1
|
Norozi S, Ghollasi M, Salimi A, Halabian R, Shahrousvad M. Mesenchymal stem cells osteogenic differentiation by ZnO nanoparticles and polyurethane bimodal foam nanocomposites. Cell Tissue Bank 2024; 25:167-185. [PMID: 37103688 DOI: 10.1007/s10561-023-10090-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 04/06/2023] [Indexed: 04/28/2023]
Abstract
Mesenchymal stem cells with tissue repair capacity involve in regenerative medicine. MSCs can promote bone repair when employed with nano scaffolds/particles. Here, the MTT and Acridine Orange assay enabled the cytotoxic concentration of Zinc oxide nanoparticles and Polyurethane evaluation. Following culturing adipose tissue-derived MSCs, ADSCs' proliferation, growth, and osteogenic differentiation in the presence of PU with and without ZnO NPs is tracked by a series of biological assays, including Alkaline Phosphatase activity, Calcium deposition, alizarin red staining, RT-PCR, scanning electron microscope, and immunohistochemistry. The results showed boosted osteogenic differentiation of ADSCs in the presence of 1% PU scaffold and ZnO NPS and can thus apply as a new bone tissue engineering matrix. The expression level of Osteonectin, Osteocalcin, and Col1 increased in PU-ZnO 1% on the 7th and 14th days. There was an increase in the Runx2 gene expression on the 7th day of differentiation in PU-ZnO 1%, while it decreased on day 14th. In conclusion, Polyurethane nano scaffolds supported the MSCs' growth and rapid osteogenic differentiation. The PU-ZnO helps not only with cellular adhesion and proliferation but also with osteogenic differentiation.
Collapse
Affiliation(s)
- Shima Norozi
- Department of Molecular and Cellular Sciences, Faculty of Advanced Sciences and Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Mrazieh Ghollasi
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Ali Salimi
- Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Raheleh Halabian
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | - Mohsen Shahrousvad
- Caspian Faculty of Engineering, College of Engineering, University of Tehran, Tehran, Iran
| |
Collapse
|
2
|
Chemmarappally JM, Pegram HCN, Abeywickrama N, Fornari E, Hargreaves AJ, De Girolamo LA, Stevens B. A co-culture nanofibre scaffold model of neural cell degeneration in relevance to Parkinson's disease. Sci Rep 2020; 10:2767. [PMID: 32066745 PMCID: PMC7026118 DOI: 10.1038/s41598-020-59310-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 01/20/2020] [Indexed: 12/17/2022] Open
Abstract
Current therapeutic strategies for Parkinson’s disease (PD) aim to delay progression or replace damaged neurons by restoring the original neuronal structures. The poor regenerative capacity of neural tissue highlights the need for the development of cellular environments to model the pathogenesis of PD. In the current work, we have characterised the growth, survival and response to PD mimetics of human SH-SY5Y neuroblastoma and U-87MG glioblastoma cell lines cultured on polyacrylonitrile (PAN) and Jeffamine® doped polyacrylonitrile (PJ) nano-scaffolds. Differentiation induced by a range of agents was evaluated by immunoassays of neural protein biomarkers. PAN and PJ nanofibre scaffolds provided suitable three-dimensional (3D) environment to support the growth, differentiation and network formation of dopaminergic neuron- and astrocyte-like cell populations, respectively. The scaffolds selectively supported the survival and differentiation of both cell populations with prolonged neuronal survival when exposed to PD mimetics in the presence of astrocytes in a co-culture model. Such 3D nanoscaffold-based assays could aid our understanding of the molecular basis of PD mimetic-induced Parkinsonism and the discovery of neuroprotective agents.
Collapse
Affiliation(s)
- Joseph M Chemmarappally
- Innovations in Surfaces, Materials and Related Technologies (iSMART), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK.,Interdisciplinary Biomedical Research Centre (IBRC), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK
| | - Henry C N Pegram
- Innovations in Surfaces, Materials and Related Technologies (iSMART), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK.,Interdisciplinary Biomedical Research Centre (IBRC), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK
| | - Neranga Abeywickrama
- Innovations in Surfaces, Materials and Related Technologies (iSMART), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK
| | - Enzo Fornari
- Innovations in Surfaces, Materials and Related Technologies (iSMART), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK
| | - Alan J Hargreaves
- Interdisciplinary Biomedical Research Centre (IBRC), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK
| | - Luigi A De Girolamo
- Interdisciplinary Biomedical Research Centre (IBRC), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK
| | - Bob Stevens
- Innovations in Surfaces, Materials and Related Technologies (iSMART), College of Science and Technology, Nottingham Trent University, Clifton, NG11 8NS, UK.
| |
Collapse
|
3
|
Wekwejt M, Michno A, Truchan K, Pałubicka A, Świeczko-Żurek B, Osyczka AM, Zieliński A. Antibacterial Activity and Cytocompatibility of Bone Cement Enriched with Antibiotic, Nanosilver, and Nanocopper for Bone Regeneration. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1114. [PMID: 31382557 PMCID: PMC6722923 DOI: 10.3390/nano9081114] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 12/11/2022]
Abstract
Bacterial infections due to bone replacement surgeries require modifications of bone cement with antibacterial components. This study aimed to investigate whether the incorporation of gentamicin or nanometals into bone cement may reduce and to what extent bacterial growth without the loss of overall cytocompatibility and adverse effects in vitro. The bone cement Cemex was used as the base material, modified either with gentamicin sulfate or nanometals: Silver or copper. The inhibition of bacterial adhesion and growth was examined against five different bacterial strains along with integrity of erythrocytes, viability of blood platelets, and dental pulp stem cells. Bone cement modified with nanoAg or nanoCu revealed greater bactericidal effects and prevented the biofilm formation better compared to antibiotic-loaded bone cement. The cement containing nanoAg displayed good cytocompatibility without noticeable hemolysis of erythrocytes or blood platelet disfunction and good viability of dental pulp stem cells (DPSC). On the contrary, the nanoCu cement enhanced hemolysis of erythrocytes, reduced the platelets aggregation, and decreased DPSC viability. Based on these studies, we suggest the modification of bone cement with nanoAg may be a good strategy to provide improved implant fixative for bone regeneration purposes.
Collapse
Affiliation(s)
- Marcin Wekwejt
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, 80-233 Gdańsk, Poland.
| | - Anna Michno
- Chair of Clinical Biochemistry, Department of Laboratory Medicine, Medical University of Gdańsk, 80-210 Gdańsk, Poland
| | - Karolina Truchan
- Department of Biology and Cell Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, 30-387 Kraków, Poland
| | - Anna Pałubicka
- Department of Laboratory Diagnostics and Microbiology with Blood Bank, Specialist Hospital in Kościerzyna, 83-400 Kościerzyna, Poland
- Department of Surgical Oncologic, Medical University of Gdańsk, 80-210 Gdańsk, Poland
| | - Beata Świeczko-Żurek
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, 80-233 Gdańsk, Poland
| | - Anna Maria Osyczka
- Department of Biology and Cell Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, 30-387 Kraków, Poland
| | - Andrzej Zieliński
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, 80-233 Gdańsk, Poland
| |
Collapse
|
4
|
McNeill EP, Reese RW, Tondon A, Clough BH, Pan S, Froese J, Palmer D, Krause U, Loeb DM, Kaunas R, Gregory CA. Three-dimensional in vitro modeling of malignant bone disease recapitulates experimentally accessible mechanisms of osteoinhibition. Cell Death Dis 2018; 9:1161. [PMID: 30478297 PMCID: PMC6255770 DOI: 10.1038/s41419-018-1203-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/25/2018] [Accepted: 10/29/2018] [Indexed: 12/11/2022]
Abstract
Malignant bone disease (MBD) occurs when tumors establish in bone, causing catastrophic tissue damage as a result of accelerated bone destruction and inhibition of repair. The resultant so-called osteolytic lesions (OL) take the form of tumor-filled cavities in bone that cause pain, fractures, and associated morbidity. Furthermore, the OL microenvironment can support survival of tumor cells and resistance to chemotherapy. Therefore, a deeper understanding of OL formation and MBD progression is imperative for the development of future therapeutic strategies. Herein, we describe a novel in vitro platform to study bone-tumor interactions based on three-dimensional co-culture of osteogenically enhanced human mesenchymal stem cells (OEhMSCs) in a rotating wall vessel bioreactor (RWV) while attached to micro-carrier beads coated with extracellular matrix (ECM) composed of factors found in anabolic bone tissue. Osteoinhibition was recapitulated in this model by co-culturing the OEhMSCs with a bone-tumor cell line (MOSJ-Dkk1) that secretes the canonical Wnt (cWnt) inhibitor Dkk-1, a tumor-borne osteoinhibitory factor widely associated with several forms of MBD, or intact tumor fragments from Dkk-1 positive patient-derived xenografts (PDX). Using the model, we observed that depending on the conditions of growth, tumor cells can biochemically inhibit osteogenesis by disrupting cWnt activity in OEhMSCs, while simultaneously co-engrafting with OEhMSCs, displacing them from the niche, perturbing their activity, and promoting cell death. In the absence of detectable co-engraftment with OEhMSCs, Dkk-1 positive PDX fragments had the capacity to enhance OEhMSC proliferation while inhibiting their osteogenic differentiation. The model described has the capacity to provide new and quantifiable insights into the multiple pathological mechanisms of MBD that are not readily measured using monolayer culture or animal models.
Collapse
Affiliation(s)
- Eoin P McNeill
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, Texas A&M Health Science Center, College Station, TX, 77845, USA
| | - Robert W Reese
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Abishek Tondon
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Bret H Clough
- Department of Medical Physiology, Texas A&M Health Science Center, Temple, TX, 76501, USA
| | - Simin Pan
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, Texas A&M Health Science Center, College Station, TX, 77845, USA
| | - Jeremiah Froese
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, Texas A&M Health Science Center, College Station, TX, 77845, USA
| | - Daniel Palmer
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, Texas A&M Health Science Center, College Station, TX, 77845, USA
| | - Ulf Krause
- Institute for Transfusion Medicine and Transplant Immunology, University Hospital Muenster, Muenster, Germany
| | - David M Loeb
- Departments of Pediatrics and Developmental and Molecular Biology, Children's Hospital at Montefiore, Albert Einstein College of Medicine, 3411 Wayne Avenue, Bronx, NY, 10467, USA
| | - Roland Kaunas
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA.
| | - Carl A Gregory
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, Texas A&M Health Science Center, College Station, TX, 77845, USA.
| |
Collapse
|
5
|
Short-term culture of monocytes as an in vitro evaluation system for bionanomaterials designated for medical use. Food Chem Toxicol 2016; 96:302-8. [DOI: 10.1016/j.fct.2016.08.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/18/2016] [Accepted: 08/19/2016] [Indexed: 02/07/2023]
|
6
|
Parameswaran S, Sharma RK. Insulin Cannot Induce Adipogenic Differentiation in Primary Cardiac Cultures. Int J Angiol 2016; 25:181-5. [PMID: 27574386 DOI: 10.1055/s-0035-1571191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 11/30/2015] [Indexed: 10/22/2022] Open
Abstract
Cardiac tissue contains a heterogeneous population of cardiomyocytes and nonmyocyte population especially fibroblasts. Fibroblast differentiation into adipogenic lineage is important for fat accumulation around the heart which is important in cardiac pathology. The differentiation in fibroblast has been observed both spontaneously and due to increased insulin stimulation. The present study aims to observe the effect of insulin in adipogenic differentiation of cardiac cells present in primary murine cardiomyocyte cultures. Oil Red O (ORO) staining has been used for observing the lipid accumulations formed due to adipogenic differentiation in murine cardiomyocyte cultures. The accumulated lipids were quantified by ORO assay and normalized using protein estimation. The lipid accumulation in cardiac cultures did not increase in presence of insulin. However, addition of other growth factors like insulin-like growth factor 1 and epidermal growth factor promoted adipogenic differentiation even in the presence of insulin and other inhibitory molecules such as vitamins. Lipid accumulation also increased in cells grown in media without insulin after an initial exposure to insulin-containing growth media. The current study adds to the existing knowledge that the insulin by itself cannot induce adipogenic induction in the cardiac cultures. The data have significance in the understanding of cardiovascular health especially in diabetic patients.
Collapse
Affiliation(s)
- Sreejit Parameswaran
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Rajendra K Sharma
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| |
Collapse
|
7
|
Bobrowska J, Pabijan J, Wiltowska-Zuber J, Jany BR, Krok F, Awsiuk K, Rysz J, Budkowski A, Lekka M. Protocol of single cells preparation for time of flight secondary ion mass spectrometry. Anal Biochem 2016; 511:52-60. [PMID: 27318241 DOI: 10.1016/j.ab.2016.06.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/03/2016] [Accepted: 06/07/2016] [Indexed: 12/30/2022]
Abstract
There are several techniques like time of flight secondary ion mass spectrometry (ToF SIMS) that require a special protocol for preparation of biological samples, in particular, those containing single cells due to high vacuum conditions that must be kept during the experiment. Frequently, preparation methodology involves liquid nitrogen freezing what is not always convenient. In our studies, we propose and validate a protocol for preparation of single cells. It consists of four steps: (i) paraformaldehyde fixation, (ii) salt removal, (iii) dehydrating, and (iv) sample drying under ambient conditions. The protocol was applied to samples with single melanoma cells i.e. WM115 and WM266-4 characterized by similar morphology. The surface and internal structures of cells were monitored using atomic force, scanning electron and fluorescent microscopes, used to follow any potential protocol-induced alterations. To validate the proposed methodology for sample preparation, ToF SIMS experiments were carried out using C60(+) cluster ion beam. The applied principal component analysis (PCA) revealed that chemical changes on cell surface of melanoma cells were large enough to differentiate between primary and secondary tumor sites. Subject category: Mass spectrometry.
Collapse
Affiliation(s)
- Justyna Bobrowska
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Cracow, Poland
| | - Joanna Pabijan
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Cracow, Poland
| | - Joanna Wiltowska-Zuber
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Cracow, Poland
| | - Benedykt R Jany
- Marian Smoluchowski Institute of Physics, Jagiellonian University, Lojasiewicza 11, 30-348 Cracow, Poland
| | - Franciszek Krok
- Marian Smoluchowski Institute of Physics, Jagiellonian University, Lojasiewicza 11, 30-348 Cracow, Poland
| | - Kamil Awsiuk
- Marian Smoluchowski Institute of Physics, Jagiellonian University, Lojasiewicza 11, 30-348 Cracow, Poland
| | - Jakub Rysz
- Marian Smoluchowski Institute of Physics, Jagiellonian University, Lojasiewicza 11, 30-348 Cracow, Poland
| | - Andrzej Budkowski
- Marian Smoluchowski Institute of Physics, Jagiellonian University, Lojasiewicza 11, 30-348 Cracow, Poland
| | - Malgorzata Lekka
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Cracow, Poland.
| |
Collapse
|
8
|
Rezende KM, Bönecker M, Perez CA, Mantesso A. Synchrotron radiation X-ray micro-fluorescence: Protocol to study mesenchymal stem cells. Microsc Res Tech 2016; 79:149-54. [PMID: 26749077 DOI: 10.1002/jemt.22615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/07/2015] [Accepted: 12/08/2015] [Indexed: 01/08/2023]
Abstract
The micro-X-ray fluorescence by synchrotron radiation (μ-XRF) is a method to determine the composition of tissues without destroying the samples. However, this technique has never been used for the analysis of mesenchymal stem cells (MSC). This study compared different protocols for fixing, storing, preserving, and establishing the correct numbers of dental derived MSC submitted to μ-XRF analysis. Stem cells were obtained from human dental tissue. After cell expansion, and MACS isolation, the samples were fixed and the following quantities of cells 1 × 10(4) to 1 × 10(7) were divided in two groups: G1: fixed in 4% paraformaldehyde diluted in phosphate-buffered saline solution, and G2: fixed in 4% paraformaldehyde diluted in MilliQ water. The G1 cells showed precipitation of chemical components from the solution resulting in the formation of salt crystals while G2 cells were clear and almost transparent in the sample holder. With regards to cells concentration, the best results occurred when four droplets of 1 × 10(7) cells were analyzed. This work shows that to identify and study the distribution of trace elements in MSC by μ-XRF, the best protocol is fixation in 4% paraformaldehyde diluted with MilliQ water at 4°C and a concentration of four incremental droplets of 1 × 10(7) cells.
Collapse
Affiliation(s)
- Karla Mayra Rezende
- Department of Pediatric Dentistry, University of São Paulo, São Paulo, Brazil
| | - Marcelo Bönecker
- Department of Pediatric Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - Andrea Mantesso
- Department of Oral Pathology, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
9
|
Santana BP, Nedel F, Perelló Ferrúa C, Marques e Silva R, da Silva AF, Demarco FF, Lenin Villarreal Carreño N. Comparing different methods to fix and to dehydrate cells on alginate hydrogel scaffolds using scanning electron microscopy. Microsc Res Tech 2015; 78:553-61. [PMID: 25871651 DOI: 10.1002/jemt.22508] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 03/28/2015] [Indexed: 01/15/2023]
Abstract
Scanning electron microscopy (SEM) is commonly used in the analysis of scaffolds morphology, as well as cell attachment, morphology and spreading on to the scaffolds. However, so far a specific methodology to prepare the alginate hydrogel (AH) scaffolds for SEM analysis has not been evaluated. This study compared different methods to fix/dehydrate cells in AH scaffolds for SEM analysis. AH scaffolds were prepared and seeded with NIH/3T3 cell line; fixed with glutaraldehyde, osmium tetroxide, or the freeze drying method and analyzed by SEM. Results demonstrated that the freeze dried method interferes less with cell morphology and density, and preserves the scaffolds structure. The fixation with glutaraldehyde did not affect cells morphology and density; however, the scaffolds morphology was affected in some level. The fixation with osmium tetroxide interfered in the natural structure of cells and scaffold. In conclusion the freeze drying and glutaraldehyde are suitable methods for cell fixation in AH scaffold for SEM, although scaffolds structure seems to be affected by glutaraldehyde.
Collapse
Affiliation(s)
- Bianca Palma Santana
- Nucleus of Cellular and Tecidual Biology (NCTBio), Post-Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Fernanda Nedel
- Nucleus of Cellular and Tecidual Biology (NCTBio), Post-Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.,Post-Graduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, RS, Brazil
| | - Camila Perelló Ferrúa
- Nucleus of Cellular and Tecidual Biology (NCTBio), Post-Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil
| | | | - Adriana Fernandes da Silva
- Nucleus of Cellular and Tecidual Biology (NCTBio), Post-Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Flávio Fernando Demarco
- Nucleus of Cellular and Tecidual Biology (NCTBio), Post-Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil
| | | |
Collapse
|
10
|
Investigation of CPD and HMDS sample preparation techniques for cervical cells in developing computer-aided screening system based on FE-SEM/EDX. ScientificWorldJournal 2014; 2014:289817. [PMID: 25610902 PMCID: PMC4291196 DOI: 10.1155/2014/289817] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 09/24/2014] [Indexed: 11/22/2022] Open
Abstract
This paper investigated the effects of critical-point drying (CPD) and hexamethyldisilazane (HMDS) sample preparation techniques for cervical cells on field emission scanning electron microscopy and energy dispersive X-ray (FE-SEM/EDX). We investigated the visualization of cervical cell image and elemental distribution on the cervical cell for two techniques of sample preparation. Using FE-SEM/EDX, the cervical cell images are captured and the cell element compositions are extracted for both sample preparation techniques. Cervical cell image quality, elemental composition, and processing time are considered for comparison of performances. Qualitatively, FE-SEM image based on HMDS preparation technique has better image quality than CPD technique in terms of degree of spread cell on the specimen and morphologic signs of cell deteriorations (i.e., existence of plate and pellet drying artifacts and membrane blebs). Quantitatively, with mapping and line scanning EDX analysis, carbon and oxygen element compositions in HMDS technique were higher than the CPD technique in terms of weight percentages. The HMDS technique has shorter processing time than the CPD technique. The results indicate that FE-SEM imaging, elemental composition, and processing time for sample preparation with the HMDS technique were better than CPD technique for cervical cell preparation technique for developing computer-aided screening system.
Collapse
|
11
|
López-Esclapez R, García MD, Arnaldos MI, Presa JJ, Ubero-Pascal N. Are the evidences of forensic entomology preserved in ethanol suitable for SEM studies? Micron 2014; 62:43-51. [DOI: 10.1016/j.micron.2014.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 02/28/2014] [Accepted: 03/06/2014] [Indexed: 10/25/2022]
|
12
|
Enhanced cardiomyogenic lineage differentiation of adult bone-marrow-derived stem cells grown on cardiogel. Cell Tissue Res 2013; 353:443-56. [PMID: 23771778 DOI: 10.1007/s00441-013-1661-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 05/06/2013] [Indexed: 02/03/2023]
Abstract
The extracellular matrix (ECM) and its components are known to promote growth and cellular differentiation in vitro. Cardiogel, a three-dimensional extracellular matrix derived from cardiac fibroblasts, is evaluated for its cardiomyogenic-differentiation-inducing potential on bone-marrow-derived stem cells (BMSC). BMSC from adult mice were grown on cardiogel and induced to differentiate into specific lineages that were validated by morphological, phenotypic and molecular assays. The data revealed that the cardiogel enhanced cardiomyogenic and adipogenic differentiation and relegated osteogenic differentiation following specific induction. More importantly, increased cardiomyogenic differentiation was also observed following BMSC growth on cardiogel without specific chemical (5-azacytidine) induction. This is the first report of an attempt to use cardiogel as a biomaterial on which to achieve cardiomyogenic differentiation of BMSC without chemical induction. Our study suggests that cardiogel is an efficient extracellular matrix that enhances the cardiomyogenic differentiation of BMSC and that it can therefore be used as a scaffold for cardiac tissue regeneration.
Collapse
|
13
|
Louviot M, Boudon V, Manceron L, Roy P, Bermejo D, Martínez RZ. High-Resolution Spectroscopy and Structure of Osmium Tetroxide. A Benchmark Study on 192OsO4. Inorg Chem 2012; 51:10356-65. [DOI: 10.1021/ic3015282] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maud Louviot
- Laboratoire Interdisciplinaire
Carnot de Bourgogne (ICB), CNRS UMR 6303, Université de Bourgogne, 9 Avenue Alain Savary, BP 47870, F-21078
Dijon Cedex, France
| | - Vincent Boudon
- Laboratoire Interdisciplinaire
Carnot de Bourgogne (ICB), CNRS UMR 6303, Université de Bourgogne, 9 Avenue Alain Savary, BP 47870, F-21078
Dijon Cedex, France
| | - Laurent Manceron
- Laboratoire
de Dynamique, Interactions
et Réactivité, CNRS UMR 7075, 4 Place Jussieu, F-75252 Paris Cedex, France
- Synchrotron SOLEIL, Ligne AILES, L’Orme des Merisiers Saint-Aubin, F-91192 Gif-sur-Yvette,
France
| | - Pascale Roy
- Synchrotron SOLEIL, Ligne AILES, L’Orme des Merisiers Saint-Aubin, F-91192 Gif-sur-Yvette,
France
| | - Dionisio Bermejo
- Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid, Spain
| | - Raúl Z. Martínez
- Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid, Spain
| |
Collapse
|
14
|
Sreejit P, Dilip KB, Verma RS. Generation of mesenchymal stem cell lines from murine bone marrow. Cell Tissue Res 2012; 350:55-68. [PMID: 22836234 DOI: 10.1007/s00441-012-1458-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Accepted: 05/30/2012] [Indexed: 12/21/2022]
Abstract
Mesenchymal stem cells (MSC), because of their multipotency and ease of purification and amplification, are an ideal stem cell source for cell therapies. Bone-marrow-derived stem cells (BMSC) can be used to develop MSC-like immortalized cell lines with large proliferation and differentiation potentialities. Their immortalized status prevents the maintenance of MSC function and characters; this can be negated by modifying the isolation and maintenance protocol. Adult murine BMSC were isolated and maintained in media without additional growth factors together with passage-dependent reseeding following trypsinization. Cells maintained over 25 passages were considered as putative cell lines and characterized. The phenotypic and genotypic characteristics and multilineage differentiation potential of the cells were assessed by morphological, phenotypic, and molecular assays at various passages. The putative BMSC cell lines showed the characteristics of MSC and were able to maintain these characteristics, even after immortalization. The phenotypic data demonstrated difference among two cell lines; this was further validated by the difference in their multilineage differentiation potential following specific induction. More importantly, no changes were observed in the genotypic level in comparison with control cells, even after more than 50 passages. Our protocol thus advances the isolation and maintenance of BMSC and the development of putative BMSC cell lines that maintain characteristics of MSC, including multilineage differentiation potential, after more than 40 passages.
Collapse
Affiliation(s)
- P Sreejit
- Stem Cell & Molecular Biology Laboratory (201), Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036 TN, India
| | | | | |
Collapse
|
15
|
Atari M, Caballé-Serrano J, Gil-Recio C, Giner-Delgado C, Martínez-Sarrà E, García-Fernández DA, Barajas M, Hernández-Alfaro F, Ferrés-Padró E, Giner-Tarrida L. The enhancement of osteogenesis through the use of dental pulp pluripotent stem cells in 3D. Bone 2012; 50:930-41. [PMID: 22270057 DOI: 10.1016/j.bone.2012.01.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 12/30/2011] [Accepted: 01/02/2012] [Indexed: 01/09/2023]
Abstract
The potential for osteogenic differentiation of dental pulp mesenchymal stem cells (DPMSCs) in vitro and in vivo has been well documented in a variety of studies. Previously, we obtained a population of cells from human dental pulp called dental pulp pluripotent stem cells (DPPSCs) that could differentiate into mesodermal, ectodermal and endodermal progenies. We compared the osteogenic capacity of DPPSCs and DPMSCs that had been isolated from the same donors (N=5) and cultivated in the same osteogenic medium in 3D (three dimensions) Cell Carrier glass scaffolds. We also compared the architecture of bone-like tissue obtained from DPPSCs and human maxillary bone tissue. Differentiation was evaluated by scanning electron microscopy, whereas the expression of bone markers such as ALP, Osteocalcin, COLL1 and Osteonectin was investigated by quantitative real time polymerase chain reaction (qRT-PCR). We also used calcium quantification, Alizarin red staining and alkaline phosphatase (ALP) activity to compare the two cell types. New bone tissue formed by DPPSCs was in perfect continuity with the trabecular host bone structure, and the restored bone network demonstrated high interconnectivity. Significant differences between DPPSCs and DPMSCs were observed for the expression of bone markers, calcium deposition and ALP activity during osteogenic differentiation; these criteria were higher for DPPSCs than DPMSCs. Both DPPSCs and differentiated tissue showed normal chromosomal dosage after being cultured in vitro and analysed using short-chromosome genomic hybridisation (short-CGH). This study demonstrates the stability and potential for the use of DPPSCs in bone tissue engineering applications.
Collapse
Affiliation(s)
- M Atari
- Laboratory for Regenerative Medicine, Department of Oral and Maxillofacial Surgery, College of Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain
| | | | | | | | | | | | | | | | | | | |
Collapse
|