous and that contact with the cell culture and its medium did not change its crystallinity level. The growth rate of the cells was not modified by the presence of the material when compared to the control. This study showed this material to be cytocompatible for a long period of time, even after detection of modifications of its physico-chemical properties.
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Affiliation(s)
- Marie-France Guidoin
- Quebec Biomaterials Institute, CHUQ, and Department of Surgery, Laval University, Quebec, Canada
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Wang S, Yaszemski MJ, Knight AM, Gruetzmacher JA, Windebank AJ, Lu L. Photo-crosslinked poly(epsilon-caprolactone fumarate) networks for guided peripheral nerve regeneration: material properties and preliminary biological evaluations. Acta Biomater 2009; 5:1531-42. [PMID: 19171506 DOI: 10.1016/j.actbio.2008.12.015] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Revised: 11/13/2008] [Accepted: 12/19/2008] [Indexed: 11/19/2022]
Abstract
In an effort to achieve suitable biomaterials for peripheral nerve regeneration, we present a material design strategy of combining a crystallite-based physical network and a crosslink-based chemical network. Biodegradable polymer disks and conduits have been fabricated by photo-crosslinking three poly(epsilon-caprolactone fumarate)s (PCLF530, PCLF1250, and PCLF2000), which were synthesized from the precursor poly(epsilon-caprolactone) (PCL) diols with nominal molecular weights of 530, 1250, and 2000 g mol(-1), respectively. Thermal properties such as glass transition temperature (T(g)), melting temperature (T(m)), and crystallinity of photo-crosslinked PCLFs were examined and correlated with their rheological and mechanical properties. Furthermore, in vitro degradation of uncrosslinked and crosslinked PCLFs in PBS crosslinked PCLFs in 1 N NaOH aqueous solution at 37 degrees C was studied. In vitro cytocompatibility, attachment, and proliferation of Schwann cell precursor line SPL201 cells on three PCLF networks were investigated. Crosslinked PCLF2000 with the highest crystallinity and mechanical properties was found to best support cell attachment and proliferation. Using a new photo-crosslinking method, single-lumen crosslinked PCLF nerve conduits without defects were fabricated in a glass mold. Crosslinked PCLF2000 nerve conduits were selected for evaluation in a 1cm gap rat sciatic nerve model. Histological evaluation demonstrated that the material was biocompatible with sufficient strength to hold sutures in place after 6 and 17 weeks of implantation. Nerve cable with myelinated axons was found in the crosslinked PCLF2000 nerve conduit.
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Affiliation(s)
- Shanfeng Wang
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA
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42
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Degirmenbasi N, Ozkan S, Kalyon DM, Yu X. Surface patterning of poly(L-lactide) upon melt processing:In vitroculturing of fibroblasts and osteoblasts on surfaces ranging from highly crystalline with spherulitic protrusions to amorphous with nanoscale indentations. J Biomed Mater Res A 2009; 88:94-104. [DOI: 10.1002/jbm.a.31874] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee SY, Tseng H, Ou KL, Yang JC, Ho KN, Lin CT, Huang HM. Residual Stress Patterns Affect Cell Distributions on Injection-Molded Poly-l-Lactide Substrate. Ann Biomed Eng 2008; 36:513-21. [DOI: 10.1007/s10439-008-9439-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2007] [Accepted: 01/10/2008] [Indexed: 01/27/2023]
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Maeda H, Kasuga T. Control of silicon species released from poly(lactic acid)-polysiloxane hybrid membranes. J Biomed Mater Res A 2008; 85:742-6. [PMID: 17896766 DOI: 10.1002/jbm.a.31506] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Novel hybrid membranes consisting of poly(L-lactic acid) (PLLA), aminopropyltriethoxysilane (APTES), and calcium carbonates were prepared for bioresorbable guided bone regeneration. A molecular chain of PLLA was bonded at the end of an organic chain in APTES through the amide bond formed between carboxy-groups in PLLA and amino-groups in ATPES. As a result, the hybrid membrane was formed. The PLLA in the membrane was an amorphous phase. By heating the membrane at 100 degrees C for 1 h, the PLLA in the membrane crystallized and some organic chains in APTES and amide bonds decomposed. Moreover, numerous pores of 0.5-1 microm in diameter were newly formed at the surface. When the membranes before and after heat treatment were soaked in simulated body fluid, the amount of silicon species in SBF released from the membrane after heat treatment was higher than that before heat treatment. A test of osteoblast-like cellular proliferation on the membrane showed that the membrane after heat treatment has much higher cell-proliferation ability than that before heat treatment.
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Affiliation(s)
- Hirotaka Maeda
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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Influence of Molecular Weight and Crystallinity of Poly(L-Lactic Acid) on the Adhesion and Proliferation of Human Osteoblast Like Cells. ACTA ACUST UNITED AC 2006. [DOI: 10.4028/www.scientific.net/msf.514-516.1020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The molecular weight and crystallinity of systems based on poly(L-lactic acid) PLLA is an important issue as it can influence, besides the general physical properties of the polymer, the patterns of cell adhesion, proliferation and cell morphology. The objective of the present study was to evaluate how crystallinity and molecular weight of PLLA influence the referred parameters. Four conditions were tested: low molecular weight amorphous and semi-crystalline PLLA disks, and
high molecular weight amorphous and semi-crystalline PLLA disks, obtained from hot press. The thermal properties of the studied materials were accessed by differential scanning calorimetry. For the cell culture studies a human osteosarcoma cell line (SaOS-2) was chosen. Disks were immersed in a cell suspension containing 5x104 cells/ml and kept in culture for periods up to two weeks. Cell
viability and proliferation of SaOS-2 cells was assessed by MTS test and a total protein assay, respectively. The adhesion and morphology of SaOS-2 cells on PLLA disks was assessed by scanning electronic microscopy. Results showed that cell viability was not affected by the different tested conditions. However, cell proliferation was increased in the high molecular weight amorphous samples and cells seemed to have higher adhesion patterns on semi-crystalline samples.
This is probably happening due to different rates of integrin interaction with the substrate leading to different patterns of focal adhesion points formation.
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Pan X, Julian T, Augsburger L. Quantitative measurement of indomethacin crystallinity in indomethacin-silica gel binary system using differential scanning calorimetry and X-ray powder diffractometry. AAPS PharmSciTech 2006; 7:E11. [PMID: 16584141 PMCID: PMC2750718 DOI: 10.1208/pt070111] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2005] [Accepted: 11/17/2005] [Indexed: 11/30/2022] Open
Abstract
Differential scanning calorimetry (DSC) and X-ray powder diffractometry (XRPD) methods were developed for the quantitative analysis of the crystallinity of indomethacin (IMC) in IMC and silica gel (SG) binary system. The DSC calibration curve exhibited better linearity than that of XRPD. No phase transformation occurred in the IMC-SG mixtures during DSC measurement. The major sources of error in DSC measurements were inhomogeneous mixing and sampling. Analyzing the amount of IMC in the mixtures using high-performance liquid chromatography (HPLC) could reduce the sampling error. DSC demonstrated greater sensitivity and had less variation in measurement than XRPD in quantifying crystalline IMC in the IMC-SG binary system.
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Affiliation(s)
- Xiaohong Pan
- School of Pharmacy, University of Maryland, 20 North Pine Street, Baltimore, MD 21201, USA.
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Simon CG, Eidelman N, Kennedy SB, Sehgal A, Khatri CA, Washburn NR. Combinatorial screening of cell proliferation on poly(l-lactic acid)/poly(d,l-lactic acid) blends. Biomaterials 2005; 26:6906-15. [PMID: 15939467 DOI: 10.1016/j.biomaterials.2005.04.050] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2005] [Accepted: 04/17/2005] [Indexed: 11/18/2022]
Abstract
We have combined automated fluorescence microscopy with a combinatorial approach for creating polymer blend gradients to yield a rapid screening method for characterizing cell proliferation on polymer blends. A gradient in polymer blend composition of poly(L-lactic acid) (PLLA) and poly(D,L-lactic acid) (PDLLA) was created in the form of a strip-shaped film and was annealed to allow PLLA to crystallize. Fourier transform infrared (FTIR) microspectroscopy was used to determine the composition in the gradients and atomic force microscopy was used to characterize surface topography. Osteoblasts were cultured on the gradients and proliferation was assessed by automated counting of cells using fluorescence microscopy. Surface roughness varied with composition, was smooth on PDLLA-rich regions and was rough on the PLLA-rich regions. Cell adhesion was similar on all regions of the gradients while proliferation was faster on the smooth, PDLLA-rich end of the gradients than on the rough, PLLA-rich end of the gradients. These results demonstrate the feasibility of a new, combinatorial approach for evaluating cell proliferation on polymer blends.
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Affiliation(s)
- Carl G Simon
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8545, USA
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Abramson SD, Alexe G, Hammer PL, Kohn J. A computational approach to predicting cell growth on polymeric biomaterials. J Biomed Mater Res A 2005; 73:116-24. [PMID: 15714501 DOI: 10.1002/jbm.a.30266] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A predictive model that can correlate the chemical composition of a biomaterial with the biological response of cells that are in contact with that biomaterial would represent a major advance and would facilitate the rational design of new biomaterials. As a first step toward this goal, we report here on the use of Logical Analysis of Data (LAD) to model the effect of selected polymer properties on the growth of two different cell types, rat lung fibroblasts (RLF, a transformed cell line), and normal foreskin fibroblasts (NFF, nontransformed human cells), on 112 surfaces obtained from a combinatorially designed library of polymers. LAD is a knowledge extraction methodology, based on using combinatorics, optimization, and Boolean logic. LAD was trained on a subset of 62 polymers and was then used to predict cell growth on 50 previously untested polymers. Experimental validation indicated that LAD correctly predicted the high and low cell growth polymers and found optimal ranges for polymer chemical composition, surface chemistry, and bulk properties. Particularly noteworthy is that LAD correctly identified high-performing polymer surfaces, which surpassed commercial tissue culture polystyrene as growth substratum for normal foreskin fibroblasts. Our results establish the feasibility of using computational modeling of cell growth on flat polymeric surfaces to identify promising "lead" polymers for applications that require either high or low cell growth.
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Affiliation(s)
- Sascha D Abramson
- Department of Chemistry and Chemical Biology, and the New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 09803, USA
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Jeong SI, Kim SH, Kim YH, Jung Y, Kwon JH, Kim BS, Lee YM. Manufacture of elastic biodegradable PLCL scaffolds for mechano-active vascular tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2005; 15:645-60. [PMID: 15264665 DOI: 10.1163/156856204323046906] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A soft and very elastic poly(lactide-co-epsilon-caprolactone) (PLCL)(50:50, Mn 185 x 10(3)) was synthesized. Tubular scaffolds were prepared by an extrusion-particulate leaching method for mechano-active vascular tissue engineering. The copolymer was very flexible but completely rubber-like elastic. Even the high porous PLCL scaffolds (90% salt wt) exhibited 200% elongation, but recovery over 85% in a tensile test. Moreover, the PLCL scaffolds maintained their high elasticity also in culture media under cyclic mechanical strain conditions. The highly porous scaffold (90% salt wt) withstood for an initial 1 week without any deformation and sustained for 2 weeks in culture media under cyclic stress of 10% amplitude and at 1 Hz frequency which are similar to the natural vascular conditions. Vascular smooth muscle cells (VSMCs) were seeded on to the PLCL scaffolds. The cell adhesion and proliferation on the scaffolds of various pore-size were increased with increasing pore size. For the pore sizes of 50-100 microm, 100-150 microm, 150-200 microm and 200-250 microm, the ratios of cell numbers were about 1:1.2:1.9:2.2, respectively, at both 12 h and 5 days. Similarly, the higher porous scaffolds exhibited more cell adhesion and proliferation compared to lower porous one, where the effect was more pronounced in the longer proliferation period. SMC-seeded scaffolds were implanted subcutaneously in athymic nude mice to confirm the biocompatibility. Such a high elastic property and proper biocompatibility to SMCs of PLCL scaffolds prepared in this study will be very useful to engineer SM-containing tissues such as blood vessels under mechanically dynamic environments (mechano-active tissue engineering).
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Affiliation(s)
- Sung In Jeong
- Biomaterials Research Center, Korea Institute of Science and Technology, P. O. Box 131, Cheongryang, Seoul 130-650, South Korea
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Di Toro R, Betti V, Spampinato S. Biocompatibility and integrin-mediated adhesion of human osteoblasts to poly(DL-lactide-co-glycolide) copolymers. Eur J Pharm Sci 2004; 21:161-9. [PMID: 14757487 DOI: 10.1016/j.ejps.2003.10.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The biocompatibility of polylactic acid (PLA) and polyglycolic acid (PGA) copolymers, employed in manufacturing bone-graft substitutes, is affected by their chemical composition, molecular weight and cell environment, and by the methods of polymerization and processing. Their in vitro bioactivity on human osteoblasts has been investigated very little. We first evaluated the behavior of primary human osteoblasts cultured in close contact with 75:25 and 50:50 PLA-PGA copolymers for 14 days adopting a cell culture system that allowed us to evaluate the influence of direct contact, and of factors released from polymers. The copolymers had no negative influence on cell morphology, cell viability and proliferation. Alkaline phosphatase (ALP) activity and osteocalcin production were also not affected. The initial adhesion of osteoblasts on implant surfaces requires the contribution of integrins, acting as a primary mechanism regulating cell-extracellular matrix (ECM) interactions. We observed that adhesion of osteoblasts to PLA-PGA copolymers, 2h after plating, was reduced by approximately 70% by antibodies capable to block integrin beta(1) and alpha(5)beta(1) complex and only by approximately 30% by an anti-integrin alpha(v) antibody. Therefore, beta(1) integrins may represent a predominant adhesion receptor subfamily utilized by osteoblasts to adhere to PLA-PGA copolymers. These materials do not show any negative influence on cell proliferation and differentiation.
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Affiliation(s)
- Rosanna Di Toro
- Department of Pharmacology, University of Bologna, Irnerio 48, 40126, Bologna, Italy.
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