Dibenzoylthiamine Has Powerful Antioxidant and Anti-Inflammatory Properties in Cultured Cells and in Mouse Models of Stress and Neurodegeneration
Margaux Sambon,
Anna Gorlova,
Alice Demelenne,
Judit Alhama-Riba,
Bernard Coumans,
Bernard Lakaye,
Pierre Wins,
Marianne Fillet,
Daniel C. Anthony,
Tatyana Strekalova,
Lucien Bettendorff
Affiliations
Margaux Sambon
Laboratory of Neurophysiology, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
Anna Gorlova
Department of Psychiatry and Neuropsychology, Maastricht University, 6200 MD Maastricht, The Netherlands
Alice Demelenne
Laboratory for the Analysis of Medicines, CIRM, Department of Pharmacy, University of Liège, 4000 Liège, Belgium
Judit Alhama-Riba
Laboratory of Neurophysiology, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
Bernard Coumans
Laboratory of Molecular Regulation of Neurogenesis, GIGA-Stem Cell, University of Liège, 4000 Liège, Belgium
Bernard Lakaye
Laboratory of Molecular Regulation of Neurogenesis, GIGA-Stem Cell, University of Liège, 4000 Liège, Belgium
Pierre Wins
Laboratory of Neurophysiology, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
Marianne Fillet
Laboratory for the Analysis of Medicines, CIRM, Department of Pharmacy, University of Liège, 4000 Liège, Belgium
Daniel C. Anthony
Institute of Molecular Medicine Laboratory of Psychiatric Neurobiology and Department of Normal Physiology, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
Tatyana Strekalova
Department of Psychiatry and Neuropsychology, Maastricht University, 6200 MD Maastricht, The Netherlands
Lucien Bettendorff
Laboratory of Neurophysiology, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
Thiamine precursors, the most studied being benfotiamine (BFT), have protective effects in mouse models of neurodegenerative diseases. BFT decreased oxidative stress and inflammation, two major characteristics of neurodegenerative diseases, in a neuroblastoma cell line (Neuro2a) and an immortalized brain microglial cell line (BV2). Here, we tested the potential antioxidant and anti-inflammatory effects of the hitherto unexplored derivative O,S-dibenzoylthiamine (DBT) in these two cell lines. We show that DBT protects Neuro2a cells against paraquat (PQ) toxicity by counteracting oxidative stress at low concentrations and increases the synthesis of reduced glutathione and NADPH in a Nrf2-independent manner. In BV2 cells activated by lipopolysaccharides (LPS), DBT significantly decreased inflammation by suppressing translocation of NF-κB to the nucleus. Our results also demonstrate the superiority of DBT over thiamine and other thiamine precursors, including BFT, in all of the in vitro models. Finally, we show that the chronic administration of DBT arrested motor dysfunction in FUS transgenic mice, a model of amyotrophic lateral sclerosis, and it reduced depressive-like behavior in a mouse model of ultrasound-induced stress in which it normalized oxidative stress marker levels in the brain. Together, our data suggest that DBT may have therapeutic potential for brain pathology associated with oxidative stress and inflammation by novel, coenzyme-independent mechanisms.
