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Gao L, Xiong DD, Yang X, Li JD, He RQ, Huang ZG, Lai ZF, Liu LM, Luo JY, Du XF, Zeng JH, Li MF, Li SH, Dang YW, Chen G. The expression characteristics and clinical significance of ACP6, a potential target of nitidine chloride, in hepatocellular carcinoma. BMC Cancer 2022; 22:1244. [PMID: 36456931 PMCID: PMC9714191 DOI: 10.1186/s12885-022-10292-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 10/17/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Acid phosphatase type 6 (ACP6) is a mitochondrial lipid phosphate phosphatase that played a role in regulating lipid metabolism and there is still blank in the clinico-pathological significance and functional roles of ACP6 in human cancers. No investigations have been conducted on ACP6 in hepatocellular carcinoma (HCC) up to date. METHODS Herein, we appraised the clinico-pathological significance of ACP6 in HCC via organizing expression profiles from globally multi-center microarrays and RNA-seq datasets. The molecular basis of ACP6 in HCC was explored through multidimensional analysis. We also carried out in vitro and in vivo experiment on nude mice to investigate the effect of knocking down ACP6 expression on biological functions of HCC cells, and to evaluate the expression variance of ACP6 in xenograft of HCC tissues before and after the treatment of NC. RESULTS ACP6 displayed significant overexpression in HCC samples (standard mean difference (SMD) = 0.69, 95% confidence interval (CI) = 0.56-0.83) and up-regulated ACP6 performed well in screening HCC samples from non-cancer liver samples. ACP6 expression was also remarkably correlated with clinical progression and worse overall survival of HCC patients. There were close links between ACP6 expression and immune cells including B cells, CD8 + T cells and naive CD4 + T cells. Co-expressed genes of ACP6 mainly participated in pathways including cytokine-cytokine receptor interaction, glucocorticoid receptor pathway and NABA proteoglycans. The proliferation and migration rate of HCC cells transfected with ACP6 siRNA was significantly suppressed compared with those transfected with negative control siRNA. ACP6 expression was significantly inhibited by nitidine chloride (NC) in xenograft HCC tissues. CONCLUSIONS ACP6 expression may serve as novel clinical biomarker indicating the clinical development of HCC and ACP6 might be potential target of anti-cancer effect by NC in HCC.
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Affiliation(s)
- Li Gao
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Dan-Dan Xiong
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Xia Yang
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Jian-Di Li
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Rong-Quan He
- grid.412594.f0000 0004 1757 2961Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Zhi-Guang Huang
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Ze-Feng Lai
- grid.256607.00000 0004 1798 2653Department of Pharmacy, Guangxi Medical University Cancer Hospital, No.71 Hedi Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Li-Min Liu
- grid.256607.00000 0004 1798 2653Department of Toxicology, College of Pharmacy, Guangxi Medical University, No.22 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Jia-Yuan Luo
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Xiu-Fang Du
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Jiang-Hui Zeng
- grid.256607.00000 0004 1798 2653Department of Clinical Laboratory, The Third Affiliated Hospital of Guangxi Medical University/Nanning Second People’s Hospital, No. 13 Dancun Road, Guangxi Zhuang Autonomous Region, Nanning, 530031 People’s Republic of China
| | - Ming-Fen Li
- grid.411863.90000 0001 0067 3588Laboratory Department, The First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, No. 89-9 Dongge Road, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Sheng-Hua Li
- grid.412594.f0000 0004 1757 2961Department of Urology Surgery, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Yi-Wu Dang
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
| | - Gang Chen
- grid.412594.f0000 0004 1757 2961Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Rd, Guangxi Zhuang Autonomous Region, Nanning, 530021 People’s Republic of China
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Kopeć K, Wojasiński M, Ciach T. Superhydrophilic Polyurethane/Polydopamine Nanofibrous Materials Enhancing Cell Adhesion for Application in Tissue Engineering. Int J Mol Sci 2020; 21:ijms21186798. [PMID: 32947971 PMCID: PMC7555238 DOI: 10.3390/ijms21186798] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/14/2020] [Accepted: 09/14/2020] [Indexed: 12/20/2022] Open
Abstract
The use of nanofibrous materials in the field of tissue engineering requires a fast, efficient, scalable production method and excellent wettability of the obtained materials, leading to enhanced cell adhesion. We proposed the production method of superhydrophilic nanofibrous materials in a two-step process. The process is designed to increase the wettability of resulting scaffolds and to enhance the rate of fibroblast cell adhesion. Polyurethane (PU) nanofibrous material was produced in the solution blow spinning process. Then the PU fibers surface was modified by dopamine polymerization in water solution. Two variants of the modification were examined: dopamine polymerization under atmospheric oxygen (V-I) and using sodium periodate as an oxidative agent (V-II). Hydrophobic PU materials after the treatment became highly hydrophilic, regardless of the modification variant. This effect originates from polydopamine (PDA) coating properties and nanoscale surface structures. The modification improved the mechanical properties of the materials. Materials obtained in the V-II process exhibit superior properties over those from the V-I, and require shorter modification time (less than 30 min). Modifications significantly improved fibroblasts adhesion. The cells spread after 2 h on both PDA-modified PU nanofibrous materials, which was not observed for unmodified PU. Proposed technology could be beneficial in applications like scaffolds for tissue engineering.
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Affiliation(s)
- Kamil Kopeć
- Faculty of Chemical and Process Engineering, Biomedical Engineering Laboratory, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (M.W.); (T.C.)
- Correspondence: ; Tel.: +48-790-829-799
| | - Michał Wojasiński
- Faculty of Chemical and Process Engineering, Biomedical Engineering Laboratory, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (M.W.); (T.C.)
| | - Tomasz Ciach
- Faculty of Chemical and Process Engineering, Biomedical Engineering Laboratory, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (M.W.); (T.C.)
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
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Pan H, Xue W, Zhao W, Schachner M. Expression and function of chondroitin 4-sulfate and chondroitin 6-sulfate in human glioma. FASEB J 2020; 34:2853-2868. [PMID: 31908019 DOI: 10.1096/fj.201901621rrr] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 12/10/2019] [Accepted: 12/11/2019] [Indexed: 02/05/2023]
Abstract
Key molecules promoting migration and invasion exist in the extracellular matrix, and include chondroitin 4-sulfate (C4S) and chondroitin 6-sulfate (C6S), functionally important carbohydrate chains of chondroitin sulfate proteoglycans that participate in regulating cancer development. Here, we show that C4S and C6S expression is upregulated in human glioma tissues, when compared to normal brain tissue, and that the extent of upregulation positively correlated with glioma malignancy. Treatment of cultured glioma cells with C4S and C6S enhanced cell viability, migration, and invasion, increased MMP-2 and MMP-9 levels, enhanced N-cadherin, but reduced E-cadherin expression. Inhibition of expression of the two CS synthetic enzymes chondroitin 4-O-sulfotransferase-1 (C4ST-1/CHST11) and chondroitin 6-O-sulfotransferase-1 (C6ST-1/CHST3) suppressed cell viability, migration and invasion, reduced MMP-2 and MMP-9 expression, and reduced N-cadherin expression, but increased E-cadherin levels. The C4S- and C6S-enhanced epithelial-to-mesenchymal transition and expression of MMP-2 occurred via activation of the PI3K/AKT signaling pathway, known to be involved in promoting cell migration and invasion. In immune-deficient larval zebrafish, C4S and C6S increased the numbers of viable tumor cells, thereby promoting glioma cell proliferation. The present observations point to a novel role of C4S and C6S in human glioma cell functions, thus possibly representing targets in glioma therapy.
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Affiliation(s)
- Hongchao Pan
- Center for Neuroscience, Shantou University Medical College, Shantou, China
- Guangdong Provincial Key Laboratory for Breast Cancer Diagnosis and Treatment, Cancer Hospital of Shantou University Medical College, Shantou, China
| | - Weikang Xue
- Center for Neuroscience, Shantou University Medical College, Shantou, China
| | - Weijiang Zhao
- Center for Neuroscience, Shantou University Medical College, Shantou, China
| | - Melitta Schachner
- Center for Neuroscience, Shantou University Medical College, Shantou, China
- Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ, USA
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Abstract
Proteoglycans (PGs) regulate diverse functions in the central nervous system (CNS) by interacting with a number of growth factors, matrix proteins, and cell surface molecules. Heparan sulfate (HS) and chondroitin sulfate (CS) are two major glycosaminoglycans present in the PGs of the CNS. The functionality of these PGs is to a large extent dictated by the fine sulfation patterns present on their glycosaminoglycan (GAG) chains. In the past 15 years, there has been a significant expansion in our knowledge on the role of HS and CS chains in various neurological processes, such as neuronal growth, regeneration, plasticity, and pathfinding. However, defining the relation between distinct sulfation patterns of the GAGs and their functionality has thus far been difficult. With the emergence of novel tools for the synthesis of defined GAG structures, and techniques for their characterization, we are now in a better position to explore the structure-function relation of GAGs in the context of their sulfation patterns. In this review, we discuss the importance of GAGs on CNS development, injury, and disorders with an emphasis on their sulfation patterns. Finally, we outline several GAG-based therapeutic strategies to exploit GAG chains for ameliorating various CNS disorders.
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Affiliation(s)
- Vimal P Swarup
- Department of Bioengineering, University of Utah, Salt Lake City, 84112 UT , USA
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Mendes-de-Aguiar CBN, Alchini R, Decker H, Alvarez-Silva M, Tasca CI, Trentin AG. Thyroid hormone increases astrocytic glutamate uptake and protects astrocytes and neurons against glutamate toxicity. J Neurosci Res 2008; 86:3117-25. [DOI: 10.1002/jnr.21755] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Khurana M, Collins HA, Karotki A, Anderson HL, Cramb DT, Wilson BC. Quantitative in vitro demonstration of two-photon photodynamic therapy using photofrin and visudyne. Photochem Photobiol 2008; 83:1441-8. [PMID: 18028219 DOI: 10.1111/j.1751-1097.2007.00185.x] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photodynamic therapy (PDT), the combined action of a photosensitizer and light to produce a cytotoxic effect, is an approved therapy for a number of diseases. At present, clinical PDT treatments involve one-photon excitation of the photosensitizer. A major limitation is that damage may be caused to healthy tissues that have absorbed the drug and lie in the beam path. Two-photon excitation may minimize this collateral damage, as the probability of absorption increases with the square of the light intensity, enabling spatial confinement of the photosensitizer activation. A potential application is the treatment of the wet-form of age-related macular degeneration, the foremost cause of central vision loss in the elderly. Herein, the commercial photosensitizers Visudyne and Photofrin are used to demonstrate quantitative in vitro two-photon PDT. A uniform layer of endothelial cells (YPEN-1) was irradiated with a Ti:sapphire laser (300 fs, 865 nm, 90 MHz) using a confocal scanning microscope. Quantification of the two-photon PDT effect was achieved using the permeability stain Hoechst 33258 and a SYTOX Orange viability stain. Visudyne was found to be around seven times more effective as a two-photon photosensitizer than Photofrin under the conditions used, consistent with its higher two-photon absorption cross-section. We also demonstrate for the first time the quadratic intensity dependence of cellular two-photon PDT. This simple in vitro method for quantifying the efficacy of photosensitizers for two-photon excited PDT will be valuable to test specifically designed two-photon photosensitizers before proceeding to in vivo studies in preclinical animal models.
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Affiliation(s)
- Mamta Khurana
- Department of Medical Biophysics, Ontario Cancer Institute, University of Toronto, Toronto, ON, Canada
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Galante LL, Schwarzbauer JE. Requirements for sulfate transport and the diastrophic dysplasia sulfate transporter in fibronectin matrix assembly. ACTA ACUST UNITED AC 2007; 179:999-1009. [PMID: 18056413 PMCID: PMC2099202 DOI: 10.1083/jcb.200707150] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Diastrophic dysplasia sulfate transporter (DTDST) is a sulfate/chloride antiporter whose function is impaired in several human chondrodysplasias. We show that DTDST is upregulated by dexamethasone stimulation of HT1080 fibrosarcoma cells and is required for fibronectin (FN) extracellular matrix deposition by these cells. DTDST imports sulfate for the modification of glycosaminoglycans. We find that N-sulfation of these chains is important for FN matrix assembly and that sulfation of cell surface proteoglycans is reduced in the absence of DTDST. Of the candidate HT1080 cell surface proteoglycans, only loss of syndecan-2 compromises FN assembly, as shown by syndecan-2 small interfering RNA knockdown. DTDST is both necessary and sufficient to induce FN matrix assembly in HT1080 cells. Knockdown of DTDST ablates FN matrix, whereas its overexpression increases assembly without dexamethasone stimulation. These results identify a previously unrecognized regulatory pathway for matrix assembly via modulation of a sulfate transporter and proteoglycan sulfation. These data raise the possibility that FN assembly defects contribute to chondrodysplasias.
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Affiliation(s)
- Leontine L Galante
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA
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Brachvogel B, Pausch F, Farlie P, Gaipl U, Etich J, Zhou Z, Cameron T, von der Mark K, Bateman JF, Pöschl E. Isolated Anxa5+/Sca-1+ perivascular cells from mouse meningeal vasculature retain their perivascular phenotype in vitro and in vivo. Exp Cell Res 2007; 313:2730-43. [PMID: 17543301 DOI: 10.1016/j.yexcr.2007.04.031] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2006] [Revised: 04/18/2007] [Accepted: 04/27/2007] [Indexed: 01/27/2023]
Abstract
Pericytes are closely associated with endothelial cells, contribute to vascular stability and represent a potential source of mesenchymal progenitor cells. Using the specifically expressed annexin A5-LacZ fusion gene (Anxa5-LacZ), it became possible to isolate perivascular cells (PVC) from mouse tissues. These cells proliferate and can be cultured without undergoing senescence for multiple passages. PVC display phenotypic characteristics of pericytes, as they express pericyte-specific markers (NG2-proteoglycan, desmin, alphaSMA, PDGFR-beta). They also express stem cell marker Sca-1, whereas endothelial (PECAM), hematopoietic (CD45) or myeloid (F4/80, CD11b) lineage markers are not detectable. These characteristics are in common with the pericyte-like cell line 10T1/2. PVC also display a phagocytoic activity higher than 10T1/2 cells. During coculture with endothelial cells both cell types stimulate angiogenic processes indicated by an increased expression of PECAM in endothelial cells and specific deposition of basement membrane proteins. PVC show a significantly increased induction of endothelial specific PECAM expression compared to 10T1/2 cells. Accordingly, in vivo grafts of PVC aggregates onto chorioallantoic membranes of quail embryos recruit endothelial cells, get highly vascularized and deposit basement membrane components. These data demonstrate that isolated Anxa5-LacZ(+) PVC from mouse meninges retain their capacity for differentiation to pericyte-like cells and contribute to angiogenic processes.
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Affiliation(s)
- Bent Brachvogel
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany.
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Ray RM, Guo H, Patel M, Jin S, Bhattacharya S, Johnson LR. Role of myosin regulatory light chain and Rac1 in the migration of polyamine-depleted intestinal epithelial cells. Am J Physiol Gastrointest Liver Physiol 2007; 292:G983-95. [PMID: 17170026 DOI: 10.1152/ajpgi.00356.2006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We have previously shown that polyamine depletion decreased migration, Rac activation, and protein serine threonine phosphatase 2A activity. We have also shown that polyamine depletion increased cortical F-actin and decreased lamellipodia and stress fibers. In this study, we used staurosporine (STS), a potent, cell-permeable, and broad-spectrum serine/threonine kinase inhibitor, and studied migration. STS concentrations above 100 nM induced apoptosis. However, in polyamine-depleted cells, a lower concentration of STS (5 nM) increased attachment, spreading, Rac1 activation, and, subsequently, migration without causing apoptosis. STS-induced migration was completely prevented by a Rac1 inhibitor (NSC-23766) and dominant negative Rac1. These results imply that STS restores migration in polyamine-depleted cells through Rac1. The most important finding in this study was that polyamine depletion increased the association of phosphorylated myosin regulatory light chain (pThr(18)/Ser(19)-MRLC) at the cell periphery, which colocalized with thick cortical F-actin. Localization of pThr(18)- and pSer(19)-MRLC was found with stress fibers and nuclei, respectively. STS decreased the phosphorylation of cellular and peripheral pThr(18)-MRLC without any effect on nuclear pSer(19)-MRLC, dissolved thick cortical F-actin, and increased lamellipodia and stress fiber formation in polyamine-depleted cells. In control and polyamine-depleted cells, focal adhesion kinase (FAK) colocalized with stress fibers and the actin cortex, respectively. STS reorganized FAK, paxillin, and the cytoskeleton. These results suggest that polyamine depletion prevents the dephosphorylation of MRLC and thereby prevents the dynamic reorganization of the actin cytoskeleton and decreases lamellipodia formation resulting in the inhibition of migration.
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Affiliation(s)
- Ramesh M Ray
- Department of Physiology, The University of Tennessee Health Science Center, 894 Union Ave., Memphis, TN 38163, USA.
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Lobão-Soares B, Alvarez-Silva M, Mendes de Aguiar CBN, Nicolau M, Trentin AG. Undersulfation of glycosaminoglycans induced by sodium chlorate treatment affects the progression of C6 rat glioma, in-vivo. Brain Res 2007; 1131:29-36. [PMID: 17174944 DOI: 10.1016/j.brainres.2006.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 09/22/2006] [Accepted: 11/04/2006] [Indexed: 11/23/2022]
Abstract
The stimulatory input of extracellular matrix (ECM) components has been implicated in the invasive properties of glioma cells. It has been demonstrated that undersulfation of glycosaminoglycans (GAGs) promoted by sodium chlorate (SC) treatment reduces C6 glioma cell proliferation and adhesion to ECM molecules, in-vitro. In the present study, the authors investigated the involvement of GAG undersulfation in glioma cell growth in the brain parenchyma. The in-vitro treatment of C6 cells with SC and subsequent intracerebral inoculation in vehicle containing SC resulted in a reduced proportion of animals bearing glioma and a reduced tumor mass diameter. It also promoted longer animal survival. Intracerebral inoculation of SC-treated C6 cells in vehicle without SC or the SC treatment after intracerebral implantation of untreated C6 cells did not result in any reduction of tumor growth. Alterations in clinical, hematological and behavioral parameters in the open field were observed near the point of death when tumors presented a greater size. The results suggest an important role of GAGs in glioma growth which possibly affects cell proliferation and/or interactions with the normal tissue environment.
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Affiliation(s)
- Bruno Lobão-Soares
- Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, 88040-900, Trindade, Florianópolis, S.C., Brazil
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11
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Mendes de Aguiar CBN, Lobão-Soares B, Alvarez-Silva M, Trentin AG. Glycosaminoglycans modulate C6 glioma cell adhesion to extracellular matrix components and alter cell proliferation and cell migration. BMC Cell Biol 2005; 6:31. [PMID: 16111491 PMCID: PMC1201133 DOI: 10.1186/1471-2121-6-31] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2005] [Accepted: 08/19/2005] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Adhesion to extracellular matrix (ECM) components has been implicated in the proliferative and invasive properties of tumor cells. We investigated the ability of C6 glioma cells to attach to ECM components in vitro and described the regulatory role of glycosaminoglycans (GAGs) on their adhesion to the substrate, proliferation and migration. RESULTS ECM proteins (type IV collagen, laminin and fibronectin) stimulate rat C6 glioma cell line adhesion in vitro, in a dose-dependent manner. The higher adhesion values were achieved with type IV collagen. Exogenous heparin or chondroitin sulfate impaired, in a dose-dependent manner the attachment of C6 glioma cell line to laminin and fibronectin, but not to type IV collagen. Dextran sulfate did not affect C6 adhesion to any ECM protein analyzed, indicating a specific role of GAGs in mediating glioma adhesion to laminin and fibronectin. GAGs and dextran sulfate did not induce C6 glioma detachment from any tested substrate suggesting specific effect in the initial step of cell adhesion. Furthermore, heparin and chondroitin sulfate impaired C6 cells proliferation on fibronectin, but not on type IV collagen or laminin. In contrast, both GAGs stimulate the glioma migration on laminin without effect on type IV collagen or fibronectin. CONCLUSION The results suggest that GAGs and proteoglycans regulate glioma cell adhesion to ECM proteins in specific manner leading to cell proliferation or cell migration, according to the ECM composition, thus modulating tumor cell properties.
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Affiliation(s)
| | - Bruno Lobão-Soares
- Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Brazil
- Faculdade de Medicina de Ribeirão Preto, Hospital das Clinicas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Marcio Alvarez-Silva
- Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Andréa Gonçalves Trentin
- Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Brazil
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Tingbø MG, Kolset SO, Ofstad R, Enersen G, Hannesson KO. Sulfated glycosaminoglycans in the extracellular matrix of muscle tissue in Atlantic cod (Gadus morhua) and Spotted wolffish (Anarhichas minor). Comp Biochem Physiol B Biochem Mol Biol 2005; 140:349-57. [PMID: 15694582 DOI: 10.1016/j.cbpc.2004.09.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2004] [Revised: 09/19/2004] [Accepted: 09/19/2004] [Indexed: 11/26/2022]
Abstract
Two species of commercially important cold water fish were investigated for content of sulfated glycosaminoglycans (GAGs) in muscle tissue by use of in vivo 35S-sulfate labeling combined with different digestions (papain, chondroitinase ABC, keratanase and nitrous acid treatment), DEAE chromatography, SDS-PAGE and histology techniques. The species investigated in this study have different gaping properties. The non-gaping species, spotted wolffish (Anarhichas minor), contained 3-4 times more 35S-sulfated anionic components than the gaping species, Atlantic cod (Gadus morhua). The higher level of sulfation in wolffish was supported by light microscopy studies using Alcian blue staining with different concentrations of MgCl2 as critical electrolyte. Furthermore, the muscular connective tissue in the non-gaping species was dominated by chondroitin sulfate (CS)/dermatan sulfate (DS), whereas the gaping species was more dominated by heparan sulfate (HS). Moreover, structural differences were observed in the junctions between the myofibers, which were more pronounced in the wolffish. The histological studies revealed that the basement membrane area was rich in acidic mucopolysaccharides in both species.
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Affiliation(s)
- Monica G Tingbø
- Norwegian Food Research Institute, Osloveien 1, 1430 As, Norway.
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Cardoso RC, Lobão-Soares B, Bianchin MM, Carlotti CG Jr, Walz R, Alvarez-Silva M, Trentin AG, Nicolau M. Enhancement of blood-tumor barrier permeability by Sar-[D-Phe8]des-Arg9BK, a metabolically resistant bradykinin B1 agonist, in a rat C6 glioma model. BMC Neurosci 2004; 5:38. [PMID: 15458573 DOI: 10.1186/1471-2202-5-38] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2004] [Accepted: 09/30/2004] [Indexed: 12/22/2022] Open
Abstract
Background While it is well known that bradykinin B2 agonists increase plasma protein extravasation (PPE) in brain tumors, the bradykinin B1 agonists tested thus far are unable to produce this effect. Here we examine the effect of the selective B1 agonist bradykinin (BK) Sar-[D-Phe8]des-Arg9BK (SAR), a compound resistant to enzymatic degradation with prolonged activity on PPE in the blood circulation in the C6 rat glioma model. Results SAR administration significantly enhanced PPE in C6 rat brain glioma compared to saline or BK (p < 0.01). Pre-administration of the bradykinin B1 antagonist [Leu8]-des-Arg (100 nmol/Kg) blocked the SAR-induced PPE in the tumor area. Conclusions Our data suggest that the B1 receptor modulates PPE in the blood tumor barrier of C6 glioma. A possible role for the use of SAR in the chemotherapy of gliomas deserves further study.
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