Journal Article

Evidence for convergent evolution of SINE-directed Staufen-mediated mRNA decay

Ares, Manuel, Miyoshi, Keita, Siomi, Mikiko C., Maquat, Lynne E., Shiue, Lily, Katzman, Sol, Lucas, Bronwyn A., Lavi, Eitan, Cho, Hana, Carmel, Liran

2018

Overview

Primate-specific Alu short interspersed elements (SINEs) as well as rodent-specific B and ID (B/ID) SINEs can promote Staufen-mediated decay (SMD)when present inmRNA 3′-untranslated regions (3′-UTRs). The transposable nature of SINEs, their presence in long noncoding RNAs, their interactions with Staufen, and their rapid divergence in different evolutionary lineages suggest they could have generated substantial modification of posttranscriptional gene-control networks during mammalian evolution. Some of the variation in SMD regulation produced by SINE insertion might have had a similar regulatory effect in separate mammalian lineages, leading to parallel evolution of the Staufen network by independent expansion of lineage-specific SINEs. To explore this possibility, we searched for orthologous gene pairs, each carrying a species-specific 3′-UTR SINE and each regulated by SMD, by measuring changes in mRNA abundance after individual depletion of two SMD factors, Staufen1 (STAU1) and UPF1, in both human and mouse myoblasts. We identified and confirmed orthologous gene pairs with 3′-UTR SINEs that independently function in SMD control of myoblast metabolism. Expanding to other species, we demonstrated that SINE-directed SMD likely emerged in both primate and rodent lineages >20–25 million years ago. Our work reveals amechanism for the convergent evolution of posttranscriptional gene regulatory networks in mammals by species-specific SINE transposition and SMD.

• Publisher: National Academy of Sciences
• Subject: 3' Untranslated Regions / Animals / AT Rich Sequence / Biochemistry / Biological Sciences / Convergence / Decay / Evolution / Evolution, Molecular / Gene expression / Gene regulation / Gene sequencing / Genomes / Humans / Metabolism / Mice / mRNA turnover / Myoblasts / Post-transcription / Protein-Serine-Threonine Kinases - genetics / Protein-Serine-Threonine Kinases - metabolism / Ribonucleic acid / RNA / RNA Stability - genetics / RNA, Messenger - genetics / RNA, Messenger - metabolism / RNA-Binding Proteins - genetics / RNA-Binding Proteins - metabolism / Rodents / Short Interspersed Nucleotide Elements / Transcription factors