Neurochondrin interacts with the SMN protein suggesting a novel mechanism for Spinal Muscular Atrophy pathology

Luke W. Thompson, Kim D. Morrison, Sally L. Shirran, Ewout J. N. Groen, Tom H. Gillingwater, Catherine H. Botting, Judith E. Sleeman

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
11 Downloads (Pure)

Abstract

Spinal Muscular Atrophy (SMA) is an inherited neurodegenerative condition caused by reduction in functional Survival Motor Neurones Protein (SMN). SMN has been implicated in transport of mRNA in neural cells for local translation. We previously identified microtubule-dependant mobile vesicles rich in SMN and the splicing factor SmB, a member of the Sm protein family, in neural cells. By comparing the proteome of SmB to that of SmN, a neural-specific Sm protein, we now show that the essential neural protein neurochondrin (NCDN) interacts with Sm proteins and SMN in the context of mobile vesicles in neurites. NCDN has roles in protein localisation in neural cells, and in maintenance of cell polarity. NCDN is required for the correct localisation of SMN, suggesting they may both be required for formation and transport of trafficking vesicles. NCDN provides a potential therapeutic target for SMA together with, or in place of, those targeting SMN expression.
Original languageEnglish
Article numberjcs211482
Number of pages18
JournalJournal of Cell Science
Volume131
Issue number8
DOIs
Publication statusPublished - 17 Apr 2018

Keywords

  • Spinal Muscular Atrophy
  • Neurochondrin
  • SMN
  • Sm proteins
  • snRNPs

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