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Wang C, Tanataweethum N, Karnik S, Bhushan A. Novel Microfluidic Colon with an Extracellular Matrix Membrane. ACS Biomater Sci Eng 2018; 4:1377-1385. [DOI: 10.1021/acsbiomaterials.7b00883] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Chengyao Wang
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Nida Tanataweethum
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Sonali Karnik
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Abhinav Bhushan
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, United States
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252
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Three-Dimensional Hepatocellular Carcinoma/Fibroblast Model on a Nanofibrous Membrane Mimics Tumor Cell Phenotypic Changes and Anticancer Drug Resistance. NANOMATERIALS 2018; 8:nano8020064. [PMID: 29370123 PMCID: PMC5852456 DOI: 10.3390/nano8020064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 12/15/2022]
Abstract
Three-dimensional (3D) in vitro tissue or organ models can effectively mimic the complex microenvironment of many types of human tissues for medical applications. Unfortunately, development of 3D cancer models, which involve cancer/stromal cells in a 3D environment, has remained elusive due to the extreme complexity of the tumor microenvironment (TME) and the stepwise progression of human cancer. Here, we developed hepatocellular carcinoma (HCC) models, which consist of fibroblasts as stromal cells, HCC cells, and a nanofibrous membrane to mimic the complex TME. The 3D HCC models were fabricated using three distinct culture methods: cancer cells grown directly on the nanofibrous membrane (mono model), fibroblasts covering the nanofibrous membrane (layer model), and both cancer cells and fibroblasts grown on the nanofibrous membrane (mixed model). Interestingly, the mono model and layer model showed similar tissue structures, whereas the mixed model resulted in phenotypic changes to the cancer cells. Further analysis demonstrated that the mixed models promoted the expression of fibronectin and vimentin, and showed higher resistance to anticancer drugs compared with the other models. Thus, our 3D HCC model could be utilized for testing efficient anticancer therapies at various stages of cancer, with potential application to different tumor types.
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253
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Kaufman G, Whitescarver RA, Nunes L, Palmer XL, Skrtic D, Tutak W. Effects of protein-coated nanofibers on conformation of gingival fibroblast spheroids: potential utility for connective tissue regeneration. ACTA ACUST UNITED AC 2018; 13:025006. [PMID: 29364821 DOI: 10.1088/1748-605x/aa91d9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Deep wounds in the gingiva caused by trauma or surgery require a rapid and robust healing of connective tissues. We propose utilizing gas-brushed nanofibers coated with collagen and fibrin for that purpose. Our hypotheses are that protein-coated nanofibers will: (i) attract and mobilize cells in various spatial orientations, and (ii) regulate the expression levels of specific extracellular matrix (ECM)-associated proteins, determining the initial conformational nature of dense and soft connective tissues. Gingival fibroblast monolayers and 3D spheroids were cultured on ECM substrate and covered with gas-blown poly-(DL-lactide-co-glycolide) (PLGA) nanofibers (uncoated/coated with collagen and fibrin). Cell attraction and rearrangement was followed by F-actin staining and confocal microscopy. Thicknesses of the cell layers, developed within the nanofibers, were quantified by ImageJ software. The expression of collagen1α1 chain (Col1α1), fibronectin, and metalloproteinase 2 (MMP2) encoding genes was determined by quantitative reverse transcription analysis. Collagen- and fibrin- coated nanofibers induced cell migration toward fibers and supported cellular growth within the scaffolds. Both proteins affected the spatial rearrangement of fibroblasts by favoring packed cell clusters or intermittent cell spreading. These cell arrangements resembled the structural characteristic of dense and soft connective tissues, respectively. Within three days of incubation, fibroblast spheroids interacted with the fibers, and grew robustly by increasing their thickness compared to monolayers. While the ECM key components, such as fibronectin and MMP2 encoding genes, were expressed in both protein groups, Col1α1 was predominantly expressed in bundled fibroblasts grown on collagen fibers. This enhanced expression of collagen1 is typical for dense connective tissue. Based on results of this study, our gas-blown, collagen- and fibrin-coated PLGA nanofibers are viable candidates for engineering soft and dense connective tissues with the required structural characteristics and functions needed for wound healing applications. Rapid regeneration of these layers should enhance healing of open wounds in a harsh oral environment.
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Affiliation(s)
- Gili Kaufman
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD 20899, United States of America
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254
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Nootem J, Chalorak P, Meemon K, Mingvanish W, Pratumyot K, Ruckthong L, Srisuwannaket C, Niamnont N. Electrospun cellulose acetate doped with astaxanthin derivatives from Haematococcus pluvialis for in vivo anti-aging activity. RSC Adv 2018; 8:37151-37158. [PMID: 35557819 PMCID: PMC9088889 DOI: 10.1039/c8ra08156e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 10/28/2018] [Indexed: 11/24/2022] Open
Abstract
This research aims to study the release, in vivo anti-aging activity against Caenorhabditis elegans and stability of astaxanthins in a crude acetone extract of Haematococcus pluvialis from electrospun cellulose acetate (CA) nanofibers. The content and 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) radical scavenging activity of astaxanthins in the crude extract were also determined. The content of astaxanthins was reported in terms of total carotenoid content (TCC) and found to be 10.75 ± 0.16 mg gcE−1. IC50 of DPPH radical scavenging activity for astaxanthins was 233.33 ± 4.18 μg mL−1. It has been well known that astaxanthins are very unstable under environmental conditions, so the electrospinning technique was used to enhance their stability. In order to fabricate CA nanofibers containing a crude acetone extract of H. pluvialis, various solvent systems and percent loading of the crude acetone extract were studied. The optimal solvent system for fabrication of CA nanofibers was the acetone/dimethylformamide (DMF) system (2 : 1 v/v) with incorporation of 0.25% v/v Tween80, resulting in good morphology of CA nanofibers with av. 420 nm diameter. The loading efficiency (%) of the crude astaxanthins extract was 5% w/w of CA. With regard to the results of the in vivo oxidative stress assay, C. elegans pre-treated with 200 μg mL−1 of the crude extract had a survival percent of 56 after administration of 250 mM of paraquat for 8 h. Under phosphate-buffered saline (pH 7.4) containing 10% v/v acetone, the release of astaxanthins from the CA nanofibers loaded with the crude extract exhibited a prolonged profile. The stability of astaxanthins in electrospun CA nanofibers was examined using the freeze–thaw cycle testing through a DPPH radical scavenging assay. It was found that their stability was significantly different (P < 0.05) after the 12th freeze–thaw cycle compared with the crude extract. The astaxanthin derivatives loaded CA fibers enhanced the percentage survival of C. elegans upto 56.17% after adding paraquat and it stability increased with 1.7 times by using DPPH scavenging assay.![]()
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Affiliation(s)
- Jukkrit Nootem
- Organic Synthesis, Electrochemistry & Natural Product Research Unit
- Department of Chemistry
- Faculty of Science
- King Mongkut's University of Technology Thonburi
- Bangkok
| | - Pawanrat Chalorak
- Department of Anatomy
- Faculty of Science
- Mahidol University
- Bangkok
- Thailand
| | - Krai Meemon
- Department of Anatomy
- Faculty of Science
- Mahidol University
- Bangkok
- Thailand
| | - Withawat Mingvanish
- Organic Synthesis, Electrochemistry & Natural Product Research Unit
- Department of Chemistry
- Faculty of Science
- King Mongkut's University of Technology Thonburi
- Bangkok
| | - Kornkanya Pratumyot
- Organic Synthesis, Electrochemistry & Natural Product Research Unit
- Department of Chemistry
- Faculty of Science
- King Mongkut's University of Technology Thonburi
- Bangkok
| | - Leela Ruckthong
- Organic Synthesis, Electrochemistry & Natural Product Research Unit
- Department of Chemistry
- Faculty of Science
- King Mongkut's University of Technology Thonburi
- Bangkok
| | - Choladda Srisuwannaket
- Organic Synthesis, Electrochemistry & Natural Product Research Unit
- Department of Chemistry
- Faculty of Science
- King Mongkut's University of Technology Thonburi
- Bangkok
| | - Nakorn Niamnont
- Organic Synthesis, Electrochemistry & Natural Product Research Unit
- Department of Chemistry
- Faculty of Science
- King Mongkut's University of Technology Thonburi
- Bangkok
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255
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Li X, Yan S, Dai J, Lu Y, Wang Y, Sun M, Gong J, Yao Y. Human lung epithelial cells A549 epithelial-mesenchymal transition induced by PVA/Collagen nanofiber. Colloids Surf B Biointerfaces 2017; 162:390-397. [PMID: 29245116 DOI: 10.1016/j.colsurfb.2017.12.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 11/28/2017] [Accepted: 12/09/2017] [Indexed: 11/19/2022]
Abstract
Epithelial-mesenchymal transition (EMT) is a process by which epithelial cells lose their cell-cell contact to become mesenchymal stem cells, which is important on development and embryogenesis, wound healing, and cancer metastasis. This research aims to investigate the effect of topological cue as modulating factor on the EMT by tuning the diameter of electrospinning nanofiber. The cell-nanofiber interaction between human lung epithelial cell A549 and electrospinning nanofibers composed of polyvinyl alcohol (PVA) and type I collagen were investigated. The electrospinning of regenerated PVA/Collagen nanofibers were performed with water/acetic acid as a spinning solvent and glutaraldehyde as a chemical cross-linker. Parameterization on concentration, applied voltage and feeding rate was finalized to generate smooth nanofibers with good homogeneity. The scanning electron microscopy result demonstrated that A549 cell appropriately achieved extended morphology by the filopodia attaching to the surface of the nanofibrous mats. When the diameter changed from 90nm to 240nm, the A549 cell was correspondingly express varied EMT related genes. Gene expression analysis was conducted by qPCR using three typical markers for detecting EMT: N-cadherin (NCad), Vimentin (Vim), and Fibronectin (Fib). An increasing expression pattern was observed on cell culturing on 170nm sample with respect to cell cultured on 90nm and 240nm. This result indicated the 170nm PVA/Collagen nanofibers induce A549 cells to process epithelial-mesenchymal transition more seriously than those on 90nm or 240nm.
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Affiliation(s)
- Xiuchun Li
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, China
| | - Shanshan Yan
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, China; Shanghai Institute of Ceramics, Chinese Academy of Science, 1295 Dingxi Road, Changning, Shanghai 200050, China
| | - Jing Dai
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, China; Shanghai Institute of Ceramics, Chinese Academy of Science, 1295 Dingxi Road, Changning, Shanghai 200050, China
| | - Yi Lu
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, China
| | - Yiqun Wang
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, China; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Man Sun
- School of Life Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, China
| | - Jinkang Gong
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, China.
| | - Yuan Yao
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, China.
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256
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van Tilborg E, van Kammen CM, de Theije CGM, van Meer MPA, Dijkhuizen RM, Nijboer CH. A quantitative method for microstructural analysis of myelinated axons in the injured rodent brain. Sci Rep 2017; 7:16492. [PMID: 29184182 PMCID: PMC5705703 DOI: 10.1038/s41598-017-16797-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/14/2017] [Indexed: 01/08/2023] Open
Abstract
MRI studies (e.g. using diffusion tensor imaging) revealed that injury to white matter tracts, as observed in for instance perinatal white matter injury and multiple sclerosis, leads to compromised microstructure of myelinated axonal tracts. Alterations in white matter microstructure are also present in a wide range of neurological disorders including autism-spectrum disorders, schizophrenia and ADHD. Whereas currently myelin quantity measures are often used in translational animal models of white matter disease, it can be an important valuable addition to study the microstructural organization of myelination patterns in greater detail. Here, we describe methods to extensively study the microstructure of cortical myelination by immunostaining for myelin. To validate these methods, we carefully analyzed the organization of myelinated axons running from the external capsule towards the outer layers of the cortex in three rodent models of neonatal brain injury and in an adult stroke model, that have all been associated with myelination impairments. This unique, relatively easy and sensitive methodology can be applied to study subtle differences in myelination patterns in animal models in which aberrations in myelination integrity are suspected. Importantly, the described methods can be applied to determine efficacy of novel experimental treatments on microstructural organization of cortical myelination.
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Affiliation(s)
- Erik van Tilborg
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Caren M van Kammen
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Caroline G M de Theije
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Maurits P A van Meer
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Department of Medical Microbiology & Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | - Rick M Dijkhuizen
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Cora H Nijboer
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
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257
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Bajcsy P, Yoon S, Florczyk SJ, Hotaling NA, Simon M, Szczypinski PM, Schaub NJ, Simon CG, Brady M, Sriram RD. Modeling, validation and verification of three-dimensional cell-scaffold contacts from terabyte-sized images. BMC Bioinformatics 2017; 18:526. [PMID: 29183290 PMCID: PMC5706418 DOI: 10.1186/s12859-017-1928-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 11/06/2017] [Indexed: 01/28/2023] Open
Abstract
Background Cell-scaffold contact measurements are derived from pairs of co-registered volumetric fluorescent confocal laser scanning microscopy (CLSM) images (z-stacks) of stained cells and three types of scaffolds (i.e., spun coat, large microfiber, and medium microfiber). Our analysis of the acquired terabyte-sized collection is motivated by the need to understand the nature of the shape dimensionality (1D vs 2D vs 3D) of cell-scaffold interactions relevant to tissue engineers that grow cells on biomaterial scaffolds. Results We designed five statistical and three geometrical contact models, and then down-selected them to one from each category using a validation approach based on physically orthogonal measurements to CLSM. The two selected models were applied to 414 z-stacks with three scaffold types and all contact results were visually verified. A planar geometrical model for the spun coat scaffold type was validated from atomic force microscopy images by computing surface roughness of 52.35 nm ±31.76 nm which was 2 to 8 times smaller than the CLSM resolution. A cylindrical model for fiber scaffolds was validated from multi-view 2D scanning electron microscopy (SEM) images. The fiber scaffold segmentation error was assessed by comparing fiber diameters from SEM and CLSM to be between 0.46% to 3.8% of the SEM reference values. For contact verification, we constructed a web-based visual verification system with 414 pairs of images with cells and their segmentation results, and with 4968 movies with animated cell, scaffold, and contact overlays. Based on visual verification by three experts, we report the accuracy of cell segmentation to be 96.4% with 94.3% precision, and the accuracy of cell-scaffold contact for a statistical model to be 62.6% with 76.7% precision and for a geometrical model to be 93.5% with 87.6% precision. Conclusions The novelty of our approach lies in (1) representing cell-scaffold contact sites with statistical intensity and geometrical shape models, (2) designing a methodology for validating 3D geometrical contact models and (3) devising a mechanism for visual verification of hundreds of 3D measurements. The raw and processed data are publicly available from https://isg.nist.gov/deepzoomweb/data/ together with the web -based verification system. Electronic supplementary material The online version of this article (doi:10.1186/s12859-017-1928-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Peter Bajcsy
- Information Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA.
| | - Soweon Yoon
- Information Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA.,Dakota Consulting Inc, Silver Spring, MD, USA
| | - Stephen J Florczyk
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA.,Department of Materials Science & Engineering, University of Central Florida, Orlando, FL, USA
| | - Nathan A Hotaling
- National Eye Institute, National Institute of Health, Bethesda, MD, USA.
| | - Mylene Simon
- Information Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | | | - Nicholas J Schaub
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Carl G Simon
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Mary Brady
- Information Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Ram D Sriram
- Information Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
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258
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Janion-Sadowska A, Natorska J, Siudut J, Zabczyk M, Stanisz A, Undas A. Plasma fibrin clot properties in the G20210A prothrombin mutation carriers following venous thromboembolism: the effect of rivaroxaban. Thromb Haemost 2017; 117:1739-1749. [DOI: 10.1160/th17-01-0060] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 06/11/2017] [Indexed: 11/05/2022]
Abstract
SummaryWe sought to investigate whether the G20210A prothrombin mutation modifies plasma fibrin clot properties in patients after venous thromboembolism (VTE) and how rivaroxaban treatment affects these alterations. We studied 34 prothrombin mutation heterozygous carriers and sex- and age-matched 34 non-carriers, all at least three months since the first VTE episode, before and during treatment with rivaroxaban. Clot permeability (Ks) and clot lysis time (CLT) with or without elimination of thrombin activatable fibrinolysis inhibitor (TAFI) were assessed at baseline, 2–6 hours (h) after and 20–25 h after intake of rivaroxaban (20 mg/day). At baseline, the prothrombin mutation group formed denser clots (Ks −12 %, p=0.0006) and had impaired fibrinolysis (CLT +14 %, p=0.004, and CLT-TAFI +13 %, p=0.03) compared with the no mutation group and were similar to those observed in 15 healthy unrelated prothrombin mutation carriers. The G20210A prothrombin mutation was the independent predictor for Ks and CLT before rivaroxaban intake. At 2–6 h after rivaroxaban intake, clot properties improved in both G20210A carriers and non-carriers (Ks +38 %, and +37 %, CLT −25 % and −25 %, CLT-TAFI −20 % and −24 %, respectively, all p<0.001), but those parameters were worse in the prothrombin mutation group (Ks −12.8 %, CLT +17 %, CLT-TAFI +13 %, all p<0.001). Rivaroxaban concentration correlated with fibrin clot properties. After 20–25 h since rivaroxaban intake most clot properties returned to baseline. Rivaroxaban-related differences in clot structure were confirmed by scanning electron microscopy images. In conclusion, rivaroxaban treatment, though improves fibrin clot properties, cannot abolish more prothrombotic fibrin clot phenotype observed in prothrombin mutation carriers following VTE.
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259
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Preparation, characterization and hydrolytic degradation of PLA/PCL co-mingled nanofibrous mats prepared via dual-jet electrospinning. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.09.016] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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260
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Antibiotic incorporation in jet-sprayed nanofibrillar biodegradable scaffolds for wound healing. Int J Pharm 2017; 532:802-812. [DOI: 10.1016/j.ijpharm.2017.08.117] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 08/11/2017] [Accepted: 08/28/2017] [Indexed: 12/12/2022]
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261
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Liverani L, Boccardi E, Beltrán AM, Boccaccini AR. Incorporation of Calcium Containing Mesoporous (MCM-41-Type) Particles in Electrospun PCL Fibers by Using Benign Solvents. Polymers (Basel) 2017; 9:polym9100487. [PMID: 30965790 PMCID: PMC6418919 DOI: 10.3390/polym9100487] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/19/2017] [Accepted: 09/26/2017] [Indexed: 02/07/2023] Open
Abstract
The electrospinning technique is a versatile method for the production of fibrous scaffolds able to resemble the morphology of the native extra cellular matrix. In the present paper, electrospinning is used to fabricate novel SiO2 particles (type MCM-41) containing poly(epsilon-caprolactone) (PCL) fibers. The main aims of the present work are both the optimization of the particle synthesis and the fabrication of composite fibers, obtained using benign solvents, suitable as drug delivery systems and scaffolds for soft tissue engineering applications. The optimized synthesis and characterization of calcium-containing MCM-41 particles are reported. Homogeneous bead-free composite electrospun mats were obtained by using acetic acid and formic acid as solvents; neat PCL electrospun mats were used as control. Initially, an optimization of the electrospinning environmental parameters, like relative humidity, was performed. The obtained composite nanofibers were characterized from the morphological, chemical and mechanical points of view, the acellular bioactivity of the composite nanofibers was also investigated. Positive results were obtained in terms of mesoporous particle incorporation in the fibers and no significant differences in terms of average fiber diameter were detected between the neat and composite electrospun fibers. Even if the Ca-containing MCM-41 particles are bioactive, this property is not preserved in the composite fibers. In fact, during the bioactivity assessment, the particles were released confirming the potential application of the composite fibers as a drug delivery system. Preliminary in vitro tests with bone marrow stromal cells were performed to investigate cell adhesion on the fabricated composite mats, the positive obtained results confirmed the suitability of the composite fibers as scaffolds for soft tissue engineering.
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Affiliation(s)
- Liliana Liverani
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
| | - Elena Boccardi
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
| | - Ana Maria Beltrán
- Institute de Ciencia de Materiales de Sevilla (ICMS), CSIC-Universidad de Sevilla, Seville 41092, Spain.
- Department of Engineering and Materials Science, University of Seville, Sevilla 41092, Spain.
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
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262
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van Tilborg E, Achterberg EJM, van Kammen CM, van der Toorn A, Groenendaal F, Dijkhuizen RM, Heijnen CJ, Vanderschuren LJMJ, Benders MNJL, Nijboer CHA. Combined fetal inflammation and postnatal hypoxia causes myelin deficits and autism-like behavior in a rat model of diffuse white matter injury. Glia 2017; 66:78-93. [PMID: 28925578 PMCID: PMC5724703 DOI: 10.1002/glia.23216] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 08/16/2017] [Accepted: 08/21/2017] [Indexed: 12/12/2022]
Abstract
Diffuse white matter injury (WMI) is a serious problem in extremely preterm infants, and is associated with adverse neurodevelopmental outcome, including cognitive impairments and an increased risk of autism-spectrum disorders. Important risk factors include fetal or perinatal inflammatory insults and fluctuating cerebral oxygenation. However, the exact mechanisms underlying diffuse WMI are not fully understood and no treatment options are currently available. The use of clinically relevant animal models is crucial to advance knowledge on the pathophysiology of diffuse WMI, allowing the definition of novel therapeutic targets. In the present study, we developed a multiple-hit animal model of diffuse WMI by combining fetal inflammation and postnatal hypoxia in rats. We characterized the effects on white matter development and functional outcome by immunohistochemistry, MRI and behavioral paradigms. Combined fetal inflammation and postnatal hypoxia resulted in delayed cortical myelination, microglia activation and astrogliosis at P18, together with long-term changes in oligodendrocyte maturation as observed in 10 week old animals. Furthermore, rats with WMI showed impaired motor performance, increased anxiety and signs of autism-like behavior, i.e. reduced social play behavior and increased repetitive grooming. In conclusion, the combination of fetal inflammation and postnatal hypoxia in rats induces a pattern of brain injury and functional impairments that closely resembles the clinical situation of diffuse WMI. This animal model provides the opportunity to elucidate pathophysiological mechanisms underlying WMI, and can be used to develop novel treatment options for diffuse WMI in preterm infants.
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Affiliation(s)
- Erik van Tilborg
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht, 3584EA, The Netherlands
| | - E J Marijke Achterberg
- Department of Animals in Science and Society, Division of Behavioural Neuroscience, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584CM, The Netherlands
| | - Caren M van Kammen
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht, 3584EA, The Netherlands
| | - Annette van der Toorn
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht, 3584 CJ, The Netherlands
| | - Floris Groenendaal
- Department of Neonatology, University Medical Center Utrecht, Utrecht, 3584EA, The Netherlands
| | - Rick M Dijkhuizen
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht, 3584 CJ, The Netherlands
| | - Cobi J Heijnen
- Laboratory of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, Texas, 77030
| | - Louk J M J Vanderschuren
- Department of Animals in Science and Society, Division of Behavioural Neuroscience, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584CM, The Netherlands
| | - Manon N J L Benders
- Department of Neonatology, University Medical Center Utrecht, Utrecht, 3584EA, The Netherlands
| | - Cora H A Nijboer
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht, 3584EA, The Netherlands
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263
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Matrisome Profiling During Intervertebral Disc Development And Ageing. Sci Rep 2017; 7:11629. [PMID: 28912585 PMCID: PMC5599645 DOI: 10.1038/s41598-017-11960-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 09/01/2017] [Indexed: 12/19/2022] Open
Abstract
Intervertebral disc (IVD) degeneration is often the cause of low back pain. Degeneration occurs with age and is accompanied by extracellular matrix (ECM) depletion, culminating in nucleus pulpous (NP) extrusion and IVD destruction. The changes that occur in the disc with age have been under investigation. However, a thorough study of ECM profiling is needed, to better understand IVD development and age-associated degeneration. As so, iTRAQ LC-MS/MS analysis of foetus, young and old bovine NPs, was performed to define the NP matrisome. The enrichment of Collagen XII and XIV in foetus, Fibronectin and Prolargin in elder NPs and Collagen XI in young ones was independently validated. This study provides the first matrisome database of healthy discs during development and ageing, which is key to determine the pathways and processes that maintain disc homeostasis. The factors identified may help to explain age-associated IVD degeneration or constitute putative effectors for disc regeneration.
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264
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Electrospinning of cationically polymerized epoxy/polycaprolactone blends to obtain shape memory fibers (SMF). Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.07.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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265
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Unveiling Polyindole: Freestanding As-electrospun Polyindole Nanofibers and Polyindole/Carbon Nanotubes Composites as Enhanced Electrodes for Flexible All-solid-state Supercapacitors. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.07.038] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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266
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Santos de Oliveira Junior M, Manzolli Rodrigues BV, Marcuzzo JS, Guerrini LM, Baldan MR, Rezende MC. A statistical approach to evaluate the oxidative process of electrospun polyacrylonitrile ultrathin fibers. J Appl Polym Sci 2017. [DOI: 10.1002/app.45458] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Mauro Santos de Oliveira Junior
- Instituto de Ciência e Tecnologia; Universidade Federal de São Paulo (UNIFESP); Rua Talim 330 São José dos Campos SP 12231-280 Brasil
| | - Bruno Vinícius Manzolli Rodrigues
- Laboratório de Nanotecnologia Biomédica; Universidade Brasil; Rua Carolina Fonseca 235 São Paulo SP 08230-030 Brasil
- Instituto Tecnológico de Aeronáutica (ITA-DCTA); Centro de Ciência e Tecnologia de Plasmas e Materiais-PlasMat; Praça Marechal Eduardo Gomes, 50 São José dos Campos SP 12228-900 Brasil
| | - Jossano Saldanha Marcuzzo
- Instituto Nacional de Pesquisas Espaciais; Laboratório Associado de Sensores e Materiais; Av. dos Astronautas 1758 São José dos Campos SP 12227-010 Brasil
| | - Lília Müller Guerrini
- Instituto de Ciência e Tecnologia; Universidade Federal de São Paulo (UNIFESP); Rua Talim 330 São José dos Campos SP 12231-280 Brasil
| | - Maurício Ribeiro Baldan
- Instituto Nacional de Pesquisas Espaciais; Laboratório Associado de Sensores e Materiais; Av. dos Astronautas 1758 São José dos Campos SP 12227-010 Brasil
| | - Mirabel Cerqueira Rezende
- Instituto de Ciência e Tecnologia; Universidade Federal de São Paulo (UNIFESP); Rua Talim 330 São José dos Campos SP 12231-280 Brasil
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267
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Grant R, Hay DC, Callanan A. A Drug-Induced Hybrid Electrospun Poly-Capro-Lactone: Cell-Derived Extracellular Matrix Scaffold for Liver Tissue Engineering. Tissue Eng Part A 2017; 23:650-662. [PMID: 28437180 DOI: 10.1089/ten.tea.2016.0419] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Liver transplant is the only treatment option for patients with end-stage liver failure, however, there are too few donor livers available for transplant. Whole organ tissue engineering presents a potential solution to the problem of rapidly escalating donor liver shortages worldwide. A major challenge for liver tissue engineers is the creation of a hepatocyte microenvironment; a niche in which liver cells can survive and function optimally. While polymers and decellularized tissues pose an attractive option for scaffold manufacturing, neither alone has thus far proved sufficient. This study exploited cell's native extracellular matrix (ECM) producing capabilities using two different histone deacetylase inhibitors, and combined these with the customizability and reproducibility of electrospun polymer scaffolds to produce a "best of both worlds" niche microenvironment for hepatocytes. The resulting hybrid poly-capro-lactone (PCL)-ECM scaffolds were validated using HepG2 hepatocytes. The hybrid PCL-ECM scaffolds maintained hepatocyte growth and function, as evidenced by metabolic activity and DNA quantitation. Mechanical testing revealed little significant difference between scaffolds, indicating that cells were responding to a biochemical and topographical profile rather than mechanical changes. Immunohistochemistry showed that the biochemical profile of the drug-derived and nondrug-derived ECMs differed in ratio of Collagen I, Laminin, and Fibronectin. Furthermore, the hybrid PCL-ECM scaffolds influence the gene expression profile of the HepG2s drastically; with expression of Albumin, Cytochrome P450 Family 1 Subfamily A Polypeptide 1, Cytochrome P450 Family 1 Subfamily A Polypeptide 2, Cytochrome P450 Family 3 Subfamily A Polypeptide 4, Fibronectin, Collagen I, and Collagen IV undergoing significant changes. Our results demonstrate that drug-induced hybrid PCL-ECM scaffolds provide a viable, translatable platform for creating a niche microenvironment for hepatocytes, supporting in vivo phenotype and function. These scaffolds offer great potential for tissue engineering and regenerative medicine strategies for whole organ tissue engineering.
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Affiliation(s)
- Rhiannon Grant
- 1 Institute for Bioengineering, School of Engineering, University of Edinburgh , Edinburgh, United Kingdom
| | - David C Hay
- 2 MRC Scottish Centre for Regenerative Medicine, University of Edinburgh , Edinburgh, United Kingdom
| | - Anthony Callanan
- 1 Institute for Bioengineering, School of Engineering, University of Edinburgh , Edinburgh, United Kingdom
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268
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Pavlova ER, Bagrov DV, Khramova YV, Klinov DV, Shaitan KV. Nuclei deformation in HaCaT keratinocytes cultivated on aligned fibrous substrates. ACTA ACUST UNITED AC 2017. [DOI: 10.3103/s0096392517020043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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269
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Mayorca-Guiliani AE, Madsen CD, Cox TR, Horton ER, Venning FA, Erler JT. ISDoT: in situ decellularization of tissues for high-resolution imaging and proteomic analysis of native extracellular matrix. Nat Med 2017; 23:890-898. [PMID: 28604702 DOI: 10.1038/nm.4352] [Citation(s) in RCA: 134] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 05/11/2017] [Indexed: 12/15/2022]
Abstract
The extracellular matrix (ECM) is a master regulator of cellular phenotype and behavior. It has a crucial role in both normal tissue homeostasis and disease pathology. Here we present a fast and efficient approach to enhance the study of ECM composition and structure. Termed in situ decellularization of tissues (ISDoT), it allows whole organs to be decellularized, leaving native ECM architecture intact. These three-dimensional decellularized tissues can be studied using high-resolution fluorescence and second harmonic imaging, and can be used for quantitative proteomic interrogation of the ECM. Our method is superior to other methods tested in its ability to preserve the structural integrity of the ECM, facilitate high-resolution imaging and quantitatively detect ECM proteins. In particular, we performed high-resolution sub-micron imaging of matrix topography in normal tissue and over the course of primary tumor development and progression to metastasis in mice, providing the first detailed imaging of the metastatic niche. These data show that cancer-driven ECM remodeling is organ specific, and that it is accompanied by comprehensive changes in ECM composition and topological structure. We also describe differing patterns of basement-membrane organization surrounding different types of blood vessels in healthy and diseased tissues. The ISDoT procedure allows for the study of native ECM structure under normal and pathological conditions in unprecedented detail.
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Affiliation(s)
| | - Chris D Madsen
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen (UCPH), Copenhagen, Denmark.,Department of Laboratory Medicine, Division of Translational Cancer Research, Lund University, Lund, Sweden
| | - Thomas R Cox
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen (UCPH), Copenhagen, Denmark.,The Garvan Institute of Medical Research and The Kinghorn Cancer Centre, Cancer Division, St Vincent's Clinical School, Faculty of Medicine, University of New South Wales Sydney (UNSW Sydney), Sydney, New South Wales, Australia
| | - Edward R Horton
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen (UCPH), Copenhagen, Denmark
| | - Freja A Venning
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen (UCPH), Copenhagen, Denmark
| | - Janine T Erler
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen (UCPH), Copenhagen, Denmark
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270
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Scaffaro R, Lopresti F, Sutera A, Botta L, Fontana RM, Gallo G. Plasma modified PLA electrospun membranes for actinorhodin production intensification in Streptomyces coelicolor immobilized-cell cultivations. Colloids Surf B Biointerfaces 2017; 157:233-241. [PMID: 28599184 DOI: 10.1016/j.colsurfb.2017.05.060] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 05/15/2017] [Accepted: 05/23/2017] [Indexed: 12/29/2022]
Abstract
Most of industrially relevant bioproducts are produced by submerged cultivations of actinomycetes. The immobilization of these Gram-positive filamentous bacteria on suitable porous supports may prevent mycelial cell-cell aggregation and pellet formation which usually negatively affect actinomycete submerged cultivations, thus, resulting in an improved biosynthetic capability. In this work, electrospun polylactic acid (PLA) membranes, subjected or not to O2-plasma treatment (PLA-plasma), were used as support for immobilized-cell submerged cultivations of Streptomyces coelicolor M145. This strain produces different bioactive compounds, including the blue-pigmented actinorhodin (ACT) and red-pigmented undecylprodigiosin (RED), and constitutes a model for the study of antibiotic-producing actinomycetes. Wet contact angles and X-ray photoelectron spectroscopy analysis confirmed the increased wettability of PLA-plasma due to the formation of polar functional groups such as carboxyl and hydroxyl moieties. Scanning electron microscope observations, carried out at different incubation times, revealed that S. coelicolor immobilized-cells created a dense "biofilm-like" mycelial network on both kinds of PLA membranes. Cultures of S. coelicolor immobilized-cells on PLA or PLA-plasma membranes produced higher biomass (between 1.5 and 2 fold) as well as higher levels of RED and ACT than planktonic cultures. In particular, cultures of immobilized-cells on PLA and PLA-plasma produced comparable levels of RED that were approximatively 4 and 5 fold higher than those produced by planktonic cultures, respectively. In contrast, levels of ACT produced by immobilized-cell cultures on PLA and PLA-plasma were different, being 5 and 10 fold higher than those of planktonic cultures, respectively. Therefore, this is study demonstrated the positive influence of PLA membrane on growth and secondary metabolite production in S. coelicolor and also revealed that O2-plasma treated PLA membranes specifically promoted higher ACT production than not treated membranes.
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Affiliation(s)
- Roberto Scaffaro
- University of Palermo, Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Viale delle Scienze Ed. 6, RU INSTM, 90128 Palermo, Italy.
| | - Francesco Lopresti
- University of Palermo, Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Viale delle Scienze Ed. 6, RU INSTM, 90128 Palermo, Italy
| | - Alberto Sutera
- University of Palermo, Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Viale delle Scienze Ed. 16, 90128 Palermo, Italy
| | - Luigi Botta
- University of Palermo, Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Viale delle Scienze Ed. 6, RU INSTM, 90128 Palermo, Italy
| | - Rosa Maria Fontana
- University of Palermo, Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Viale delle Scienze Ed. 16, 90128 Palermo, Italy
| | - Giuseppe Gallo
- University of Palermo, Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Viale delle Scienze Ed. 16, 90128 Palermo, Italy
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271
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Abarzúa-Illanes PN, Padilla C, Ramos A, Isaacs M, Ramos-Grez J, Olguín HC, Valenzuela LM. Improving myoblast differentiation on electrospun poly(ε-caprolactone) scaffolds. J Biomed Mater Res A 2017; 105:2241-2251. [DOI: 10.1002/jbm.a.36091] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 03/12/2017] [Accepted: 04/14/2017] [Indexed: 01/11/2023]
Affiliation(s)
- Phammela N. Abarzúa-Illanes
- Department of Chemical and Bioprocess Engineering; School of Engineering, Pontificia Universidad Católica de Chile; Santiago Chile
| | - Cristina Padilla
- Department of Chemical and Bioprocess Engineering; School of Engineering, Pontificia Universidad Católica de Chile; Santiago Chile
| | - Andrea Ramos
- Programa de Química, Facultad de Ciencias Básicas, Universidad del Atlántico; Barranquilla Colombia
| | - Mauricio Isaacs
- Department of Inorganic Chemistry School of Chemistry; Pontificia Universidad Católica de Chile; Santiago Chile
- Research Center for Nanotechnology and Advanced Materials “Cien-UC”, Pontificia Universidad Católica de Chile; Santiago Chile
| | - Jorge Ramos-Grez
- Research Center for Nanotechnology and Advanced Materials “Cien-UC”, Pontificia Universidad Católica de Chile; Santiago Chile
- Department of Mechanical and Metallurgical Engineering, School of Engineering; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Hugo C. Olguín
- Department of Cellular and Molecular Biology; School of Biological Sciences, Pontificia Universidad Católica de Chile; Santiago Chile
| | - Loreto M. Valenzuela
- Department of Chemical and Bioprocess Engineering; School of Engineering, Pontificia Universidad Católica de Chile; Santiago Chile
- Research Center for Nanotechnology and Advanced Materials “Cien-UC”, Pontificia Universidad Católica de Chile; Santiago Chile
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272
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Yoon JG, Song J. Adopting automated image analysis tool for fibrin network: Can we obtain clot properties for practical application? Int J Lab Hematol 2017; 39:e121-e123. [PMID: 28500625 DOI: 10.1111/ijlh.12689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J G Yoon
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - J Song
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
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273
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Lewis DM, Tang V, Jain N, Isser A, Xia Z, Gerecht S. Collagen Fiber Architecture Regulates Hypoxic Sarcoma Cell Migration. ACS Biomater Sci Eng 2017; 4:400-409. [DOI: 10.1021/acsbiomaterials.7b00056] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | | | | | | | - Zhiyong Xia
- The Johns Hopkins University, Applied Physics
Laboratory, Laurel, Maryland 20723, United States
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274
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Sylman JL, Daalkhaijav U, Zhang Y, Gray EM, Farhang PA, Chu TT, Zilberman-Rudenko J, Puy C, Tucker EI, Smith SA, Morrissey JH, Walker TW, Nan XL, Gruber A, McCarty OJT. Differential Roles for the Coagulation Factors XI and XII in Regulating the Physical Biology of Fibrin. Ann Biomed Eng 2017; 45:1328-1340. [PMID: 27933406 PMCID: PMC5398924 DOI: 10.1007/s10439-016-1771-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/30/2016] [Indexed: 01/03/2023]
Abstract
In the contact activation pathway of the coagulation, zymogen factor XII (FXII) is converted to FXIIa, which triggers activation of FXI leading to the activation of FIX and subsequent thrombin generation and fibrin formation. Feedback activation of FXI by thrombin has been shown to promote thrombin generation in a FXII-independent manner and FXIIa can bypass FXI to directly activate FX and prothrombin in the presence of highly negatively charged molecules, such as long-chain polyphosphates (LC polyP). We sought to determine whether activation of FXII or FXI differentially regulate the physical biology of fibrin formation. Fibrin formation was initiated with tissue factor, ellagic acid (EA), or LC polyP in the presence of inhibitors of FXI and FXII. Our data demonstrated that inhibition of FXI decreased the rate of fibrin formation and fiber network density, and increased the fibrin network strength and rate of fibrinolysis when gelation was initiated via the contact activation pathway with EA. FXII inhibition decreased the fibrin formation and fibrin density, and increased the fibrinolysis rate only when fibrin formation was initiated via the contact activation pathway with LC polyP. Overall, we demonstrate that inhibition of FXI and FXII distinctly alter the biophysical properties of fibrin.
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Affiliation(s)
- Joanna L Sylman
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA.
| | - Uranbileg Daalkhaijav
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, USA
| | - Ying Zhang
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
| | - Elliot M Gray
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
| | - Parsa A Farhang
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
| | - Tiffany T Chu
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
| | - Jevgenia Zilberman-Rudenko
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
| | - Cristina Puy
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
| | - Erik I Tucker
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
- Aronora, Inc., Portland, OR, USA
| | - Stephanie A Smith
- Department of Biochemistry, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - James H Morrissey
- Department of Biochemistry, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Travis W Walker
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, USA
| | - Xiaolin L Nan
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
| | - András Gruber
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
- Aronora, Inc., Portland, OR, USA
| | - Owen J T McCarty
- Biomedical Engineering, School of Medicine, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR, 97239, USA
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275
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Williams TE, Ushizima D, Zhu C, Anders A, Milliron DJ, Helms BA. Nearest-neighbour nanocrystal bonding dictates framework stability or collapse in colloidal nanocrystal frameworks. Chem Commun (Camb) 2017; 53:4853-4856. [PMID: 28421213 DOI: 10.1039/c6cc10183f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Block copolymers serve as architecture-directing agents for the assembly of colloidal nanocrystals into a variety of mesoporous solids. Here we report the fundamental order-disorder transition in such assemblies, which yield, on one hand, ordered colloidal nanocrystals frameworks or, alternatively, disordered mesoporous nanocrystal films. Our determination of the order-disorder transition is based on extensive image analysis of films after thermal processing. The number of nearest-nanocrystal neighbours emerges as a critical parameter dictating assembly outcomes, which is in turn determined by the nanocrystal volume fraction (fNC). We also identify the minimum fNC needed to support the structure against collapse.
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Affiliation(s)
- Teresa E Williams
- Graduate Group in Applied Science and Technology, University of California-Berkeley, Berkeley, CA 94720, USA
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276
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Strobel HA, Calamari EL, Beliveau A, Jain A, Rolle MW. Fabrication and characterization of electrospun polycaprolactone and gelatin composite cuffs for tissue engineered blood vessels. J Biomed Mater Res B Appl Biomater 2017; 106:817-826. [DOI: 10.1002/jbm.b.33871] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 02/02/2017] [Accepted: 02/13/2017] [Indexed: 01/30/2023]
Affiliation(s)
- Hannah A. Strobel
- Department of Biomedical Engineering; Worcester Polytechnic Institute; Worcester Massachusetts
| | - Elizabeth L. Calamari
- Department of Biomedical Engineering; Worcester Polytechnic Institute; Worcester Massachusetts
| | - Alexander Beliveau
- Department of Biomedical Engineering; Worcester Polytechnic Institute; Worcester Massachusetts
| | - Anjana Jain
- Department of Biomedical Engineering; Worcester Polytechnic Institute; Worcester Massachusetts
| | - Marsha W. Rolle
- Department of Biomedical Engineering; Worcester Polytechnic Institute; Worcester Massachusetts
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277
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Pavlova ER, Bagrov DV, Kopitsyna MN, Shchelokov DA, Bonartsev AP, Zharkova II, Mahina TK, Myshkina VL, Bonartseva GA, Shaitan KV, Klinov DV. Poly(hydroxybutyrate-co
-hydroxyvalerate) and bovine serum albumin blend prepared by electrospinning. J Appl Polym Sci 2017. [DOI: 10.1002/app.45090] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Elizaveta R. Pavlova
- Federal Research Clinical Center of Physical-Chemical Medicine of the Federal Medical and Biological Agency of Russia; 1a Malaya Pirogovskaya Street 119435 Moscow Russian Federation
- Moscow Institute of Physics and Technology; 9 Institutsky Per. 141700 Dolgoprudny Moscow Region Russian Federation
| | - Dmitry V. Bagrov
- Federal Research Clinical Center of Physical-Chemical Medicine of the Federal Medical and Biological Agency of Russia; 1a Malaya Pirogovskaya Street 119435 Moscow Russian Federation
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University; 119234 Leninskie gory, 1, Bld. 12 Moscow Russian Federation
| | - Maria N. Kopitsyna
- Bauman Moscow State Technical University; 105005 2-ya Baumanskaya Street, 5 Moscow Russian Federation
| | - Dmitry A. Shchelokov
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University; 119234 Leninskie gory, 1, Bld. 12 Moscow Russian Federation
| | - Anton P. Bonartsev
- A. N. Bach Institute of Biochemistry RAS; Leninsky Avenue, 33-2 119071 Moscow Russian Federation
| | - Irina I. Zharkova
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University; 119234 Leninskie gory, 1, Bld. 12 Moscow Russian Federation
| | - Tatiana K. Mahina
- A. N. Bach Institute of Biochemistry RAS; Leninsky Avenue, 33-2 119071 Moscow Russian Federation
| | - Vera L. Myshkina
- A. N. Bach Institute of Biochemistry RAS; Leninsky Avenue, 33-2 119071 Moscow Russian Federation
| | - Galina A. Bonartseva
- A. N. Bach Institute of Biochemistry RAS; Leninsky Avenue, 33-2 119071 Moscow Russian Federation
| | - Konstantin V. Shaitan
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University; 119234 Leninskie gory, 1, Bld. 12 Moscow Russian Federation
| | - Dmitry V. Klinov
- Federal Research Clinical Center of Physical-Chemical Medicine of the Federal Medical and Biological Agency of Russia; 1a Malaya Pirogovskaya Street 119435 Moscow Russian Federation
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278
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Turgay Y, Eibauer M, Goldman AE, Shimi T, Khayat M, Ben-Harush K, Dubrovsky-Gaupp A, Sapra KT, Goldman RD, Medalia O. The molecular architecture of lamins in somatic cells. Nature 2017; 543:261-264. [PMID: 28241138 DOI: 10.1038/nature21382] [Citation(s) in RCA: 276] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 01/11/2017] [Indexed: 01/13/2023]
Abstract
The nuclear lamina is a fundamental constituent of metazoan nuclei. It is composed mainly of lamins, which are intermediate filament proteins that assemble into a filamentous meshwork, bridging the nuclear envelope and chromatin. Besides providing structural stability to the nucleus, the lamina is involved in many nuclear activities, including chromatin organization, transcription and replication. However, the structural organization of the nuclear lamina is poorly understood. Here we use cryo-electron tomography to obtain a detailed view of the organization of the lamin meshwork within the lamina. Data analysis of individual lamin filaments resolves a globular-decorated fibre appearance and shows that A- and B-type lamins assemble into tetrameric filaments of 3.5 nm thickness. Thus, lamins exhibit a structure that is remarkably different from the other canonical cytoskeletal elements. Our findings define the architecture of the nuclear lamin meshworks at molecular resolution, providing insights into their role in scaffolding the nuclear lamina.
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Affiliation(s)
- Yagmur Turgay
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Matthias Eibauer
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Anne E Goldman
- Department of Cell and Molecular Biology, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Chicago, Illinois 60611, USA
| | - Takeshi Shimi
- Department of Cell and Molecular Biology, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Chicago, Illinois 60611, USA
| | - Maayan Khayat
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University, 84105 Beer-Sheva, Israel
| | - Kfir Ben-Harush
- Department of Chemical Engineering, Shamoon College of Engineering, Jabotinsky 84, 77245 Ashdod, Israel
| | - Anna Dubrovsky-Gaupp
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - K Tanuj Sapra
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Robert D Goldman
- Department of Cell and Molecular Biology, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Chicago, Illinois 60611, USA
| | - Ohad Medalia
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.,Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University, 84105 Beer-Sheva, Israel
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279
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Wu Y, Lin W, Hao H, Li J, Luo F, Tan H. Nanofibrous scaffold from electrospinning biodegradable waterborne polyurethane/poly(vinyl alcohol) for tissue engineering application. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:648-663. [PMID: 28277009 DOI: 10.1080/09205063.2017.1294041] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A series of nanofibrous scaffolds, free of organic solvents, are prepared by electrospinning biodegradable waterborne polyurethane (BWPU) emulsion blending with aqueous poly(vinyl alcohol)(PVA). Tuning the proration of BWPU to PVA, various nanofibers with diameter from 370 to 964 nm are obtained. Strong intermolecular interaction existing between them benefits to the electrospun of BWPU emulsion, which is demonstrated by dynamic thermomechanical analysis and Fourier transform infrared spectroscopy. The nontoxic nanofibrous scaffolds with porous structure, which is similar to the natural extracellular matrix, favor to the attachment and proliferation of the L929 fibroblasts. Thus, the scaffolds are promising to be used as biomaterials for many natural tissues repair.
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Affiliation(s)
- Yingke Wu
- a State Key Laboratory of Polymer Materials Engineering , College of Polymer Science and Engineering, Sichuan University , Chengdu , China
| | - Weiwei Lin
- a State Key Laboratory of Polymer Materials Engineering , College of Polymer Science and Engineering, Sichuan University , Chengdu , China
| | - Hongye Hao
- a State Key Laboratory of Polymer Materials Engineering , College of Polymer Science and Engineering, Sichuan University , Chengdu , China
| | - Jiehua Li
- a State Key Laboratory of Polymer Materials Engineering , College of Polymer Science and Engineering, Sichuan University , Chengdu , China
| | - Feng Luo
- a State Key Laboratory of Polymer Materials Engineering , College of Polymer Science and Engineering, Sichuan University , Chengdu , China
| | - Hong Tan
- a State Key Laboratory of Polymer Materials Engineering , College of Polymer Science and Engineering, Sichuan University , Chengdu , China
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280
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Anguiano M, Castilla C, Maška M, Ederra C, Peláez R, Morales X, Muñoz-Arrieta G, Mujika M, Kozubek M, Muñoz-Barrutia A, Rouzaut A, Arana S, Garcia-Aznar JM, Ortiz-de-Solorzano C. Characterization of three-dimensional cancer cell migration in mixed collagen-Matrigel scaffolds using microfluidics and image analysis. PLoS One 2017; 12:e0171417. [PMID: 28166248 PMCID: PMC5293277 DOI: 10.1371/journal.pone.0171417] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 01/20/2017] [Indexed: 12/22/2022] Open
Abstract
Microfluidic devices are becoming mainstream tools to recapitulate in vitro the behavior of cells and tissues. In this study, we use microfluidic devices filled with hydrogels of mixed collagen-Matrigel composition to study the migration of lung cancer cells under different cancer invasion microenvironments. We present the design of the microfluidic device, characterize the hydrogels morphologically and mechanically and use quantitative image analysis to measure the migration of H1299 lung adenocarcinoma cancer cells in different experimental conditions. Our results show the plasticity of lung cancer cell migration, which turns from mesenchymal in collagen only matrices, to lobopodial in collagen-Matrigel matrices that approximate the interface between a disrupted basement membrane and the underlying connective tissue. Our quantification of migration speed confirms a biphasic role of Matrigel. At low concentration, Matrigel facilitates migration, most probably by providing a supportive and growth factor retaining environment. At high concentration, Matrigel slows down migration, possibly due excessive attachment. Finally, we show that antibody-based integrin blockade promotes a change in migration phenotype from mesenchymal or lobopodial to amoeboid and analyze the effect of this change in migration dynamics, in regards to the structure of the matrix. In summary, we describe and characterize a robust microfluidic platform and a set of software tools that can be used to study lung cancer cell migration under different microenvironments and experimental conditions. This platform could be used in future studies, thus benefitting from the advantages introduced by microfluidic devices: precise control of the environment, excellent optical properties, parallelization for high throughput studies and efficient use of therapeutic drugs.
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Affiliation(s)
- María Anguiano
- Laboratory of Preclinical Models and Analytical Tools, Division of Solid Tumors and Biomarkers, Center for Applied Medical Research and CIBERONC, Pamplona, Navarra, Spain
| | - Carlos Castilla
- Laboratory of Preclinical Models and Analytical Tools, Division of Solid Tumors and Biomarkers, Center for Applied Medical Research and CIBERONC, Pamplona, Navarra, Spain
| | - Martin Maška
- Centre for Biomedical Image Analysis, Faculty of Informatics, Masaryk University, Brno, Czech Republic
| | - Cristina Ederra
- Laboratory of Preclinical Models and Analytical Tools, Division of Solid Tumors and Biomarkers, Center for Applied Medical Research and CIBERONC, Pamplona, Navarra, Spain
| | - Rafael Peláez
- Laboratory of Preclinical Models and Analytical Tools, Division of Solid Tumors and Biomarkers, Center for Applied Medical Research and CIBERONC, Pamplona, Navarra, Spain
| | - Xabier Morales
- Laboratory of Preclinical Models and Analytical Tools, Division of Solid Tumors and Biomarkers, Center for Applied Medical Research and CIBERONC, Pamplona, Navarra, Spain
| | - Gorka Muñoz-Arrieta
- Biodevices and MEMS group, Water and Health Division, CEIT and TECNUN University of Navarra, Donostia – San Sebastián, Gipuzkoa, SPAIN
| | - Maite Mujika
- Biodevices and MEMS group, Water and Health Division, CEIT and TECNUN University of Navarra, Donostia – San Sebastián, Gipuzkoa, SPAIN
| | - Michal Kozubek
- Centre for Biomedical Image Analysis, Faculty of Informatics, Masaryk University, Brno, Czech Republic
| | - Arrate Muñoz-Barrutia
- Bioengineering and Aerospace Engineering Department, Universidad Carlos III de Madrid, Leganes, Madrid
- Biomedical Engineering Division, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Ana Rouzaut
- Department of Biochemistry and Genetics, Faculty of Sciences, University of Navarra, Pamplona, Navarra, Spain
- Department of Immunology and Inmunotherapy, CIMA, Pamplona, Navarra, Spain
| | - Sergio Arana
- Biodevices and MEMS group, Water and Health Division, CEIT and TECNUN University of Navarra, Donostia – San Sebastián, Gipuzkoa, SPAIN
| | - José Manuel Garcia-Aznar
- Department of Mechanical Engineering, Multiscale in Mechanical and Biological Engineering (M2BE), Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza, Spain
| | - Carlos Ortiz-de-Solorzano
- Laboratory of Preclinical Models and Analytical Tools, Division of Solid Tumors and Biomarkers, Center for Applied Medical Research and CIBERONC, Pamplona, Navarra, Spain
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281
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Kayarkatte MK, Delikaya Ö, Roth C. Freestanding Catalyst Layers: A Novel Electrode Fabrication Technique for PEM Fuel Cells via Electrospinning. ChemElectroChem 2017. [DOI: 10.1002/celc.201600530] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Manoj Krishna Kayarkatte
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustraße 3 14195 Berlin Germany
| | - Öznur Delikaya
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustraße 3 14195 Berlin Germany
| | - Christina Roth
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustraße 3 14195 Berlin Germany
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282
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Reyes CG, Frey MW. Morphological traits essential to electrospun and grafted Nylon-6 nanofiber membranes for capturing submicron simulated exhaled breath aerosols. J Appl Polym Sci 2017. [DOI: 10.1002/app.44759] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Catherine G. Reyes
- Physics and Materials Science Research Unit; Université du Luxembourg; Limpertsberg L-1511 Luxembourg
| | - Margaret W. Frey
- Department of Fiber Science and Apparel Design; Cornell University; Ithaca New York 14853
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283
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Ovaska M, Bertalan Z, Miksic A, Sugni M, Di Benedetto C, Ferrario C, Leggio L, Guidetti L, Alava MJ, La Porta CA, Zapperi S. Deformation and fracture of echinoderm collagen networks. J Mech Behav Biomed Mater 2017; 65:42-52. [DOI: 10.1016/j.jmbbm.2016.07.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 07/07/2016] [Accepted: 07/31/2016] [Indexed: 11/26/2022]
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284
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Hotaling NA, Jeon J, Wade MB, Luong D, Palmer XL, Bharti K, Simon CG. Training to Improve Precision and Accuracy in the Measurement of Fiber Morphology. PLoS One 2016; 11:e0167664. [PMID: 27907145 PMCID: PMC5132175 DOI: 10.1371/journal.pone.0167664] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Accepted: 11/17/2016] [Indexed: 11/19/2022] Open
Abstract
An estimated $7.1 billion dollars a year is spent due to irreproducibility in pre-clinical data from errors in data analysis and reporting. Therefore, developing tools to improve measurement comparability is paramount. Recently, an open source tool, DiameterJ, has been deployed for the automated analysis of scanning electron micrographs of fibrous scaffolds designed for tissue engineering applications. DiameterJ performs hundreds to thousands of scaffold fiber diameter measurements from a single micrograph within a few seconds, along with a variety of other scaffold morphological features, which enables a more rigorous and thorough assessment of scaffold properties. Herein, an online, publicly available training module is introduced for educating DiameterJ users on how to effectively analyze scanning electron micrographs of fibers and the large volume of data that a DiameterJ analysis yields. The end goal of this training was to improve user data analysis and reporting to enhance reproducibility of analysis of nanofiber scaffolds. User performance was assessed before and after training to evaluate the effectiveness of the training modules. Users were asked to use DiameterJ to analyze reference micrographs of fibers that had known diameters. The results showed that training improved the accuracy and precision of measurements of fiber diameter in scanning electron micrographs. Training also improved the precision of measurements of pore area, porosity, intersection density, and characteristic fiber length between fiber intersections. These results demonstrate that the DiameterJ training module improves precision and accuracy in fiber morphology measurements, which will lead to enhanced data comparability.
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Affiliation(s)
- Nathan A. Hotaling
- Biosystems & Biomaterials Division, National Institute of Standards & Technology, Gaithersburg, Maryland
- Unit on Ocular and Stem Cell Translational Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland
- * E-mail:
| | - Jun Jeon
- Unit on Ocular and Stem Cell Translational Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Mary Beth Wade
- Integrated Biosciences PhD Student, Department of Polymer Science, The University of Akron, Akron, Ohio
| | - Derek Luong
- Department of Polymer Science, The University of Akron, Akron, Ohio
| | - Xavier-Lewis Palmer
- Biosystems & Biomaterials Division, National Institute of Standards & Technology, Gaithersburg, Maryland
| | - Kapil Bharti
- Unit on Ocular and Stem Cell Translational Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Carl G. Simon
- Biosystems & Biomaterials Division, National Institute of Standards & Technology, Gaithersburg, Maryland
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285
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Jordahl JH, Ramcharan S, Gregory JV, Lahann J. Needleless Electrohydrodynamic Cojetting of Bicompartmental Particles and Fibers from an Extended Fluid Interface. Macromol Rapid Commun 2016; 38. [DOI: 10.1002/marc.201600437] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/17/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Jacob H. Jordahl
- Biointerfaces Institute Department of Chemical Engineering University of Michigan 2800 Plymouth Rd Ann Arbor MI 48109 USA
| | - Stacy Ramcharan
- Biointerfaces Institute Department of Chemical Engineering University of Michigan 2800 Plymouth Rd Ann Arbor MI 48109 USA
| | - Jason V. Gregory
- Biointerfaces Institute Department of Chemical Engineering University of Michigan 2800 Plymouth Rd Ann Arbor MI 48109 USA
| | - Joerg Lahann
- Biointerfaces Institute Department of Chemical Engineering University of Michigan 2800 Plymouth Rd Ann Arbor MI 48109 USA
- Department of Biomedical Engineering Material Science and Engineering and Macromolecular Science and Engineering University of Michigan 2800 Plymouth Rd Ann Arbor MI 48109 USA
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286
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Wade MB, Rodenberg E, Patel U, Shah B, Becker ML. Influence of Sterilization Technologies on Electrospun Poly(ester urea)s for Soft Tissue Repair. Biomacromolecules 2016; 17:3363-3374. [PMID: 27610629 DOI: 10.1021/acs.biomac.6b01158] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mary Beth Wade
- Integrated
Biosciences Program, The University of Akron, Akron, Ohio 44325, United States
| | - Eric Rodenberg
- Cook Biotech, Inc., West Lafayette, Indiana 47906, United States
| | - Umesh Patel
- Cook Biotech, Inc., West Lafayette, Indiana 47906, United States
| | - Bhavin Shah
- Cook Biotech, Inc., West Lafayette, Indiana 47906, United States
| | - Matthew L. Becker
- The
Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
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287
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Luo T, Chen H, Kassab GS. 3D reconstruction of elastin fibres in coronary adventitia. J Microsc 2016; 265:121-131. [PMID: 27596327 DOI: 10.1111/jmi.12470] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 08/05/2016] [Accepted: 08/07/2016] [Indexed: 02/01/2023]
Abstract
A 3D reconstruction of individual fibres in vascular tissue is necessary to understand the microstructure properties of the vessel wall. The objective of this study is to determine the 3D microstructure of elastin fibres in the adventitia of coronary arteries. Quantification of fibre geometry is challenging due to the complex interwoven structure of the fibres. In particular, accurate linking of gaps remains a significant challenge, and complex features such as long gaps and interwoven fibres have not been adequately addressed by current fibre reconstruction algorithms. We use a novel line Laplacian deformation method, which better deals with fibre shape uncertainty to reconstruct elastin fibres in the coronary adventitia of five swine. A cost function, based on entropy and Euler Spiral, was used in the shortest path search. We find that mean diameter of elastin fibres is 1.67 ± 1.42 μm and fibre orientation is clustered around two major angles of 8.9˚ and 81.8˚. Comparing with CT-FIRE, we find that our method gives more accurate estimation of fibre width. To our knowledge, the measurements obtained using our algorithm represent the first investigation focused on the reconstruction of full elastin fibre length. Our data provide a foundation for a 3D microstructural model of the coronary adventitia to elucidate the structure-function relationship of elastin fibres.
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Affiliation(s)
- T Luo
- Department of Bioengineering, California Medical Innovations Institute, San Diego, California, U.S.A
| | - H Chen
- Department of Bioengineering, California Medical Innovations Institute, San Diego, California, U.S.A
| | - G S Kassab
- Department of Bioengineering, California Medical Innovations Institute, San Diego, California, U.S.A
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288
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Bienek DR, Hoffman KM, Tutak W. Blow-spun chitosan/PEG/PLGA nanofibers as a novel tissue engineering scaffold with antibacterial properties. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:146. [PMID: 27568217 DOI: 10.1007/s10856-016-5757-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 07/15/2016] [Indexed: 06/06/2023]
Abstract
Blow spinning is continuing to gain attention in tissue engineering, as the resultant nanofibrous structures can be used to create a biomimetic environment. In this study, blow spinning was used to construct nanofiber scaffolds with up to 10 % chitosan and poly(DL-lactide-co-glycolide) in the absence or presence of poly(ethylene glycol). Scanning electron microscopy demonstrated that nanofibers were distributed randomly to form three-dimensional mats. With respect to chitosan concentration, the average fiber diameter did not differ statistically in either the absence or presence of poly(ethylene glycol). In poly(ethylene glycol)-formulations, the average fiber diameter ranged from (981.9 ± 611.3) nm to (1139.2 ± 814.2) nm. In vitro cellular metabolic activity and proliferation studies using keratinized rat squamous epithelial cells (RL-65) showed that cytocompatibility was not compromised with the addition of poly(ethylene glycol). The cell responses at lower (1 and 2.5 %) chitosan concentrations were not significantly different from the groups without chitosan or no scaffold when cultivated for 3, 6, or 9 days. However, >15 % reduction in cellular responses were observed at 10 % chitosan. In presence of poly(ethylene glycol), nearly a 1-log incremental reduction in the number of colony forming units of Streptococcus mutans occurred as the chitosan concentration increased from 0-1 to 2.5 %. Bacterial preparations tested with poly(ethylene glycol) and 5 or 10 % chitosan were not significantly different than the positive kill control. Taken together, the most favorable conditions for attaining cytocompatibility and maintaining antibacterial functionality existed in poly(ethylene glycol)/poly(DL-lactide-co-glycolide) blow-spun scaffolds with integrated 1 or 2.5 % chitosan.
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Affiliation(s)
- Diane R Bienek
- ADA Foundation, Dr. Anthony Volpe Research Center, Gaithersburg, MD, 20899, USA.
| | - Kathleen M Hoffman
- National Institute of Standards and Technology, Engineering Laboratory-Fire Research Division, Gaithersburg, MD, 20899, USA
| | - Wojtek Tutak
- ADA Foundation, Dr. Anthony Volpe Research Center, Gaithersburg, MD, 20899, USA
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289
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Ravikrishnan A, Ozdemir T, Bah M, Baskerville KA, Shah SI, Rajasekaran AK, Jia X. Regulation of Epithelial-to-Mesenchymal Transition Using Biomimetic Fibrous Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2016; 8:17915-26. [PMID: 27322677 PMCID: PMC5070665 DOI: 10.1021/acsami.6b05646] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Epithelial-to-mesenchymal transition (EMT) is a well-studied biological process that takes place during embryogenesis, carcinogenesis, and tissue fibrosis. During EMT, the polarized epithelial cells with a cuboidal architecture adopt an elongated fibroblast-like morphology. This process is accompanied by the expression of many EMT-specific molecular markers. Although the molecular mechanism leading to EMT has been well-established, the effects of matrix topography and microstructure have not been clearly elucidated. Synthetic scaffolds mimicking the meshlike structure of the basement membrane with an average fiber diameter of 0.5 and 5 μm were produced via the electrospinning of poly(ε-caprolactone) (PCL) and were used to test the significance of fiber diameter on EMT. Cell-adhesive peptide motifs were conjugated to the fiber surface to facilitate cell attachment. Madin-Darby Canine Kidney (MDCK) cells grown on these substrates showed distinct phenotypes. On 0.5 μm substrates, cells grew as compact colonies with an epithelial phenotype. On 5 μm scaffolds, cells were more individually dispersed and appeared more fibroblastic. Upon the addition of hepatocyte growth factor (HGF), an EMT inducer, cells grown on the 0.5 μm scaffold underwent pronounced scattering, as evidenced by the alteration of cell morphology, localization of focal adhesion complex, weakening of cell-cell adhesion, and up-regulation of mesenchymal markers. In contrast, HGF did not induce a pronounced scattering of MDCK cells cultured on the 5.0 μm scaffold. Collectively, our results show that the alteration of the fiber diameter of proteins found in the basement membrane may create enough disturbances in epithelial organization and scattering that might have important implications in disease progression.
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Affiliation(s)
- Anitha Ravikrishnan
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Tugba Ozdemir
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Mohamed Bah
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | | | - S. Ismat Shah
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
- Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA
| | - Ayyappan K. Rajasekaran
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
- Department of Biological Sciences, University of Delaware, Newark, DE, 19716, USA
- Therapy Architects, LLC, Helen F Graham Cancer Center, Newark, DE, 19718, USA
| | - Xinqiao Jia
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
- Department of Biological Sciences, University of Delaware, Newark, DE, 19716, USA
- Department of Biomedical Engineering, University of Delaware, Newark, DE 19716, USA
- To whom correspondence should be addressed: Xinqiao Jia, 201 DuPont Hall, Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA. Phone: 302-831-6553, Fax: 302-831-4545,
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290
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Hotaling NA, Khristov V, Wan Q, Sharma R, Jha BS, Lotfi M, Maminishkis A, Simon CG, Bharti K. Nanofiber Scaffold-Based Tissue-Engineered Retinal Pigment Epithelium to Treat Degenerative Eye Diseases. J Ocul Pharmacol Ther 2016; 32:272-85. [PMID: 27110730 PMCID: PMC4904235 DOI: 10.1089/jop.2015.0157] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/24/2016] [Indexed: 12/16/2022] Open
Abstract
Clinical-grade manufacturing of a functional retinal pigment epithelium (RPE) monolayer requires reproducing, as closely as possible, the natural environment in which RPE grows. In vitro, this can be achieved by a tissue engineering approach, in which the RPE is grown on a nanofibrous biological or synthetic scaffold. Recent research has shown that nanofiber scaffolds perform better for cell growth and transplantability compared with their membrane counterparts and that the success of the scaffold in promoting cell growth/function is not heavily material dependent. With these strides, the field has advanced enough to begin to consider implementation of one, or a combination, of the tissue engineering strategies discussed herein. In this study, we review the current state of tissue engineering research for in vitro culture of RPE/scaffolds and the parameters for optimal scaffold design that have been uncovered during this research. Next, we discuss production methods and manufacturers that are capable of producing the nanofiber scaffolds in such a way that would be biologically, regulatory, clinically, and commercially viable. Then, a discussion of how the scaffolds could be characterized, both morphologically and mechanically, to develop a testing process that is viable for regulatory screening is performed. Finally, an example of a tissue-engineered RPE/scaffold construct is given to provide the reader a framework for understanding how these pieces could fit together to develop a tissue-engineered RPE/scaffold construct that could pass regulatory scrutiny and can be commercially successful.
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Affiliation(s)
- Nathan A. Hotaling
- Biosystems and Biomaterials Division, National Institute of Standards and Technology, Gaithersburg, Maryland
- Unit on Ocular and Stem Cell Translational Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Vladimir Khristov
- Section of Epithelial and Retinal Physiology and Disease, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Qin Wan
- Section of Epithelial and Retinal Physiology and Disease, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Ruchi Sharma
- Unit on Ocular and Stem Cell Translational Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Balendu Shekhar Jha
- Unit on Ocular and Stem Cell Translational Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Mostafa Lotfi
- Section of Epithelial and Retinal Physiology and Disease, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Arvydas Maminishkis
- Section of Epithelial and Retinal Physiology and Disease, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Carl G. Simon
- Biosystems and Biomaterials Division, National Institute of Standards and Technology, Gaithersburg, Maryland
| | - Kapil Bharti
- Unit on Ocular and Stem Cell Translational Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland
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291
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Behrens AM, Kim J, Hotaling N, Seppala JE, Kofinas P, Tutak W. Rapid fabrication of poly(DL-lactide) nanofiber scaffolds with tunable degradation for tissue engineering applications by air-brushing. Biomed Mater 2016; 11:035001. [PMID: 27121660 PMCID: PMC4963247 DOI: 10.1088/1748-6041/11/3/035001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Polymer nanofiber based materials have been widely investigated for use as tissue engineering scaffolds. While promising, these materials are typically fabricated through techniques that require significant time or cost. Here we report a rapid and cost effective air-brushing method for fabricating nanofiber scaffolds using a simple handheld apparatus, compressed air, and a polymer solution. Air-brushing also facilities control over the scaffold degradation rate without adversely impacting architecture. This was accomplished through a one step blending process of high (M w ≈ 100 000 g mol(-1)) and low (M w ≈ 25 000 g mol(-1)) molecular weight poly(DL-lactide) (PDLLA) polymers at various ratios (100:0, 70:30 and 50:50). Through this approach, we were able to control fiber scaffold degradation rate while maintaining similar fiber morphology, scaffold porosity, and bulk mechanical properties across all of the tested compositions. The impact of altered degradation rates was biologically evaluated in human bone marrow stromal cell (hBMSC) cultures for up to 16 days and demonstrated degradation rate dependence of both total DNA concentration and gene regulation.
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Affiliation(s)
- Adam M Behrens
- Fischell Department of Bioengineering, University of Maryland, 2330 Jeong H. Kim Engineering Building, College Park, MD, USA
| | - Jeffrey Kim
- Volpe Research Center ADA Foundation, 100 Bureau Dr, Gaithersburg, MD, USA
| | - Nathan Hotaling
- Biosystems and Biomaterials Division, National Institute of Standards and Technology, 100 Bureau Dr, Gaithersburg, MD, USA
| | - Jonathan E Seppala
- Materials Science and Engineering Division, National Institute of Standards and Technology, 100 Bureau Dr, Gaithersburg, MD, USA
| | - Peter Kofinas
- Fischell Department of Bioengineering, University of Maryland, 2330 Jeong H. Kim Engineering Building, College Park, MD, USA
| | - Wojtek Tutak
- Volpe Research Center ADA Foundation, 100 Bureau Dr, Gaithersburg, MD, USA
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292
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Garay AS, Rodrigues DE, Fuselli A, Martino DM, Passeggi MCG. First Steps in the Aggregation Process of Copolymers Based on Thymine Monomers: Characterization by Molecular Dynamics Simulations and Atomic Force Microscopy. J Phys Chem B 2016; 120:3414-24. [PMID: 26991880 DOI: 10.1021/acs.jpcb.5b11342] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Atomistic molecular dynamic simulations were performed to study the structure of isolated VBT-VBA (vinylbenzylthymine-vinylbenzyltriethylammonium chloride) copolymer chains in water at different monomeric species ratios (1:1 and 1:4). The geometric parameters of the structure that the copolymers form in equilibrium together with the basic interactions that stabilize them were determined. Atomic force microscopy (AFM) measurements of dried diluted concentrations of the two copolymers onto highly oriented pyrolytic graphite (HOPG) substrates were carried out to study their aggregation arrangement. The experiments show that both copolymers arrange in fiber-like structures. Comparing the diameters predicted by the simulation results and those obtained by AFM, it can be concluded that individual copolymers arrange in bunches of two chains, stabilized by contra-ions-copolymer interactions for the 1:1 copolymerization ratio at the ionic strength of our samples. In contrast, for the 1:4 system the individual copolymer chains do not aggregate in bunches. These results remark the relevance of the copolymerization ratio and ionic strength of the solvent in the mesoscopic structure of these materials.
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Affiliation(s)
- A Sergio Garay
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, C.C. 242, Ciudad Universitaria, Universidad Nacional del Litoral (UNL) , S3000ZAA Santa Fe, Argentina
| | - Daniel E Rodrigues
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, C.C. 242, Ciudad Universitaria, Universidad Nacional del Litoral (UNL) , S3000ZAA Santa Fe, Argentina
| | - Antonela Fuselli
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, C.C. 242, Ciudad Universitaria, Universidad Nacional del Litoral (UNL) , S3000ZAA Santa Fe, Argentina
| | | | - Mario C G Passeggi
- Departamento de Materiales, Facultad de Ingeniería Química, Universidad Nacional del Litoral (UNL) , Santiago del Estero 2829, S3000AOM Santa Fe, Argentina
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293
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Poornejad N, Momtahan N, Salehi ASM, Scott DR, Fronk CA, Roeder BL, Reynolds PR, Bundy BC, Cook AD. Efficient decellularization of whole porcine kidneys improves reseeded cell behavior. Biomed Mater 2016; 11:025003. [DOI: 10.1088/1748-6041/11/2/025003] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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294
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Kurusu RS, Demarquette NR. Wetting of Hydrophilic Electrospun Mats Produced by Blending SEBS with PEO-PPO-PEO Copolymers of Different Molecular Weight. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1846-1853. [PMID: 26824615 DOI: 10.1021/acs.langmuir.5b04287] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The interaction of electrospun mats with water is critical for many possible applications, and the water contact angle on the surface is the parameter usually measured to characterize wetting. Although useful for hydrophobic surfaces, this approach is limited for hydrophilic mats, where wicking also has to be considered. In this case, it is still unclear how the fiber surface chemical composition and morphology will affect the wetting behavior of electrospun mats. In this work, wetting was studied with different hydrophilic membranes produced by blending thermoplastic elastomer poly(styrene)-b-poly(ethylene-butylene)-b-poly(styrene) (SEBS) with amphiphilic poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (PEO-PPO-PEO) molecules. Three different types of PEO-PPO-PEO, with different molar masses, PEO content, and physical form were used. The effect of these differences on the wetting behavior of the electrospun mats was evaluated by contact angle goniometry, wicking measurements, and different imaging techniques. X-ray photoelectron spectroscopy was used to characterize the surface chemical composition. The smaller molecules quickly saturated the surface at low concentrations, making the mats hydrophilic. The sheath of PEO-PPO-PEO also resulted in fast absorption of water, when comparing the saturated and nonsaturated surfaces. Longer PEO chain-ends seemed to hinder complete segregation and also led to a higher activation time when in contact with water. Liquid PEO-PPO-PEO was easily leached by water.
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Affiliation(s)
- Rafael S Kurusu
- Mechanical Engineering Department, École de technologie supérieure - ÉTS, 1100 Notre-Dame Street West, Montréal, Québec H3C 1K3, Canada
| | - Nicole R Demarquette
- Mechanical Engineering Department, École de technologie supérieure - ÉTS, 1100 Notre-Dame Street West, Montréal, Québec H3C 1K3, Canada
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295
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Poornejad N, Nielsen JJ, Morris RJ, Gassman JR, Reynolds PR, Roeder BL, Cook AD. Comparison of four decontamination treatments on porcine renal decellularized extracellular matrix structure, composition, and support of human renal cortical tubular epithelium cells. J Biomater Appl 2015; 30:1154-67. [PMID: 26589294 DOI: 10.1177/0885328215615760] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Engineering whole organs from porcine decellularized extracellular matrix and human cells may lead to a plentiful source of implantable organs. Decontaminating the porcine decellularized extracellular matrix scaffolds is an essential step prior to introducing human cells. However, decontamination of whole porcine kidneys is a major challenge because the decontamination agent or irradiation needs to diffuse deep into the structure to eliminate all microbial contamination while minimizing damage to the structure and composition of the decellularized extracellular matrix. In this study, we compared four decontamination treatments that could be applicable to whole porcine kidneys: 70% ethanol, 0.2% peracetic acid in 1 M NaCl, 0.2% peracetic acid in 4% ethanol, and gamma (γ)-irradiation. Porcine kidneys were decellularized by perfusion of 0.5% (w/v) aqueous solution of sodium dodecyl sulfate and the four decontamination treatments were optimized using segments (n = 60) of renal tissue to ensure a consistent comparison. Although all four methods were successful in decontamination, γ-irradiation was very damaging to collagen fibers and glycosaminoglycans, leading to less proliferation of human renal cortical tubular epithelium cells within the porcine decellularized extracellular matrix. The effectiveness of the other three optimized solution treatments were then all confirmed using whole decellularized porcine kidneys (n = 3). An aqueous solution of 0.2% peracetic acid in 1 M NaCl was determined to be the best method for decontamination of porcine decellularized extracellular matrix.
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Affiliation(s)
- Nafiseh Poornejad
- Department of Chemical Engineering, Brigham Young University, Provo, UT, USA
| | - Jeffery J Nielsen
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Ryan J Morris
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT, USA
| | - Jason R Gassman
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT, USA
| | - Paul R Reynolds
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT, USA
| | | | - Alonzo D Cook
- Department of Chemical Engineering, Brigham Young University, Provo, UT, USA
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296
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Dataset for the validation and use of DiameterJ an open source nanofiber diameter measurement tool. Data Brief 2015; 5:13-22. [PMID: 26380840 PMCID: PMC4556745 DOI: 10.1016/j.dib.2015.07.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 07/09/2015] [Indexed: 11/20/2022] Open
Abstract
DiameterJ is an open source image analysis plugin for ImageJ. DiameterJ produces ten files for every image that it analyzes. These files include the images that were analyzed, the data to create histograms of fiber radius, pore size, fiber orientation, and summary statistics, as well as images to check the output of DiameterJ. DiameterJ was validated with 130 in silico-derived, digital, synthetic images and 24 scanning electron microscope (SEM) images of steel wire samples with a known diameter distribution. Once validated, DiameterJ was used to analyze SEM images of electrospun polymeric nanofibers, including a comparison of different segmentation algorithms. In this article, all digital synthetic images, SEM images, and their segmentations are included. Additionally, DiameterJ's raw output files, and processed data is included for the reader. The data provided herein was used to generate the figures in DiameterJ: A Validated Open Source Nanofiber Diameter Measurement Tool[1], where more discussion can be found.
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