Peripheral Nervous System Genes Expressed in Central Neurons Induce Growth on Inhibitory Substrates

William J. Buchser*, Robin P. Smith, Jose R. Pardinas, Candace L. Haddox, Thomas Hutson, Lawrence Moon, Stanley R. Hoffman, John L. Bixby, Vance P. Lemmon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Trauma to the spinal cord and brain can result in irreparable loss of function. This failure of recovery is in part due to inhibition of axon regeneration by myelin and chondroitin sulfate proteoglycans (CSPGs). Peripheral nervous system (PNS) neurons exhibit increased regenerative ability compared to central nervous system neurons, even in the presence of inhibitory environments. Previously, we identified over a thousand genes differentially expressed in PNS neurons relative to CNS neurons. These genes represent intrinsic differences that may account for the PNS's enhanced regenerative ability. Cerebellar neurons were transfected with cDNAs for each of these PNS genes to assess their ability to enhance neurite growth on inhibitory (CSPG) or permissive (laminin) substrates. Using high content analysis, we evaluated the phenotypic profile of each neuron to extract meaningful data for over 1100 genes. Several known growth associated proteins potentiated neurite growth on laminin. Most interestingly, novel genes were identified that promoted neurite growth on CSPGs (GPX3, EIF2B5, RBMX). Bioinformatic approaches also uncovered a number of novel gene families that altered neurite growth of CNS neurons.

Original languageEnglish
Article numbere38101
Number of pages17
JournalPLoS ONE
Volume7
Issue number6
DOIs
Publication statusPublished - 6 Jun 2012

Keywords

  • NEURITE OUTGROWTH
  • PROTEIN-SYNTHESIS
  • CHONDROITIN SULFATE PROTEOGLYCANS
  • SERINE-PROTEASE
  • RETINAL GANGLION-CELLS
  • AXON REGENERATION
  • PC12 CELLS
  • IN-VIVO
  • MOUSE-BRAIN
  • TRANSLATION INITIATION-FACTOR

Fingerprint

Dive into the research topics of 'Peripheral Nervous System Genes Expressed in Central Neurons Induce Growth on Inhibitory Substrates'. Together they form a unique fingerprint.

Cite this