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Mycopathologia
2018 Oct 01;1835:739-749. doi: 10.1007/s11046-018-0276-3.
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Notch Signaling is Required for Dendritic Cell Maturation and T Cell Expansion in Paracoccidioidomycosis.
Jannuzzi GP
,
de Almeida JRF
,
Dos Santos SS
,
de Almeida SR
,
Ferreira KS
.
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The Notch signaling pathway participates in several cellular functional aspects. This signaling has an important role in targeting both DC maturation and DC-mediated T cell responses. Thus, it is essential to investigate the influence of this signaling pathway in the role played by DCs in the pathogenesis of experimental paracoccidioidomycosis. This disease is a granulomatous and systemic mycosis that mainly affects lung tissue and can spread to any other organ and system. In this study, we demonstrated that bone marrow-derived DCs infected with yeasts from Paracoccidioides brasiliensis strain 18 performed efficiently their maturation after the activation of Notch signaling, with an increase in CD80, CD86, CCR7, and CD40 expression and the release of cytokines such as IL-6 and TNF-α. We observed that the inhibition of the γ-secretase DAPT impaired the proliferation of T cells induced by DC stimulation. In conclusion, our data suggest that Notch signaling contributes effectively to the maturation of DCs and the DC-mediated activation of the T cell response in P. brasiliensis infections.
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