Dragica Pavlovic, Dragana Miloradovic, Milica Dimitrijevic Stojanovic, Carl Randall Harrell, Riccardo Polosa, Sonja Rust, Giovanni Li Volti, Massimo Caruso, Vladimir Jakovljevic, Valentin Djonov, Vladislav Volarevic
Detrimental effects of smoking on mesenchymal stem cell (MSC)-dependent immunosuppression and hepatoprotection are unknown. Herewith, by using α-galactosylceramide (α-GalCer)-induced liver injury, a well-established murine model of fulminant hepatitis, we examined molecular mechanisms which were responsible for negative effects of cigarette smoke on MSC-dependent immunomodulation. MSC which were grown in cigarette smoke-exposed medium (MSCWS-CM ) obtained pro-inflammatory phenotype, were not able to optimally produce hepatoprotective and immunosuppressive cytokines (TGF-β, HGF, IL-10, NO, KYN), and secreted significantly higher amounts of inflammatory cytokines (IFN-γ, TNF-α, IL-17, IL-6) than MSC that were cultured in standard medium never exposed to cigarette smoke (MSCCM )...
August 10, 2023: Toxicology Letters