Distinct and shared functions of ALS-associated proteins TDP-43, FUS and TAF15 revealed by multisystem analyses

Nat Commun. 2016 Jul 5:7:12143. doi: 10.1038/ncomms12143.

Abstract

The RNA-binding protein (RBP) TAF15 is implicated in amyotrophic lateral sclerosis (ALS). To compare TAF15 function to that of two ALS-associated RBPs, FUS and TDP-43, we integrate CLIP-seq and RNA Bind-N-Seq technologies, and show that TAF15 binds to ∼4,900 RNAs enriched for GGUA motifs in adult mouse brains. TAF15 and FUS exhibit similar binding patterns in introns, are enriched in 3' untranslated regions and alter genes distinct from TDP-43. However, unlike FUS and TDP-43, TAF15 has a minimal role in alternative splicing. In human neural progenitors, TAF15 and FUS affect turnover of their RNA targets. In human stem cell-derived motor neurons, the RNA profile associated with concomitant loss of both TAF15 and FUS resembles that observed in the presence of the ALS-associated mutation FUS R521G, but contrasts with late-stage sporadic ALS patients. Taken together, our findings reveal convergent and divergent roles for FUS, TAF15 and TDP-43 in RNA metabolism.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • 3' Untranslated Regions / genetics
  • Alternative Splicing / genetics*
  • Amyotrophic Lateral Sclerosis / genetics*
  • Animals
  • Computational Biology / methods
  • DNA-Binding Proteins / genetics*
  • DNA-Binding Proteins / metabolism
  • Disease Models, Animal
  • Female
  • Fibroblasts
  • Gene Knockdown Techniques
  • High-Throughput Nucleotide Sequencing / methods
  • Humans
  • Induced Pluripotent Stem Cells
  • Introns / genetics
  • Mice
  • Mice, Inbred C57BL
  • Motor Neurons / metabolism
  • Mutation
  • Oligonucleotides, Antisense / administration & dosage
  • Oligonucleotides, Antisense / genetics
  • Primary Cell Culture
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism
  • RNA, Small Interfering / metabolism
  • RNA-Binding Protein FUS / genetics*
  • RNA-Binding Protein FUS / metabolism
  • Sequence Analysis, RNA / methods
  • TATA-Binding Protein Associated Factors / genetics*
  • TATA-Binding Protein Associated Factors / metabolism

Substances

  • 3' Untranslated Regions
  • DNA-Binding Proteins
  • FUS protein, human
  • FUS protein, mouse
  • Oligonucleotides, Antisense
  • RNA, Messenger
  • RNA, Small Interfering
  • RNA-Binding Protein FUS
  • TAF15 protein, human
  • TAF15 protein, mouse
  • TARDBP protein, human
  • TATA-Binding Protein Associated Factors
  • TDP-43 protein, mouse