Research Topics
Genomes and Genes | Carine MichielsSummaryAffiliation: University of Namur Country: Belgium Publications
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Publications
Identification of the phospholipase A(2) isoforms that contribute to arachidonic acid release in hypoxic endothelial cells: limits of phospholipase A(2) inhibitorsCarine Michiels
Laboratoire de Biochimie et Biologie Cellulaire, Facultes Universitaires Notre Dame de la Paix, 61 rue de Bruxelles, 5000, Namur, Belgium
Biochem Pharmacol 63:321-32. 2002..Taken together, these results indicate that the hypoxia-induced increase in PLA(2) activity is mostly due to the activation of sPLA(2)...
TMEM45A is essential for hypoxia-induced chemoresistance in breast and liver cancer cellsLionel Flamant
URBC NARILIS, University of Namur FUNDP, 61 rue de Bruxelles, 5000, Namur, Belgium
BMC Cancer 12:391. 2012..abstract:..
Anti-apoptotic role of HIF-1 and AP-1 in paclitaxel exposed breast cancer cells under hypoxiaLionel Flamant
Laboratory of Biochemistry and Cellular Biology URBC, NARILIS NAmur Research Institute for LIfe Sciences FUNDP University of Namur, 5000 Namur, Belgium
Mol Cancer 9:191. 2010..Hypoxia is a hallmark of solid tumors and is associated with metastases, therapeutic resistance and poor patient survival...
Role of the endothelium and blood stasis in the appearance of varicose veinsC Michiels
Laboratoire de Biochimie et Biologie Cellulaire, University of Namur, Namur, Belgium
Int Angiol 21:1-8. 2002..Hence, the cells are resistant to ischemia and do not release inflammatory mediators and growth factors. These drugs should thus be able to prevent the alterations of the venous wall induced by blood stasis...
HIF-1 and AP-1 cooperate to increase gene expression in hypoxia: role of MAP kinasesC Michiels
Laboratory of Biochemistry and Cellular Biology, University of Namur, Belgium
IUBMB Life 52:49-53. 2001..Both HIF-1 and AP-1 activation by hypoxia seems to involve members of the MAP kinase family. Here, we summarize the data indicating that ERK and JNK are needed for activation of HIF-1 and AP-1, respectively...
Regulation of gene expression by oxygen: NF-kappaB and HIF-1, two extremesCarine Michiels
Biochemistry and Cellular Biology Laboratory, University of Namur, Belgium
Free Radic Biol Med 33:1231-42. 2002..Some of the physiological responses initiated by these transcription factors are also mentioned...
Physiological and pathological responses to hypoxiaCarine Michiels
Laboratoire de Biochimie et Biologie Cellulaire, University of Namur, Namur, Belgium
Am J Pathol 164:1875-82. 2004..The role of hypoxia in three pathological conditions, myocardial and cerebral ischemia as well as tumorigenesis, is briefly discussed...
Endothelial cell functionsCarine Michiels
Laboratoire de Biochimie et Biologie Cellulaire, University of Namur, Namur, Belgium
J Cell Physiol 196:430-43. 2003....
Role of the endothelium and blood stasis in the development of varicose veinsC Michiels
Laboratoire de Biochimie et Biologie Cellulaire, University of Namur, Namur, Belgium
Int Angiol 21:18-25. 2002..Hence, the cells are resistant to ischemia and do not release inflammatory mediators and growth factors. These drugs should thus be able to prevent the alterations of the venous wall induced by blood stasis...
Endothelial cell responses to hypoxia: initiation of a cascade of cellular interactionsC Michiels
Laboratory of Biochemistry and Cellular Biology, Facult es Universitaires Notre Dame de la Paix, 61 rue de Bruxelles, 5000, Namur, Belgium
Biochim Biophys Acta 1497:1-10. 2000....
Hypoxia protects HepG2 cells against etoposide-induced apoptosis via a HIF-1-independent pathwayJean Pascal Piret
Laboratory of Biochemistry and Cellular Biology URBC, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
Exp Cell Res 312:2908-20. 2006..Together, all these data underline that hypoxia could mediate its anti-apoptotic role via different transcription factors depending on the cellular context and pro-apoptotic stimuli...
Hypoxia-induced decrease in p53 protein level and increase in c-jun DNA binding activity results in cancer cell resistance to etoposideJean Philippe Cosse
Laboratory of Biochemistry and Cellular Biology URBC, FUNDP University of Namur, 5000 Namur, Belgium
Neoplasia 11:976-86. 2009..These effects occurred in a p53-independent manner. These data evidenced that hypoxia decreased the responsiveness of HepG2 cells to etoposide at least by two independent pathways involving p53 inhibition and c-jun activation...
Hypoxia induces protection against etoposide-induced apoptosis: molecular profiling of changes in gene expression and transcription factor activityAudrey Sermeus
URBC, FUNDP University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
Mol Cancer 7:27. 2008..it is now well established that hypoxia renders tumor cells resistant to radio- but also chemotherapy. However, few elements are currently available as for the mechanisms underlying this protection...
ERK and calcium in activation of HIF-1Denis Mottet
Laboratory of Biochemistry and Cellular Biology, University of Namur, 5000 Namur, Belgium
Ann N Y Acad Sci 973:448-53. 2002..Altogether, these results suggest that calcium and calmodulin would act upstream of ERK in the hypoxia signal transduction pathway leading to enhanced HIF-1 transcriptional activity...
Role of ERK and calcium in the hypoxia-induced activation of HIF-1Denis Mottet
Laboratory of Biochemistry and Cellular Biology, University of Namur, Belgium
J Cell Physiol 194:30-44. 2003..All together, these results suggest that calcium and calmodulin would act upstream of ERK in the hypoxia signal transduction pathway...
Hypoxia-inducible factor-1-dependent overexpression of myeloid cell factor-1 protects hypoxic cells against tert-butyl hydroperoxide-induced apoptosisJean Pascal Piret
Laboratory of Biochemistry and Cellular Biology, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
J Biol Chem 280:9336-44. 2005..All these data suggest a potential anti-apoptotic role of HIF-1 that could protect cells against apoptosis under hypoxia by overexpression of the Mcl-1 protein...
Intermittent hypoxia is an angiogenic inducer for endothelial cells: role of HIF-1Sebastien Toffoli
Laboratory of Biochemistry and Cellular Biology, FUNDP University of Namur, 61 rue de Bruxelles, Namur, Belgium
Angiogenesis 12:47-67. 2009..All together, these results demonstrate a clear pro-angiogenic effect of intermittent hypoxia...
Hypoxia regulates inflammatory gene expression in endothelial cellsLionel Flamant
Laboratory of Biochemistry and Cellular Biology URBC, FUNDP University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
Exp Cell Res 315:733-47. 2009..On the other hand, a clear response to hypoxia was observed with HIF-1 probably playing an important role in this process...
Hypoxia and CoCl2 protect HepG2 cells against serum deprivation- and t-BHP-induced apoptosis: a possible anti-apoptotic role for HIF-1Jean-Pascal Piret
Laboratory of Biochemistry and Cellular Biology, , 5000 Namur, Belgium
Exp Cell Res 295:340-9. 2004..This observation is an important data in understanding how tumor growth can occur in challenging environmental conditions...
c-JUN gene induction and AP-1 activity is regulated by a JNK-dependent pathway in hypoxic HepG2 cellsE Minet
Laboratoire de Biochimie et Biologie Cellulaire, FUNDP, 61 rue de Bruxelles, Namur, 5000, Belgium
Exp Cell Res 265:114-24. 2001....
NDRG1 and CRK-I/II are regulators of endothelial cell migration under Intermittent HypoxiaSebastien Toffoli
Laboratory of Biochemistry and Cellular Biology, FUNDP University of Namur, Namur, Belgium
Angiogenesis 12:339-54. 2009..These results give news insight regarding the effects of IH on endothelial cell migration and hence on neoangiogenesis...
Regulation of hypoxia-inducible factor-1alpha protein level during hypoxic conditions by the phosphatidylinositol 3-kinase/Akt/glycogen synthase kinase 3beta pathway in HepG2 cellsDenis Mottet
Laboratory of Biochemistry and Cellular Biology, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
J Biol Chem 278:31277-85. 2003....
Identification of DH IC-2 as a HIF-1 independent protein involved in the adaptive response to hypoxia in tumor cells: A putative role in metastasisSebastien Pyr dit Ruys
URBC, University of Namur FUNDP, B 5000 Namur, Belgium
Biochim Biophys Acta 1793:1676-90. 2009..These results are important to better understand cancer development since they highlight a HIF-1 independent mechanism, which may be involved in metastasis...
BNIP3 protects HepG2 cells against etoposide-induced cell death under hypoxia by an autophagy-independent pathwayJean Philippe Cosse
Laboratory of Biochemistry and Cellular Biology URBC, NAmur Research Institute for LIfe Science NARILIS, FUNDP University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
Biochem Pharmacol 80:1160-9. 2010....
The peroxynitrite donor 3-morpholinosydnonimine activates Nrf2 and the UPR leading to a cytoprotective response in endothelial cellsLaurine Mattart
Research Unit of Cellular Biology, NARILIS Namur Research Institute for Life Sciences, University of Namur FUNDP, Namur, Belgium
Cell Signal 24:199-213. 2012....
Up-regulation of 94-kDa glucose-regulated protein by hypoxia-inducible factor-1 in human endothelial cells in response to hypoxiaSébastien Paris
Laboratory of Biochemistry and Cellular Biology, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
FEBS Lett 579:105-14. 2005..Mutation of two of the three HREs present in this promoter completely inhibited the hypoxia-induced increase in luciferase activity...
Differential effects of hypoxia on etoposide-induced apoptosis according to the cancer cell linesJean Philippe Cosse
Laboratory of Biochemistry and Cellular Biology URBC, FUNDP University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
Mol Cancer 6:61. 2007..However, the mechanisms underlying this resistance still need deeper understanding. The aim of this study was to investigate the effect of hypoxia on this process since hypoxia is one of the hallmarks of tumor environment...
Intermittent hypoxia changes HIF-1alpha phosphorylation pattern in endothelial cells: unravelling of a new PKA-dependent regulation of HIF-1alphaSebastien Toffoli
Laboratory of Biochemistry and Cellular Biology, FUNDP University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
Biochim Biophys Acta 1773:1558-71. 2007....
Dual effect of echinomycin on hypoxia-inducible factor-1 activity under normoxic and hypoxic conditionsBenoit Vlaminck
Laboratory of Biochemistry and Cellular Biology, FUNDP University of Namur, Belgium
FEBS J 274:5533-42. 2007..These findings show, for the first time, that echinomycin has a dual effect on HIF-1 activity under normoxic and hypoxic conditions, demonstrating that this molecule cannot be used in cancer treatment...
CoCl2, a chemical inducer of hypoxia-inducible factor-1, and hypoxia reduce apoptotic cell death in hepatoma cell line HepG2Jean Pascal Piret
Laboratoire de Biologie et Biochimie Cellulaire, FUNDP, 5000 Namur, Belgium
Ann N Y Acad Sci 973:443-7. 2002..These different data suggest a possible antiapoptotic role of HIF-1. More experiments are needed to define if HIF-1 actually plays an active role in cell death protection and to determine the exact mechanism underlying this effect...
Role for casein kinase 2 in the regulation of HIF-1 activityDenis Mottet
Laboratory of Biochemistry and Cellular Biology, University of Namur, Namur, Belgium
Int J Cancer 117:764-74. 2005..Since HIF-1 plays a major role in tumor angiogenesis and since CK2 has been described to be overexpressed in tumor cells, this new pathway of regulation can be one more way for tumor cells to survive...
Casein kinase 2 inhibition decreases hypoxia-inducible factor-1 activity under hypoxia through elevated p53 protein levelAntoine Hubert
Laboratory of Biochemistry and Cellular Biology, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
J Cell Sci 119:3351-62. 2006..Since CK2 activity is increased in hypoxic conditions, this process provides one more mechanism to ensure enhanced HIF-1 activity under such conditions...
Meta-analysis of archived DNA microarrays identifies genes regulated by hypoxia and involved in a metastatic phenotype in cancer cellsMichael Pierre
Molecular Biology Research Unit URBM, University of Namur FUNDP, Namur, Belgium
BMC Cancer 10:176. 2010....
Site-directed mutagenesis studies of the hypoxia-inducible factor-1alpha DNA-binding domainGaetan Michel
Laboratoire de Biochimie et Biologie Cellulaire, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
Biochim Biophys Acta 1578:73-83. 2002..These results bring new insights on the specificity of the protein/DNA interactions for HIF-1 towards HRE...
Surface properties and cell adhesion onto allylamine-plasma and amine-plasma coated glass coverslipsMarianne Crespin
Unité de Recherche en Biologie Cellulaire, Narilis, University of Namur FUNDP, URBC, 61 rue de Bruxelles, 5000, Namur, Belgium
J Mater Sci Mater Med 22:671-82. 2011..A correlation could be observed between wettability and cell proliferation except for C coated surface, indicating that more complex processes than hydrophilicity alone are taking place that affect cell functions...
Mitochondria permeability transition-dependent tert-butyl hydroperoxide-induced apoptosis in hepatoma HepG2 cellsJean Pascal Piret
Laboratory of Biochemistry and Cellular Biology, Facultes Universitaires Notre Dame de la Paix, 61 rue de Bruxelles, 5000 Namur, Belgium
Biochem Pharmacol 67:611-20. 2004..Taken together, these results emphasize the central role played by mitochondria in the initiation of apoptosis in HepG2 cells exposed to oxidant agents...
Hypoxia-Induced Modulation of Apoptosis and BCL-2 Family Proteins in Different Cancer Cell TypesAudrey Sermeus
Laboratory of Biochemistry and Cellular Biology URBC, Narilis, University of Namur FUNDP, Belgium
PLoS ONE 7:e47519. 2012..A better understanding of these cell-to-cell variations is crucial in order to overcome hypoxia-induced resistance and to ameliorate cancer therapy...
Tumour hypoxia affects the responsiveness of cancer cells to chemotherapy and promotes cancer progressionJean Philippe Cosse
Laboratory of Biochemistry and Cellular Biology, FUNDP University of Namur, 5000 Namur, Belgium
Anticancer Agents Med Chem 8:790-7. 2008..The aim of this review is to provide a description of known hypoxia-induced mechanisms of chemoresistance at a cellular level...
Is HIF-1alpha a pro- or an anti-apoptotic protein?Jean Pascal Piret
Laboratoire de Biochimie et Biologie Cellulaire, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium
Biochem Pharmacol 64:889-92. 2002..This review is aimed to describe the different mechanisms that account for these opposite effects of HIF-1alpha...
Transduction pathways involved in Hypoxia-Inducible Factor-1 phosphorylation and activationE Minet
Laboratoire de Biochimie et Biologie Cellulaire, , 61 rue de Bruxelles, 5000 Namur, Belgium
Free Radic Biol Med 31:847-55. 2001..In this review, we summarize some of the latest advances describing the possible signaling pathways leading to HIF-1 phosphorylation and subsequent activation. The physiological relevance of these regulations is also discussed...
Autophagy as a mediator of chemotherapy-induced cell death in cancerAnnick Notte
URBC NARILIS, University of Namur FUNDP, 61 rue de Bruxelles, Namur, Belgium
Biochem Pharmacol 82:427-34. 2011..In this paper, we propose a putative mechanism that could reconcile these two opposite observations...
Hybrid shell engineering of animal cells for immune protections and regulation of drug delivery: towards the design of "artificial organs"Philippe Dandoy
Laboratory of Inorganic Materials Chemistry, Department of Chemistry, The University of Namur FUNDP, Namur, Belgium
PLoS ONE 6:e20983. 2011..At the same time, the number of patients who require full organ transplantations is augmenting. Consequently, new strategies for cell transplantation are the subject of great interest...
Mitochondrial respiratory chain as a new target for anti-ischemic moleculesNajat Bouaziz
Laboratoire de Biochimie et Biologie Cellulaire, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
Eur J Pharmacol 441:35-45. 2002..This anti-ischemic activity is probably due to a protection of complexes I and III of the mitochondrial respiratory chain...
Hypoxia-induced activation of HIF-1: role of HIF-1alpha-Hsp90 interactionE Minet
Laboratoire de Biochimie et Biologie Cellulaire, Facultés Universitaires de la Paix, 61 rue de Bruxelles, 5000, Namur, Belgium
FEBS Lett 460:251-6. 1999..At last, we showed that Hsp90 activity is essential for HIF-1 activation in hypoxia since it is inhibited in the presence of geldanamycin. These results indicate that Hsp90 is a major regulator in HIF-1alpha activation...
PGF(2alpha), a prostanoid released by endothelial cells activated by hypoxia, is a chemoattractant candidate for neutrophil recruitmentT Arnould
Laboratory of Biochemistry and Cellular Biology, University of Namur, Namur, Belgium
Am J Pathol 159:345-57. 2001..These results suggest that PGF(2alpha), a prostanoid abundantly released by the endothelium of hypoxic or ischemic tissues, is a chemoattractant molecule that might be involved in the early recruitment of neutrophils in ischemic organs...
Radioimmunotherapy with radioactive nanoparticles: first results of dosimetry for vascularized and necrosed solid tumorsV Bouchat
Laboratoire d Analyses par Réactions Nucléaires, University of Namur FUNDP, Rue de Bruxelles 61, B 5000 Namur, Belgium
Med Phys 34:4504-13. 2007....
HIF1A gene transcription is dependent on a core promoter sequence encompassing activating and inhibiting sequences located upstream from the transcription initiation site and cis elements located within the 5'UTRE Minet
Laboratoire de Biochimie et Biologie Cellulaire, Facultés Universitaires de la Paix, 61 rue de Bruxelles, Namur, 5000, Belgium
Biochem Biophys Res Commun 261:534-40. 1999..Finally, we demonstrate that HIF1A gene transcription is dependent on Sp1 binding sites and that the 5'UTR sequence also contains other important cis-acting elements...
Effect of hydroxyethylrutosides on hypoxial-induced neutrophil adherence to umbilical vein endotheliumI H Roland
Laboratoire de Biochimie et Biologie Cellulaire, Facultes Universitaires Notre Dame de la Paix, Namur, Belgium
Cardiovasc Drugs Ther 12:375-81. 1998....
Radioimmunotherapy with radioactive nanoparticles: biological doses and treatment efficiency for vascularized tumors with or without a central hypoxic areaV Bouchat
Research center in Physics of Matter and Radiation, Laboratoire d Analyses par Réactions Nucléaires, University of Namur, Rue de Bruxelles 61, B 5000 Namur, Belgium
Med Phys 37:1826-39. 2010....
ERK activation upon hypoxia: involvement in HIF-1 activationE Minet
Laboratoire de Biochimie et Biologie Cellulaire, Facultés Universitaires de la Paix, 61 rue de Bruxelles, 5000, Namur, Belgium
FEBS Lett 468:53-8. 2000..These results evidence the role of mitogen-activated protein kinase in the transcriptional response to hypoxia...
A model for the complex between the hypoxia-inducible factor-1 (HIF-1) and its consensus DNA sequenceG Michel
Laboratoire de Chimie Moleculaire Structurale, Facultes Universitaires, Notre Dame de la Paix, Namur, Belgium
J Biomol Struct Dyn 18:169-79. 2000..From these results, we postulate that the specificity of HIF-1 toward its DNA sequence could be driven by the HIF-1alpha subunit. The predicted model will be verified by X-Ray currently ongoing...
Comparison of the clonogenic survival of A549 non-small cell lung adenocarcinoma cells after irradiation with low-dose-rate beta particles and high-dose-rate X-raysAnne Catherine Wéra
Department of Physics, University of Namur, Belgium
Int J Radiat Biol 88:253-7. 2012..This work investigates the phosphorus beta irradiation ((32)P) dose response on the clonogenicity of human A549 non-small cell lung adenocarcinoma cells and compares it to high-dose-rate X-irradiations results...
Intermittent hypoxia is a key regulator of cancer cell and endothelial cell interplay in tumoursS Toffoli
Laboratory of Biochemistry and Cellular Biology URBC, University of Namur FUNDP, 61 rue de Bruxelles, Namur, Belgium
FEBS J 275:2991-3002. 2008..In this article, we review the effects of intermittent hypoxia on tumour and endothelial cells as well as its impacts on tumour development...
Hypoxia-induced increase in intracellular calcium concentration in endothelial cells: role of the Na(+)-glucose cotransporterN Berna
Laboratoire de Biochimie et Biologie Cellulaire, , 61, rue de Bruxelles, B-5000 Namur, Belgium
J Cell Biochem 84:115-31. 2001....
Effects of homocysteine on the cellular responses of murine endothelial cells cultured in vitroA Tacheny
Department of Biology, Laboratory of Cellular Biochemistry and Biology, University of Namur (FUNDP, Namur, Belgium
Ann N Y Acad Sci 973:550-4. 2002..The DNA chip was designed to follow the expression at the mRNA level of some major proinflammatory genes; TNF-alpha was used as a positive control...
Reactive oxygen species activate the HIF-1alpha promoter via a functional NFkappaB siteSteve Bonello
Experimental Pediatric Cardiology, Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Center Munich at the TU Munich, Lazarettstr 36, D 80636 Munich, Germany
Arterioscler Thromb Vasc Biol 27:755-61. 2007..We therefore aimed to elucidate the link between these 2 important redox-sensitive transcription factors...
Preconditioning of the tumor vasculature and tumor cells by intermittent hypoxia: implications for anticancer therapiesPhilippe Martinive
Unit of Pharmacology and Therapeutics (FATH 5349, , B-1200 Brussels, Belgium
Cancer Res 66:11736-44. 2006..Our observations also underscore the potential of drugs targeting HIF-1alpha to resensitize the tumor vasculature to anticancer treatments...
Glycogen synthase kinase 3 phosphorylates hypoxia-inducible factor 1alpha and mediates its destabilization in a VHL-independent mannerDaniela Flügel
Fachbereich Chemie, Abteilung Biochemie, Universitat Kaiserslautern, Erwin Schrödinger Str Geb 54, D 67663 Kaiserslautern, Germany
Mol Cell Biol 27:3253-65. 2007..Thus, the direct regulation of HIF-1alpha stability by GSK-3 may influence physiological processes or pathophysiological situations such as metabolic diseases or tumors...
Endothelial von Willebrand factor recruits platelets to atherosclerosis-prone sites in response to hypercholesterolemiaGregor Theilmeier
Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
Blood 99:4486-93. 2002..05). In conclusion, hypercholesterolemia primes platelets for recruitment via VWF, GPIb alpha, and P-selectin to lesion-prone sites, before lesions are detectable...
