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TENT5 cytoplasmic non-canonical poly(A) polymerases regulate the innate immune response in animals

ABSTRACT: Innate immunity, the first line of host defense against pathogens, is tightly regulated both transcriptionally and post-transcriptionally. Through global transcriptome and proteome analyses in Caenorhabditis elegans, we uncover a modulation of the expression of secreted innate immunity effector proteins by TENT5, one of a recently described family of cytoplasmic poly(A) polymerases. Direct RNA sequencing revealed that TENT-5 polyadenylates mRNAs with signal peptide-encoding sequences, that are translated at the endoplasmic reticulum. Loss of tent-5 function makes worms more susceptible to bacterial infection. Importantly, we demonstrate that the function of TENT-5 in innate immunity is evolutionarily conserved, as its orthologs, TENT5A and TENT5C are induced during macrophage activation and polyadenylate mRNAs, some of which are of genes orthologous to C. elegans TENT-5 targets. In summary, our study reveals cytoplasmic polyadenylation to be a previously unknown component of the post-transcriptional regulation of innate immunity in animals.

ORGANISM(S): Caenorhabditis elegans Mus musculus

PROVIDER: GSE163549 | GEO | 2022/10/01

REPOSITORIES: GEO

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TENT5 cytoplasmic non-canonical poly(A) polymerases regulate the innate immune response in animals

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