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Kamate W, Baad R, Vibhute N, Belgaumi U, Kadashetti V, Gugwad S. Trending Speculations of Tumor-Initiating Cells in Squamous Cell Cancers of Head and Neck. Int J Stem Cells 2017; 10:21-27. [PMID: 28446006 PMCID: PMC5488773 DOI: 10.15283/ijsc16065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2017] [Indexed: 12/27/2022] Open
Abstract
Tumor-initiating cells are a diminutive subpopulation of stem cells that have ability of long term self-renewal and generation of varied traits of tumor cell population. Understanding the concept of tumor-initiating cells may have a great implicative intimation for our comprehension of cancer pathobiology and for the delineation of new therapies directed towards these stem cells. The present review is an endeavor to conceptualize the role of tumor-initiating cells in the Squamous Cell Cancers (SCC) of head and neck, their role in tumorigenesis and the possible supplementary approach in the latest treatment modalities.
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Affiliation(s)
- Wasim Kamate
- Department of Oral Pathology and Microbiology, School of Dental Sciences, Krishna Institute of Medical Sciences Deemed University (KIMSDU), Karad, India
| | - Rajendra Baad
- Department of Oral Pathology and Microbiology, School of Dental Sciences, Krishna Institute of Medical Sciences Deemed University (KIMSDU), Karad, India
| | - Nupura Vibhute
- Department of Oral Pathology and Microbiology, School of Dental Sciences, Krishna Institute of Medical Sciences Deemed University (KIMSDU), Karad, India
| | - Uzma Belgaumi
- Department of Oral Pathology and Microbiology, School of Dental Sciences, Krishna Institute of Medical Sciences Deemed University (KIMSDU), Karad, India
| | - Vidya Kadashetti
- Department of Oral Pathology and Microbiology, School of Dental Sciences, Krishna Institute of Medical Sciences Deemed University (KIMSDU), Karad, India
| | - Sushma Gugwad
- Department of Oral Pathology and Microbiology, School of Dental Sciences, Krishna Institute of Medical Sciences Deemed University (KIMSDU), Karad, India
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Maragkoudaki M, Vaiopoulou A, Theodoropoulos GE, Legaki E, Sechi LA, Karamanolis G, Zografos G, Gazouli M. Specific detection of OCT4 isoforms in inflammatory bowel disease. Gut Pathog 2015; 7:25. [PMID: 26435752 PMCID: PMC4591585 DOI: 10.1186/s13099-015-0073-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 09/23/2015] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Developmentally early cells are mobilized into peripheral blood in Crohn's disease (CD) patients. OCT4, is considered to be important in sustaining the pluripotency of stem cells. OCT4 splicing variants are differentially expressed in pluripotent and non-pluripotent cells. Our study aims to investigate the expression pattern of OCT4 variants and SOX-2, an essential factor implicated in self-renewal and pluripotency, in tissue and blood samples from patients with IBD. METHODS Peripheral blood and tissue samples were collected from patients with active CD and ulcerative colitis (UC), and from healthy individuals. OCT4 expression was documented by Western blot, immunohistochemistry and by reverse transcription-real-time PCR. OCT4 isoform determination was documented using specific primers. SOX-2 expression levels were also evaluated. RESULTS OCT4 protein levels were significantly higher in CD tissue samples than in CD blood samples, and in UC tissue samples. OCT4 protein was localized mainly in the cytosol. In all samples, only the OCT4 pseudogenes and the OCT4B1 variant were detected. OCT4B1 expression levels were elevated in both tissue and blood samples from CD and UC cases compared to healthy controls. In CD patients only SOX-2 mRNA levels were found slightly increased compared to healthy controls. CONCLUSION Our results suggest that OCT4 is expressed in patients with IBD. Furthermore, we found the presence of the OCT4B1 isoform in IBD in both tissue and blood samples. Our results have shown, that developmentally early cells might be mobilized into peripheral blood as result of tissue damage, indicating a possible role of these cells in repair of injured intestinal tract.
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Affiliation(s)
- Maria Maragkoudaki
- First Department of Pediatrics, Athens University Medical School, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - Anna Vaiopoulou
- Laboratory of Biology, Department of Basic Medical Sciences, School of Medicine, University of Athens, Michalakopoulou 176, 11527 Athens, Greece
| | - George E Theodoropoulos
- Colorectal and Inflammatory Bowel Diseases Unit, First Department of Propaedeutic Surgery of Athens Medical School, Athens, Greece
| | - Evangelia Legaki
- Laboratory of Biology, Department of Basic Medical Sciences, School of Medicine, University of Athens, Michalakopoulou 176, 11527 Athens, Greece
| | - Leonardo A Sechi
- Sezione di Microbiologia e Virologia, Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Sassari, Italy
| | | | - George Zografos
- Colorectal and Inflammatory Bowel Diseases Unit, First Department of Propaedeutic Surgery of Athens Medical School, Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Department of Basic Medical Sciences, School of Medicine, University of Athens, Michalakopoulou 176, 11527 Athens, Greece
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Kidoaki S, Sakashita H. Rectified cell migration on saw-like micro-elastically patterned hydrogels with asymmetric gradient ratchet teeth. PLoS One 2013; 8:e78067. [PMID: 24147112 PMCID: PMC3798417 DOI: 10.1371/journal.pone.0078067] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 09/06/2013] [Indexed: 11/29/2022] Open
Abstract
To control cell motility is one of the essential technologies for biomedical engineering. To establish a methodology of the surface design of elastic substrate to control the long-range cell movements, here we report a sophisticated cell culture hydrogel with a micro-elastically patterned surface that allows long-range durotaxis. This hydrogel has a saw-like pattern with asymmetric gradient ratchet teeth, and rectifies random cell movements. Durotaxis only occurs at boundaries in which the gradient strength of elasticity is above a threshold level. Consequently, in gels with unit teeth patterns, durotaxis should only occur at the sides of the teeth in which the gradient strength of elasticity is above this threshold level. Therefore, such gels are expected to support the long-range biased movement of cells via a mechanism similar to the Feynman-Smoluchowski ratchet, i.e., rectified cell migration. The present study verifies this working hypothesis by using photolithographic microelasticity patterning of photocurable gelatin gels. Gels in which each teeth unit was 100–120 µm wide with a ratio of ascending:descending elasticity gradient of 1:2 and a peak elasticity of ca. 100 kPa supported the efficient rectified migration of 3T3 fibroblast cells. In addition, long-range cell migration was most efficient when soft lanes were introduced perpendicular to the saw-like patterns. This study demonstrates that asymmetric elasticity gradient patterning of cell culture gels is a versatile means of manipulating cell motility.
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Affiliation(s)
- Satoru Kidoaki
- Research Field of Biomedical and Biophysical Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
- * E-mail:
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Rönnlund D, Gad AKB, Blom H, Aspenström P, Widengren J. Spatial organization of proteins in metastasizing cells. Cytometry A 2013; 83:855-65. [DOI: 10.1002/cyto.a.22304] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 03/06/2013] [Accepted: 04/12/2013] [Indexed: 01/26/2023]
Affiliation(s)
- Daniel Rönnlund
- Department of Experimental Biomolecular Physics/Applied Physics; KTH-Royal Institute of Technology; AlbaNova University Center; Stockholm; Sweden
| | - Annica K. B. Gad
- Department of Microbiology; Tumor and Cell Biology; Karolinska Institutet; Stockholm; Sweden
| | - Hans Blom
- Department of Experimental Biomolecular Physics/Applied Physics; KTH-Royal Institute of Technology; AlbaNova University Center; Stockholm; Sweden
| | - Pontus Aspenström
- Department of Microbiology; Tumor and Cell Biology; Karolinska Institutet; Stockholm; Sweden
| | - Jerker Widengren
- Department of Experimental Biomolecular Physics/Applied Physics; KTH-Royal Institute of Technology; AlbaNova University Center; Stockholm; Sweden
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Zheng PP, van der Weiden M, van der Spek PJ, Vincent AJ, Kros JM. Intratumoral, not circulating, endothelial progenitor cells share genetic aberrations with glial tumor cells. J Cell Physiol 2013; 228:1383-90. [DOI: 10.1002/jcp.24309] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 12/07/2012] [Indexed: 12/26/2022]
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Wesley UV, Vemuganti R, Ayvaci ER, Dempsey RJ. Galectin-3 enhances angiogenic and migratory potential of microglial cells via modulation of integrin linked kinase signaling. Brain Res 2012; 1496:1-9. [PMID: 23246924 DOI: 10.1016/j.brainres.2012.12.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 11/06/2012] [Accepted: 12/07/2012] [Indexed: 12/15/2022]
Abstract
Focal cerebral ischemia initiates self-repair mechanisms that include the production of neurotrophic factors and cytokines. Galectin-3 is an important angiogenic cytokine. We have previously demonstrated that expression of galectin 3 (Gal-3), a carbohydrate binding protein is significantly upregulated in activated microglia in the brains of rats subjected to focal ischemia. Further blocking of Gal-3 function with Gal-3 neutralizing antibody decreased the microvessel density in ischemic brain. We currently show that Gal-3 significantly increases the viability of microglia BV2 cells subjected to oxygen glucose deprivation (OGD) and re-oxygenation. Exogenous Gal-3 promoted the formation of pro-angiogenic structures in an in vitro human umbilical vein endothelial (HUVEC) and BV2 cell co-culture model. Gal-3 induced angiogenesis was associated with increased expression of vascular endothelial growth factor. The conditioned medium of BV2 cells exposed to OGD contained increased Gal-3 levels, and promoted the formation of pro-angiogenic structures in an in vitro HUVEC culture model. Gal-3 also augmented the in vitro migratory potential of BV2 microglia. Gal-3 mediated functions were associated with increased levels of integrin-linked kinase (ILK) signaling as demonstrated by the impaired angiogenesis and migration of BV2 cells following targeted silencing of ILK expression by siRNA. Furthermore, we show that ILK levels correlate with the levels of phos-AKT and ERK1/2 that are downstream effectors of ILK pathway. Taken together, our studies indicate that Gal-3 contributes to angiogenesis and microglia migration that may have implications in post stroke repair.
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Affiliation(s)
- Umadevi V Wesley
- Department of Neurological Surgery, University of Wisconsin, 600 Highland Avenue, Madison, WI 53792, USA.
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Marlicz W, Zuba-Surma E, Kucia M, Blogowski W, Starzynska T, Ratajczak MZ. Various types of stem cells, including a population of very small embryonic-like stem cells, are mobilized into peripheral blood in patients with Crohn's disease. Inflamm Bowel Dis 2012; 18:1711-22. [PMID: 22238186 DOI: 10.1002/ibd.22875] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Accepted: 12/12/2011] [Indexed: 12/11/2022]
Abstract
BACKGROUND Developmentally early cells, including hematopoietic stem progenitor cells (HSPCs), mesenchymal stem cells (MSCs), endothelial progenitor cells (EPCs), and very small embryonic-like stem cells (VSELs), are mobilized into peripheral blood (PB) in response to tissue/organ injury. We sought to determine whether these cells are mobilized into PB in patients with Crohn's disease (CD). METHODS Twenty-five patients with active CD, 20 patients in clinical remission, and 25 age-matched controls were recruited and PB samples harvested. The circulating CD133+/Lin-/CD45+ and CD34+/Lin-/CD45+ cells enriched for HSPCs, CD105+/STRO-1+/CD45- cells enriched for MSCs, CD34+/KDR+/CD31+/CD45-cells enriched for EPCs, and small CXCR4+CD34+CD133+ subsets of Lin-CD45- cells that correspond to the population of VSELs were counted by fluorescence-activated cell sorting (FACS) and evaluated by direct immunofluorescence staining for pluripotency embryonic markers and by reverse-transcription polymerase chain reaction (RT-PCR) for expression of messenger (m)RNAs for a panel of genes expressed in intestine epithelial stem cells. The serum concentration of factors involved in stem cell trafficking, such as stromal derived factor-1 (SDF-1), vascular endothelial growth factor (VEGF), and hepatocyte growth factor (HGF) were measured by enzyme-linked immunosorbent assay (ELISA). RESULTS Our data indicate that cells expressing markers for MSCs, EPCs, and small Oct-4+Nanog+SSEA-4+CXCR4+lin-CD45- VSELs are mobilized into PB in CD. The mobilized cells also expressed at the mRNA level genes playing a role in development and regeneration of gastrointestinal epithelium. All these changes were accompanied by increased serum concentrations of VEGF and HGF. CONCLUSIONS CD triggers the mobilization of MSCs, EPCs, and VSELs, while the significance and precise role of these mobilized cells in repair of damaged intestine requires further study.
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Affiliation(s)
- Wojciech Marlicz
- Department of Gastroenterology, Pomeranian Medical University, Szczecin, Poland
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Ribeiro AJS, Tottey S, Taylor RWE, Bise R, Kanade T, Badylak SF, Dahl KN. Mechanical characterization of adult stem cells from bone marrow and perivascular niches. J Biomech 2012; 45:1280-7. [PMID: 22349118 DOI: 10.1016/j.jbiomech.2012.01.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 01/20/2012] [Accepted: 01/29/2012] [Indexed: 12/11/2022]
Abstract
Therapies using adult stem cells often require mechanical manipulation such as injection or incorporation into scaffolds. However, force-induced rupture and mechanosensitivity of cells during manipulation is largely ignored. Here, we image cell mechanical structures and perform a biophysical characterization of three different types of human adult stem cells: bone marrow CD34+ hematopoietic, bone marrow mesenchymal and perivascular mesenchymal stem cells. We use micropipette aspiration to characterize cell mechanics and quantify deformation of subcellular structures under force and its contribution to global cell deformation. Our results suggest that CD34+ cells are mechanically suitable for injection systems since cells transition from solid- to fluid-like at constant aspiration pressure, probably due to a poorly developed actin cytoskeleton. Conversely, mesenchymal stem cells from the bone marrow and perivascular niches are more suitable for seeding into biomaterial scaffolds since they are mechanically robust and have developed cytoskeletal structures that may allow cellular stable attachment and motility through solid porous environments. Among these, perivascular stem cells cultured in 6% oxygen show a developed cytoskeleton but a more compliant nucleus, which can facilitate the penetration into pores of tissues or scaffolds. We confirm the relevance of our measurements using cell motility and migration assays and measure survival of injected cells. Since different types of adult stem cells can be used for similar applications, we suggest considering mechanical properties of stem cells to match optimal mechanical characteristics of therapies.
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Affiliation(s)
- Alexandre J S Ribeiro
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburg, PA 15213, United States
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Alexander S, Friedl P. Cancer invasion and resistance: interconnected processes of disease progression and therapy failure. Trends Mol Med 2012; 18:13-26. [DOI: 10.1016/j.molmed.2011.11.003] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 10/07/2011] [Accepted: 11/08/2011] [Indexed: 12/27/2022]
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Borlongan CV, Glover LE, Tajiri N, Kaneko Y, Freeman TB. The great migration of bone marrow-derived stem cells toward the ischemic brain: therapeutic implications for stroke and other neurological disorders. Prog Neurobiol 2011; 95:213-28. [PMID: 21903148 PMCID: PMC3185169 DOI: 10.1016/j.pneurobio.2011.08.005] [Citation(s) in RCA: 163] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 08/10/2011] [Accepted: 08/15/2011] [Indexed: 02/08/2023]
Abstract
Accumulating laboratory studies have implicated the mobilization of bone marrow (BM)-derived stem cells in brain plasticity and stroke therapy. This mobilization of bone cells to the brain is an essential concept in regenerative medicine. Over the past ten years, mounting data have shown the ability of bone marrow-derived stem cells to mobilize from BM to the peripheral blood (PB) and eventually enter the injured brain. This homing action is exemplified in BM stem cell mobilization following ischemic brain injury. Various BM-derived cells, such as hematopoietic stem cells (HSCs), mesenchymal stem cells (MSCs), endothelial progenitor cells (EPCs) and very small embryonic-like cells (VSELs) have been demonstrated to exert therapeutic benefits in stroke. Here, we discuss the current status of these BM-derived stem cells in stroke therapy, with emphasis on possible cellular and molecular mechanisms of action that mediate the cells' beneficial effects in the ischemic brain. When possible, we also discuss the relevance of this therapeutic regimen in other central nervous system (CNS) disorders.
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Affiliation(s)
- Cesar V Borlongan
- Department of Neurosurgery and Brain Repair, University of South Florida College of Medicine, 12901 Bruce B. Downs Blvd, Tampa, FL 33612, USA.
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