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Albanese P, Caruelle D, Frescaline G, Delbé J, Petit-Cocault L, Huet E, Charnaux N, Uzan G, Papy-Garcia D, Courty J. Glycosaminoglycan mimetics–induced mobilization of hematopoietic progenitors and stem cells into mouse peripheral blood: Structure/function insights∗. Exp Hematol 2009; 37:1072-83. [DOI: 10.1016/j.exphem.2009.06.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Revised: 05/18/2009] [Accepted: 06/09/2009] [Indexed: 10/20/2022]
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52
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Friand V, Haddad O, Papy-Garcia D, Hlawaty H, Vassy R, Hamma-Kourbali Y, Perret GY, Courty J, Baleux F, Oudar O, Gattegno L, Sutton A, Charnaux N. Glycosaminoglycan mimetics inhibit SDF-1/CXCL12-mediated migration and invasion of human hepatoma cells. Glycobiology 2009; 19:1511-24. [PMID: 19717493 DOI: 10.1093/glycob/cwp130] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
We have recently reported that the CXC-chemokine stromal cell-derived factor-1 (SDF-1)/CXCL12 induces proliferation, migration, and invasion of the Huh7 human hepatoma cells through its G-protein-coupled receptor CXCR4 and that glycosaminoglycans (GAGs) are involved in these events. Here, we demonstrate by surface plasmon resonance that the chemokine binds to GAG mimetics obtained by grafting carboxylate, sulfate or acetate groups onto a dextran backbone. We also demonstrate that chemically modified dextrans inhibit SDF-1/CXCL12-mediated in vitro chemotaxis and anchorage-independent cell growth in a dose-dependent manner. The binding of GAG mimetics to the chemokine and their effects in modulating the SDF-1/CXCL12 biological activities are mainly related to the presence of sulfate groups. Furthermore, the mRNA expression of enzymes involved in heparan sulfate biosynthesis, such as exostosin-1 and -2 or N-deacetylase N-sulfotransferases remained unchanged, but heparanase mRNA and protein expressions in Huh7 cells were decreased upon GAG mimetic treatment. Moreover, decreasing heparanase-1 mRNA levels by RNA interference significantly reduced SDF-1/CXCL12-induced extracellular signal-regulated kinase 1/2 (ERK 1/2) phosphorylation. Therefore, we suggest that GAG mimetic effects on SDF-1/CXCL12-mediated hepatoma cell chemotaxis may rely on decreased heparanase expression, which impairs SDF-1/CXCL12's signaling. Altogether, these data suggest that GAG mimetics may compete with cellular heparan sulfate chains for the binding to SDF-1/CXCL12 and may affect heparanase expression, leading to reduced SDF-1/CXCL12 mediated in vitro chemotaxis and growth of hepatoma cells.
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Mangoni M, Yue X, Morin C, Violot D, Frascogna V, Tao Y, Opolon P, Castaing M, Auperin A, Biti G, Barritault D, Vozenin-Brotons MC, Deutsch E, Bourhis J. Differential effect triggered by a heparan mimetic of the RGTA family preventing oral mucositis without tumor protection. Int J Radiat Oncol Biol Phys 2009; 74:1242-50. [PMID: 19545790 DOI: 10.1016/j.ijrobp.2009.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2008] [Revised: 01/12/2009] [Accepted: 03/11/2009] [Indexed: 10/20/2022]
Abstract
PURPOSE Oral mucositis is a common side effect induced by radio/chemotherapy in patients with head and neck cancer. Although it dramatically impairs patient quality of life, no efficient and safe therapeutic solution is available today. Therefore, we investigated the protective efficacy of a new heparan mimetic biopolymer, RGTA-OTR4131, used alone or in combination with amifostine, for oral mucositis and simultaneously evaluated its effect on tumor growth in vitro and in vivo. METHODS AND MATERIALS A single dose of 16.5 Gy was selectively delivered to the snout of mice, and the effects of OTR4131 or amifostine-OTR4131 were analyzed by macroscopic scoring and histology. The effect of OTR4131 administration on tumor growth was then investigated in vitro and in xenograft models using two cell lines (HEP-2 and HT-29). RESULTS Amifostine and OTR4131 significantly decreased the severity and duration of lip mucosal reactions. However, amifostine has to be administered before irradiation, whereas the most impressive protection was obtained when OTR4131 was injected 24 h after irradiation. In addition, OTR4131 was well tolerated, and the combination of amifostine and OTR4131 further enhanced mucosal protection. At the tumor level, OTR4131 did not modify HEP-2 cell line clonogenic survival in vitro or protect xenografted tumor cells from radiotherapy. Of interest, high doses of OTR4131 significantly decreased clonogenic survival of HT-29 cells. CONCLUSIONS RGTAs-OTR4131 is a well-tolerated, natural agent that effectively reduces radio-induced mucositis without affecting tumor sensitivity to irradiation. This suggests a possible transfer into the clinic for patients' benefit.
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Affiliation(s)
- Monica Mangoni
- Laboratoire UPRES EA 2710, Institut Gustave Roussy, Villejuif, France
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54
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Yue XL, Lehri S, Li P, Barbier-Chassefière V, Petit E, Huang QF, Albanese P, Barritault D, Caruelle JP, Papy-Garcia D, Morin C. Insights on a new path of pre-mitochondrial apoptosis regulation by a glycosaminoglycan mimetic. Cell Death Differ 2009; 16:770-81. [DOI: 10.1038/cdd.2009.9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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55
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Ring opening of epoxides with NaHSO4: isolation of β-hydroxy sulfate esters and an effective synthesis for trans-diols. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.11.092] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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56
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Christman KL, Vázquez-Dorbatt V, Schopf E, Kolodziej CM, Li RC, Broyer RM, Chen Y, Maynard HD. Nanoscale growth factor patterns by immobilization on a heparin-mimicking polymer. J Am Chem Soc 2008; 130:16585-91. [PMID: 19554729 PMCID: PMC3110987 DOI: 10.1021/ja803676r] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In this study, electrostatic interactions between sulfonate groups of an immobilized polymer and the heparin binding domains of growth factors important in cell signaling were exploited to nanopattern the proteins. Poly(sodium 4-styrenesulfonate-co-poly(ethylene glycol) methacrylate) (pSS-co-pPEGMA) was synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization using ethyl S-thiobenzoyl-2-thiopropionate as a chain transfer agent and 2,2'-azoisobutyronitrile (AIBN) as the initiator. The resulting polymer (1) was characterized by 1H NMR, GPC, FT-IR, and UV-vis and had a number average molecular weight (Mn) of 24,000 and a polydispersity index (PDI) of 1.17. The dithioester end group of 1 was reduced to the thiol, and the polymer was subsequently immobilized on a gold substrate. Binding of basic fibroblast growth factor (bFGF) and vascular endothelial growth factor (VEGF) to the polymer via the heparin binding domains was then confirmed by surface plasmon resonance (SPR). The interactions were stable at physiological salt concentrations. Polymer 1 was cross-linked onto silicon wafers using an electron beam writer forming micro- and nanopatterns. Resolutions of 100 nm and arbitrary nanoscale features such as concentric circles and contiguous squares and triangles were achieved. Fluorescence microscopy confirmed that bFGF and VEGF were subsequently immobilized to the polymer micro- and nanopatterns.
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Affiliation(s)
- Karen L. Christman
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
- California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
| | - Vimary Vázquez-Dorbatt
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
- California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
| | - Eric Schopf
- California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
| | - Christopher M. Kolodziej
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
- California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
| | - Ronald C. Li
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
- California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
| | - Rebecca M. Broyer
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
- California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
| | - Yong Chen
- California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
| | - Heather D. Maynard
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
- California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, CA 90095-1569
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Étude pilote d’un nouvel agent de thérapie matricielle (RGTA OTR4120®) dans les ulcères de cornée et les dystrophies cornéennes rebelles. J Fr Ophtalmol 2008; 31:465-71. [DOI: 10.1016/s0181-5512(08)72462-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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58
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Sutton A, Friand V, Papy-Garcia D, Dagouassat M, Martin L, Vassy R, Haddad O, Sainte-Catherine O, Kraemer M, Saffar L, Perret GY, Courty J, Gattegno L, Charnaux N. Glycosaminoglycans and their synthetic mimetics inhibit RANTES-induced migration and invasion of human hepatoma cells. Mol Cancer Ther 2008; 6:2948-58. [PMID: 18025279 DOI: 10.1158/1535-7163.mct-07-0114] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The CC-chemokine regulated on activation, normal T-cell expressed, and presumably secreted (RANTES)/CCL5 mediates its biological activities through activation of G protein-coupled receptors, CCR1, CCR3, or CCR5, and binds to glycosaminoglycans. This study was undertaken to investigate whether this chemokine is involved in hepatoma cell migration or invasion and to modulate these effects in vitro by the use of glycosaminoglycan mimetics. We show that the human hepatoma Huh7 and Hep3B cells express RANTES/CCL5 G protein-coupled receptor CCR1 but not CCR3 nor CCR5. RANTES/CCL5 binding to these cells depends on CCR1 and glycosaminoglycans. Moreover, RANTES/CCL5 strongly stimulates the migration and the invasion of Huh7 cells and to a lesser extent that of Hep3B cells. RANTES/CCL5 also stimulates the tyrosine phosphorylation of focal adhesion kinase and activates matrix metalloproteinase-9 in Huh7 hepatoma cells, resulting in increased invasion of these cells. The fact that RANTES/CCL5-induced migration and invasion of Huh7 cells are both strongly inhibited by anti-CCR1 antibodies and heparin, as well as by beta-d-xyloside treatment of the cells, suggests that CCR1 and glycosaminoglycans are involved in these events. We then show by surface plasmon resonance that synthetic glycosaminoglycan mimetics, OTR4120 or OTR4131, directly bind to RANTES/CCL5. The preincubation of the chemokine with each of these mimetics strongly inhibited RANTES-induced migration and invasion of Huh7 cells. Therefore, targeting the RANTES-glycosaminoglycan interaction could be a new therapeutic approach for human hepatocellular carcinoma.
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Ouidja MO, Petit E, Kerros ME, Ikeda Y, Morin C, Carpentier G, Barritault D, Brugère-Picoux J, Deslys JP, Adjou K, Papy-Garcia D. Structure-activity studies of heparan mimetic polyanions for anti-prion therapies. Biochem Biophys Res Commun 2007; 363:95-100. [PMID: 17826736 DOI: 10.1016/j.bbrc.2007.08.113] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2007] [Accepted: 08/21/2007] [Indexed: 11/30/2022]
Abstract
Polysulfated molecules, as the family of heparan mimetics (HMs) and pentosan polysulfate, are considered among the more promising drugs used in experimental models of prion diseases. Regardless of their therapeutic potential, structure-function studies on these polyanions are still missing. Here, we report the syntheses of a library of HMs of different molecular sizes, containing various sulfation and carboxylation levels, and substituted or not by different hydrophobic cores. The HMs capacities to inhibit the accumulation of PrPres in chronically infected cells (ScGT1-7) and their PrPc binding abilities were examined. Our results showed that an optimal size and sulfation degree are needed for optimum activity, that incorporation of hydrophobic moieties increases compounds efficacy and that the presence of carboxymethyl moieties decreases it. These structural features should be considered on the modelling of polyanionic compounds for optimum anti-prion activities and for advancing in the understanding the mechanisms involved in their biological actions.
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Paquet S, Daude N, Courageot MP, Chapuis J, Laude H, Vilette D. PrPc does not mediate internalization of PrPSc but is required at an early stage for de novo prion infection of Rov cells. J Virol 2007; 81:10786-91. [PMID: 17626095 PMCID: PMC2045457 DOI: 10.1128/jvi.01137-07] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We have studied the interactions of exogenous prions with an epithelial cell line inducibly expressing PrPc protein and permissive to infection by a sheep scrapie agent. We demonstrate that abnormal PrP (PrPSc) and prion infectivity are efficiently internalized in Rov cells, whether or not PrPc is expressed. At odds with earlier studies implicating cellular heparan sulfates in PrPSc internalization, we failed to find any involvement of such molecules in Rov cells, indicating that prions can enter target cells by several routes. We further show that PrPSc taken up in the absence of PrPc was unable to promote efficient prion multiplication once PrPc expression was restored in the cells. This observation argues that interaction of PrPSc with PrPc has to occur early, in a specific subcellular compartment(s), and is consistent with the view that the first prion multiplication events may occur at the cell surface.
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Affiliation(s)
- Sophie Paquet
- Unité de Virologie et Immunologie Moléculaires, Institut National de la Recherche Agronomique, Jouy-en-Josas, France
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61
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Garcia-Filipe S, Barbier-Chassefiere V, Alexakis C, Huet E, Ledoux D, Kerros ME, Petit E, Barritault D, Caruelle JP, Kern P. RGTA OTR4120, a heparan sulfate mimetic, is a possible long-term active agent to heal burned skin. J Biomed Mater Res A 2007; 80:75-84. [PMID: 16958049 DOI: 10.1002/jbm.a.30874] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Burn-related skin fibrosis leads to loss of tissue function and hypertrophic scar formation with damaging consequences for the patient. There is therefore a great need for an efficient agent to treat burned skin. We report that ReGeneraTing Agent (RGTA) reduces burn-induced skin alteration. The tissue-regenerating effect of RGTA OTR4120 was evaluated after 1-6 days and after 10 months in a rat skin burn model. This effect was also examined in vitro using fibroblasts isolated from control and 6-day-old burned skins. We measured production of dermal collagen I, III, and V and activities of metalloproteinases 2 and 9 (MMP-2 and MMP-9). Ratio of collagen III over collagen I production increased 6 days after the burn, because of a decrease in collagen I production. After 10 months, ratio of collagen III over collagen I in burn sites was still increased compared with control skin, because of an increase in collagen III production. Both abnormalities were corrected by OTR4120. OTR4120 increased pro- and active MMP-2 and MMP-9, compared with healthy and burned controls and therefore accelerated remodeling. Similar data were obtained with cultured fibroblasts from healthy and burned skins. OTR4120 enhanced healing in short- and long-term after burns, reducing the formation of fibrotic tissue, and then represents a potential agent to improve burned skin healing.
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Affiliation(s)
- S Garcia-Filipe
- Laboratoire CRRET/CNRS UMR 7149, Faculté des Sciences, Université de Paris 12 Val de Marne, Avenue du Général de Gaulle 94010, Créteil Cedex, France
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Lallam-Laroye C, Escartin Q, Zlowodzki AS, Barritault D, Caruelle JP, Baroukh B, Saffar JL, Colombier ML. Periodontitis destructions are restored by synthetic glycosaminoglycan mimetic. J Biomed Mater Res A 2006; 79:675-83. [PMID: 16832824 DOI: 10.1002/jbm.a.30880] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Periodontitis are bacterium-driven inflammatory diseases that destroy tooth-supporting tissues whose complete restoration is not currently possible. RGTA, a new class of agents, have this capacity in an animal model. Periodontitis was induced in hamsters and, starting 8 weeks later, injected RG1503, a glycosaminoglycan synthesized from a 40 kDa dextran behaving like a heparan sulfate mimetic (1.5 mg kg(-1) w(-1)) or saline for 8 weeks. The three periodontium compartments were evaluated by immunohistochemistry and morphometry. The gingival extracellular matrix disorganized by inflammation was restoring under treatment. The collagen network was repaired and resumed its previous organization. Fibrillin-1 expression was restored so that the elastic network rebuilt at a distance from the pocket and began to reconstruct near the pocket. Apoptotic cell numbers were decreased in the pocket epithelium, and more so in the infiltrated connective tissue. The continuity and the thickness of the basement membrane were restored and testified normalization of epithelium connective tissue interaction. The amount of alveolar bone increased around the first molar, and the interradicular bone was rebuilt. The root cementum was thickened and the number of proliferating cells in the periodontal ligament was increased close to the cementum. RG1503 treatment induces potent anabolic reactions in the extracellular matrices of the different tissues of the periodontium and recruitment of progenitors. In particular, the cell proliferation close to the root surface suggests the reformation of a functional attachment apparatus. These results demonstrate that RG1503 reverses the degenerative changes induced by inflammation and favors the conditions of a regenerative process. Thus, RGTA, a known matrix component mimetic and protector, may be considered as a new therapeutic tool to regenerate the tissues destroyed by periodontitis.
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Affiliation(s)
- C Lallam-Laroye
- Laboratoire Réparations et Remodelages Oro-Faciaux, EA 2496, Faculté de Chirurgie, Université Paris-Descartes, Dentaire, 1 rue Maurice Arnoux, 92120 Montrouge, France
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