0000000000348976

AUTHOR

Christian Jassoy

showing 2 related works from this author

Activation of cGMP-dependent Protein Kinase Iβ Inhibits Interleukin 2 Release and Proliferation of T Cell Receptor-stimulated Human Peripheral T Cells

2000

Several major functions of type I cGMP-dependent protein kinase (cGK I) have been established in smooth muscle cells, platelets, endothelial cells, and cardiac myocytes. Here we demonstrate that cGK Ibeta is endogenously expressed in freshly purified human peripheral blood T lymphocytes and inhibits their proliferation and interleukin 2 release. Incubation of human T cells with the NO donor, sodium nitroprusside, or the membrane-permeant cGMP analogs PET-cGMP and 8-pCPT-cGMP, activated cGK I and produced (i) a distinct pattern of phosphorylation of vasodilator-stimulated phosphoprotein, (ii) stimulation of the mitogen-activated protein kinases ERK1/2 and p38 kinase, and, upon anti-CD3 stimu…

Blood PlateletsNitroprussideInterleukin 2Cell Membrane PermeabilityCD3 ComplexT-Lymphocytesp38 mitogen-activated protein kinasesT cellReceptors Antigen T-CellCell SeparationBiologyLymphocyte ActivationBiochemistryJurkat cellsJurkat CellsCyclic AMPCyclic GMP-Dependent Protein KinasesmedicineHumansProtein kinase ACyclic GMPMolecular BiologyCyclic GMP-Dependent Protein Kinase Type IKinaseCell growthMicrofilament ProteinsCell BiologyPhosphoproteinsMolecular biologyCell biologyEnzyme ActivationAlternative Splicingmedicine.anatomical_structureInterleukin-2Mitogen-Activated Protein KinasesCell Adhesion MoleculescGMP-dependent protein kinasemedicine.drugJournal of Biological Chemistry
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NFAT transcription factors control HIV-1 expression through a binding site downstream of TAR region.

2004

NFAT factors control HIV-1 transcription. We show here that, in addition to binding to two NF-kappaB/NFAT sites within the U3 HIV LTR, NFATc1 and NFATc2 bind to an NFAT site within the LTR's U5 region. Mutations in this site which abolish NFAT binding reduce the ability of NFATs to transactivate LTR-mediated transcription. Mutations in all three NFAT sites strongly interfered with LTR induction, but affected moderately the stimulatory effect of Tat.

Transcription GeneticvirusesImmunologyTransfectionJurkat cellsJurkat CellsTranscription (biology)Immunology and AllergyHumansNuclear proteinBinding siteTranscription factorHIV Long Terminal RepeatBinding SitesNFATC Transcription FactorsChemistryNuclear ProteinsNFATHematologyU937 CellsNFATC Transcription FactorsMolecular biologyDNA-Binding Proteinscardiovascular systemHIV-1HIV Long Terminal RepeatTranscription FactorsImmunobiology
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