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Requena MB, Permana AD, Vollet-Filho JD, González-Vázquez P, Garcia MR, De Faria CMG, Pratavieira S, Donnelly RF, Bagnato VS. Dissolving microneedles containing aminolevulinic acid improves protoporphyrin IX distribution. JOURNAL OF BIOPHOTONICS 2021; 14:e202000128. [PMID: 32981235 DOI: 10.1002/jbio.202000128] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Abstract
One important limitation of topical photodynamic therapy (PDT) is the limited tissue penetration of precursors. Microneedles (MNs) are minimally invasive devices used to promote intradermal drug delivery. Dissolving MNs contain drug-associated to polymer blends, dissolving after insertion into skin, allowing drug release. This study comprises development and characterization of a pyramidal model of dissolving MNs (500 μm) prepared with 5% wt/wt aminolevulinic acid and 20% wt/wt Gantrez AN-139 in aqueous blend. Protoporphyrin IX formation and distribution were evaluated in tumor mice model by using fluorescence widefield imaging, spectroscopy, and confocal microscopy. MNs demonstrated excellent mechanical resistance penetrating about 250 μm with minor size alteration in vitro, and fluorescence intensity was 5-times higher at 0.5 mm on average compared to cream in vivo (being 10 ± 5 a.u. for MNs and 2.4 ± 0.8 a.u. for cream). Dissolving MNs have overcome topical cream application, being extremely promising especially for thicker skin lesions treatment using PDT.
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Affiliation(s)
| | - Andi Dian Permana
- School of Pharmacy, Queen's University Belfast, Belfast, UK
- Department of Pharmaceutics, Faculty of Pharmacy, Hasanuddin University, Makassar, Indonesia
| | | | | | - Marlon Rodrigues Garcia
- Department of Mechanical Engineering, University of São Paulo, São Carlos, São Paulo, Brazil
| | | | - Sebastião Pratavieira
- São Carlos Institute of Physics, University of São Paulo, São Carlos, São Paulo, Brazil
| | | | - Vanderlei Salvador Bagnato
- São Carlos Institute of Physics, University of São Paulo, São Carlos, São Paulo, Brazil
- Hagler Institute for Advanced Studies,Texas A&M University, College Station, Texas, USA
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Anticancer Activity of Chitosan, Chitosan Derivatives, and Their Mechanism of Action. Int J Biomater 2018; 2018:2952085. [PMID: 30693034 PMCID: PMC6332982 DOI: 10.1155/2018/2952085] [Citation(s) in RCA: 158] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 11/26/2018] [Accepted: 12/04/2018] [Indexed: 12/15/2022] Open
Abstract
Tailoring of chitosan through the involvement of its amino, acetamido, and hydroxy groups can give derivatives of enhanced solubility and remarkable anticancer activity. The general mechanism of such activity is associated with the disturbances in normal functioning of cell cycle, interference to the central dogma of biological system from DNA to RNA to protein or enzymatic synthesis, and the disruption of hormonal path to biosynthesis to inhibit the growth of cancer cells. Both chitosan and its various derivatives have been reported to selectively permeate through the cancer cell membranes and show anticancer activity through the cellular enzymatic, antiangiogenic, immunoenhancing, antioxidant defense mechanism, and apoptotic pathways. They get sequestered from noncancer cells and provide their enhanced bioavailability in cancer cells in a sustained release manner. This review presents the putative mechanisms of anticancer activity of chitosan and mechanistic approaches of structure activity relation upon the modification of chitosan through functionalization, complex formation, and graft copolymerization to give different derivatives.
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Tsai ML, Yen CC, Lu FJ, Ting HC, Chang HR. Environmentally relevant concentration of arsenic trioxide and humic acid promoted tumor progression of human cervical cancer cells: In vivo and in vitro studies. ENVIRONMENTAL TOXICOLOGY 2016; 31:1121-1132. [PMID: 25728215 DOI: 10.1002/tox.22121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 01/20/2015] [Accepted: 01/25/2015] [Indexed: 06/04/2023]
Abstract
In a previous study, treatment at higher concentrations of arsenic trioxide or co-exposure to arsenic trioxide and humic acid was found to be inhibited cell growth of cervical cancer cells (SiHa cells) by reactive oxygen species generation. However, treatment at lower concentrations slightly increased cell viability. Here, we investigate the enhancement of progression effects of environmentally relevant concentration of humic acid and arsenic trioxide in SiHa cell lines in vitro and in vivo by measuring cell proliferation, migration, invasion, and the carcinogenesis-related protein (MMP-2, MMP-9, and VEGF-A) expressions. SiHa cells treated with low concentrations of humic acid and arsenic trioxide alone or in co-exposure significantly increased reactive oxygen species, glutathione levels, cell proliferation, scratch wound-healing activities, migration abilities, and MMP-2 expression as compared to the untreated control. In vivo the tumor volume of either single drug (humic acid or arsenic trioxide) or combined drug-treated group was significantly larger than that of the control for an additional 45 days after tumor cell injection on the back of NOD/SCID mice. Levels of MMP-2, MMP-9, and VEGF-A, also significantly increased compared to the control. Histopathologic effects of all tumor cells appeared round in cell shape with high mitosis, focal hyperkeratosis and epidermal hyperplasia in the skin, and some tumor growth in the muscle were observed. Our results may indicate that exposure to low concentrations of arsenic trioxide and humic acid is associated with the progression of cervical cancer. © 2015 Wiley Periodicals, Inc. Environ Toxicol 31: 1121-1132, 2016.
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Affiliation(s)
- Min-Ling Tsai
- Institute of Medicine, Chung Shan Medical University, Taichung, 402, Taiwan
- Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
| | - Cheng-Chieh Yen
- Department of Occupational Safety and Health, College of Health Care and Management, Chung Shan Medical University, Taichung, 402, Taiwan
- Department of Occupational Medicine, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
| | - Fung-Jou Lu
- Institute of Medicine, Chung Shan Medical University, Taichung, 402, Taiwan
| | - Hung-Chih Ting
- Department of Early Childhood Educare, TransWorld University, Yun-lin, 640, Taiwan
| | - Horng-Rong Chang
- Institute of Medicine, Chung Shan Medical University, Taichung, 402, Taiwan
- Division of Nephrology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
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Krüwel T, Nevoltris D, Bode J, Dullin C, Baty D, Chames P, Alves F. In vivo detection of small tumour lesions by multi-pinhole SPECT applying a (99m)Tc-labelled nanobody targeting the Epidermal Growth Factor Receptor. Sci Rep 2016; 6:21834. [PMID: 26912069 PMCID: PMC4766429 DOI: 10.1038/srep21834] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 02/02/2016] [Indexed: 11/09/2022] Open
Abstract
The detection of tumours in an early phase of tumour development in combination with the knowledge of expression of tumour markers such as epidermal growth factor receptor (EGFR) is an important prerequisite for clinical decisions. In this study we applied the anti-EGFR nanobody (99m)Tc-D10 for visualizing small tumour lesions with volumes below 100 mm(3) by targeting EGFR in orthotopic human mammary MDA-MB-468 and MDA-MB-231 and subcutaneous human epidermoid A431 carcinoma mouse models. Use of nanobody (99m)Tc-D10 of a size as small as 15.5 kDa enables detection of tumours by single photon emission computed tomography (SPECT) imaging already 45 min post intravenous administration with high tumour uptake (>3% ID/g) in small MDA-MB-468 and A431 tumours, with tumour volumes of 52.5 mm(3) ± 21.2 and 26.6 mm(3) ± 16.7, respectively. Fast blood clearance with a serum half-life of 4.9 min resulted in high in vivo contrast and ex vivo tumour to blood and tissue ratios. In contrast, no accumulation of (99m)Tc-D10 in MDA-MB-231 tumours characterized by a very low expression of EGFR was observed. Here we present specific and high contrast in vivo visualization of small human tumours overexpressing EGFR by preclinical multi-pinhole SPECT shortly after administration of anti-EGFR nanobody (99m)Tc-D10.
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Affiliation(s)
- Thomas Krüwel
- Department of Diagnostic and Interventional Radiology, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075 Goettingen, Germany
| | - Damien Nevoltris
- Antibody therapeutics and Immunotargeting, CRCM, Inserm U1068, Institut PaoliCalmettes, Aix-Marseille Université UM 105, CNRS UMR7258, F-13009, Marseille, France
| | - Julia Bode
- Molecular Mechanisms of Tumour Cell Invasion (V077), German Cancer Research Center, Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
| | - Christian Dullin
- Department of Diagnostic and Interventional Radiology, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075 Goettingen, Germany
| | - Daniel Baty
- Antibody therapeutics and Immunotargeting, CRCM, Inserm U1068, Institut PaoliCalmettes, Aix-Marseille Université UM 105, CNRS UMR7258, F-13009, Marseille, France
| | - Patrick Chames
- Antibody therapeutics and Immunotargeting, CRCM, Inserm U1068, Institut PaoliCalmettes, Aix-Marseille Université UM 105, CNRS UMR7258, F-13009, Marseille, France
| | - Frauke Alves
- Department of Diagnostic and Interventional Radiology, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075 Goettingen, Germany.,Department of Haematology and Medical Oncology, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075 Goettingen, Germany.,Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Hermann-Rein-Str. 3, 37075 Goettingen, Germany
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Mehrmohammadi M, Shin TH, Qu M, Kruizinga P, Truby RL, Lee JH, Cheon J, Emelianov SY. In vivo pulsed magneto-motive ultrasound imaging using high-performance magnetoactive contrast nanoagents. NANOSCALE 2013; 5:11179-86. [PMID: 24080913 PMCID: PMC3916332 DOI: 10.1039/c3nr03669c] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Previously, pulsed magneto-motive ultrasound (pMMUS) imaging has been introduced as a contrast-agent-assisted ultrasound-based imaging modality capable of visualizing biological events at the cellular and molecular level. In pMMUS imaging, a high intensity pulsed magnetic field is used to excite cells or tissue labeled with magnetic nanoparticles. Then, ultrasound (US) imaging is used to monitor the mechanical response of the tissue to an externally applied magnetic field (i.e., tissue displacement). Signal to noise ratio (SNR) in pMMUS imaging can be improved by using superparamagnetic nanoparticles with larger saturation magnetization. Metal-doped magnetic nanoparticles with enhanced tunable nanomagnetism are suitable candidates to improve the SNR and, therefore, sensitivity of pMMUS imaging, which is essential for in vivo pMMUS imaging. In this study, we demonstrate the capability of pMMUS imaging to identify the presence and distribution of zinc-doped iron oxide nanoparticles in live nude mice bearing A431 (human epithelial carcinoma) xenograft tumors.
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Affiliation(s)
- Mohammad Mehrmohammadi
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA, Fax: +1-512-471-0616; Tel: +1-512-471-1733
| | - Tae-Hyun Shin
- Department of Chemistry, Yonsei University, Seoul, Country. Fax: +82-2-364-7050; Tel: +82-2-2123-7520
| | - Min Qu
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA, Fax: +1-512-471-0616; Tel: +1-512-471-1733
| | - Pieter Kruizinga
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA, Fax: +1-512-471-0616; Tel: +1-512-471-1733
| | - Ryan L. Truby
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA, Fax: +1-512-471-0616; Tel: +1-512-471-1733
| | - Jae-Hyun Lee
- Department of Chemistry, Yonsei University, Seoul, Country. Fax: +82-2-364-7050; Tel: +82-2-2123-7520
| | - Jinwoo Cheon
- Department of Chemistry, Yonsei University, Seoul, Country. Fax: +82-2-364-7050; Tel: +82-2-2123-7520
| | - Stanislav Y. Emelianov
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA, Fax: +1-512-471-0616; Tel: +1-512-471-1733
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Abdelkarim M, Vintonenko N, Starzec A, Robles A, Aubert J, Martin ML, Mourah S, Podgorniak MP, Rodrigues-Ferreira S, Nahmias C, Couraud PO, Doliger C, Sainte-Catherine O, Peyri N, Chen L, Mariau J, Etienne M, Perret GY, Crepin M, Poyet JL, Khatib AM, Di Benedetto M. Invading basement membrane matrix is sufficient for MDA-MB-231 breast cancer cells to develop a stable in vivo metastatic phenotype. PLoS One 2011; 6:e23334. [PMID: 21858074 PMCID: PMC3156115 DOI: 10.1371/journal.pone.0023334] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 07/14/2011] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION The poor efficacy of various anti-cancer treatments against metastatic cells has focused attention on the role of tumor microenvironment in cancer progression. To understand the contribution of the extracellular matrix (ECM) environment to this phenomenon, we isolated ECM surrogate invading cell populations from MDA-MB-231 breast cancer cells and studied their genotype and malignant phenotype. METHODS We isolated invasive subpopulations (INV) from non invasive populations (REF) using a 2D-Matrigel assay, a surrogate of basal membrane passage. INV and REF populations were investigated by microarray assay and for their capacities to adhere, invade and transmigrate in vitro, and to form metastases in nude mice. RESULTS REF and INV subpopulations were stable in culture and present different transcriptome profiles. INV cells were characterized by reduced expression of cell adhesion and cell-cell junction genes (44% of down regulated genes) and by a gain in expression of anti-apoptotic and pro-angiogenic gene sets. In line with this observation, in vitro INV cells showed reduced adhesion and increased motility through endothelial monolayers and fibronectin. When injected into the circulation, INV cells induced metastases formation, and reduced injected mice survival by up to 80% as compared to REF cells. In nude mice, INV xenografts grew rapidly inducing vessel formation and displaying resistance to apoptosis. CONCLUSION Our findings reveal that the in vitro ECM microenvironment per se was sufficient to select for tumor cells with a stable metastatic phenotype in vivo characterized by loss of adhesion molecules expression and induction of pro-angiogenic and survival factors.
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Affiliation(s)
- Mohamed Abdelkarim
- Université Paris 13, CNRS FRE CSPBAT, Laboratoire de Chimie Structurale Biomoléculaire, UFR SMBH, Bobigny, France
- INSERM 553 Endothélium et Angiogénèse Laboratoire d'Hémostase, Paris, France
| | - Nadejda Vintonenko
- Université Paris 13, CNRS FRE CSPBAT, Laboratoire de Chimie Structurale Biomoléculaire, UFR SMBH, Bobigny, France
- INSERM 553 Endothélium et Angiogénèse Laboratoire d'Hémostase, Paris, France
| | - Anna Starzec
- Université Paris 13, EA4222, Li2P, Bobigny, France
| | - Aniela Robles
- Université Paris 13, CNRS FRE CSPBAT, Laboratoire de Chimie Structurale Biomoléculaire, UFR SMBH, Bobigny, France
- Université Paris 7, UMRS 940. Equipe Avenir, IGM, Paris, France
| | - Julie Aubert
- AgroParisTech, UMR 518, Mathématiques et Informatique Appliquées, Paris, France
| | - Marie-Laure Martin
- AgroParisTech, UMR 518, Mathématiques et Informatique Appliquées, Paris, France
- URGV UMR INRA 1165-CNRS 8114-UEVE, Evry, France
| | - Samia Mourah
- Université Paris 7, UMRS 940. Equipe Avenir, IGM, Paris, France
| | | | - Sylvie Rodrigues-Ferreira
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France, Université Paris Descartes, Paris, France
| | - Clara Nahmias
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France, Université Paris Descartes, Paris, France
| | - Pierre-Olivier Couraud
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France, Université Paris Descartes, Paris, France
| | - Christelle Doliger
- Service Commun d'Imagerie, Institut d'Hématologie, Hôpital Saint Louis, Paris, France
| | - Odile Sainte-Catherine
- Université Paris 13, CNRS FRE CSPBAT, Laboratoire de Chimie Structurale Biomoléculaire, UFR SMBH, Bobigny, France
| | - Nicole Peyri
- Université Paris 13, CNRS FRE CSPBAT, Laboratoire de Chimie Structurale Biomoléculaire, UFR SMBH, Bobigny, France
- Université Paris 7, UMRS 940. Equipe Avenir, IGM, Paris, France
| | - Lei Chen
- INSERM 553 Endothélium et Angiogénèse Laboratoire d'Hémostase, Paris, France
| | - Jérémie Mariau
- INSERM 553 Endothélium et Angiogénèse Laboratoire d'Hémostase, Paris, France
| | - Monique Etienne
- Université Paris 13, Laboratoire d'Histologie, Bobigny, France
| | | | - Michel Crepin
- INSERM 553 Endothélium et Angiogénèse Laboratoire d'Hémostase, Paris, France
| | - Jean-Luc Poyet
- Université Paris 7, UMRS 940. Equipe Avenir, IGM, Paris, France
| | - Abdel-Majid Khatib
- Université Paris 7, UMRS 940. Equipe Avenir, IGM, Paris, France
- INSERM U1029 Université Bordeaux 1, Bordeaux, France
| | - Mélanie Di Benedetto
- Université Paris 13, CNRS FRE CSPBAT, Laboratoire de Chimie Structurale Biomoléculaire, UFR SMBH, Bobigny, France
- Université Paris 7, UMRS 940. Equipe Avenir, IGM, Paris, France
- * E-mail:
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Gloaguen V, Brudieux V, Closs B, Barbat A, Krausz P, Sainte-Catherine O, Kraemer M, Maes E, Guerardel Y. Structural characterization and cytotoxic properties of an apiose-rich pectic polysaccharide obtained from the cell wall of the marine phanerogam Zostera marina. JOURNAL OF NATURAL PRODUCTS 2010; 73:1087-92. [PMID: 20465284 DOI: 10.1021/np100092c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Zosterin, an apiose-rich pectic polysaccharide, was extracted and purified from the sea grass Zostera marina. Structural studies conducted by gas chromatography and NMR spectroscopy on a purified zosterin fraction (AGU) revealed a typical apiogalacturonan structure comprising an alpha-1,4-d-galactopyranosyluronan backbone substituted by 1,2-linked apiofuranose oligosaccharides and single apiose residues. The average molecular mass of AGU was estimated to be about 4100 Da with a low polydispersity. AGU inhibited proliferation of A431 human epidermoid carcinoma cells with an approximate IC(50) value of 3 microg/mL (0.7 microM). In addition, AGU inhibited A431 cell migration and invasion. Preliminary experiments showed that inhibition of metalloproteases expression could play a role in these antimigration and anti-invasive properties. Autohydrolysis of AGU, which eliminated apiose and oligo-apiose substituents, led to a virtual disappearance of cytotoxic properties, thus suggesting a direct structure-function relationship with the apiose-rich hairy region of AGU.
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Affiliation(s)
- Vincent Gloaguen
- Laboratoire de Chimie des Substances Naturelles, EA 1069, Faculte des Sciences et Techniques, Universite de Limoges, F-87060 SILAB, Saint Viance F-19240, France.
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9
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Hadj-Bouazza A, Teste K, Colombeau L, Chaleix V, Zerrouki R, Kraemer M, Sainte Catherine O. Synthesis and biological activity of mustard derivatives of thymine. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2008; 27:439-48. [PMID: 18569783 DOI: 10.1080/15257770802086872] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The synthesis and biological activity of a novel DNA cross-linking antitumor agent is presented. The new alkylating agent significantly inhibited cell proliferation, migration and invasion as tested in vitro on the A431 vulvar epidermal carcinoma cell line.
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Affiliation(s)
- Amel Hadj-Bouazza
- Laboratoire de Chimie des Substances Naturelles, Faculte des Sciences et Techniques Limoges, Universite de Limoges, France
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10
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Xiao YF, Wu DD, Liu SX, Chen X, Ren LF. Effect of arsenic trioxide on vascular endothelial cell proliferation and expression of vascular endothelial growth factor receptors Flt-1 and KDR in gastric cancer in nude mice. World J Gastroenterol 2008. [PMID: 18161919 DOI: 10.3748/wjg.13.6498] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the effect of arsenic trioxide (As2O3) on expression of vascular endothelial growth factor receptor-1 (VEGFR-1, Flt-1) and VEGFR-2 (KDR) in human gastric tumor cells and proliferation of vascular endothelial cells. METHODS The solid tumor model was formed in nude mice with the gastric cancer cell line SGC-7901. The animals were treated with As2O3. Microvessel density (MVD) and expression of Flt-1 and KDR were detected by immunofluorescence laser confocal microscopy. SGC-7901 cells were treated respectively by exogenous recombinant human VEGF165 or VEGF165 + As2O3. Cell viability was measured by MTT assay. Cell viability of ECV304 cells was measured by MTT assay, and cell cycle and apoptosis were analyzed using flow cytometry. RESULTS The tumor growth inhibition was 30.33% and 50.85%, respectively, in mice treated with As2O3 2.5 and 5 mg/kg. MVD was significantly lower in arsenic-treated mice than in the control group. The fluorescence intensity levels of Flt-1 and KDR were significantly less in the arsenic-treated mice than in the control group. VEGF165 may accelerate growth of SGC7901 cells, but As2O3 may disturb the stimulating effect of VEGF165. ECV304 cell growth was suppressed by 76.51%, 71.09% and 61.49% after 48 h treatment with As2O3 at 0.5, 2.5 and 5 micromol/L, respectively. Early apoptosis in the As2O3-treated mice was 2.88-5.1 times higher than that in the controls, and late apoptosis was 1.17-1.67 times higher than that in the controls. CONCLUSION Our results showed that As2O3 delays tumor growth, inhibits MVD, down-regulates Flt-1 and KDR expression, and disturbs the stimulating effect of VEGF165 on the growth of SGC7901 cells. These results suggest that As2O3 might delay growth of gastric tumors through inhibiting the paracrine and autocrine pathways of VEGF/VEGFRs.
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Affiliation(s)
- Yan-Feng Xiao
- Department of Pediatrics, The Second Affiliated Hospital of the Medical College, Xi'an Jiaotong University, Xi'an 710049, Shaanxi Province, China.
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11
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Barbat A, Gloaguen V, Moine C, Sainte-Catherine O, Kraemer M, Rogniaux H, Ropartz D, Krausz P. Structural characterization and cytotoxic properties of a 4-O-methylglucuronoxylan from castanea sativa. 2. Evidence of a structure-activity relationship. JOURNAL OF NATURAL PRODUCTS 2008; 71:1404-1409. [PMID: 18646856 DOI: 10.1021/np800207g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Xylans were purified from delignified holocellulose alkaline extracts of Castanea sativa (Spanish chestnut) and Argania spinosa (Argan tree) and their structures analyzed by means of GC of their per-trimethylsilylated methylglycoside derivatives and (1)H NMR spectroscopy. The structures deduced were characteristic of a 4-O-methylglucuronoxylan (MGX) and a homoxylan (HX), respectively, with degrees of polymerization ranging from 182 to 360. In the case of MGX, the regular or random distribution of 4-O-methylglucuronic acid along the xylosyl backbone--determined by MALDI mass spectrometry after autohydrolysis of the polysaccharide--varied and depended both on the botanical source from which they were extracted and on the xylan extraction procedure. The MGX also inhibited in different ways the proliferation as well as the migration and invasion capability of A431 human epidermoid carcinoma cells. These biological properties could be correlated with structural features including values of the degree of polymerization, 4-O-MeGlcA to xylose ratios, and distribution of 4-O-MeGlcA along the xylosyl backbone, giving evidence of a defined structure-activity relationship.
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Affiliation(s)
- Aline Barbat
- Laboratoire de Chimie des Substances Naturelles, EA 1069, Université de Limoges, F-87060, France
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Colombeau L, Teste K, Hadj-Bouazza A, Chaleix V, Zerrouki R, Kraemer M, Catherine OS. Synthesis and biological activity of chloroethyl pyrimidine nucleosides. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2008; 27:110-20. [PMID: 18205066 DOI: 10.1080/15257770701795813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The synthesis and biological activity of chloroethyl pyrimidine nucleosides is presented. One of these new nucleosides analogues significantly inhibited cell proliferation, migration and invasion as tested in vitro on the A431 vulvar epidermal carcinoma cell line.
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Affiliation(s)
- Ludovic Colombeau
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences et Techniques, Limoges, France
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13
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Di Benedetto M, Starzec A, Vassy R, Perret GY, Crépin M. Distinct heparin binding sites on VEGF165 and its receptors revealed by their interaction with a non sulfated glycoaminoglycan (NaPaC). Biochim Biophys Acta Gen Subj 2008; 1780:723-32. [DOI: 10.1016/j.bbagen.2008.01.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2007] [Revised: 01/25/2008] [Accepted: 01/25/2008] [Indexed: 11/30/2022]
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Xiao YF, Wu DD, Liu SX, Chen X, Ren LF. Effect of arsenic trioxide on vascular endothelial cell proliferation and expression of vascular endothelial growth factor receptors Flt-1 and KDR in gastric cancer in nude mice. World J Gastroenterol 2007; 13:6498-505. [PMID: 18161919 PMCID: PMC4611288 DOI: 10.3748/wjg.v13.i48.6498] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of arsenic trioxide (As2O3) on expression of vascular endothelial growth factor receptor-1 (VEGFR-1, Flt-1) and VEGFR-2 (KDR) in human gastric tumor cells and proliferation of vascular endothelial cells.
METHODS: The solid tumor model was formed in nude mice with the gastric cancer cell line SGC-7901. The animals were treated with As2O3. Microvessel density (MVD) and expression of Flt-1 and KDR were detected by immunofluorescence laser confocal microscopy. SGC-7901 cells were treated respectively by exogenous recombinant human VEGF165 or VEGF165 + As2O3. Cell viability was measured by MTT assay. Cell viability of ECV304 cells was measured by MTT assay, and cell cycle and apoptosis were analyzed using flow cytometry.
RESULTS: The tumor growth inhibition was 30.33% and 50.85%, respectively, in mice treated with As2O3 2.5 and 5 mg/kg. MVD was significantly lower in arsenic-treated mice than in the control group. The fluorescence intensity levels of Flt-1 and KDR were significantly less in the arsenic-treated mice than in the control group. VEGF165 may accelerate growth of SGC7901 cells, but As2O3 may disturb the stimulating effect of VEGF165. ECV304 cell growth was suppressed by 76.51%, 71.09% and 61.49% after 48 h treatment with As2O3 at 0.5, 2.5 and 5 μmol/L, respectively. Early apoptosis in the As2O3-treated mice was 2.88-5.1 times higher than that in the controls, and late apoptosis was 1.17-1.67 times higher than that in the controls.
CONCLUSION: Our results showed that As2O3 delays tumor growth, inhibits MVD, down-regulates Flt-1 and KDR expression, and disturbs the stimulating effect of VEGF165 on the growth of SGC7901 cells. These results suggest that As2O3 might delay growth of gastric tumors through inhibiting the paracrine and autocrine pathways of VEGF/VEGFRs.
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Moine C, Krausz P, Chaleix V, Sainte-Catherine O, Kraemer M, Gloaguen V. Structural characterization and cytotoxic properties of a 4-O-methylglucuronoxylan from Castanea sativa. JOURNAL OF NATURAL PRODUCTS 2007; 70:60-6. [PMID: 17253851 DOI: 10.1021/np060354p] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A glucuronoxylan was purified from a delignified holocellulose alkaline extract of Castanea sativa (Spanish chestnut) and its structure analyzed by means of FT-IR, GC of the per-trimethylsilylated methylglycoside derivatives, and 1H and 13C NMR spectroscopy. The results supported a structure based on a linear polymer of xylopyranose units linked with beta(1-->4) bonds in which, on average, one out of every six units is substituted at C-2 by a 4-O-methylglucuronic acid unit; this structure is typical of a hardwood acidic 4-O-methylglucuronoxylan (MGX) with an estimated degree of polymerization of 200. The MGX from C. sativa inhibited the proliferation of A431 human epidermoid carcinoma cells with an IC50 value of 50 microM. In addition, this xylan inhibited A431 cell migration and invasion. Preliminary experiments showing that secretion of metalloproteinases MMP2 and MMP9 by A431 tumor cells was inhibited by the purified C. sativa MGX strongly suggest that this mechanism of action may play a role in its antimigration and anti-invasive properties.
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Affiliation(s)
- Charlotte Moine
- Laboratoire de Chimie des Substances Naturelles, EA 1069, Faculté des Sciences et Techniques, Université de Limoges, F-87060, France
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Ledoux D, Hamma-Kourbali Y, Di Benedetto M, Foucault-Bertaud A, Oudar O, Sainte-Catherine O, Lecouvey M, Kraemer M. A new dimethyl ester bisphosphonate inhibits angiogenesis and growth of human epidermoid carcinoma xenograft in nude mice. Anticancer Drugs 2006; 17:479-85. [PMID: 16550007 DOI: 10.1097/01.cad.0000198909.52701.0f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Bisphosphonates are extensively used in the treatment of patients with metastasis-induced osteolysis. The major drawback in the efficacy of all bisphosphonates lies in their high hydrophilic nature, which results in poor membrane permeability and low availability for soft tissues. A reasonable approach to overcome these problems consists in masking one or more ionizable groups of bisphosphonates, notably by esterification of the hydroxyl functions. We have previously shown that the novel non-nitrogen-containing bisphosphonate BP7033 inhibited angiogenesis and growth of primary tumors in nude mice. The present study focuses on the dimethyl-esterified analog of this compound (Me-BP7033). In-vitro, Me-BP7033 inhibited proliferation of human carcinoma A431 cells as well as their invasive activity based on a transwell invasion assay. in-vivo, administration of Me-BP7033 (0.3 mg/kg) twice a week for 5 weeks inhibited the tumor growth of A431 cells xenografted in nude mice by 65%. Immunostaining of endothelial cells (ECs) in tumor sections revealed that Me-BP7033 inhibited the intratumor ECs density by 60%. The in-vivo anti-angiogenic properties of Me-BP7033 were also demonstrated in an in-vivo angiogenesis assay showing that Me-BP7033 reduced the vascular endothelial growth factor-stimulated infiltration of ECs in a Matrigel plug by 70%. In summary, we demonstrated for the first time that a diesterified bisphosphonate exhibited in vivo both anti-tumoral and anti-angiogenic activities with no apparent sign of toxic effects. These new diesterified compounds, which could display enhanced bioavailability and pharmacokinetics, thus represent interesting candidates for therapeutic applications such as cancer treatment.
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Affiliation(s)
- Dominique Ledoux
- EA3406, Laboratoire de Pharmacologie, Université Paris 13, Bobigny, France.
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