Transcriptomics

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TCR signal strength controls thymic differentiation of discrete proinflammatory γδT cell subsetsistinct TCR signal strength requirements in the thymus


ABSTRACT: The murine thymus produces discrete γδ T cell subsets making either IFN-γ or IL-17, but the role of the TCR in this developmental process remains controversial. Here we generated a non-transgenic and polyclonal model of reduced TCR expression and signal strength selectively on γδ T cells. Mice haploinsufficient for both CD3γ and CD3δ (CD3DH) showed normal αβ thymocyte subsets but specific defects in γδ T cell development, namely impaired differentiation of IL-17-producing embryonic Vγ6+ (but not adult Vγ4+) γδ T cells and a marked depletion of IFN-γ-producing CD122+ NK1.1+ (Vγ1-biased) γδ T cells throughout life. As result, adult CD3DH mice showed defective peripheral IFN-γ responses and were resistant to experimental cerebral malaria. Thus, strong TCR signaling is required within specific developmental windows with distinct Vγ usage and differential cytokine production by effector γδ T cell subsets.

ORGANISM(S): Mus musculus

PROVIDER: GSE71637 | GEO | 2016/03/29

SECONDARY ACCESSION(S): PRJNA291693

REPOSITORIES: GEO

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