Impact of scaffolding protein TNRC6 paralogs on gene expression and splicing

SAMANTHA T. JOHNSON, YONGJUN CHU, JING LIU, DAVID R. COREY

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

TNRC6 is a scaffolding protein that bridges interactions between small RNAs, argonaute (AGO) protein, and effector proteins to control gene expression. There are three paralogs in mammalian cells, TNRC6A, TNRC6B, and TNRC6C. These paralogs have ∼40% amino acid sequence identity and the extent of their unique or redundant functions is unclear. Here, we use knockout cell lines, enhanced crosslinking immunoprecipitation (eCLIP), and high-throughput RNA sequencing (RNA-seq) to explore the roles of TNRC6 paralogs in RNA-mediated control of gene expression. We find that the paralogs are largely functionally redundant and changes in levels of gene expression are well-correlated with those observed in AGO knockout cell lines. Splicing changes observed in AGO knockout cell lines are also observed in TNRC6 knockout cells. These data further define the roles of the TNRC6 isoforms as part of the RNA interference (RNAi) machinery.

Original languageEnglish (US)
Pages (from-to)1004-1016
Number of pages13
JournalRNA
Volume27
Issue number9
DOIs
StatePublished - Sep 2021

Keywords

  • Alternative splicing
  • Argonaute
  • GW182
  • RNA interference
  • RNA sequencing
  • TNRC6

ASJC Scopus subject areas

  • Molecular Biology

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