Research Topics
Genomes and Genes | Tarik IssadSummaryCountry: France Publications
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Publications
Interaction of PTPB with the insulin receptor precursor during its biosynthesis in the endoplasmic reticulumT Issad
Department of Cell Biology, Institut Cochin, CNRS UMR 8104, INSERM U567, Universite Paris V, 22, Rue Mechain, 75014 Paris, France
Biochimie 87:111-6. 2005..Localisation of PTP1B to the endoplasmic reticulum may be important to prevent insulin-independent autonomous activity of the immature insulin receptor precursor...
The use of bioluminescence resonance energy transfer for the study of therapeutic targets: application to tyrosine kinase receptorsTarik Issad
Institut Cochin, Department of Cell Biology, Universite Paris Descartes, CNRS UMR 8104, 22 rue Mechain, 75014 Paris, France
Expert Opin Ther Targets 11:541-56. 2007..In addition, BRET can be used to develop high-throughput screening assays for the search of molecules with therapeutic interest and could, therefore, constitute a valuable tool for laboratories involved in drug discovery...
Looking for an insulin pill? Use the BRET methodology!T Issad
Department of Cell Biology, Institut Cochin, CNRS UMR 8104, INSERM U567, Universite Paris V, Paris, France
Diabetes Metab 29:111-7. 2003..Therefore, this methodology can also be used in high-throughput screening for the search of molecules that will specifically disrupt the interaction between the insulin receptor and PTP1B...
The activity of the insulin receptor assessed by bioluminescence resonance energy transferTarik Issad
CNRS, INSERM, Department of Cell Biology, Universite Rene Descartes, Cochin Institute, 75014 Paris, France
Ann N Y Acad Sci 973:120-3. 2002..This work describes a new assay, based on the bioluminescence resonance energy transfer (BRET) methodology, to monitor the activation state of the insulin receptor...
A homogenous assay to monitor the activity of the insulin receptor using Bioluminescence Resonance Energy TransferTarik Issad
Department of Cell Biology, Cochin Institute, CNRS, INSERM, University Rene Descartes, 22 rue Mechain, 75014 Paris, France
Biochem Pharmacol 64:813-7. 2002..This methodology allows for rapid analysis of the effects of agonists on insulin receptor activity and could, therefore, be used in high-throughput screening for the discovery of molecules with insulin-like properties...
Interaction with Grb14 results in site-specific regulation of tyrosine phosphorylation of the insulin receptorSebastien Nouaille
Departement de Biologie Cellulaire, Institut Cochin, Universite Paris Descartes, 22 rue Mechain, UMRCNRS 8104, INSERM U567, Paris 75014, France
EMBO Rep 7:512-8. 2006..Our work therefore suggests that Grb14 may regulate signalling through the IR by controlling its tyrosine dephosphorylation in a site-specific manner...
Monitoring the activation state of insulin/insulin-like growth factor-1 hybrid receptors using bioluminescence resonance energy transferChristophe Blanquart
Department of Cell Biology, Institut Cochin, , 75014 Paris, France
Mol Pharmacol 70:1802-11. 2006..Therefore, both methods allow monitoring of the activity of IRA/IGF1R hybrid receptor and could be used to detect molecules of therapeutic interest for the treatment of cancer...
Monitoring the activation state of the insulin-like growth factor-1 receptor and its interaction with protein tyrosine phosphatase 1B using bioluminescence resonance energy transferChristophe Blanquart
Department of Cell Biology, Institut Cochin, , 75014 Paris, France
Mol Pharmacol 68:885-94. 2005..In conclusion, these BRET-based assays permit 1) the rapid evaluation of the effects of agonists or inhibitory molecules on IGF1R activation and 2) the analysis of the regulation of IGF1R-PTP1B interaction in living cells...
Protein tyrosine phosphatase-1B and T-cell protein tyrosine phosphatase regulate IGF-2-induced MCF-7 cell migrationChristophe Blanquart
Institut Cochin, Universite Paris Descartes, CNRS UMR 8104, Paris, France
Biochem Biophys Res Commun 392:83-8. 2010..This novel finding reinforces the potential role of these PTPases as therapeutic targets for treatment of breast cancer...
O-GlcNAc modification of FoxO1 increases its transcriptional activity: a role in the glucotoxicity phenomenon?Meishiue Kuo
Institut Cochin, Universite Paris Descartes, CNRS UMR 8104, Paris, France
Biochimie 90:679-85. 2008....
Characterization of IRA/IRB hybrid insulin receptors using bioluminescence resonance energy transferChristophe Blanquart
Institut Cochin, Universite Paris Descartes, CNRS UMR 8104, Paris, France
Biochem Pharmacol 76:873-83. 2008....
Dynamics of the interaction between the insulin receptor and protein tyrosine-phosphatase 1B in living cellsNicolas Boute
Department of Cell Biology, Institut Cochin, CNRS UMR 8104, INSERM U567, Universite Paris V, 22 rue Mechain, 75014 Paris, France
EMBO Rep 4:313-9. 2003..Therefore, localization of PTP1B in this compartment might be important for the regulation of insulin receptors during their biosynthesis...
[A new mode of reglulation of FoxO1 by O-GlcNAc glycosylation: involvement in the glucotoxicity phenomenon]Meishiue Kuo
Institut Cochin, , CNRS (UMR 8104, INSERM, U567, 22, , 75014 Paris, France
Med Sci (Paris) 24:369-71. 2008
[O-GlcNAc glycosylation and regulation of cell signaling]Tarik Issad
Institut Cochin, 22, 75014 Paris, France
Med Sci (Paris) 26:753-9. 2010..This negative feedback may be exacerbated when cells are exposed to elevated glucose concentrations as observed in diabetic patients, and could thereby contribute to insulin resistance and worsening of hyperglycaemia. double dagger...
Bioluminescence resonance energy transfer to monitor protein-protein interactionsTarik Issad
Institut Cochin, INSERM, CNRS, , France
Methods Mol Biol 332:195-209. 2006..Determination of the proportion of the dimeric vs monomeric form of a protein in the cell also is possible. Therefore, the BRET technology can be considered as a new and powerful tool in the field of protein-protein interactions...
Molecular determinants of Grb14-mediated inhibition of insulin signalingDiana Goenaga
Institut Cochin, Universite Paris Descartes, Centre National de la Recherche Scientifique CNRS Unité Mixte de Recherche UMR 8104, Paris, France
Mol Endocrinol 23:1043-51. 2009..Indeed, a precise knowledge of the molecular mechanism of insulin signaling inhibition by Grb14 is a prerequisite for the development of insulin-sensitizing molecules to treat pathophysiological states such as obesity or type 2 diabetes...
Desensitization of the beta-adrenergic response in human brown adipocytesR Jockers
CNRS UPR 0415 and Université Paris VII, Institut Cochin de Genetique Moleculaire, France
Endocrinology 139:2676-84. 1998..Further studies should establish whether the beta3AR is coupled to other signaling pathways in human brown adipocytes and whether these may contribute to BAT hypertrophy and/or thermogenesis...
O-glycosylation of FoxO1 increases its transcriptional activity towards the glucose 6-phosphatase geneMeishiue Kuo
Institut Cochin, Universite Paris Descartes, 22 rue Mechain, CNRS UMR 8104, Paris, France
FEBS Lett 582:829-34. 2008..Since glucose-6-phosphatase plays a key role in hepatic glucose production, our observation may be of importance with regard to glucotoxicity associated with chronic hyperglycaemia in diabetes...
The use of resonance energy transfer in high-throughput screening: BRET versus FRETNicolas Boute
Institut Cochin, CNRS UMR 8104, INSERM U567, , , , 75014, Paris, France
Trends Pharmacol Sci 23:351-4. 2002..This technique constitutes an important tool for the study of the functional activity of different types of receptors, and can be used in sensitive, homogenous high-throughput screening assays...
O-GlcNAc modification of transcription factors, glucose sensing and glucotoxicityTarik Issad
Institut Cochin, Universite Paris Descartes, CNRS UMR 8104, Paris, France
Trends Endocrinol Metab 19:380-9. 2008....
Monitoring the activation state of the insulin receptor using bioluminescence resonance energy transferN Boute
, , Paris, France
Mol Pharmacol 60:640-5. 2001..This method allows for rapid analysis of the effects of agonists on insulin receptor activity and could therefore be used in a high-throughput screening test for discovery of molecules with insulin-like properties...
Implication of protein tyrosine phosphatase 1B in MCF-7 cell proliferation and resistance to 4-OH tamoxifenChristophe Blanquart
Institut Cochin, Universite Paris Descartes, CNRS, UMR, Paris, France
Biochem Biophys Res Commun 387:748-53. 2009..siRNA experiments showed that PTP1B, but not TC-PTP, is necessary for resistance to 4-OH tamoxifen. Therefore, our work indicates that PTP1B could be a relevant therapeutic target for treatment of tamoxifen-resistant breast cancers...
Stimulation of the extracellular signal-regulated kinase 1/2 pathway by human beta-3 adrenergic receptor: new pharmacological profile and mechanism of activationC C Gerhardt
Institut Cochin de Genetique Moleculaire, Centre National de la Recherche Scientifique and Université Paris VII, Laboratoire d Immuno Pharmacologie Moléculaire, Paris, France
Mol Pharmacol 55:255-62. 1999..As was observed for the activation of ERK, the activation of protein kinase B is inhibited by preincubation with pertussis toxin and PI3K inhibitors, suggesting that both are a consequence of a Gi/o-mediated activation of PI3K...
Effect of dexamethasone on adipocyte differentiation markers and tumour necrosis factor-alpha expression in human PAZ6 cellsV Zilberfarb
Institute Cochin of Molecular Genetics, Paris, France
Diabetologia 44:377-86. 2001....
The formation of an intrachain disulfide bond in the leptin protein is necessary for efficient leptin secretionN Boute
Department of Cell Biology, Institut Cochin, UMR CNRS 8104, INSERM U567, Universite Paris 5, 22, Rue Mechain, 75014 Paris, France
Biochimie 86:351-6. 2004..Moreover, the similarity of the behavior of R105W mutant and cystein mutants suggests that the lack of secretion observed with the naturally occurring mutant could result from impaired disulfide bond formation...
Effects of intranasal administration of a leptin-secreting Lactococcus lactis recombinant on food intake, body weight, and immune response of miceLuis G Bermúdez Humarán
Unité d Ecologie et de Physiologie du Système Digestif, INRA, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
Appl Environ Microbiol 73:5300-7. 2007..These results demonstrate that leptin can be produced and secreted in an active form by L. lactis and that leptin-producing L. lactis regulates in vivo antigen-specific immune responses, as well as body weight and food consumption...
