ArticleCell communication and signaling : CCS2025
Depletion of myeloid cells in AG129 mice reduces the infection-mediated oxidative stress and restrains dengue virus-induced thymic atrophy.
Article in Cell communication and signaling : CCS, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundInfection-associated thymic atrophy is common and results in T-cell imbalance and immune dysfunction. Severe dengue, caused by infection with the dengue virus (DV), is associated with perturbation of T cell functions. However, it is unclear whether perturbation of T cell functions is linked to changes in thymic function during dengue infection.
methodsHerein, we employed a dengue virus serotype 2 (DV-2)-infected mouse model and Neonatal Thymic Organ Culture (NTOC) to study the impact of DV-2 infection on thymic function. Further, the contribution of infiltrating immune cells, especially myeloid cells, and reactive oxygen species (ROS) in the thymus on DV-2-induced thymic atrophy was studied by depleting Gr-1 + myeloid cells and quenching ROS in mice.
resultsWe have demonstrated that DV-2 infection caused a massive thymic atrophy, dominated by a loss of CD4
conclusionsThus, our study confirms that thymic atrophy does not depend on viremia level but on the interaction between immune cells and the virus, highlighting the contribution of infiltrating myeloid cells and, thus, ROS in DV-2-associated thymic atrophy.
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