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    Université de Fribourg

    Meta-analysis of metabolites involved in bioenergetic pathways reveals a pseudohypoxic state in Down syndrome

    Pecze, Laszlo ; Randi, Elisa B. ; Szabo, Csaba

    In: Molecular Medicine, 2020, vol. 26, no. 1, p. 102

    Clinical observations and preclinical studies both suggest that Down syndrome (DS) may be associated with significant metabolic and bioenergetic alterations. However, the relevant scientific literature has not yet been systematically reviewed. The aim of the current study was to conduct a meta-analysis of metabolites involved in bioenergetics pathways in DS to conclusively determine the...

    Université de Fribourg

    Role of 3-mercaptopyruvate sulfurtransferase in the regulation of proliferation, migration, and bioenergetics in murine colon cancer cells

    Augsburger, Fiona ; Randi, Elisa B. ; Jendly, Mathieu ; Ascencao, Kelly ; Nahzli Dilek ; Szabo, Csaba

    In: Biomolecules, 2020, vol. 10, no. 3, p. 447

    3-mercaptopyruvate sulfurtransferase (3-MST) has emerged as one of the significant sources of biologically active sulfur species in various mammalian cells. The current study was designed to investigate the functional role of 3- MST’s catalytic activity in the murine colon cancer cell line CT26. The novel pharmacological 3-MST inhibitor HMPSNE was used to assess cancer cell proliferation,...

    Université de Fribourg

    Overproduction of H2S, generated by CBS, inhibits mitochondrial Complex IV and suppresses oxidative phosphorylation in Down syndrome

    Panagaki, Theodora ; Randi, Elisa B. ; Augsburger, Fiona ; Szabo, Csaba

    In: Proceedings of the National Academy of Sciences, 2019, p. 201911895

    Down syndrome (DS) is associated with significant perturbances in mitochondrial function. Here we tested the hypothesis that the suppression of mitochondrial electron transport in DS cells is due to high expression of cystathionine-β-synthase (CBS) and subsequent overproduction of the gaseous transmitter hydrogen sulfide (H2S). Fibroblasts from DS individuals showed higher CBS expression...