Local synthesis of dynein cofactors matches retrograde transport to acutely changing demands

Nat Commun. 2016 Dec 21:7:13865. doi: 10.1038/ncomms13865.

Abstract

Cytoplasmic dynein mediates retrograde transport in axons, but it is unknown how its transport characteristics are regulated to meet acutely changing demands. We find that stimulus-induced retrograde transport of different cargos requires the local synthesis of different dynein cofactors. Nerve growth factor (NGF)-induced transport of large vesicles requires local synthesis of Lis1, while smaller signalling endosomes require both Lis1 and p150Glued. Lis1 synthesis is also triggered by NGF withdrawal and required for the transport of a death signal. Association of Lis1 transcripts with the microtubule plus-end tracking protein APC is required for their translation in response to NGF stimulation but not for their axonal recruitment and translation upon NGF withdrawal. These studies reveal a critical role for local synthesis of dynein cofactors for the transport of specific cargos and identify association with RNA-binding proteins as a mechanism to establish functionally distinct pools of a single transcript species in axons.

Publication types

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

MeSH terms

  • Animals
  • Axonal Transport / drug effects
  • Base Sequence
  • Cells, Cultured
  • Dynactin Complex / genetics
  • Dynactin Complex / metabolism*
  • Dyneins / metabolism*
  • Female
  • Ganglia, Spinal / cytology
  • Ganglia, Spinal / embryology
  • Gene Expression / drug effects
  • Male
  • Nerve Growth Factor / pharmacology
  • Nerve Tissue Proteins / genetics
  • Nerve Tissue Proteins / metabolism*
  • Neurons / metabolism*
  • RNA Interference
  • Rats, Sprague-Dawley

Substances

  • Dynactin Complex
  • Nerve Tissue Proteins
  • Pafah1b1 protein, rat
  • Nerve Growth Factor
  • Dyneins