Protocols for electrophysiological recordings and electron microscopy at C. elegans neuromuscular junction

STAR Protoc. 2021 Aug 13;2(3):100749. doi: 10.1016/j.xpro.2021.100749. eCollection 2021 Sep 17.

Abstract

Release of neurotransmitters by synaptic vesicle exocytosis at presynaptic terminals is critical for neuronal communication within the nervous system. Electrophysiology and electron microscopy are powerful and complementary approaches used to evaluate the function of synaptic proteins in synaptic transmission. Here, we provide a protocol detailing the use of these two approaches at C. elegans neuromuscular junctions, including steps for worm picking and dissection, in vivo electrophysiological recording, and sample preparation for electron microscopy, followed by imaging and analysis. For complete details on the use and execution of this protocol, please refer to Liu et al. (2021) and Li et al. (2021).

Keywords: Microscopy; Model Organisms; Neuroscience.

Publication types

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

MeSH terms

  • Animals
  • Caenorhabditis elegans / genetics
  • Caenorhabditis elegans / physiology
  • Caenorhabditis elegans Proteins / genetics
  • Electrophysiological Phenomena / physiology
  • Microscopy, Electron / methods*
  • Neuromuscular Junction / diagnostic imaging*
  • Neuromuscular Junction / metabolism
  • Neuromuscular Junction / physiology*
  • Neurons / metabolism
  • Presynaptic Terminals / physiology
  • Synaptic Transmission / physiology

Substances

  • Caenorhabditis elegans Proteins