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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Characterization of a novel CD8+ T-cell subset with polyamine metabolism signature
 Cimermanová, Veronika ; Štěpánek, Ondřej (advisor) ; Dobeš, Jan (referee)
CD8+ T cells play a crucial role in the adaptive immune response to combat infections and tumors. Previous research into T-cell heterogeneity has revealed that subsets of antigen- experienced CD8+ T cells possess different functional properties. However, the functional diversity might already be predetermined in their naïve steady-state precursors. Recently, the Lab of Adaptive Immunity discovered a new and rare murine steady-state CD8+ T-cell subset, known as Tpam cells (CD8+ T cells with polyamine metabolism signature). Since polyamine metabolism has been linked to T-cell activation and differentiation, studying this novel subset can provide new insight into the fate of CD8+ T cells upon TCR stimulation. This diploma thesis aimed to characterize Tpam cells in terms of their origin, steady-state phenotype, fate after TCR stimulation, and potential functional role. We took advantage of various mouse models to investigate the formation of Tpam cells and found that they are dependent on a diverse TCR repertoire and are presumably formed by low-grade TCR signaling. We executed an adoptive transfer into T-cell deficient mouse model to examine their steady-state phenotype and performed an ex vivo TCR-mediated activation assay to observe their fate after activation. Our findings show that Tpam cells are...
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