Search results for "Signaling Lymphocytic Activation Molecule Family Member 1"

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Tif1γ regulates the TGF-β1 receptor and promotes physiological aging of hematopoietic stem cells.

2014

The hematopoietic system declines with age. Myeloid-biased differentiation and increased incidence of myeloid malignancies feature aging of hematopoietic stem cells (HSCs), but the mechanisms involved remain uncertain. Here, we report that 4-mo-old mice deleted for transcription intermediary factor 1γ (Tif1γ) in HSCs developed an accelerated aging phenotype. To reinforce this result, we also show that Tif1γ is down-regulated in HSCs during aging in 20-mo-old wild-type mice. We established that Tif1γ controls TGF-β1 receptor (Tgfbr1) turnover. Compared with young HSCs, Tif1γ(-/-) and old HSCs are more sensitive to TGF-β signaling. Importantly, we identified two populations of HSCs specifical…

AgingMyeloidReceptor Transforming Growth Factor-beta Type IReceptors Cell SurfaceCell SeparationBiologyProtein Serine-Threonine KinasesTransforming Growth Factor beta1MiceSignaling Lymphocytic Activation Molecule Family Member 1Antigens CDmedicineAnimalsMyeloid CellsRNA MessengerPolyubiquitinTranscription factorCellular SenescenceRegulation of gene expressionMultidisciplinaryUbiquitinationhemic and immune systemsBiological SciencesHematopoietic Stem CellsCell biologyHematopoiesisHaematopoiesismedicine.anatomical_structurePhysiological AgingPhenotypeGene Expression RegulationSignal transductionStem cellCell agingReceptors Transforming Growth Factor betaSignal TransductionTranscription FactorsProceedings of the National Academy of Sciences of the United States of America
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