Self-propelling vesicles define glycolysis as the minimal energy machinery for neuronal transport

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • María Victoria Hinckelmann - (Author)
  • Amandine Virlogeux - (Author)
  • Christian Niehage - , Chair of Proteomics (Author)
  • Christel Poujol - (Author)
  • Daniel Choquet - (Author)
  • Bernard Hoflack - , Chair of Proteomics (Author)
  • Diana Zala - (Author)
  • Frédéric Saudou - (Author)

Abstract

The glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH) facilitates fast axonal transport in neurons. However, given that GAPDH does not produce ATP, it is unclear whether glycolysis per se is sufficient to propel vesicles. Although many proteins regulating transport have been identified, the molecular composition of transported vesicles in neurons has yet to be fully elucidated. Here we selectively enrich motile vesicles and perform quantitative proteomic analysis. In addition to the expected molecular motors and vesicular proteins, we find an enrichment of all the glycolytic enzymes. Using biochemical approaches and super-resolution microscopy, we observe that most glycolytic enzymes are selectively associated with vesicles and facilitate transport of vesicles in neurons. Finally, we provide evidence that mouse brain vesicles produce ATP from ADP and glucose, and display movement in a reconstituted in vitro transport assay of native vesicles. We conclude that transport of vesicles along microtubules can be autonomous.

Details

Original languageEnglish
Article number13233
JournalNature communications
Volume7
Publication statusPublished - 24 Oct 2016
Peer-reviewedYes

External IDs

PubMed 27775035