Inhibition of protein synthesis alters the subcellular distribution of mRNA in neurons but does not prevent dendritic transport of RNA

Robin Kleiman, Gary Banker, Oswald Steward

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

This study evaluates whether protein synthesis plays a role in targeting RNA molecules to different subcellular domains within neurons. Transport of newly synthesized RNA (labeled with [3H]uridine) was examined in the presence of the protein synthesis inhibitors puromycin and cycloheximide. In situ hybridization was used to determine whether inhibition of protein synthesis altered the subcellular distribution of mRNAs. Transport of recently synthesized RNA was not disrupted after prolonged exposure to either inhibitor. However, inhibition of protein synthesis caused several mRNAs that are normally confined to the cell body to appear in dendrites. The distribution of mRNAs that are normally present in dendrites was unaffected. These findings suggest that protein synthesis is not required to translocate RNA into the dendrites but may play a role in restricting particular mRNAs to the neuronal cell body.

Original languageEnglish (US)
Pages (from-to)11192-11196
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume90
Issue number23
DOIs
StatePublished - Dec 1 1993

ASJC Scopus subject areas

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