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Geanaliu-Nicolae RE, Andronescu E. Blended Natural Support Materials-Collagen Based Hydrogels Used in Biomedicine. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5641. [PMID: 33321865 PMCID: PMC7764196 DOI: 10.3390/ma13245641] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/06/2020] [Accepted: 12/08/2020] [Indexed: 01/17/2023]
Abstract
Due to their unique properties-the are biocompatible, easily accessible, and inexpensive with programmable properties-biopolymers are used in pharmaceutical and biomedical research, as well as in cosmetics and food. Collagen is one of the most-used biomaterials in biomedicine, being the most abundant protein in animals with a triple helices structure, biocompatible, biomimetic, biodegradable, and hemostatic. Its disadvantages are its poor mechanical and thermal properties and enzymatic degradation. In order to solve this problem and to use its benefits, collagen can be used blended with other biomaterials such as alginate, chitosan, and cellulose. The purpose of this review article is to offer a brief paper with updated information on blended collagen-based formulations and their potential application in biomedicine.
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Affiliation(s)
- Ruxandra-Elena Geanaliu-Nicolae
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania;
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2
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Price JC, Krause AL, Waters SL, El Haj AJ. Predicting Bone Formation in Mesenchymal Stromal Cell-Seeded Hydrogels Using Experiment-Based Mathematical Modeling. Tissue Eng Part A 2020; 26:1014-1023. [PMID: 32178595 DOI: 10.1089/ten.tea.2020.0027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
In vitro bone formation by mesenchymal stromal cells encapsulated in type-1 collagen hydrogels is demonstrated after a 28-day in vitro culture period. Analysis of the hydrogels is carried out by X-ray microcomputed tomography, histology, and immunohistochemistry, which collectively demonstrates that bone formation in the hydrogels was quantifiably proportional to the initial collagen concentration, and subsequently the population density of seeded cells. This was established by varying the initial collagen concentration at a constant cell seeding density (3 × 105 cells/0.3 mL hydrogel), and separately varying cell seeding density at a constant collagen concentration (1 mg/mL). Using these data, a mathematical model is presented for the total hydrogel volume and mineralization volume based on the observed linear contraction dynamics of cell-seeded collagen gels. The model parameters are fitted by comparing the predictions of the mathematical model for the hydrogel and mineralized volumes on day 28 with the experimental data. The model is then used to predict the hydrogel and mineralization volumes for a range of hydrogel collagen concentrations and cell seeding densities, providing comprehensive input/output descriptors for generating mineralized hydrogels for bone tissue engineering. It is proposed that this quantitative approach will be a useful tool for generating in vitro manufactured bone tissue, defining input parameters that yield predictable output measures of tissue maturation. Impact statement This article describes a simple yet powerful quantitative description of in vitro tissue-engineered bone by combining experimental data with mathematical modeling. The overall aim of the article is to examine what is currently known about cell-mediated collagen contraction, and demonstrate that this phenomenon can be exploited to tailor bone formation by choosing a specific set of input parameters in the form of cell seeding density and collagen hydrogel concentration. Our study utilizes a clinically relevant cell source (human mesenchymal stem cells) with a biomaterial that has received regulatory approval for use in humans (collagen type 1), and hence could be useful for clinical applications, as well as furthering our understanding of cell/extracellular matrix interactions in determining in vitro bone tissue formation.
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Affiliation(s)
- Joshua C Price
- Institute for Science and Technology in Medicine, Guy Hilton Research Centre, Keele University, Stoke-on-Trent, United Kingdom
- Optics and Photonics Research Group, Faculty of Engineering, The University of Nottingham, Nottingham, United Kingdom
| | - Andrew L Krause
- Mathematical Institute, University of Oxford, Oxford, United Kingdom
| | - Sarah L Waters
- Mathematical Institute, University of Oxford, Oxford, United Kingdom
| | - Alicia J El Haj
- Institute for Science and Technology in Medicine, Guy Hilton Research Centre, Keele University, Stoke-on-Trent, United Kingdom
- Healthcare Technology Institute, Institute of Translational Medicine, University of Birmingham, Birmingham, United Kingdom
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3
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Stepanova M, Averianov I, Serdobintsev M, Gofman I, Blum N, Semenova N, Nashchekina Y, Vinogradova T, Korzhikov-Vlakh V, Karttunen M, Korzhikova-Vlakh E. PGlu-Modified Nanocrystalline Cellulose Improves Mechanical Properties, Biocompatibility, and Mineralization of Polyester-Based Composites. MATERIALS 2019; 12:ma12203435. [PMID: 31640122 PMCID: PMC6829302 DOI: 10.3390/ma12203435] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 01/09/2023]
Abstract
The development of biocompatible composite materials is in high demand in many fields such as biomedicine, bioengineering, and biotechnology. In this study, two series of poly (D,L-lactide) and poly (ε-caprolactone)-based films filled with neat and modified with poly (glutamic acid) (PGlu) nanocrystalline cellulose (NCC) were prepared. An analysis of scanning electron and atomic force microscopies' results shows that the modification of NCC with poly (glutamic acid) favored the better distribution of the nanofiller in the polymer matrix. Investigating the ability of the developed materials to attract and retain calcium ions led to the conclusion that composites containing NCC modified with PGlu induced better mineralization from model solutions than composites containing neat NCC. Moreover, compared to unmodified NCC, functionalization with PGlu improved the mechanical properties of composite films. The subcutaneous implantation of these composite materials into the backs of rats and the further histological investigation of neighboring tissues revealed the better biocompatibility of polyester materials filled with NCC-PGlu.
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Affiliation(s)
- Mariia Stepanova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
| | - Ilia Averianov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
| | - Mikhail Serdobintsev
- St. Petersburg Research Institute of Phtysiopulmonology, St. Petersburg 194064, Russia.
| | - Iosif Gofman
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
| | - Natalya Blum
- Interregional Laboratory Center, St. Petersburg 192283, Russia.
| | | | - Yuliya Nashchekina
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia.
| | - Tatiana Vinogradova
- St. Petersburg Research Institute of Phtysiopulmonology, St. Petersburg 194064, Russia.
| | - Viktor Korzhikov-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
- Institute of Chemistry, Saint-Petersburg State University, St. Petersburg 199034, Russia.
| | - Mikko Karttunen
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
- Department of Applied Mathematics, The University of Western Ontario, 1151 Richmond str., London, ON N5A 5B7, Canada.
- The Centre for Advanced Materials and Biomaterials Research, The University of Western Ontario, 1151 Richmond str., London, ON N6A 3K7, Canada.
- Department of Chemistry, The University of Western Ontario, 1151 Richmond str., London, ON N6A 3K7, Canada.
| | - Evgenia Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
- Institute of Chemistry, Saint-Petersburg State University, St. Petersburg 199034, Russia.
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4
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Cao M, Zhou Y, Mao J, Wei P, Chen D, Wang R, Cai Q, Yang X. Promoting osteogenic differentiation of BMSCs via mineralization of polylactide/gelatin composite fibers in cell culture medium. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:862-873. [PMID: 30948124 DOI: 10.1016/j.msec.2019.02.079] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 07/16/2018] [Accepted: 02/20/2019] [Indexed: 12/31/2022]
Abstract
Mineralization capability is an important issue in developing bone repairing biomaterials, while it is not quite clear how this feature would act in the presence of cells and influence cell osteogenic differentiation without adding extra osteoinductive factors such as β‑sodium glycerophosphate and dexamethasone. Poly(l‑lactide) (PLLA) and gelatin composite fibers (PG, 1:1 in weight) were electrospun, treated with CaCl2 solution (PG-Ca), and used for mineralization studies by using cell culture media (αMEM, and αMEM + serum). Bone mesenchymal stromal cells (BMSCs) were then seeded and cultured on both PG and PG-Ca fibrous mats for 28 days by only using αMEM + serum. Interestingly, mineral depositions on both PG and PG-Ca fibers were detected in the environment of αMEM or αMEM + serum, in which, PG-Ca fibers demonstrated stronger ability in inducing hydroxyapatite formation than PG fibers, especially in the presence of fetal bovine serum. When BMSCs were cultured on the two kinds of fibrous mats, apatite depositions were still clearly detected, while the depositing amounts decreased in comparison with corresponding cell-free cases. It was ascribed to the consumption of ions by the continuously proliferating BMSCs, whose osteogenic differentiation was significantly promoted even without extra osteoinductive factors, especially on PG-Ca fibrous mats, in comparison with the control group. Therefore, it was confirmed the capability of scaffolding materials in enriching ions like calcium and phosphate around cells was an efficient way to promote bone regeneration.
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Affiliation(s)
- Man Cao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yan Zhou
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Jianping Mao
- Department of Spine Surgery, Beijing Jishuitan Hospital, Beijing 100035, PR China
| | - Pengfei Wei
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing 100035, PR China
| | - Renxian Wang
- Laboratory of Bone Tissue Engineering, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing 100035, PR China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
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5
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Shin K, Acri T, Geary S, Salem AK. Biomimetic Mineralization of Biomaterials Using Simulated Body Fluids for Bone Tissue Engineering and Regenerative Medicine<sup/>. Tissue Eng Part A 2017; 23:1169-1180. [PMID: 28463603 DOI: 10.1089/ten.tea.2016.0556] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Development of synthetic biomaterials imbued with inorganic and organic characteristics of natural bone that are capable of promoting effective bone tissue regeneration is an ongoing goal of regenerative medicine. Calcium phosphate (CaP) has been predominantly utilized to mimic the inorganic components of bone, such as calcium hydroxyapatite, due to its intrinsic bioactivity and osteoconductivity. CaP-based materials can be further engineered to promote osteoinductivity through the incorporation of osteogenic biomolecules. In this study, we briefly describe the microstructure and the process of natural bone mineralization and introduce various methods for coating CaP onto biomaterial surfaces. In particular, we summarize the advantages and current progress of biomimetic surface-mineralizing processes using simulated body fluids for coating bone-like carbonated apatite onto various material surfaces such as metals, ceramics, and polymers. The osteoinductive effects of integrating biomolecules such as proteins, growth factors, and genes into the mineral coatings are also discussed.
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Affiliation(s)
- Kyungsup Shin
- 1 Department of Orthodontics, College of Dentistry and Dental Clinics, University of Iowa , Iowa City, Iowa
| | - Timothy Acri
- 2 Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa , Iowa City, Iowa
| | - Sean Geary
- 2 Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa , Iowa City, Iowa
| | - Aliasger K Salem
- 2 Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa , Iowa City, Iowa
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6
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Zhang C, Cao M, Lan J, Wei P, Cai Q, Yang X. Regulating proliferation and differentiation of osteoblasts on poly(l-lactide)/gelatin composite nanofibers via timed biomineralization. J Biomed Mater Res A 2016; 104:1968-80. [DOI: 10.1002/jbm.a.35728] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 03/17/2016] [Accepted: 03/24/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Caijin Zhang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Man Cao
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Jinle Lan
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Pengfei Wei
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
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7
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TOMOAIA GHEORGHE, PASCA ROXANADIANA. On the Collagen Mineralization. A Review. CLUJUL MEDICAL (1957) 2015; 88:15-22. [PMID: 26528042 PMCID: PMC4508610 DOI: 10.15386/cjmed-359] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 12/17/2014] [Indexed: 01/19/2023]
Abstract
Collagen mineralization (CM) is a challenging process that has received a lot of attention in the past years. Among the reasons for this interest, the key role is the importance of collagen and hydroxyapatite in natural bone, as major constituents. Different protocols of mineralization have been developed, specially using simulated body fluid (SBF) and many methods have been used to characterize the systems obtained, starting with methods of determining the mineral content (XRD, FTIR, Raman, High-Resolution Spectral Ultrasound Imaging), continuing with imaging methods (AFM, TEM, SEM, Fluorescence Microscopy), thermal analysis (DSC and TGA), evaluation of the mechanical and biological properties, including statistical methods and molecular modeling. In spite of the great number of studies regarding collagen mineralization, its mechanism, both in vivo and in vitro, is not completely understood. Some of the methods used in vitro and investigation methods are reviewed here.
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Affiliation(s)
- GHEORGHE TOMOAIA
- Orthopedic Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - ROXANA-DIANA PASCA
- Orthopedic Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
- Chemical Engineering Department, Babes-Bolyai University of Cluj-Napoca, Romania
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8
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Tas AC. The use of physiological solutions or media in calcium phosphate synthesis and processing. Acta Biomater 2014; 10:1771-92. [PMID: 24389317 DOI: 10.1016/j.actbio.2013.12.047] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 12/02/2013] [Accepted: 12/17/2013] [Indexed: 11/29/2022]
Abstract
This review examined the literature to spot uses, if any, of physiological solutions/media for the in situ synthesis of calcium phosphates (CaP) under processing conditions (i.e. temperature, pH, concentration of inorganic ions present in media) mimicking those prevalent in the human hard tissue environments. There happens to be a variety of aqueous solutions or media developed for different purposes; sometimes they have been named as physiological saline, isotonic solution, cell culture solution, metastable CaP solution, supersaturated calcification solution, simulated body fluid or even dialysate solution (for dialysis patients). Most of the time such solutions were not used as the aqueous medium to perform the biomimetic synthesis of calcium phosphates, and their use was usually limited to the in vitro testing of synthetic biomaterials. This review illustrates that only a limited number of research studies used physiological solutions or media such as Earle's balanced salt solution, Bachra et al. solutions or Tris-buffered simulated body fluid solution containing 27mM HCO3(-) for synthesizing CaP, and these studies have consistently reported the formation of X-ray-amorphous CaP nanopowders instead of Ap-CaP or stoichiometric hydroxyapatite (HA, Ca10(PO4)6(OH)2) at 37°C and pH 7.4. By relying on the published articles, this review highlights the significance of the use of aqueous solutions containing 0.8-1.5 mMMg(2+), 22-27mM HCO3(-), 142-145mM Na(+), 5-5.8mM K(+), 103-133mM Cl(-), 1.8-3.75mM Ca(2+), and 0.8-1.67mM HPO4(2-), which essentially mimic the composition and the overall ionic strength of the human extracellular fluid (ECF), in forming the nanospheres of X-ray-amorphous CaP.
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Affiliation(s)
- A Cuneyt Tas
- Department of Materials Science and Engineering, University of Illinois, Urbana, IL 61801, USA.
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9
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Li J, Baker BA, Mou X, Ren N, Qiu J, Boughton RI, Liu H. Biopolymer/Calcium phosphate scaffolds for bone tissue engineering. Adv Healthc Mater 2014; 3:469-84. [PMID: 24339420 DOI: 10.1002/adhm.201300562] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 11/15/2013] [Indexed: 11/08/2022]
Abstract
With nearly 30 years of progress, tissue engineering has shown promise in developing solutions for tissue repair and regeneration. Scaffolds, together with cells and growth factors, are key components of this development. Recently, an increasing number of studies have reported on the design and fabrication of scaffolding materials. In particular, inspired by the nature of bone, polymer/ceramic composite scaffolds have been studied extensively. The purpose of this paper is to review the recent progress of the naturally derived biopolymers and the methods applied to generate biomimetic biopolymer/calcium phosphate composites as well as their biomedical applications in bone tissue engineering.
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Affiliation(s)
- Jianhua Li
- State Key Lab of Crystal Materials, Shandong University; 27 Shandanan Road Jinan 250100 China
| | - Bryan. A. Baker
- Biosystems and Biomaterials Division, The National Institute of Standards and Technology; MD 20899-8300 USA
| | - Xiaoning Mou
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; Beijing China
| | - Na Ren
- State Key Lab of Crystal Materials, Shandong University; 27 Shandanan Road Jinan 250100 China
| | - Jichuan Qiu
- State Key Lab of Crystal Materials, Shandong University; 27 Shandanan Road Jinan 250100 China
| | - Robert I. Boughton
- Department of Physics and Astronomy; Bowling Green State University; Bowling Green OH 43403 USA
| | - Hong Liu
- State Key Lab of Crystal Materials, Shandong University; 27 Shandanan Road Jinan 250100 China
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; Beijing China
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10
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Janson IA, Kong YP, Putnam AJ. Nanotopographic substrates of poly (methyl methacrylate) do not strongly influence the osteogenic phenotype of mesenchymal stem cells in vitro. PLoS One 2014; 9:e90719. [PMID: 24594848 PMCID: PMC3940926 DOI: 10.1371/journal.pone.0090719] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 02/04/2014] [Indexed: 11/19/2022] Open
Abstract
The chemical, mechanical, and topographical features of the extracellular matrix (ECM) have all been documented to influence cell adhesion, gene expression, migration, proliferation, and differentiation. Topography plays a key role in the architecture and functionality of various tissues in vivo, thus raising the possibility that topographic cues can be instructive when incorporated into biomaterials for regenerative applications. In the literature, there are discrepancies regarding the potential roles of nanotopography to enhance the osteogenic phenotype of mesenchymal stem cells (MSC). In this study, we used thin film substrates of poly(methyl methacrylate) (PMMA) with nanoscale gratings to investigate the influence of nanotopography on the osteogenic phenotype of MSCs, focusing in particular on their ability to produce mineral similar to native bone. Topography influenced focal adhesion size and MSC alignment, and enhanced MSC proliferation after 14 days of culture. However, the osteogenic phenotype was minimally influenced by surface topography. Specifically, alkaline phosphatase (ALP) expression was not increased on nanotopographic films, nor was calcium deposition improved after 21 days in culture. Ca: P ratios were similar to native mouse bone on films with gratings of 415 nm width and 200 nm depth (G415) and 303 nm width and 190 nm depth (G303). Notably, all surfaces had Ca∶P ratios significantly lower than G415 films. Collectively, these data suggest that, PMMA films with nanogratings are poor drivers of an osteogenic phenotype.
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Affiliation(s)
- Isaac A. Janson
- Department of Material Science and Engineering, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Yen P. Kong
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Andrew J. Putnam
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, United States of America
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11
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Tas AC. Grade-1 titanium soaked in a DMEM solution at 37°C. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 36:84-94. [DOI: 10.1016/j.msec.2013.11.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 10/27/2013] [Accepted: 11/28/2013] [Indexed: 10/25/2022]
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12
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Koburger S, Bannerman A, Grover LM, Müller FA, Bowen J, Paxton JZ. A novel method for monitoring mineralisation in hydrogels at the engineered hard–soft tissue interface. Biomater Sci 2014; 2:41-51. [DOI: 10.1039/c3bm60102a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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13
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Abstract
PVDF membrane was modified by grafting cross-linked collagen after plasma treatment. The modified PVDF membrane has high OD value compared to original PVDF membrane, which means modified PVDF membrane has good hydrophilicity and biocompatibility.
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Affiliation(s)
- Lishun Wu
- Department of Chemistry and Chemical Engineering
- Heze University
- Heze, P.R. China
| | - Junfen Sun
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Material Science & Engineering
- Donghua University
- Shanghai 201620, P.R. China
| | - Faqin Tong
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Material Science & Engineering
- Donghua University
- Shanghai 201620, P.R. China
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14
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Naderi-Meshkin H, Andreas K, Matin MM, Sittinger M, Bidkhori HR, Ahmadiankia N, Bahrami AR, Ringe J. Chitosan-based injectable hydrogel as a promising in situ forming scaffold for cartilage tissue engineering. Cell Biol Int 2013; 38:72-84. [DOI: 10.1002/cbin.10181] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 08/11/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Hojjat Naderi-Meshkin
- Department of Biology; Ferdowsi University of Mashhad; Mashhad Iran
- Stem Cell and Regenerative Medicine Research Department; Iranian Academic Center for Education, Culture and Research (ACECR); Mashhad Branch Mashhad Iran
| | - Kristin Andreas
- Tissue Engineering Laboratory and Berlin-Brandenburg Center for Regenerative Therapies, Department of Rheumatology and Clinical Immunology; Charité-Universitätsmedizin Berlin; Charitéplatz 1 Berlin 10117 Germany
| | - Maryam M. Matin
- Department of Biology; Ferdowsi University of Mashhad; Mashhad Iran
- Cell and Molecular Biotechnology Research Group, Institute of Biotechnology; Ferdowsi University of Mashhad; Mashhad Iran
| | - Michael Sittinger
- Tissue Engineering Laboratory and Berlin-Brandenburg Center for Regenerative Therapies, Department of Rheumatology and Clinical Immunology; Charité-Universitätsmedizin Berlin; Charitéplatz 1 Berlin 10117 Germany
| | - Hamid Reza Bidkhori
- Stem Cell and Regenerative Medicine Research Department; Iranian Academic Center for Education, Culture and Research (ACECR); Mashhad Branch Mashhad Iran
| | | | - Ahmad Reza Bahrami
- Stem Cell and Regenerative Medicine Research Department; Iranian Academic Center for Education, Culture and Research (ACECR); Mashhad Branch Mashhad Iran
- Cell and Molecular Biotechnology Research Group, Institute of Biotechnology; Ferdowsi University of Mashhad; Mashhad Iran
| | - Jochen Ringe
- Tissue Engineering Laboratory and Berlin-Brandenburg Center for Regenerative Therapies, Department of Rheumatology and Clinical Immunology; Charité-Universitätsmedizin Berlin; Charitéplatz 1 Berlin 10117 Germany
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15
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Carrion B, Janson IA, Kong YP, Putnam AJ. A safe and efficient method to retrieve mesenchymal stem cells from three-dimensional fibrin gels. Tissue Eng Part C Methods 2013; 20:252-63. [PMID: 23808842 DOI: 10.1089/ten.tec.2013.0051] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Mesenchymal stem cells (MSCs) display multipotent characteristics that make them ideal for potential therapeutic applications. MSCs are typically cultured as monolayers on tissue culture plastic, but there is increasing evidence suggesting that they may lose their multipotency over time in vitro and eventually cease to retain any resemblance to in vivo resident MSCs. Three-dimensional (3D) culture systems that more closely recapitulate the physiological environment of MSCs and other cell types are increasingly explored for their capacity to support and maintain the cell phenotypes. In much of our own work, we have utilized fibrin, a natural protein-based material that serves as the provisional extracellular matrix during wound healing. Fibrin has proven to be useful in numerous tissue engineering applications and has been used clinically as a hemostatic material. Its rapid self-assembly driven by thrombin-mediated alteration of fibrinogen makes fibrin an attractive 3D substrate, in which cells can adhere, spread, proliferate, and undergo complex morphogenetic programs. However, there is a significant need for simple cost-effective methods to safely retrieve cells encapsulated within fibrin hydrogels to perform additional analyses or use the cells for therapy. Here, we present a safe and efficient protocol for the isolation of MSCs from 3D fibrin gels. The key ingredient of our successful extraction method is nattokinase, a serine protease of the subtilisin family that has a strong fibrinolytic activity. Our data show that MSCs recovered from 3D fibrin gels using nattokinase are not only viable but also retain their proliferative and multilineage potentials. Demonstrated for MSCs, this method can be readily adapted to retrieve any other cell type from 3D fibrin gel constructs for various applications, including expansion, bioassays, and in vivo implantation.
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Affiliation(s)
- Bita Carrion
- 1 Department of Biomedical Engineering, University of Michigan , Ann Arbor, Michigan
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Lee PF, Bai Y, Smith RL, Bayless KJ, Yeh AT. Angiogenic responses are enhanced in mechanically and microscopically characterized, microbial transglutaminase crosslinked collagen matrices with increased stiffness. Acta Biomater 2013; 9:7178-90. [PMID: 23571003 DOI: 10.1016/j.actbio.2013.04.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 03/12/2013] [Accepted: 04/01/2013] [Indexed: 01/25/2023]
Abstract
During angiogenesis, endothelial cells (ECs) use both soluble and insoluble cues to expand the existing vascular network to meet the changing trophic needs of the tissue. Fundamental to this expansion are physical interactions between ECs and extracellular matrix (ECM) that influence sprout migration, lumen formation and stabilization. These physical interactions suggest that ECM mechanical properties may influence sprouting ECs and, therefore, angiogenic responses. In a three-dimensional angiogenic model in which a monolayer of ECs is induced to invade an underlying collagen matrix, angiogenic responses were measured as a function of collagen matrix stiffness by inducing collagen crosslinking with microbial transglutaminase (mTG). By biaxial mechanical testing, stiffer collagen matrices were measured with both mTG treatment and incubation time. Using two-photon excited fluorescence (TPF) and second harmonic generation (SHG), it was shown that collagen TPF intensity increased with mTG treatment, and the TPF/SHG ratio correlated with biaxially tested mechanical stiffness. SHG and OCM were further used to show that other ECM physical properties such as porosity and pore size did not change with mTG treatment, thus verifying that matrix stiffness was tuned independently of matrix density. The results showed that stiffer matrices promote more angiogenic sprouts that invade deeper. No differences in lumen size were observed between control and mTG stiffened matrices, but greater remodeling was revealed in stiffer gels using SHG and OCM. The results of this study show that angiogenic responses are influenced by stiffness and suggest that ECM properties may be useful in regenerative medicine applications to engineer angiogenesis.
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Affiliation(s)
- P-F Lee
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
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Saito E, Suarez-Gonzalez D, Rao RR, Stegemann JP, Murphy WL, Hollister SJ. Use of micro-computed tomography to nondestructively characterize biomineral coatings on solid freeform fabricated poly (L-lactic acid) and poly ((ε-caprolactone) scaffolds in vitro and in vivo. Tissue Eng Part C Methods 2013; 19:507-17. [PMID: 23134479 DOI: 10.1089/ten.tec.2012.0495] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Biomineral coatings have been extensively used to enhance the osteoconductivity of polymeric scaffolds. Numerous porous scaffolds have previously been coated with a bone-like apatite mineral through incubation in simulated body fluid (SBF). However, characterization of the mineral layer formed on scaffolds, including the amount of mineral within the scaffolds, often requires destructive methods. We have developed a method using micro-computed tomography (μ-CT) scanning to nondestructively quantify the amount of mineral in vitro and in vivo on biodegradable scaffolds made of poly (L-lactic acid) (PLLA) and poly (ε-caprolactone) (PCL). PLLA and PCL scaffolds were fabricated using an indirect solid freeform fabrication (SFF) technique to achieve orthogonally interconnected pore architectures. Biomineral coatings were formed on the fabricated PLLA and PCL scaffolds after incubation in modified SBF (mSBF). Scanning electron microscopy and X-ray diffraction confirmed the formation of an apatite-like mineral. The scaffolds were implanted into mouse ectopic sites for 3 and 10 weeks. The presence of a biomineral coating within the porous scaffolds was confirmed through plastic embedding and μ-CT techniques. Tissue mineral content (TMC) and volume of mineral on the scaffold surfaces detected by μ-CT had a strong correlation with the amount of calcium measured by the orthocresolphthalein complex-one (OCPC) method before and after implantation. There was a strong correlation between OCPC pre- and postimplantation and μ-CT measured TMC (R(2)=0.96 preimplant; R(2)=0.90 postimplant) and mineral volume (R(2)=0.96 preimplant; R(2)=0.89 postimplant). The μ-CT technique showed increases in mineral following implantation, suggesting that μ-CT can be used to nondestructively determine the amount of calcium on coated scaffolds.
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Affiliation(s)
- Eiji Saito
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
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Gudur M, Rao RR, Hsiao YS, Peterson AW, Deng CX, Stegemann JP. Noninvasive, quantitative, spatiotemporal characterization of mineralization in three-dimensional collagen hydrogels using high-resolution spectral ultrasound imaging. Tissue Eng Part C Methods 2012; 18:935-46. [PMID: 22624791 DOI: 10.1089/ten.tec.2012.0180] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
As tissue engineering products move toward the clinic, nondestructive methods to monitor their development and ensure quality are needed. In this study, high-resolution spectral ultrasound imaging (SUSI) was used to noninvasively characterize mineral content in collagen hydrogels. SUSI was used to generate three-dimensional (3D) grayscale (GS) images of construct morphology with submillimeter resolution. Spectral analysis of the backscattered radio frequency (RF) ultrasound signals was used to determine the midband fit (MBF) and slope of the linearized RF spectrum. These parameters are operator and instrument independent, and were used to characterize the spatial distribution of mineral in constructs supplemented with hydroxyapatite particles. GS and MBF correlated closely with mineral content, while slope was not dependent on concentration. SUSI also was used to monitor mineralization of collagen constructs by immersion in simulated body fluid (SBF) over 21 days. The construct surface was mineralized before the interior, and there was a dose-dependent effect of SBF concentration on degree of mineralization and deposited particle size. MBF density was closely correlated with the amount of calcium deposited. These data demonstrate that SUSI has utility as a noninvasive imaging method for quantitative analysis of mineralization in 3D protein constructs. Such techniques may assist the development of engineered orthopedic tissues.
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Affiliation(s)
- Madhu Gudur
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
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