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1.	Sen, Partho, et al. (författare) Quantitative analysis of human CD4+T-cell differentiation reveals subset-specific regulation of glycosphingolipid pathways 2021 Ingår i: European Journal of Immunology. - : John Wiley & Sons. - 0014-2980 .- 1521-4141. ; 51:Suppl. 1, s. 237-237 Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract T‐cells are sentinels of adaptive immune responses. T‐cell activation, proliferation and differentiation involves metabolic reprogramming involving the interplay of genes, proteins and metabolites. Here, we aim to understand the metabolic pathways involved in the activation and functional differentiation of human CD4+ T‐cell subsets (Th1, Th2, Th17 and iTregs). We combined genome‐scale metabolic modeling, gene expression data, targeted and non‐targeted lipidomics experiments, together with in vitro gene knockdown experiments and showed that human CD4+ T cells undergo specific metabolic changes during activation and functional differentiation. In addition, we identified and confirmed the importance of ceramide and glycosphingolipid biosynthesis pathways in Th17 differentiation and effector functions. Through in vitro gene knockdown experiments, we substantiated the requirement of serine palmitoyl transferase, a de novo sphingolipid pathway in the expression of proinflammatory cytokine (IL17A and IL17F) by Th17 cells. Our findings may provide a comprehensive resource for identifying CD4+ T‐cell‐specific targets for their selective manipulation under disease conditions, particularly, diseases characterized by an imbalance of Th17/nTreg cells.

Sen, Partho, et al. (författare)
Quantitative analysis of human CD4+T-cell differentiation reveals subset-specific regulation of glycosphingolipid pathways
2021
Ingår i: European Journal of Immunology. - : John Wiley & Sons. - 0014-2980 .- 1521-4141. ; 51:Suppl. 1, s. 237-237
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- T‐cells are sentinels of adaptive immune responses. T‐cell activation, proliferation and differentiation involves metabolic reprogramming involving the interplay of genes, proteins and metabolites. Here, we aim to understand the metabolic pathways involved in the activation and functional differentiation of human CD4+ T‐cell subsets (Th1, Th2, Th17 and iTregs). We combined genome‐scale metabolic modeling, gene expression data, targeted and non‐targeted lipidomics experiments, together with in vitro gene knockdown experiments and showed that human CD4+ T cells undergo specific metabolic changes during activation and functional differentiation. In addition, we identified and confirmed the importance of ceramide and glycosphingolipid biosynthesis pathways in Th17 differentiation and effector functions. Through in vitro gene knockdown experiments, we substantiated the requirement of serine palmitoyl transferase, a de novo sphingolipid pathway in the expression of proinflammatory cytokine (IL17A and IL17F) by Th17 cells. Our findings may provide a comprehensive resource for identifying CD4+ T‐cell‐specific targets for their selective manipulation under disease conditions, particularly, diseases characterized by an imbalance of Th17/nTreg cells.

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