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. 2023 Oct 20;14:6639. doi: 10.1038/s41467-023-42428-7

Fig. 8. Proposed model for the role of Zeb1 in homeostasis and function of cDC1.

Fig. 8

Zeb1 deficiency in dendritic cells leads to a selective reduction of splenic cDC1, associated with excessive cell death, rendering mice more resistant to Listeria infection. Additionally, cDC1 from other sources of Zeb1-deficient mice display impaired cross-presentation of exogenous antigens, compromising antitumor CD8+ T cell responses. Mechanistically, Zeb1 facilitates the production of phagosomal reactive oxygen species (ROS) by repressing the expression of microRNA-96/182 that targeted Cybb mRNA of NADPH oxidase Nox2. Consequently, loss of Zeb1 in cDC1 diminishes phagosomal ROS and subsequent phagosomal membrane rupture that allows antigen export to the cytosol.