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Mazloomnejad R, Babajani A, Kasravi M, Ahmadi A, Shariatzadeh S, Bahrami S, Niknejad H. Angiogenesis and Re-endothelialization in decellularized scaffolds: Recent advances and current challenges in tissue engineering. Front Bioeng Biotechnol 2023; 11:1103727. [PMID: 36873356 PMCID: PMC9978201 DOI: 10.3389/fbioe.2023.1103727] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 02/09/2023] [Indexed: 02/18/2023] Open
Abstract
Decellularization of tissues and organs has recently become a promising approach in tissue engineering and regenerative medicine to circumvent the challenges of organ donation and complications of transplantations. However, one main obstacle to reaching this goal is acellular vasculature angiogenesis and endothelialization. Achieving an intact and functional vascular structure as a vital pathway for supplying oxygen and nutrients remains the decisive challenge in the decellularization/re-endothelialization procedure. In order to better understand and overcome this issue, complete and appropriate knowledge of endothelialization and its determining variables is required. Decellularization methods and their effectiveness, biological and mechanical characteristics of acellular scaffolds, artificial and biological bioreactors, and their possible applications, extracellular matrix surface modification, and different types of utilized cells are factors affecting endothelialization consequences. This review focuses on the characteristics of endothelialization and how to optimize them, as well as discussing recent developments in the process of re-endothelialization.
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Affiliation(s)
- Radman Mazloomnejad
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirhesam Babajani
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Kasravi
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Armin Ahmadi
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Siavash Shariatzadeh
- Department of Surgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Soheyl Bahrami
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in AUVA Research Center, Vienna, Austria
| | - Hassan Niknejad
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Stančin P, Song MS, Alajbeg I, Mitrečić D. Human Oral Mucosa Stem Cells Increase Survival of Neurons Affected by In Vitro Anoxia and Improve Recovery of Mice Affected by Stroke Through Time-limited Secretion of miR-514A-3p. Cell Mol Neurobiol 2022:10.1007/s10571-022-01276-7. [PMID: 36083390 DOI: 10.1007/s10571-022-01276-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/17/2022] [Indexed: 11/03/2022]
Abstract
The success rate of regenerative medicine largely depends on the type of stem cells applied in such procedures. Consequently, to achieve the needed level for clinical standardization, we need to investigate the viability of accessible sources with sufficient quantity of cells. Since the oral region partly originates from the neural crest, which naturally develops in niche with decreased levels of oxygen, the main goal of this work was to test if human oral mucosa stem cells (hOMSC) might be used to treat neurons damaged by anoxia. Here we show that hOMSC are more resistant to anoxia than human induced pluripotent stem cells and that they secrete BDNF, GDNF, VEGF and NGF. When hOMSC were added to human neurons damaged by anoxia, they significantly improved their survival. This regenerative capability was at least partly achieved through miR-514A-3p and SHP-2 and it decreased in hOMSC exposed to neural cells for 14 or 28 days. In addition, the beneficial effect of hOMSC were also confirmed in mice affected by stroke. Hence, in this work we have confirmed that hOMSC, in a time-limited manner, improve the survival of anoxia-damaged neurons and significantly contribute to the recovery of experimental animals following stroke.
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Affiliation(s)
- Paula Stančin
- Laboratory for Stem Cells, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | | | - Ivan Alajbeg
- Department of Oral Medicine, University of Zagreb School of Dental Medicine and University Hospital Centre Zagreb, Zagreb, Croatia
| | - Dinko Mitrečić
- Laboratory for Stem Cells, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia.
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3
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Singh M, Jain M, Bose S, Halder A, Nag TC, Dinda AK, Mohanty S. 22(R)-hydroxycholesterol for dopaminergic neuronal specification of MSCs and amelioration of Parkinsonian symptoms in rats. Cell Death Dis 2021; 7:13. [PMID: 33454721 PMCID: PMC7811530 DOI: 10.1038/s41420-020-00351-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/20/2020] [Accepted: 09/01/2020] [Indexed: 02/07/2023]
Abstract
Oxysterols play vital roles in the human body, ranging from cell cycle regulation and progression to dopaminergic neurogenesis. While naïve human mesenchymal stem cells (hMSCs) have been explored to have neurogenic effect, there is still a grey area to explore their regenerative potential after in vitro differentiation. Hence, in the current study, we have investigated the neurogenic effect of 22(R)-hydroxycholesterol (22-HC) on hMSCs obtained from bone marrow, adipose tissue and dental pulp. Morphological and morphometric analysis revealed physical differentiation of stem cells into neuronal cells. Detailed characterization of differentiated cells affirmed generation of neuronal cells in culture. The percentage of generation of non-DA cells in the culture confirmed selective neurogenic potential of 22-HC. We substantiated the efficacy of these cells in neuro-regeneration by transplanting them into Parkinson's disease Wistar rat model. MSCs from dental pulp had maximal regenerative effect (with 80.20 ± 1.5% in vitro differentiation efficiency) upon transplantation, as shown by various behavioural examinations and immunohistochemical tests. Subsequential analysis revealed that 22-HC yields a higher percentage of functional DA neurons and has differential effect on various tissue-specific primary human MSCs. 22-HC may be used for treating Parkinson's disease in future with stem cells.
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Affiliation(s)
- Manisha Singh
- grid.413618.90000 0004 1767 6103Stem Cell Facility (DBT-Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, 110029 India ,grid.21107.350000 0001 2171 9311The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Manish Jain
- grid.413618.90000 0004 1767 6103Department of Reproductive Biology, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Samrat Bose
- grid.413618.90000 0004 1767 6103Department of Physiology, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Ashutosh Halder
- grid.413618.90000 0004 1767 6103Department of Reproductive Biology, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Tapas Chandra Nag
- grid.413618.90000 0004 1767 6103Sophisticated Analytical Instrumentation Facility, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Amit Kumar Dinda
- grid.413618.90000 0004 1767 6103Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Sujata Mohanty
- grid.413618.90000 0004 1767 6103Stem Cell Facility (DBT-Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, 110029 India
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4
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Kohn C, Klemens JM, Kascholke C, Murthy NS, Kohn J, Brandenburger M, Hacker MC. Dual-component collagenous peptide/reactive oligomer hydrogels as potential nerve guidance materials - from characterization to functionalization. Biomater Sci 2018; 4:1605-1621. [PMID: 27722483 DOI: 10.1039/c6bm00397d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Toward a new generation of improved nerve guidance conduits (NGCs), novel biomaterials are required to address pressing clinical shortcomings in peripheral nerve regeneration (PNR) and to promote biological performance. A dual-component hydrogel system formed by cross-linking reaction between maleic anhydride groups in an oligomeric building block for cross-linking of free amine functionalities in partially hydrolyzed collagen is formulated for continuous processing and NGC fabrication. The influence of the gelation base is optimized for processing from a double syringe delivery system with a static mixer. A hydrophilic low-concentrated base was introduced to control network formation and to utilize highly reactive macromers for gelation. Cross-linking extent and building block conversion were improved and homogenous monoliths were fabricated. Chemically derivatized hydrogels were obtained by conversion of a fraction of anhydride groups in the oligomeric precursor with monovalent primary amine-containing grafting molecules prior to gelation. Network stability in functionalized hydrogels was maintained and cationic moieties were implement to the gel that promoted in vitro cell attachment and spreading irrespective of mechanical stiffness. A molding strategy was introduced that allowed for fabrication of flexible tubular conduits in tunable dimensions and with chemically patterned structures. These hydrogel-based conduits hold promise for the next generation NGCs with integrated chemical cues for PNR.
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Affiliation(s)
- C Kohn
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - J M Klemens
- Fraunhofer Research Institution for Marine Biotechnology EMB, 23562 Lübeck, Germany
| | - C Kascholke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - N S Murthy
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8066, USA
| | - J Kohn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8066, USA
| | - M Brandenburger
- Fraunhofer Research Institution for Marine Biotechnology EMB, 23562 Lübeck, Germany
| | - M C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
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Singh M, Kakkar A, Sharma R, Kharbanda OP, Monga N, Kumar M, Chowdhary S, Airan B, Mohanty S. Synergistic Effect of BDNF and FGF2 in Efficient Generation of Functional Dopaminergic Neurons from human Mesenchymal Stem Cells. Sci Rep 2017; 7:10378. [PMID: 28871128 PMCID: PMC5583182 DOI: 10.1038/s41598-017-11028-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 07/31/2017] [Indexed: 12/24/2022] Open
Abstract
To understand the process of neurogenesis, generation of functional dopaminergic (DAergic) neurons from human mesenchymal stem cells (hMSCs) is important. BDNF has been reported to be responsible for inducing neuronal maturation and functionality. Previously, we have reported the efficient generation of neurons from human bone marrow derived MSCs using FGF2 alone. We hypothesize that hMSCs from various tissues [(bone marrow (BM), adipose tissue (AD) and dental pulp (DP)], if treated with BDNF on 9th day of induction, alongwith FGF2 will generate functional DAergic neurons. Hence, cells were characterized at morphometric, transcription and translational levels for various markers like MAP2, TH, NGN2, PITX3, DAT, synaptophysin, Kv4.2 and SCN5A. Functionality of in vitro generated neurons was studied by calcium ion imaging. Result analysis depicted that BDNF has effect on expression of dopaminergic neuronal markers at gene and protein levels and functionality of neurons. Among these hMSCs, DP-MSC showed significantly better neuronal characteristics in terms of morphology, expression of neuronal markers and foremost, functionality of neurons. From the present study, therefore, we concluded that i) BDNF has additive effect on neuronal characteristics and functionality ii) DP-MSC are better MSC candidate to study DAergic neurogenesis and perform future studies.
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Affiliation(s)
- Manisha Singh
- Stem Cell Facility (DBT- Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, India
| | - Anupama Kakkar
- Stem Cell Facility (DBT- Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, India
| | - Rinkey Sharma
- Stem Cell Facility (DBT- Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, India
| | - O P Kharbanda
- Department of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research (CDER), All India Institute of Medical Sciences, New Delhi, India
| | - Nitika Monga
- Department of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research (CDER), All India Institute of Medical Sciences, New Delhi, India
| | - Manish Kumar
- Institute of Genomics and Integrative Biology, New Delhi, India
| | | | - Balram Airan
- Department of Cardiothoracic and Vascular Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Sujata Mohanty
- Stem Cell Facility (DBT- Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, India.
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6
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Combining NT3-overexpressing MSCs and PLGA microcarriers for brain tissue engineering: A potential tool for treatment of Parkinson's disease. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:934-943. [PMID: 28482609 DOI: 10.1016/j.msec.2017.02.178] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 01/03/2017] [Accepted: 02/28/2017] [Indexed: 12/18/2022]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder that characterized by destruction of substantia nigrostriatal pathway due to the loss of dopaminergic (DA) neurons. Regardless of substantial efforts for treatment of PD in recent years, an effective therapeutic strategy is still missing. In a multidisciplinary approach, bone marrow derived mesenchymal stem cells (BMSCs) are genetically engineered to overexpress neurotrophin-3 (nt-3 gene) that protect central nervous system tissues and stimulates neuronal-like differentiation of BMSCs. Poly(lactic-co-glycolic acid) (PLGA) microcarriers are designed as an injectable scaffold and synthesized via double emulsion method. The surface of PLGA microcarriers are functionalized by collagen as a bioadhesive agent for improved cell attachment. The results demonstrate effective overexpression of NT-3. The expression of tyrosine hydroxylase (TH) in transfected BMSCs reveal that NT-3 promotes the intracellular signaling pathway of DA neuron differentiation. It is also shown that transfected BMSCs are successfully attached to the surface of microcarriers. The presence of dopamine in peripheral media of cell/microcarrier complex reveals that BMSCs are successfully differentiated into dopaminergic neuron. Our approach that sustains presence of growth factor can be suggested as a novel complementary therapeutic strategy for treatment of Parkinson disease.
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Koennecke M, Böscke R, Pfannerstill AC, Reers S, Elsner M, Fell B, Richter A, Bruchhage KL, Schumann S, Pries R, Klimek L, Wollenberg B. Neuronal Differentiation Capability of Nasal Polyps of Chronic Rhinosinusitis. Arch Immunol Ther Exp (Warsz) 2017; 65:431-443. [PMID: 28280847 DOI: 10.1007/s00005-017-0456-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 12/16/2016] [Indexed: 12/20/2022]
Abstract
Chronic rhinosinusitis with nasal polyps is considered a subgroup of chronic rhinosinusitis and a significant health problem, but the pathogenesis remains unclear to date. Therefore, we investigated the stemness to determine the role of stem cells in nasal polyps, with additional analysis of the neuronal differentiation potential of nasal polyp cells. We determined gene and protein expression profiles of stem cells in nasal polyp tissues, using whole genome microarray, quantitative real-time PCR (qPCR), immunohistochemistry, and flow cytometry. To evaluate the neuronal differentiation potential of nasal polyp cells, we used an efficient xenogeneic co-culture model with unsliced adult rat brain biopsies, followed by qPCR, immunohistochemistry, and growth factor antibody arrays. During gene expression analysis and immunohistochemistry, we were able to detect different stem cell markers, like Oct-4, Sox2, Klf4, c-Myc, ABCG2, Nanog, CD133, and Nestin, which confirmed the existence of stem cell like cells within nasal polyps. In addition, co-culture experiments give evidence for a guided differentiation into the neuronal lineage by overexpression of Nestin, Neurofilament, and GM-CSF. Our study demonstrated the expression of stem cell-related markers in nasal polyps. Furthermore, we characterized, for the first time, the stemness and neuronal differentiation potential of nasal polyp cells. These results gave new insights into the pathogenesis of nasal polyps and its therapeutic effectiveness could represent a promising strategy in the future.
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Affiliation(s)
- Michael Koennecke
- Department of Otorhinolaryngology, University Medical Center Schleswig-Holstein, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.
| | - Robert Böscke
- Department of Otorhinolaryngology, University Medical Center Schleswig-Holstein, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Ann-Christin Pfannerstill
- Department of Otorhinolaryngology, University Medical Center Schleswig-Holstein, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Stefan Reers
- Department of Otorhinolaryngology, University Medical Center Schleswig-Holstein, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Martina Elsner
- Fraunhofer Research Institution for Marine Biotechnology, EMB, Lübeck, Germany
| | - Benjamin Fell
- Fraunhofer Research Institution for Marine Biotechnology, EMB, Lübeck, Germany
| | - Anja Richter
- Fraunhofer Research Institution for Marine Biotechnology, EMB, Lübeck, Germany
| | - Karl-Ludwig Bruchhage
- Department of Otorhinolaryngology, University Medical Center Schleswig-Holstein, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Sandra Schumann
- Fraunhofer Research Institution for Marine Biotechnology, EMB, Lübeck, Germany
| | - Ralph Pries
- Department of Otorhinolaryngology, University Medical Center Schleswig-Holstein, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Ludger Klimek
- Center for Rhinology and Allergology, Wiesbaden, Germany
| | - Barbara Wollenberg
- Department of Otorhinolaryngology, University Medical Center Schleswig-Holstein, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
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8
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LPS-Stimulated Human Skin-Derived Stem Cells Enhance Neo-Vascularization during Dermal Regeneration. PLoS One 2015; 10:e0142907. [PMID: 26565617 PMCID: PMC4643997 DOI: 10.1371/journal.pone.0142907] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 10/28/2015] [Indexed: 11/26/2022] Open
Abstract
High numbers of adult stem cells are still required to improve the formation of new vessels in scaffolds to accelerate dermal regeneration. Recent data indicate a benefit for vascularization capacity by stimulating stem cells with lipopolysaccharide (LPS). In this study, stem cells derived from human skin (SDSC) were activated with LPS and seeded in a commercially available dermal substitute to examine vascularization in vivo. Besides, in vitro assays were performed to evaluate angiogenic factor release and tube formation ability. Results showed that LPS-activated SDSC significantly enhanced vascularization of the scaffolds, compared to unstimulated stem cells in vivo. Further, in vitro assays confirmed higher secretion rates of proangiogenic as well as proinflammatoric factors in the presence of LPS-activated SDSC. Our results suggest that combining activated stem cells and a dermal substitute is a promising option to enhance vascularization in scaffold-mediated dermal regeneration.
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Mariani M, Karki R, Spennato M, Pandya D, He S, Andreoli M, Fiedler P, Ferlini C. Class III β-tubulin in normal and cancer tissues. Gene 2015; 563:109-14. [PMID: 25839941 DOI: 10.1016/j.gene.2015.03.061] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/26/2015] [Accepted: 03/27/2015] [Indexed: 12/13/2022]
Abstract
Microtubules are polymeric structures composed of tubulin subunits. Each subunit consists of a heterodimer of α- and β-tubulin. At least seven β-tubulin isotypes, or classes, have been identified in human cells, and constitutive isotype expression appears to be tissue specific. Class III β-tubulin (βIII-tubulin) expression is normally confined to testes and tissues derived from neural cristae. However, its expression can be induced in other tissues, both normal and neoplastic, subjected to a toxic microenvironment characterized by hypoxia and poor nutrient supply. In this review, we will summarize the mechanisms underlying βIII-tubulin constitutive and induced expression. We will also illustrate its capacity to serve as a biomarker of neural commitment in normal tissues and as a pure prognostic biomarker in cancer patients.
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Affiliation(s)
| | - Roshan Karki
- Danbury Hospital Research Institute, Danbury, CT, USA
| | | | - Deep Pandya
- Danbury Hospital Research Institute, Danbury, CT, USA
| | - Shiquan He
- Danbury Hospital Research Institute, Danbury, CT, USA
| | | | - Paul Fiedler
- Danbury Hospital Research Institute, Danbury, CT, USA
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10
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Nagel S, Rohr F, Weber C, Kier J, Siemers F, Kruse C, Danner S, Brandenburger M, Matthiessen AE. Multipotent nestin-positive stem cells reside in the stroma of human eccrine and apocrine sweat glands and can be propagated robustly in vitro. PLoS One 2013; 8:e78365. [PMID: 24205211 PMCID: PMC3813437 DOI: 10.1371/journal.pone.0078365] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 09/18/2013] [Indexed: 01/24/2023] Open
Abstract
Human skin harbours multiple different stem cell populations. In contrast to the relatively well-characterized niches of epidermal and hair follicle stem cells, the localization and niches of stem cells in other human skin compartments are as yet insufficiently investigated. Previously, we had shown in a pilot study that human sweat gland stroma contains Nestin-positive stem cells. Isolated sweat gland stroma-derived stem cells (SGSCs) proliferated in vitro and expressed Nestin in 80% of the cells. In this study, we were able to determine the precise localization of Nestin-positive cells in both eccrine and apocrine sweat glands of human axillary skin. We established a reproducible isolation procedure and characterized the spontaneous, long-lasting multipotent differentiation capacity of SGSCs. Thereby, a pronounced ectodermal differentiation was observed. Moreover, the secretion of prominent cytokines demonstrated the immunological potential of SGSCs. The comparison to human adult epidermal stem cells (EpiSCs) and bone marrow stem cells (BMSCs) revealed differences in protein expression and differentiation capacity. Furthermore, we found a coexpression of the stem cell markers Nestin and Iα6 within SGSCs and human sweat gland stroma. In conclusion the initial results of the pilot study were confirmed, indicating that human sweat glands are a new source of unique stem cells with multilineage differentiation potential, high proliferation capacity and remarkable self renewal. With regard to the easy accessibility of skin tissue biopsies, an autologous application of SGSCs in clinical therapies appears promising.
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Affiliation(s)
- Sabine Nagel
- Fraunhofer Research Institution for Marine Biotechnology, Lübeck, Germany
| | - Franziska Rohr
- Fraunhofer Research Institution for Marine Biotechnology, Lübeck, Germany
| | - Caroline Weber
- Fraunhofer Research Institution for Marine Biotechnology, Lübeck, Germany
| | - Janina Kier
- Fraunhofer Research Institution for Marine Biotechnology, Lübeck, Germany
| | - Frank Siemers
- Department of Plastic and Hand Surgery, University of Lübeck, Lübeck, Germany
| | - Charli Kruse
- Fraunhofer Research Institution for Marine Biotechnology, Lübeck, Germany
| | - Sandra Danner
- Fraunhofer Research Institution for Marine Biotechnology, Lübeck, Germany
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11
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Quantum Dots Do Not Alter the Differentiation Potential of Pancreatic Stem Cells and Are Distributed Randomly among Daughter Cells. Int J Cell Biol 2013; 2013:918242. [PMID: 23997768 PMCID: PMC3742022 DOI: 10.1155/2013/918242] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 06/21/2013] [Accepted: 06/21/2013] [Indexed: 01/08/2023] Open
Abstract
With the increasing relevance of cell-based therapies, there is a demand for cell-labeling techniques for in vitro and in vivo studies. For the reasonable tracking of transplanted stem cells in animal models, the usage of quantum dots (QDs) for sensitive cellular imaging has major advances. QDs could be delivered to the cytoplasm of the cells providing intense and stable fluorescence. Although QDs are emerging as favourable nanoparticles for bioimaging, substantial investigations are still required to consider their application for adult stem cells. Therefore, rat pancreatic stem cells (PSCs) were labeled with different concentrations of CdSe quantum dots (Qtracker 605 nanocrystals). The QD labeled PSCs showed normal proliferation and their usual spontaneous differentiation potential in vitro. The labeling of the cell population was concentration dependent, with increasing cell load from 5 nM QDs to 20 nM QDs. With time-lapse microscopy, we observed that the transmission of the QD particles during cell divisions was random, appearing as equal or unequal transmission to daughter cells. We report here that QDs offered an efficient and nontoxic way to label pancreatic stem cells without genetic modifications. In summary, QD nanocrystals are a promising tool for stem cell labeling and facilitate tracking of transplanted cells in animal models.
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12
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Guo J, Niu R, Huang W, Zhou M, Shi J, Zhang L, Liao H. Growth factors from tumor microenvironment possibly promote the proliferation of glioblastoma-derived stem-like cells in vitro. Pathol Oncol Res 2012; 18:1047-57. [PMID: 22996727 DOI: 10.1007/s12253-012-9543-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Accepted: 05/22/2012] [Indexed: 12/18/2022]
Abstract
Glioblastoma multiform is a lethal brain glial tumor characterized by low survival and high recurrence, partially attributed to the glioblastoma stem cells according to recent researches. Microenvironment or niche in tumor tissue is believed to provide essential support for the aberrant growth of tumor stem cells. In order to explore the effect of growth factors in tumor microenvironment on glioblastoma stem cells behavior, glioblastoma-derived stem-like cells (GDSCs) were isolated from adult human glioblastoma specimen with antibody against surface marker CD133 and were co-cultured with various tumor cells including U87MG cells, unsorted glioblastoma tumor cells, CD133(-) cells and normal rat primary astrocytes. Results suggested that tumor cells could promote GDSCs proliferation while non-tumor cells could not, and several growth factors were exclusively detected in the co-culture system with tumor cells. It was concluded that growth factors derived from tumor microenvironment possibly contributed to the uncontrolled proliferation of GDSCs.
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Affiliation(s)
- JingJing Guo
- Neurobiology Lab, Jiangsu Center for Drug Screening, China Pharmaceutical University, 24# Tong Jiaxiang road, Nanjing, 210009, Peoples Republic of China
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