Metabolically reprogrammed eosinophils impair T cell immunity and cause chronic skin infection

ABSTRACT: Eosinophils exhibit antimicrobial, cytotoxic and immunoregulatory effects, but our knowledge of their transcriptional and functional heterogeneity is still limited, especially in non-intestinal tissues. Here, we used a mouse model of chronic cutaneous inflammation elicited by the protozoan pathogen Leishmania mexicana to investigate the function and transcriptional dynamics of skin eosinophils. Infection of C57BL/6 mice triggered local and systemic eosinophilia that was driven by type 2 innate lymphoid cells and interleukin-5. Genetic and pharmacological eosinophil depletion led to an enhanced Th1 response, polarization towards M1-like macrophages and resolution of clinical disease, despite an unexpected simultaneous upregulation of IL-4. Single-cell transcriptomics revealed a skin-imprint

SUBMITTER: David Barinberg 

PROVIDER: S-SCDT-10_1038-S44321-026-00392-X | biostudies-other |

REPOSITORIES: biostudies-other