alexa TNF iNOS-producing dendritic cells mediate innate immune defense against bacterial infection.
Dermatology

Dermatology

Journal of Clinical & Experimental Dermatology Research

Author(s): Serbina NV, SalazarMather TP, Biron CA, Kuziel WA, Pamer EG

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Abstract Dendritic cells (DCs) present microbial antigens to T cells and provide inflammatory signals that modulate T cell differentiation. While the role of DCs in adaptive immunity is well established, their involvement in innate immune defenses is less well defined. We have identified a TNF/iNOS-producing (Tip)-DC subset in spleens of Listeria monocytogenes-infected mice that is absent from CCR2-deficient mice. The absence of Tip-DCs results in profound TNF and iNOS deficiencies and an inability to clear primary bacterial infection. CD8 and CD4 T cell responses to L. monocytogenes antigens are preserved in CCR2-deficient mice, indicating that Tip-DCs are not essential for T cell priming. Tip-DCs, as the predominant source of TNF and iNOS during L. monocytogenes infection, orchestrate and mediate innate immune defense against this intracellular bacterial pathogen.
This article was published in Immunity and referenced in Journal of Clinical & Experimental Dermatology Research

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