0000000000915052

AUTHOR

Maarit Hänninen

showing 2 related works from this author

Changes associated with aging and replicative senescence in the regulation of transcription factor nuclear factor-kappa B.

1996

Both the aging of animals and the senescence of cultured cells involve an altered pattern of gene expression, suggesting changes in transcription factor regulation. We studied age-related changes in transcription factors nuclear factor (NF)-kappa B, activator protein factor-1 (AP-1) and Sp-1 by using electrophoretic mobility shift binding assays; we also analysed changes in the protein components of NF-kappa B complex with Western blot assays. Nuclear and cytoplasmic extracts were prepared from heart, liver, kidney and brain of young adult and old NMRI mice and Wistar rats as well as from presenescent, senescent and simian virus 40-immortalized human WI-38 fibroblasts. Aging of both mice an…

SenescenceMaleAgingBlotting WesternSimian virus 40BiologyTransfectionBiochemistryCell LineMiceWestern blotGene expressionmedicineAnimalsHumansRats WistarMolecular BiologyTranscription factorLungCellular SenescenceCell Line TransformedRegulation of gene expressionReporter genemedicine.diagnostic_testMyocardiumNF-kappa BGene Expression Regulation DevelopmentalHeartCell BiologyNFKB1Molecular biologyRecombinant ProteinsRatsB vitaminsLiverFemaleCell DivisionResearch Article
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Aging-induced Up-regulation of Nuclear Binding Activities of Oxidative Stress Responsive NF-kB Transcription Factor in Mouse Cardiac Muscle

1996

The accumulation of lipofuscin to cardiomyocytes is a classical parameter of aging and is believed to reflect oxidative stress. NF-kB transcription factor complex is one of the cellular sensors which responds to oxidative stress and regulates gene expression. Our purpose was to study whether aging affects the level and distribution of DNA binding activities of NF-kB transcription factors both in cardiac sarcoplasm and nuclear extracts. We used electrophoretic mobility shift assays (EMSA) to characterize the DNA binding activities of NF-kB and two other transcription factors. AP-1 and Sp-1, in the myocardium of 4 months and 24 months old male and female NMRI-mice. The protein levels of p50, …

MaleAgingP50Sp1 Transcription FactorSarcoplasmDown-RegulationTranscription factor complexBiologymedicine.disease_causeMiceNF-KappaB Inhibitor alphaGene expressionmedicineAnimalsMolecular BiologyTranscription factorCell NucleusMyocardiumNF-kappa BTranscription Factor RelACardiac muscleNF-kappa B p50 SubunitNF-kappa B p50 SubunitMolecular biologyUp-RegulationDNA-Binding ProteinsTranscription Factor AP-1Oxidative Stressmedicine.anatomical_structureFemaleI-kappa B ProteinsCardiology and Cardiovascular MedicineOxidative stressJournal of Molecular and Cellular Cardiology
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