Transcriptomics

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ZFP36 RNA binding proteins restrain T-cell activation kinetics and anti-viral immunity [RNA-seq]


ABSTRACT: Dynamic post-transcriptional control of RNA expression by RNA-binding proteins (RBPs) is critical during immune response. ZFP36 RBPs are prominent inflammatory regulators linked to autoimmunity and cancer, but functions in adaptive immunity are less clear. We used HITS-CLIP to define ZFP36 targets in T-cells, which confirmed regulation of cytokine expression and revealed unanticipated actions in regulating T-cell activation and proliferation. Transcriptome and ribosome profiling showed that ZFP36 represses mRNA target abundance and translation, most robustly through a novel class of AU-rich sites in coding sequence. Functional studies revealed that ZFP36 regulates early T-cell activation kinetics by attenuating activation marker expression, limiting T-cell expansion, and promoting apoptosis in a cell autonomous manner. Strikingly, loss of ZFP36 in vivo accelerated T-cell responses to acute viral infection, and enhanced anti-viral immunity. These findings uncover a critical role for ZFP36 RBPs in restraining T-cell expansion and effector functions, and suggest ZFP36 inhibition as a novel strategy to enhance immune-based therapies.

ORGANISM(S): Mus musculus

PROVIDER: GSE96050 | GEO | 2018/03/01

REPOSITORIES: GEO

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