Search results for "messenger"

showing 3 items of 1493 documents

Rho GTPases in human breast tumours: expression and mutation analyses and correlation with clinical parameters

2002

In the present study, we addressed the question of a putative relevance of Rho proteins in tumour progression by analysing their expression on protein and mRNA level in breast tumours. We show that the level of RhoA, RhoB, Rac1 and Cdc42 protein is largely enhanced in all tumour samples analysed (n=15) as compared to normal tissues originating from the same individual. The same is true for 32P-ADP-ribosylation of Rho proteins which is catalysed by Clostridium botulinum exoenzyme C3. Also the amount of Rho-GDI and ERK2 as well as the level of overall 32P-GTP binding acvitity was tumour-specific elevated, yet to a lower extent than Rho proteins. Although the amount of Rho proteins was enhance…

rac1 GTP-Binding Proteinrho GTP-Binding ProteinsCancer ResearchRHOAProliferation indexRHOBBlotting WesternDNA Mutational AnalysisRhoCGene ExpressionBreast NeoplasmsRAC1breast tumoursCDC42Polymerase Chain ReactionRho GTPasesRhoB GTP-Binding ProteinHumansBreastRNA Messengercdc42 GTP-Binding ProteinrhoB GTP-Binding Proteinmutation analysisADP Ribose TransferasesMitogen-Activated Protein Kinase 1biologyGenetics and GenomicsMolecular biologyOncologyCdc42 GTP-Binding ProteinMutationtumour progressionDisease Progressionbiology.proteinFemaleGuanosine TriphosphaterhoA GTP-Binding ProteinBritish Journal of Cancer
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Maturation of Epidermal Langerhans Cells In Vitro Is Accompanied by Downregulation of 4F2 (CD98) as Determined by Differential Display

1998

Following short-term culture, Langerhans cells mature morphologically and functionally into potent immunostimulatory cells. As regulation of gene expression accompanies this maturation process, it is likely that differentially expressed genes are involved in the maturation events. Using the recently described method of differential display, we generated cDNA expression patterns starting with mRNA of murine epidermal Langerhans cells isolated either directly (fLC) or following 3 d cultivation (cLC). Five hundred putative differentially expressed cDNA fragments were recovered from the gel. For a part of the fragments differential expression was confirmed by dot blot and Southern hybridization…

skinLangerhans cellDNA ComplementaryDown-RegulationFusion Regulatory Protein-1GrowthDermatologyBiologyBiochemistryMiceDownregulation and upregulationAntigens CDComplementary DNAmedicineAnimalsRNA MessengerCloning Moleculardifferential gene expressionGeneMolecular BiologySouthern blotRegulation of gene expressionJNK2Differential displayMice Inbred BALB Cepidermal cellsGene Expression Regulation DevelopmentalCell BiologyMolecular biologyMice Inbred C57BLmedicine.anatomical_structureGenesCell cultureLangerhans CellsAntigens SurfaceCarrier ProteinsSequence AnalysisJournal of Investigative Dermatology
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Molecular Basis of SARS-CoV-2 Nsp1-Induced Immune Translational Shutdown as Revealed by All-Atom Simulations.

2021

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic represents the most severe global health crisis in modern human history. One of the major SARS-CoV-2 virulence factors is nonstructural protein 1 (Nsp1), which, outcompeting with the binding of host mRNA to the human ribosome, triggers a translation shutdown of the host immune system. Here, microsecond-long all-atom simulations of the C-terminal portion of the SARS-CoV-2/SARS-CoV Nsp1 in complex with the 40S ribosome disclose that SARS-CoV-2 Nsp1 has evolved from its SARS-CoV ortholog to more effectively hijack the ribosome by undergoing a critical switch of Q/E158 and E/Q159 residues that perfects Nsp1's interactions…

virusesSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)VirulenceBiologyMolecular Dynamics SimulationViral Nonstructural ProteinsRibosomeImmune systemHumansGeneral Materials ScienceEukaryotic Small Ribosomal SubunitPhysical and Theoretical Chemistryskin and connective tissue diseasesRibosome Subunits Small EukaryoticMessenger RNANSP1SARS-CoV-2fungivirus diseasesCOVID-19Translation (biology)Hydrogen BondingCell biologybody regionsSettore CHIM/03 - Chimica Generale E InorganicaProtein BindingThe journal of physical chemistry letters
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