101
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Weng W, Wang Y. Partial characterization and primary structure of collagen subunits from golden pompano skins. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.03.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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102
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Liu A, Zhang Z, Hou H, Zhao X, Li B, Zhao T, Liu L. Characterization of Acid- and Pepsin-Soluble Collagens from the Cuticle of Perinereis nuntia (Savigny). FOOD BIOPHYS 2018. [DOI: 10.1007/s11483-018-9533-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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103
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Zhai Z, Wang H, Wei B, Yu P, Xu C, He L, Zhang J, Xu Y. Effect of Ionic Liquids on the Fibril-Formation and Gel Properties of Grass Carp (Ctenopharyngodon idellus) Skin Collagen. Macromol Res 2018. [DOI: 10.1007/s13233-018-6081-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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104
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Comparison of characteristics and fibril-forming ability of skin collagen from barramundi (Lates calcarifer) and tilapia (Oreochromis niloticus). Int J Biol Macromol 2018; 107:549-559. [DOI: 10.1016/j.ijbiomac.2017.09.022] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 08/29/2017] [Accepted: 09/10/2017] [Indexed: 11/24/2022]
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105
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Kalbitzer L, Pompe T. Fibril growth kinetics link buffer conditions and topology of 3D collagen I networks. Acta Biomater 2018; 67:206-214. [PMID: 29208553 DOI: 10.1016/j.actbio.2017.11.051] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 11/14/2017] [Accepted: 11/28/2017] [Indexed: 12/12/2022]
Abstract
Three-dimensional fibrillar networks reconstituted from collagen I are widely used as biomimetic scaffolds for in vitro and in vivo cell studies. Various physicochemical parameters of buffer conditions for in vitro fibril formation are well known, including pH-value, ion concentrations and temperature. However, there is a lack of a detailed understanding of reconstituting well-defined 3D network topologies, which is required to mimic specific properties of the native extracellular matrix. We screened a wide range of relevant physicochemical buffer conditions and characterized the topology of the reconstituted 3D networks in terms of mean pore size and fibril diameter. A congruent analysis of fibril formation kinetics by turbidimetry revealed the adjustment of the lateral growth phase of fibrils by buffer conditions to be key in the determination of pore size and fibril diameter of the networks. Although the kinetics of nucleation and linear growth phase were affected by buffer conditions as well, network topology was independent of those two growth phases. Overall, the results of our study provide necessary insights into how to engineer 3D collagen matrices with an independent control over topology parameters, in order to mimic in vivo tissues in in vitro experiments and tissue engineering applications. STATEMENT OF SIGNIFICANCE The study reports a comprehensive analysis of physicochemical conditions of buffer solutions to reconstitute defined 3D collagen I matrices. By a combined analysis of network topology, i.e., pore size and fibril diameter, and the kinetics of fibril formation we can reveal the dependence of 3D network topology on buffer conditions, such as pH-value, phosphate concentration and sodium chloride content. With those results we are now able to provide engineering strategies to independently tune the topology parameters of widely used 3D collagen scaffolds based on the buffer conditions. By that, we enable the straightforward mimicking of extracellular matrices of in vivo tissues for in vitro cell culture experiments and tissue engineering applications.
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106
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Ahn S, Lee KY, Parker KK, Shin K. Formation of Multi-Component Extracellular Matrix Protein Fibers. Sci Rep 2018; 8:1913. [PMID: 29382927 PMCID: PMC5790006 DOI: 10.1038/s41598-018-20371-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/17/2018] [Indexed: 01/04/2023] Open
Abstract
The extracellular matrix (ECM) consists of polymerized protein monomers that form a unique fibrous network providing stability and structural support to surrounding cells. We harnessed the fibrillogenesis mechanisms of naturally occurring ECM proteins to produce artificial fibers with a heterogeneous protein makeup. Using ECM proteins as fibril building blocks, we created uniquely structured multi-component ECM fibers. Sequential incubation of fibronectin (FN) and laminin (LAM) resulted in self-assembly into locally stacked fibers. In contrast, simultaneous incubation of FN with LAM or collagen (COL) produced molecularly stacked multi-component fibers because both proteins share a similar assembly mechanism or possess binding domains specific to each other. Sequential incubation of COL on FN fibers resulted in fibers with sandwiched layers because COL molecules bind to the external surface of FN fibers. By choosing proteins for incubation according to the interplay of their fibrillogenesis mechanisms and their binding domains (exposed when they unfold), we were able to create ECM protein fibers that have never before been observed.
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Affiliation(s)
- Seungkuk Ahn
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, 121-742, Republic of Korea
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Pierce Hall 321, Cambridge, MA, 02138, USA
| | - Keel Yong Lee
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, 121-742, Republic of Korea
| | - Kevin Kit Parker
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Pierce Hall 321, Cambridge, MA, 02138, USA
| | - Kwanwoo Shin
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, 121-742, Republic of Korea.
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107
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Zhang M, Yang J, Ding C, Huang L, Chen L. A novel strategy to fabricate water-soluble collagen using poly(γ-glutamic acid)-derivatives as dual-functional modifier. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2017.11.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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108
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Zhu S, Yuan Q, Yin T, You J, Gu Z, Xiong S, Hu Y. Self-assembly of collagen-based biomaterials: preparation, characterizations and biomedical applications. J Mater Chem B 2018; 6:2650-2676. [DOI: 10.1039/c7tb02999c] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
By combining regulatory parameters with characterization methods, researchers can selectively fabricate collagenous biomaterials with various functional responses for biomedical applications.
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Affiliation(s)
- Shichen Zhu
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
| | - Qijuan Yuan
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Tao Yin
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
| | - Juan You
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
| | - Zhipeng Gu
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Shanbai Xiong
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
| | - Yang Hu
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
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109
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Ng WL, Goh MH, Yeong WY, Naing MW. Applying macromolecular crowding to 3D bioprinting: fabrication of 3D hierarchical porous collagen-based hydrogel constructs. Biomater Sci 2018; 6:562-574. [DOI: 10.1039/c7bm01015j] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
3D bioprinting of hierarchical porous structures for tissue engineering.
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Affiliation(s)
- Wei Long Ng
- Singapore Centre for 3D Printing (SC3DP)
- School of Mechanical and Aerospace Engineering
- Nanyang Technological University (NTU)
- Singapore 639798
- Singapore
| | - Min Hao Goh
- Bio-Manufacturing Programme, Singapore Institute of Manufacturing Technology (SIMTech)
- Agency for Science
- Technology and Research (A*STAR)
- Singapore
| | - Wai Yee Yeong
- Singapore Centre for 3D Printing (SC3DP)
- School of Mechanical and Aerospace Engineering
- Nanyang Technological University (NTU)
- Singapore 639798
- Singapore
| | - May Win Naing
- Bio-Manufacturing Programme, Singapore Institute of Manufacturing Technology (SIMTech)
- Agency for Science
- Technology and Research (A*STAR)
- Singapore
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110
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Fontana G, Delgado LM, Cigognini D. Biologically Inspired Materials in Tissue Engineering. EXTRACELLULAR MATRIX FOR TISSUE ENGINEERING AND BIOMATERIALS 2018. [DOI: 10.1007/978-3-319-77023-9_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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111
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Fish scale-derived collagen patch promotes growth of blood and lymphatic vessels in vivo. Acta Biomater 2017; 63:246-260. [PMID: 28888665 DOI: 10.1016/j.actbio.2017.09.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 08/28/2017] [Accepted: 09/01/2017] [Indexed: 01/11/2023]
Abstract
In this study, Type I collagen was extracted from fish scales asa potential alternative source of collagen for tissue engineering applications. Since unmodified collagen typically has poor mechanical and degradation stability both in vitro and in vivo, additional methylation modification and 1,4-butanediol diglycidyl ether (BDE) crosslinking steps were used to improve the physicochemical properties of fish scale-derived collagen. Subsequently, in vivo studies using a murine model demonstrated the biocompatibility of the different fish scale-derived collagen patches. In general, favorable integration of the collagen patches to the surrounding tissues, with good infiltration of cells, blood vessels (BVs) and lymphatic vessels (LVs) were observed under growth factor-free conditions. Interestingly, significantly higher (p<0.05) number of LVs was found to be more abundant around collagen patches with methylation modification and BDE crosslinking. Overall, we have demonstrated the potential application of fish scale-derived collagen as a promising scaffolding material for various biomedical applications. STATEMENT OF SIGNIFICANCE Currently the most common sources of collagen are of bovine and porcine origins, although the industrial use of collagen obtained from non-mammalian species is growing in importance, particularly since they have a lower risk of disease transmission and are not subjected to any cultural or religious constraints. However, unmodified collagen typically has poor mechanical and degradation stability both in vitro and in vivo. Hence, in this study, Type I collagen was successfully extracted from fish scales and chemically modified and crosslinked. In vitro studies showed overall improvement in the physicochemical properties of the material, whilst in vivo implantation studies showed improvements in the growth of blood and lymphatic host vessels in the vicinity of the implants.
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112
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Diamantides N, Wang L, Pruiksma T, Siemiatkoski J, Dugopolski C, Shortkroff S, Kennedy S, Bonassar LJ. Correlating rheological properties and printability of collagen bioinks: the effects of riboflavin photocrosslinking and pH. Biofabrication 2017; 9:034102. [PMID: 28677597 DOI: 10.1088/1758-5090/aa780f] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Collagen has shown promise as a bioink for extrusion-based bioprinting, but further development of new collagen bioink formulations is necessary to improve their printability. Screening these formulations by measuring print accuracy is a costly and time consuming process. We hypothesized that rheological properties of the bioink before, during, and/or after gelation can be used to predict printability. In this study, we investigated the effects of riboflavin photocrosslinking and pH on type I collagen bioink rheology before, during, and after gelation and directly correlated these findings to the printability of each bioink formulation. From the riboflavin crosslinking study, results showed that riboflavin crosslinking increased the storage moduli of collagen bioinks, but the degree of improvement was less pronounced at higher collagen concentrations. Dots printed with collagen bioinks with riboflavin crosslinking exhibited smaller dot footprint areas than those printed with collagen bioinks without riboflavin crosslinking. From the pH study, results showed that gelation kinetics and final gel moduli were highly pH dependent and both exhibited maxima around pH 8. The shape fidelity of printed lines was highest at pH 8-9.5. The effect of riboflavin crosslinking and pH on cell viability was assessed using bovine chondrocytes. Cell viability in collagen gels was found to decrease after blue light activated riboflavin crosslinking but was not affected by pH. Correlations between rheological parameters and printability showed that the modulus associated with the bioink immediately after extrusion and before deposition was the best predictor of bioink printability. These findings will allow for the more rapid screening of collagen bioink formulations.
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Affiliation(s)
- Nicole Diamantides
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, United States of America
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113
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Shayegan M, Altindal T, Kiefl E, Forde NR. Intact Telopeptides Enhance Interactions between Collagens. Biophys J 2017; 111:2404-2416. [PMID: 27926842 DOI: 10.1016/j.bpj.2016.10.039] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/31/2016] [Accepted: 10/31/2016] [Indexed: 01/08/2023] Open
Abstract
Collagen is the fundamental structural component of a wide range of connective tissues and of the extracellular matrix. It undergoes self-assembly from individual triple-helical proteins into well-ordered fibrils, a process that is key to tissue development and homeostasis, and to processes such as wound healing. Nucleation of this assembly is known to be slowed considerably by pepsin removal of short nonhelical regions that flank collagen's triple helix, known as telopeptides. Using optical tweezers to perform microrheology measurements, we explored the changes in viscoelasticity of solutions of collagen with and without intact telopeptides. Our experiments reveal that intact telopeptides contribute a significant frequency-dependent enhancement of the complex shear modulus. An analytical model of polymers associating to establish chemical equilibrium among higher-order species shows trends in G' and G″ consistent with our experimental observations, including a concentration-dependent crossover in G″/c around 300 Hz. This work suggests that telopeptides facilitate transient intermolecular interactions between collagen proteins, even in the acidic conditions used here.
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Affiliation(s)
- Marjan Shayegan
- Department of Chemistry, Simon Fraser University, Burnaby, Canada
| | - Tuba Altindal
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, Canada; Department of Physics, Simon Fraser University, Burnaby, Canada
| | - Evan Kiefl
- Department of Physics, Simon Fraser University, Burnaby, Canada
| | - Nancy R Forde
- Department of Chemistry, Simon Fraser University, Burnaby, Canada; Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, Canada; Department of Physics, Simon Fraser University, Burnaby, Canada.
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114
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Drzewiecki KE, Grisham DR, Parmar AS, Nanda V, Shreiber DI. Circular Dichroism Spectroscopy of Collagen Fibrillogenesis: A New Use for an Old Technique. Biophys J 2017; 111:2377-2386. [PMID: 27926839 DOI: 10.1016/j.bpj.2016.10.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 09/28/2016] [Accepted: 10/19/2016] [Indexed: 01/14/2023] Open
Abstract
Type-I collagen assembles in a stepwise, hierarchic fashion from the folding of the triple helix to the assembly of fibrils into fibers. The mature assembled fibers are crucial for tissue structure and mechanics, cell interactions, and other functions in vivo. Although triple helix folding can be followed with the use of optical methods such as circular dichroism (CD) spectroscopy, fibrillogenesis is typically measured by alternative methods such as turbidity, rheology, and microscopy. Together, these approaches allow for investigation of the mechanical properties and architectures of collagen-based scaffolds and excised tissues. Herein, we demonstrate that CD spectroscopy, a technique that is used primarily to evaluate the secondary structure of proteins, can also be employed to monitor collagen fibrillogenesis. Type-I collagen suspensions demonstrated a strong, negative ellipticity band between 204 and 210 nm under conditions consistent with fibrillogenesis. Deconvolution of CD spectra before, during, and after fibrillogenesis identified a unique fibril spectrum distinct from triple helix and random coil conformations. The ability to monitor multiple states of collagen simultaneously in one experiment using one modality provides a powerful platform for studying this complex assembly process and the effects of other factors, such as collagenases, on fibrillogenesis and degradation.
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Affiliation(s)
- Kathryn E Drzewiecki
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Daniel R Grisham
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Avanish S Parmar
- Department of Physics, Indian Institute of Technology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Vikas Nanda
- Center for Advanced Biotechnology and Medicine, Department of Biochemistry and Molecular Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - David I Shreiber
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey.
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115
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Burke M, Golaraei A, Atkins A, Akens M, Barzda V, Whyne C. Collagen fibril organization within rat vertebral bone modified with metastatic involvement. J Struct Biol 2017; 199:153-164. [PMID: 28655593 DOI: 10.1016/j.jsb.2017.06.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 06/21/2017] [Accepted: 06/23/2017] [Indexed: 12/22/2022]
Abstract
Metastatic involvement diminishes the mechanical integrity of vertebral bone, however its specific impact on the structural characteristics of a primary constituent of bone tissue, the collagen-I fibril matrix, has not been adequately characterized. Female athymic rats were inoculated with HeLa or Ace-1 cancer cells lines producing osteolytic or mixed (osteolytic & osteoblastic) metastases respectively. A maximum of 21days was allowed between inoculation and rat sacrifice for vertebrae extraction. Linear polarization-in, polarization-out (PIPO) second harmonic generation (SHG) and transmission electron microscopy (TEM) imaging was utilized to assess the impact of metastatic involvement on collagen fibril organization. Increased observations of deviations in the typical plywood motif or a parallel packing structure and an increased average measured susceptibility ratio (related to relative degree of in-plane vs. out-plane fibrils in the analyzed tissue area) in bone adjacent to metastatic involvement was indicative of change in fibrilar organization compared to healthy controls. In particular, collagen-I fibrils in tumour-induced osteoblastic bone growth showed no adherence to the plywood motif or parallel packing structure seen in healthy lamellar bone, exhibiting a much higher susceptibility ratio and degree of fibril disorder. Negative correlations were established between measured susceptibility ratios and the hardness and modulus of metastatic bone tissue assessed in a previous study. Characterizing modifications in tissue level properties is key in defining bone quality in the presence of metastatic disease and their potential impact on material behaviour.
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Affiliation(s)
- Mikhail Burke
- Institution of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada; Orthopaedics Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Ahmad Golaraei
- Department of Physics and Institute for Optical Sciences, University of Toronto, Toronto, ON, Canada; Department of Chemical & Physical Sciences, University of Toronto Mississauga, Mississauga, ON, Canada
| | - Ayelet Atkins
- Orthopaedics Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Margarete Akens
- Department of Surgery, University of Toronto, Toronto, ON, Canada; Techna, University Health Network, Toronto, ON, Canada
| | - Virginijus Barzda
- Department of Physics and Institute for Optical Sciences, University of Toronto, Toronto, ON, Canada; Department of Chemical & Physical Sciences, University of Toronto Mississauga, Mississauga, ON, Canada
| | - Cari Whyne
- Institution of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada; Orthopaedics Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, ON, Canada; Department of Surgery, University of Toronto, Toronto, ON, Canada.
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116
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Hill MJ, Sarkar D. Polyurethane Microgel Based Microtissue: Interface-Guided Assembly and Spreading. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6167-6181. [PMID: 28564546 PMCID: PMC7214101 DOI: 10.1021/acs.langmuir.7b01493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Colloidal gels are three-dimensional networks of microgel particles and can be utilized to design microtissues where the differential adhesive interactions between the particles and cells, guided by their surface energetics, are engineered to spatially assemble the cellular and colloidal components into three-dimensional microtissues. In this work we utilized a colloidal interaction approach to design cell-polyurethane (PU) microgel bimodal microtissues using endothelial cells (ECs) as a normal cell model and a nonmalignant breast cancer cell line (MCF-7) as a cancer cell model. PU microgels were developed from a library of segmental polyurethanes with poly(ethylene glycol) soft segment and aliphatic diisocyanate/l-tyrosine based chain extender as hard segment to modulate the interactions between PU colloidal particles and cells. The surface energies of the microgel particles and cells were estimated using Zisman's critical surface tension and van Oss-Good-Chaudhury theory (vOGCT) from liquid contact angle analysis. Binary interaction potentials between colloidal PU particles and cells and the ternary interaction between colloidal PU particle, cell, and collagen I/Matrigel were calculated to explain the formation of microtissues and their spreading in extraneous biomatrix respectively by using classical and extended DLVO theory (XDLVO). Furthermore, rheological analysis and in silico simulations were used to analyze the assembly and spreading of the PU microgel based microtissues. In vitro experiments showed that ECs and MCF-7 displayed more differentiated (EC spreading/MCF-7 lumen formation) character when mixed with microgel particles that were stable in aqueous medium and more undifferentiated character (EC nonspreading/MCF-7 spreading) when mixed with microgel particles unstable in aqueous medium.
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Affiliation(s)
- Michael J. Hill
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Debanjan Sarkar
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
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117
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Hatayama T, Nakada A, Nakamura H, Mariko W, Tsujimoto G, Nakamura T. Regeneration of gingival tissue using in situ tissue engineering with collagen scaffold. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 124:348-354.e1. [PMID: 28690084 DOI: 10.1016/j.oooo.2017.05.471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/25/2017] [Accepted: 05/06/2017] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The aim of the study was to evaluate 2 types of collagen scaffold for gingival regeneration. STUDY DESIGN Two types of collagen scaffolds, CS-pH7.4 and CS-pH3.0, were prepared by processing atelocollagen at pH 7.4 or 3.0, respectively, followed by dehydrothermal treatment. Gingival wounds with sizes of 4 × 6 mm (rectangle) or 6 mm diameter (circle) were made with buccal incisions in beagle dogs. The defective area was surgically covered with the CS-pH7.4, CS-pH3.0, or no scaffold (control). Gingival regeneration was assessed by monitoring the differences in the lengths of the epithelial and submucosal tissues at the wound site and the normal site. Histopathologic assessments were performed by 4 evaluators independently; statistical significance was evaluated by using the Wald test. RESULTS Significantly higher recovery of epithelial and submucosal tissues, which, in turn, resulted in recovery of gum thickness, was observed in gingival wounds treated with the CS-pH7.4 compared with that in the control. CS-pH3.0 treatment also resulted in higher gingival regeneration compared with the control; however, the effects were more pronounced in wounds treated with the CS-pH7.4. CS-pH7.4-treated wounds showed better gingival regeneration compared with the control and CS-pH3.0-treated wounds, even after adjusting for interevaluator differences using a linear mixed model. CONCLUSIONS CS-pH7.4 is a promising scaffold for gingival tissue regeneration.
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Affiliation(s)
- Takahide Hatayama
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Akira Nakada
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Hiroki Nakamura
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Wakatsuki Mariko
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Gentarou Tsujimoto
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Tatsuo Nakamura
- Department of Regeneration Science and Engineering, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.
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118
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Pensalfini M, Ehret AE, Stüdeli S, Marino D, Kaech A, Reichmann E, Mazza E. Factors affecting the mechanical behavior of collagen hydrogels for skin tissue engineering. J Mech Behav Biomed Mater 2017; 69:85-97. [DOI: 10.1016/j.jmbbm.2016.12.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 12/13/2022]
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119
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Tamaddon M, Burrows M, Ferreira SA, Dazzi F, Apperley JF, Bradshaw A, Brand DD, Czernuszka J, Gentleman E. Monomeric, porous type II collagen scaffolds promote chondrogenic differentiation of human bone marrow mesenchymal stem cells in vitro. Sci Rep 2017; 7:43519. [PMID: 28256634 PMCID: PMC5335259 DOI: 10.1038/srep43519] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 01/25/2017] [Indexed: 12/20/2022] Open
Abstract
Osteoarthritis (OA) is a common cause of pain and disability and is often associated with the degeneration of articular cartilage. Lesions to the articular surface, which are thought to progress to OA, have the potential to be repaired using tissue engineering strategies; however, it remains challenging to instruct cell differentiation within a scaffold to produce tissue with appropriate structural, chemical and mechanical properties. We aimed to address this by driving progenitor cells to adopt a chondrogenic phenotype through the tailoring of scaffold composition and physical properties. Monomeric type-I and type-II collagen scaffolds, which avoid potential immunogenicity associated with fibrillar collagens, were fabricated with and without chondroitin sulfate (CS) and their ability to stimulate the chondrogenic differentiation of human bone marrow-derived mesenchymal stem cells was assessed. Immunohistochemical analyses showed that cells produced abundant collagen type-II on type-II scaffolds and collagen type-I on type-I scaffolds. Gene expression analyses indicated that the addition of CS - which was released from scaffolds quickly - significantly upregulated expression of type II collagen, compared to type-I and pure type-II scaffolds. We conclude that collagen type-II and CS can be used to promote a more chondrogenic phenotype in the absence of growth factors, potentially providing an eventual therapy to prevent OA.
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Affiliation(s)
- M. Tamaddon
- Department of Materials, University of Oxford, Oxford OX1 3PH, UK
- Craniofacial Development and Stem Cell Biology, King’s College London, London SE1 9RT, UK
| | - M. Burrows
- Craniofacial Development and Stem Cell Biology, King’s College London, London SE1 9RT, UK
| | - S. A. Ferreira
- Craniofacial Development and Stem Cell Biology, King’s College London, London SE1 9RT, UK
| | - F. Dazzi
- Division of Cancer Studies, Rayne Institute, King’s College London, London SE5 9NU, UK
| | - J. F. Apperley
- Centre for Haematology, Department of Medicine, Imperial College London, London W12 0NN, UK
- John Goldman Centre for Cellular Therapy, Imperial College Healthcare NHS Trust, London W12 0HS, UK
| | - A. Bradshaw
- John Goldman Centre for Cellular Therapy, Imperial College Healthcare NHS Trust, London W12 0HS, UK
| | - D. D. Brand
- Research Service, Memphis VA Medical Center, Departments of Medicine and Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN 38104, USA
| | - J. Czernuszka
- Department of Materials, University of Oxford, Oxford OX1 3PH, UK
| | - E. Gentleman
- Craniofacial Development and Stem Cell Biology, King’s College London, London SE1 9RT, UK
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120
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Yousefi M, Ariffin F, Huda N. An alternative source of type I collagen based on by-product with higher thermal stability. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.09.029] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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121
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Observing Effects of Calcium/Magnesium Ions and pH Value on the Self-Assembly of Extracted Swine Tendon Collagen by Atomic Force Microscopy. J FOOD QUALITY 2017. [DOI: 10.1155/2017/9257060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Self-assembly of extracted collagen from swine trotter tendon under different conditions was firstly observed using atomic force microscopy; then the effects of collagen concentration, pH value, and metal ions to the topography of the collagen assembly were analyzed with the height images and section analysis data. Collagen assembly under 0.1 M, 0.2 M, 0.3 M CaCl2, and MgCl2 solutions in different pH values showed significant differences (P < 0.05) in the topographical properties including height, width, and roughness. With the concentration being increased, the width of collagen decreased significantly (P < 0.05). The width of collagen fibers was first increased significantly (P < 0.05) and then decreased with the increasing of pH. The collagen was assembled with network structure on the mica in solution with Ca2+ ions. However, it had shown uniformed fibrous structure with Mg2+ ions on the new cleaved mica sheet. In addition, the width of collagen fibrous was 31~58 nm in solution with Mg2+ but 21~50 nm in Ca2+ solution. The self-assembly collagen displayed various potential abilities to construct fibers or membrane on mica surfaces with Ca2+ ions and Mg2+ irons. Besides, the result of collagen self-assembly had shown more relations among solution pH value, metal ions, and collagen molecular concentration, which will provide useful information on the control of collagen self-assembly in tissue engineering and food packaging engineering.
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122
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Liu X, Dan N, Dan W. Insight into the collagen assembly in the presence of lysine and glutamic acid: An in vitro study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:689-700. [DOI: 10.1016/j.msec.2016.09.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 08/22/2016] [Accepted: 09/19/2016] [Indexed: 11/27/2022]
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123
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Mauquoy S, Dupont-Gillain C. Combination of collagen and fibronectin to design biomimetic interfaces: Do these proteins form layer-by-layer assemblies? Colloids Surf B Biointerfaces 2016; 147:54-64. [DOI: 10.1016/j.colsurfb.2016.07.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 07/01/2016] [Accepted: 07/19/2016] [Indexed: 01/10/2023]
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124
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McLane JS, Ligon LA. Stiffened Extracellular Matrix and Signaling from Stromal Fibroblasts via Osteoprotegerin Regulate Tumor Cell Invasion in a 3-D Tumor in Situ Model. CANCER MICROENVIRONMENT 2016; 9:127-139. [PMID: 27654881 DOI: 10.1007/s12307-016-0188-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 09/09/2016] [Indexed: 02/04/2023]
Abstract
Several changes have been described in the stroma surrounding a tumor, including changes in cellular composition, altered extracellular matrix composition and organization, and increases in stiffness. Tumor cells are influenced by the composition, organization, and mechanical properties of the microenvironment, and by signals from stromal cells. Here we sought to test whether signaling from stromal fibroblasts and/or the small change in stiffness observed in vivo surrounding epithelial tumors regulates tumor cell invasion from a model of a tumor in situ. We generated a novel tumor in situ model system in which a tumor spheroid is encased within a collagen-IV containing membrane and further encased within a collagen-I matrix of in vivo stiffness with or without fibroblasts. Effects of the matrix, fibroblasts or fibroblast signals were determined by observing the invasion of tumor cells into the matrix. Effects of reciprocal tumor cell signaling upon fibroblasts were determined by observing markers of fibroblast activation. We found that a stiffened matrix led to increased dissemination of MDA-MB-231 cells from tumor spheroids when no fibroblasts were present and that MCF10A cells maintained a more normal organization with a stiffened matrix. The presence of fibroblasts, or fibroblast conditioned media, attenuated the effect upon MDA-MB-231 cells. We also observed an attenuation of fibroblast activation associated gene expression in the presence of MDA-MB-231 cells, with a paradoxical increase in activation associated contractile activity. Furthermore, we identified osteoprotegerin as a soluble factor released by fibroblasts in the stiffened environment that is key to the inhibition of cell invasion.
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Affiliation(s)
- Joshua S McLane
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-5320, USA.,Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180-3590, USA.,Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, 12180-3590, USA
| | - Lee A Ligon
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180-3590, USA. .,Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, 12180-3590, USA.
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125
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Hu J, Li T, Liu X, Liu D. Seasonal variation of acid-soluble collagens extracted from the swim bladders and skins of bighead carp (Hypophthalmichthys nobilis) and grass carp (Ctenopharyngodon idella). FOOD BIOSCI 2016. [DOI: 10.1016/j.fbio.2016.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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126
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Extracellular Matrix Revisited: Roles in Tissue Engineering. Int Neurourol J 2016; 20:S23-29. [PMID: 27230457 PMCID: PMC4895908 DOI: 10.5213/inj.1632600.318] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 05/14/2016] [Indexed: 01/11/2023] Open
Abstract
The extracellular matrix (ECM) is a heterogeneous, connective network composed of fibrous glycoproteins that coordinate in vivo to provide the physical scaffolding, mechanical stability, and biochemical cues necessary for tissue morphogenesis and homeostasis. This review highlights some of the recently raised aspects of the roles of the ECM as related to the fields of biophysics and biomedical engineering. Fundamental aspects of focus include the role of the ECM as a basic cellular structure, for novel spontaneous network formation, as an ideal scaffold in tissue engineering, and its essential contribution to cell sheet technology. As these technologies move from the laboratory to clinical practice, they are bound to shape the vast field of tissue engineering for medical transplantations.
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127
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Ye B, Luo X, Li Z, Zhuang C, Li L, Lu L, Ding S, Tian J, Zhou C. Rapid biomimetic mineralization of collagen fibrils and combining with human umbilical cord mesenchymal stem cells for bone defects healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:43-51. [PMID: 27523994 DOI: 10.1016/j.msec.2016.05.104] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 04/30/2016] [Accepted: 05/23/2016] [Indexed: 12/17/2022]
Abstract
Collagen biomineralization is regulated by complicated interactions between the collagen matrix and non-collagenous extracellular proteins. Here, the use of sodium tripolyphosphate to simulate the templating functional motif of the C-terminal fragment of non-collagenous proteins is reported, and a low molecular weight polyacrylic acid served as a sequestration agent to stabilize amorphous calcium phosphate into nanoprecursors. Self-assembled collagen fibrils served as a fixed template for achieving rapid biomimetic mineralization in vitro. Results demonstrated that, during the mineralization process, intrafibrillar and extrafibrillar hydroxyapatite mineral with collagen fibrils formed and did so via bottom-up nanoparticle assembly based on the non-classical crystallization approach in the presence of these dual biomimetic functional analogues. In vitro human umbilical cord mesenchymal stem cell (hUCMSC) culture found that the mineralized scaffolds have a better cytocompatibility in terms of cell viability, adhesion, proliferation, and differentiation into osteoblasts. A rabbit femoral condyle defect model was established to confirm the ability of the n-HA/collagen scaffolds to facilitate bone regeneration and repair. The images of gross anatomy, MRI, CT and histomorphology taken 6 and 12weeks after surgery showed that the biomimetic mineralized collagen scaffolds with hUCMSCs can promote the healing speed of bone defects in vivo, and both of the scaffolds groups performing better than the bone defect control group. As new bone tissue formed, the scaffolds degraded and were gradually absorbed. All these results demonstrated that both of the scaffolds and cells have better histocompatibility.
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Affiliation(s)
- Bihua Ye
- Department of Material Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Jinan University, Guangzhou 510632, China
| | - Xueshi Luo
- Department of Material Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Jinan University, Guangzhou 510632, China
| | - Zhiwen Li
- Department of Material Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Jinan University, Guangzhou 510632, China
| | - Caiping Zhuang
- Department of Anesthesiology, Huizhou Central People's Hospital, Huizhou 516001, China
| | - Lihua Li
- Department of Material Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Jinan University, Guangzhou 510632, China.
| | - Lu Lu
- Department of Material Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Jinan University, Guangzhou 510632, China
| | - Shan Ding
- Department of Material Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Jinan University, Guangzhou 510632, China
| | - Jinhuan Tian
- Department of Material Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Jinan University, Guangzhou 510632, China
| | - Changren Zhou
- Department of Material Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Jinan University, Guangzhou 510632, China.
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128
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McLane JS, Ligon LA. Palladin mediates stiffness-induced fibroblast activation in the tumor microenvironment. Biophys J 2016. [PMID: 26200861 DOI: 10.1016/j.bpj.2015.06.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mechanical properties of the tumor microenvironment have emerged as key factors in tumor progression. It has been proposed that increased tissue stiffness can transform stromal fibroblasts into carcinoma-associated fibroblasts. However, it is unclear whether the three to five times increase in stiffness seen in tumor-adjacent stroma is sufficient for fibroblast activation. In this study we developed a three-dimensional (3D) hydrogel model with precisely tunable stiffness and show that a physiologically relevant increase in stiffness is sufficient to lead to fibroblast activation. We found that soluble factors including CC-motif chemokine ligand (CCL) chemokines and fibronectin are necessary for this activation, and the combination of C-C chemokine receptor type 4 (CCR4) chemokine receptors and β1 and β3 integrins are necessary to transduce these chemomechanical signals. We then show that these chemomechanical signals lead to the gene expression changes associated with fibroblast activation via a network of intracellular signaling pathways that include focal adhesion kinase (FAK) and phosphoinositide 3-kinase (PI3K). Finally, we identify the actin-associated protein palladin as a key node in these signaling pathways that result in fibroblast activation.
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Affiliation(s)
- Joshua S McLane
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York; Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York
| | - Lee A Ligon
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York; Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York.
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129
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A description of hydrogen bonds in the chromium(III)-crosslinked collagen: insight from the molecular dynamics simulation. Struct Chem 2016. [DOI: 10.1007/s11224-016-0752-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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130
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Jiang Y, Wang H, Deng M, Wang Z, Zhang J, Wang H, Zhang H. Effect of ultrasonication on the fibril-formation and gel properties of collagen from grass carp skin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:1038-1046. [DOI: 10.1016/j.msec.2015.11.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 09/25/2015] [Accepted: 11/03/2015] [Indexed: 01/14/2023]
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131
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Girão AF, Gonçalves G, Bhangra KS, Phillips JB, Knowles J, Irurueta G, Singh MK, Bdkin I, Completo A, Marques PAAP. Electrostatic self-assembled graphene oxide-collagen scaffolds towards a three-dimensional microenvironment for biomimetic applications. RSC Adv 2016. [DOI: 10.1039/c6ra10213a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The manipulation of the interactions between the cationic amine groups from collagen and the anionic carboxylic groups from graphene oxide mediate the synthesis of a self-assembled hydrogel capable of generate suitable 3D cellular microenvironments.
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Affiliation(s)
- André F. Girão
- TEMA
- Department of Mechanical Engineering
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Gil Gonçalves
- TEMA
- Department of Mechanical Engineering
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Kulraj S. Bhangra
- Department of Biomaterials and Tissue Engineering
- UCL Eastman Dental Institute
- University College London
- London WC1X 8LD
- UK
| | - James B. Phillips
- Department of Biomaterials and Tissue Engineering
- UCL Eastman Dental Institute
- University College London
- London WC1X 8LD
- UK
| | - Jonathan Knowles
- Department of Biomaterials and Tissue Engineering
- UCL Eastman Dental Institute
- University College London
- London WC1X 8LD
- UK
| | - Gonzalo Irurueta
- TEMA
- Department of Mechanical Engineering
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Manoj K. Singh
- TEMA
- Department of Mechanical Engineering
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Igor Bdkin
- TEMA
- Department of Mechanical Engineering
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - António Completo
- TEMA
- Department of Mechanical Engineering
- University of Aveiro
- 3810-193 Aveiro
- Portugal
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132
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Chen Y, Dan N, Wang L, Liu X, Dan W. Study on the cross-linking effect of a natural derived oxidized chitosan oligosaccharide on the porcine acellular dermal matrix. RSC Adv 2016. [DOI: 10.1039/c6ra03434a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The purpose of this study is to investigate the cross-linking interaction between a natural derived oxidized chitosan oligosaccharide (OCOS) and the porcine acellular dermal matrix (pADM), and further evaluate the varying properties of the pADM after cross-linked.
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Affiliation(s)
- Yining Chen
- Department of Biomass Chemistry and Engineering
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Nianhua Dan
- Department of Biomass Chemistry and Engineering
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Lei Wang
- Department of Biomass Chemistry and Engineering
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Xinhua Liu
- Department of Biomass Chemistry and Engineering
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Weihua Dan
- Department of Biomass Chemistry and Engineering
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
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133
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Diaz Quiroz JF, Li Y, Aparicio C, Echeverri K. Development of a 3D matrix for modeling mammalian spinal cord injury in vitro. Neural Regen Res 2016; 11:1810-1815. [PMID: 28123426 PMCID: PMC5204238 DOI: 10.4103/1673-5374.194751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Spinal cord injury affects millions of people around the world, however, limited therapies are available to improve the quality of life of these patients. Spinal cord injury is usually modeled in rats and mice using contusion or complete transection models and this has led to a deeper understanding of the molecular and cellular complexities of the injury. However, it has not to date led to development of successful novel therapies, this is in part due to the complexity of the injury and the difficulty of deciphering the exact roles and interactions of different cells within this complex environment. Here we developed a collagen matrix that can be molded into the 3D tubular shape with a lumen and can hence support cell interactions in a similar architecture to a spinal cord. We show that astrocytes can be successfully grown on this matrix in vitro and when injured, the cells respond as they do in vivo and undergo reactive gliosis, one of the steps that lead to formation of a glial scar, the main barrier to spinal cord regeneration. In the future, this system can be used to quickly assess the effect of drugs on glial scar protein activity or to perform live imaging of labeled cells after exposure to drugs.
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Affiliation(s)
- Juan Felipe Diaz Quiroz
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN, USA; Current address: Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Yuping Li
- Minnesota Dental Research Center for Biomaterials and Biomechanics, Department of Restorative Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA
| | - Conrado Aparicio
- Minnesota Dental Research Center for Biomaterials and Biomechanics, Department of Restorative Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA
| | - Karen Echeverri
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN, USA
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134
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Lakra R, Kiran MS, Sai KP. Fabrication of homobifunctional crosslinker stabilized collagen for biomedical application. Biomed Mater 2015; 10:065015. [DOI: 10.1088/1748-6041/10/6/065015] [Citation(s) in RCA: 10] [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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135
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Mredha MTI, Zhang X, Nonoyama T, Nakajima T, Kurokawa T, Takagi Y, Gong JP. Swim bladder collagen forms hydrogel with macroscopic superstructure by diffusion induced fast gelation. J Mater Chem B 2015; 3:7658-7666. [PMID: 32264576 DOI: 10.1039/c5tb00877h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Marine collagen has been attracting attention as a medical material in recent times due to the low risk of pathogen infection compared to animal collagen. Type I collagen extracted from the swim bladder of Bester sturgeon fish has excellent characteristics such as high denaturation temperature, high solubility, low viscosity and an extremely fast rate to form large bundle of fibers under certain conditions. These specific characteristics of swim bladder collagen (SBC) permit us to create stable, disk shaped hydrogels with concentric orientation of collagen fibers by the controlled diffusion of neutral buffer through collagen solution at room temperature. However, traditionally used animal collagens, e.g. calf skin collagen (CSC) and porcine skin collagen (PSC), could not form any stable and oriented structure by this method. The mechanism of the superstructure formation of SBC by a diffusion induced gelation process has been explored. The fast fibrillogenesis rate of SBC causes a quick squeezing out of the solvent from the gel phase to the sol phase during gelation, which builds an internal stress at the gel-sol interface. The tensile stress induces the collagen molecules of the gel phase to align along the gel-sol interface direction to give this concentric ring-shaped orientation pattern. On the other hand, the slow fibrillogenesis rate of animal collagens due to the high viscosity of the solution does not favor the ordered structure formation. The denaturation temperature of SBC increases significantly from 31 °C to 43 °C after gelation, whereas that of CSC and PSC were found to increase a little. Rheology experiment shows that the SBC gel has storage modulus larger than 15 kPa. The SBC hydrogels with thermal and mechanical stability have potential as bio-materials for tissue engineering applications.
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136
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Hanachi P, Jafary F, Jafary F, Motamedi S. Immobilization of the Alkaline Phosphatase on Collagen Surface via Cross-Linking Method. IRANIAN JOURNAL OF BIOTECHNOLOGY 2015; 13:32-38. [PMID: 28959297 DOI: 10.15171/ijb.1203] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Collagen, the most abundant protein in the human body, and as an extracellular matrix protein, has an important role in the fiber formation. This feature of the collagen renders establishment of the structural skeleton in tissues. Regarding specific features associated with the collagen, such as, formation of the porous structure, permeability and hydrophilicity, it can also be used as a biocompatible matrix in the enzyme engineering. OBJECTIVES The aim of the present study was to investigate the application of the type I collagen as a matrix for alkaline phosphatase immobilization using cross-linking method. MATERIALS AND METHODS The Alkaline phosphatase was covalently immobilized on collagen matrix by using 1-ethyl-3- (dimethylaminopropyl) carbodiimide hydrochloride (EDC). The source of the alkaline phosphatase was from the bovine intestinal mucous. After that, the activity of the immobilized enzyme was assayed under different experimental conditions. RESULTS The optimum pH was similar to that of the free enzyme, whereas the optimum temperature and thermal stability were shown some increments. The surface topography of the collagen matrix containing immobilized enzyme and ALP (Alkaline phosphatase) deficient was investigated by Atomic-force microscopy (AFM). Images that have been obtained applying AFM show significant differences between uncovered and immobilized enzyme- matrix surface topography. CONCLUSIONS Our findings suggest that type I collagen can be utilized as a matrix for alkaline phosphatase immobilization via cross-linking method.
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Affiliation(s)
- Parichehr Hanachi
- Department of Biotecknology, Biochemistry unite, Alzahra University, Tehran, Iran
| | - Farzaneh Jafary
- Department of Biochemistry Shahid Sadoughy University, Faculty of Medicine, Yazd, Iran
| | - Fariba Jafary
- Young Researchers Club, I.A.U, Falavarjane University, Isfahane, Iran
| | - Shima Motamedi
- School of Veterinary Medicine, Razi University, Kermanshah, Iran
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137
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Grzincic EM, Murphy CJ. Gold Nanorods Indirectly Promote Migration of Metastatic Human Breast Cancer Cells in Three-Dimensional Cultures. ACS NANO 2015; 9:6801-6816. [PMID: 26118624 DOI: 10.1021/acsnano.5b03362] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Gold nanomaterials are intensively studied for applications in disease detection, diagnosis and therapeutics, and this has motivated considerable research to determine their interaction with biomolecules, cells and cell behaviors. However, few studies look at how nanomaterials alter the extracellular matrix (ECM) and cell-ECM interactions. Nanomaterials in the body would interact with the entire cellular environment, and it is imperative to account for this when studying the impact of nanomaterials on living systems. Furthermore, recent evidence finds that migration rates of cells in 2D can be affected by nanomaterials, and uptake of the nanomaterials is not necessary to exert an effect. In this study, three-dimensional nested type I collagen matrices were utilized as a model ECM to study how gold nanorods affect the migration of MDA-MB-231 human breast cancer cells. Spontaneous cell migration through collagen containing gold nanorods was found to increase with increasing concentrations of gold nanorods, independent of intracellular uptake of the nanorods. Gold nanorods in the collagen matrix were found to alter collagen mechanical properties and structure, molecular diffusion, cellular adhesion, cell morphology, mode of migration and protease expression. Correlation between decreased cellular adhesion and rounded cell morphology and locomotion in nanorod-containing collagen suggests the induction of an amoeboid-like migratory phenotype.
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Affiliation(s)
- Elissa M Grzincic
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Catherine J Murphy
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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138
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Yan M, Qin S, Li J. Study on the self-assembly property of type I collagen prepared from tilapia (Oreochromis niloticus) skin by different extraction methods. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12870] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Mingyan Yan
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
| | - Song Qin
- Yantai Institute of Coastal Zone Research; Chinese Academy of Sciences; No. 17, Chunhui Road Yantai Shandong Province 264003 China
| | - Jie Li
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
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139
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Furusawa K, Mizutani T, Machino H, Yahata S, Fukui A, Sasaki N. Application of Multichannel Collagen Gels in Construction of Epithelial Lumen-like Engineered Tissues. ACS Biomater Sci Eng 2015; 1:539-548. [DOI: 10.1021/acsbiomaterials.5b00003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuya Furusawa
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Takeomi Mizutani
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Hiromi Machino
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Saki Yahata
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Akimasa Fukui
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Naoki Sasaki
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
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140
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Sapudom J, Rubner S, Martin S, Kurth T, Riedel S, Mierke CT, Pompe T. The phenotype of cancer cell invasion controlled by fibril diameter and pore size of 3D collagen networks. Biomaterials 2015; 52:367-75. [DOI: 10.1016/j.biomaterials.2015.02.022] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 02/02/2015] [Indexed: 01/27/2023]
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141
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Ahn S, Deravi LF, Park SJ, Dabiri BE, Kim JS, Parker KK, Shin K. Self-organizing large-scale extracellular-matrix protein networks. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:2838-2845. [PMID: 25833069 DOI: 10.1002/adma.201405556] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 03/09/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Seungkuk Ahn
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, 121-742, Republic of Korea
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142
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Yu L, Grist SM, Nasseri SS, Cheng E, Hwang YCE, Ni C, Cheung KC. Core-shell hydrogel beads with extracellular matrix for tumor spheroid formation. BIOMICROFLUIDICS 2015; 9:024118. [PMID: 25945144 PMCID: PMC4401801 DOI: 10.1063/1.4918754] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 04/07/2015] [Indexed: 05/09/2023]
Abstract
Creating multicellular tumor spheroids is critical for characterizing anticancer treatments since they may provide a better model of the tumor than conventional monolayer culture. Moreover, tumor cell interaction with the extracellular matrix can determine cell organization and behavior. In this work, a microfluidic system was used to form cell-laden core-shell beads which incorporate elements of the extracellular matrix and support the formation of multicellular spheroids. The bead core (comprising a mixture of alginate, collagen, and reconstituted basement membrane, with gelation by temperature control) and shell (comprising alginate hydrogel, with gelation by ionic crosslinking) were simultaneously formed through flow focusing using a cooled flow path into the microfluidic chip. During droplet gelation, the alginate acts as a fast-gelling shell which aids in preventing droplet coalescence and in maintaining spherical droplet geometry during the slower gelation of the collagen and reconstituted basement membrane components as the beads warm up. After droplet gelation, the encapsulated MCF-7 cells proliferated to form uniform spheroids when the beads contained all three components: alginate, collagen, and reconstituted basement membrane. The dose-dependent response of the MCF-7 cell tumor spheroids to two anticancer drugs, docetaxel and tamoxifen, was compared to conventional monolayer culture.
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Affiliation(s)
- L Yu
- Electrical and Computer Engineering, University of British Columbia , Vancouver, British Columbia V6T 1Z4, Canada
| | - S M Grist
- Electrical and Computer Engineering, University of British Columbia , Vancouver, British Columbia V6T 1Z4, Canada
| | - S S Nasseri
- Electrical and Computer Engineering, University of British Columbia , Vancouver, British Columbia V6T 1Z4, Canada
| | - E Cheng
- Electrical and Computer Engineering, University of British Columbia , Vancouver, British Columbia V6T 1Z4, Canada
| | - Y-C E Hwang
- Electrical and Computer Engineering, University of British Columbia , Vancouver, British Columbia V6T 1Z4, Canada
| | - C Ni
- Electrical and Computer Engineering, University of British Columbia , Vancouver, British Columbia V6T 1Z4, Canada
| | - K C Cheung
- Electrical and Computer Engineering, University of British Columbia , Vancouver, British Columbia V6T 1Z4, Canada
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143
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Srivatsan KV, Duraipandy N, Begum S, Lakra R, Ramamurthy U, Korrapati PS, Kiran MS. Effect of curcumin caged silver nanoparticle on collagen stabilization for biomedical applications. Int J Biol Macromol 2015; 75:306-15. [PMID: 25661876 DOI: 10.1016/j.ijbiomac.2015.01.050] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 12/19/2014] [Accepted: 01/16/2015] [Indexed: 02/07/2023]
Abstract
The current study aims at understanding the influence of curcumin caged silver nanoparticle (CCSNP) on stability of collagen. The results indicated that curcumin caged silver nanoparticles efficiently stabilize collagen, indicated by enhanced tensile strength, fibril formation and viscosity. The tensile strength of curcumin caged silver nanoparticle cross-linked collagen and elongation at break was also found to be higher than glutaraldehyde cross-linked collagen. The physicochemical characteristics of curcumin caged nanoparticle cross-linked collagen exhibited enhanced strength. The thermal properties were also good with both thermal degradation temperature and hydrothermal stability higher than native collagen. CD analysis showed no structural disparity in spite of superior physicochemical properties suggesting the significance of curcumin caged nanoparticle mediated cross-linking. The additional enhancement in the stabilization of collagen could be attributed to multiple sites for interaction with collagen molecule provided by curcumin caged silver nanoparticles. The results of cell proliferation and anti-microbial activity assays indicated that curcumin caged silver nanoparticles promoted cell proliferation and inhibited microbial growth making it an excellent biomaterial for wound dressing application. The study opens scope for nano-biotechnological strategies for the development of alternate non-toxic cross-linking agents facilitating multiple site interaction thereby improving therapeutic values to the collagen for biomedical application.
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Affiliation(s)
| | - N Duraipandy
- Council of Scientific and Industrial Research, Central Leather Research Institute, Adyar, Chennai 600020, India; Academy of Scientific and Innovative Research, New Delhi, India
| | | | - Rachita Lakra
- Council of Scientific and Industrial Research, Central Leather Research Institute, Adyar, Chennai 600020, India
| | - Usha Ramamurthy
- Council of Scientific and Industrial Research, Central Leather Research Institute, Adyar, Chennai 600020, India
| | - Purna Sai Korrapati
- Council of Scientific and Industrial Research, Central Leather Research Institute, Adyar, Chennai 600020, India; Academy of Scientific and Innovative Research, New Delhi, India
| | - Manikantan Syamala Kiran
- Council of Scientific and Industrial Research, Central Leather Research Institute, Adyar, Chennai 600020, India; Academy of Scientific and Innovative Research, New Delhi, India.
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144
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Pawelec KM, Husmann A, Wardale RJ, Best SM, Cameron RE. Ionic solutes impact collagen scaffold bioactivity. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:91. [PMID: 25649518 PMCID: PMC4381095 DOI: 10.1007/s10856-015-5457-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/07/2014] [Indexed: 06/04/2023]
Abstract
The structure of ice-templated collagen scaffolds is sensitive to many factors. By adding 0.5 wt% of sodium chloride or sucrose to collagen slurries, scaffold structure could be tuned through changes in ice growth kinetics and interactions of the solute and collagen. With ionic solutes (sodium chloride) the entanglements of the collagen molecule decreased, leading to fibrous scaffolds with increased pore size and decreased attachment of chondrocytes. With non-ionic solutes (sucrose) ice growth was slowed, leading to significantly reduced pore size and up-regulated cell attachment. This highlights the large changes in structure and biological function stimulated by solutes in ice-templating systems.
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Affiliation(s)
- K. M. Pawelec
- />Materials Science and Metallurgy Department, Cambridge Centre for Medical Materials, University of Cambridge, Cambridge, CB3 0FS UK
| | - A. Husmann
- />Materials Science and Metallurgy Department, Cambridge Centre for Medical Materials, University of Cambridge, Cambridge, CB3 0FS UK
| | - R. J. Wardale
- />Division of Trauma and Orthopaedic Surgery, University of Cambridge, Cambridge, CB2 2QQ UK
| | - S. M. Best
- />Materials Science and Metallurgy Department, Cambridge Centre for Medical Materials, University of Cambridge, Cambridge, CB3 0FS UK
| | - R. E. Cameron
- />Materials Science and Metallurgy Department, Cambridge Centre for Medical Materials, University of Cambridge, Cambridge, CB3 0FS UK
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145
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Yang H, Wang H, Zhao Y, Wang H, Zhang H. Effect of heat treatment on the enzymatic stability of grass carp skin collagen and its ability to form fibrils in vitro. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:329-336. [PMID: 24798991 DOI: 10.1002/jsfa.6724] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 04/28/2014] [Accepted: 04/28/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND The molecular configuration, molecular weight distribution and thermal transition enthalpy (ΔH) of grass carp skin (GCS) collagens after heat treatment under different conditions were measured using circular dichroism, gel filtration chromatography and differential scanning calorimetry (DSC). The enzymatic stability of collagen was evaluated using different enzymes, while the ability to form fibrils in vitro was assessed by morphological observation of collagen fibrils and turbidity testing. RESULTS The ΔH values, in-solution molecular aggregation and the stability to enzymatic hydrolysis of GCS collagen decreased irreversibly and progressively with the duration of heat treatment at 33 °C, which was the onset endothermic temperature obtained from the DSC curve. A strong positive linear correlation between the enzymatic sensitivity of collagen and the degree of thermal denaturation was found. A decrease in fibril diameter and D-periodicity length with denaturation could also be observed in the SEM and TEM images. CONCLUSION The onset endothermic temperature (To ) rather than the denaturation temperature (Td ) is the threshold temperature for configurational stability of GCS collagen in acidic solution, and the biological properties would obviously change if the collagen was heat treated at this temperature.
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Affiliation(s)
- Huan Yang
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, Hubei, China
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146
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Kalbitzer L, Franke K, Möller S, Schnabelrauch M, Pompe T. Glycosaminoglycan functionalization of mechanically and topologically defined collagen I matrices. J Mater Chem B 2015; 3:8902-8910. [DOI: 10.1039/c5tb01737h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A sequential preparation approach provides the option to functionalize collagen I networks with glycosaminoglycans independently of network topology and mechanics.
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Affiliation(s)
- Liv Kalbitzer
- Institute of Biochemistry
- Faculty of Biosciences
- Pharmacy and Psychology
- Universität Leipzig
- Leipzig 04103
| | - Katja Franke
- Institute of Biochemistry
- Faculty of Biosciences
- Pharmacy and Psychology
- Universität Leipzig
- Leipzig 04103
| | | | | | - Tilo Pompe
- Institute of Biochemistry
- Faculty of Biosciences
- Pharmacy and Psychology
- Universität Leipzig
- Leipzig 04103
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147
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148
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Wang X, Chen Y, Xue L, Pothayee N, Zhang R, Riffle JS, Reineke TM, Madsen LA. Diffusion of Drug Delivery Nanoparticles into Biogels Using Time-Resolved MicroMRI. J Phys Chem Lett 2014; 5:3825-3830. [PMID: 26278755 DOI: 10.1021/jz501929u] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nanoparticle-based therapeutic agents can in some cases provide selective delivery to tumors, yet this field would greatly benefit from more detailed understanding of particle transport into and within tumor tissue. To provide fundamental information for optimizing interstitial transport of polymeric nanoparticles, we have developed a quantitative approach employing real-time analysis of nanoparticle diffusion into bulk biological hydrogels using microMRI. We use two distinct imaging approaches to probe the migration of two novel "theranostic" polymeric agents (combining drug delivery and contrast agent functions) into bulk hydrogels. Theranostic agent diffusion measured using time-resolved MRI agrees well with diffusion measured for simple probe particles using fluorescence spectroscopies. Furthermore, compared with established fluorescence techniques, which are restricted by sample thickness, our approach provides a three-dimensional diffusion rate and concentration distribution of nanoparticles over macroscopic distances in biological media. These results carry implications for in vivo tracking of theranostic nanoparticles into tumor interstitium.
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Affiliation(s)
- Xiaoling Wang
- †Department of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Ying Chen
- †Department of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Lian Xue
- ‡Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Nipon Pothayee
- †Department of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
- §The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Rui Zhang
- †Department of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Judy S Riffle
- †Department of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Theresa M Reineke
- ‡Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Louis A Madsen
- †Department of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
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149
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Fibril formation pH controls intrafibrillar collagen biomineralization in vitro and in vivo. Biomaterials 2014; 37:252-9. [PMID: 25453955 DOI: 10.1016/j.biomaterials.2014.10.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 10/02/2014] [Indexed: 12/27/2022]
Abstract
We demonstrate that intrafibrillar, homogenous collagen biomineralization can be achieved by controlling self-assembly under mildly alkaline conditions. Using dense collagen (DC) gels as an osteoid model, we modulated their fibrillogenesis environment to evaluate the effects of fibrillogenesis pH on the protein charge distribution and ultimately on biomineralization. Cationic and anionic dye staining and electron cryomicroscopy analyses established that fibrillogenesis under mildly alkaline conditions promotes the formation of electronegative charges within the protein (anionic DC gels). These charges are stable upon titration of the gel pH to physiological values. Subsequent exposure of anionic DC gels to simulated body fluid induced the intrafibrillar biomineralization of the gels, promoting a rapid, extensive formation of carbonated hydroxyapatite, and strongly impacting gel mechanical properties. The generality and significance of this approach has been addressed by implanting freshly made anionic DC gels in vivo, in a rat subcutaneous model. Subcutaneous implants showed an extensive, homogenous biomineralization as early as at day 7, indicating that anionic collagen gels rapidly self-mineralize upon contact with body fluids in a non-osseous implantation site. The control of collagen fibrillogenesis pH provides not only new interpretations to what has been called the collagen mineralization enigma by demonstrating that neat collagen can intrafibrilarly self-mineralize, but it will also set a new starting point for the use of DC gels in bone regenerative medicine, in addition as potential applications as mineralized tissue model or as slow-release delivery carriers.
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150
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Stamov DR, Stock E, Franz CM, Jähnke T, Haschke H. Imaging collagen type I fibrillogenesis with high spatiotemporal resolution. Ultramicroscopy 2014; 149:86-94. [PMID: 25486377 DOI: 10.1016/j.ultramic.2014.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 09/02/2014] [Accepted: 10/07/2014] [Indexed: 10/24/2022]
Abstract
Fibrillar collagens, such as collagen type I, belong to the most abundant extracellular matrix proteins and they have received much attention over the last five decades due to their large interactome, complex hierarchical structure and high mechanical stability. Nevertheless, the collagen self-assembly process is still incompletely understood. Determining the real-time kinetics of collagen type I formation is therefore pivotal for better understanding of collagen type I structure and function, but visualising the dynamic self-assembly process of collagen I on the molecular scale requires imaging techniques offering high spatiotemporal resolution. Fast and high-speed scanning atomic force microscopes (AFM) provide the means to study such processes on the timescale of seconds under near-physiological conditions. In this study we have applied fast AFM tip scanning to study the assembly kinetics of fibrillar collagen type I nanomatrices with a temporal resolution reaching eight seconds for a frame size of 500 nm. By modifying the buffer composition and pH value, the kinetics of collagen fibrillogenesis can be adjusted for optimal analysis by fast AFM scanning. We furthermore show that amplitude-modulation imaging can be successfully applied to extract additional structural information from collagen samples even at high scan rates. Fast AFM scanning with controlled amplitude modulation therefore provides a versatile platform for studying dynamic collagen self-assembly processes at high resolution.
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Affiliation(s)
| | - Erik Stock
- JPK Instruments AG, Bouchéstrasse 12, 12435 Berlin, Germany
| | - Clemens M Franz
- DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Wolfgang-Gaede-Strasse 1a, 76131 Karlsruhe, Germany
| | - Torsten Jähnke
- JPK Instruments AG, Bouchéstrasse 12, 12435 Berlin, Germany
| | - Heiko Haschke
- JPK Instruments AG, Bouchéstrasse 12, 12435 Berlin, Germany
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