Electron tomography and immunonanogold electron microscopy for investigating intracellular trafficking and secretion in human eosinophils

J Cell Mol Med. 2008 Aug;12(4):1416-9. doi: 10.1111/j.1582-4934.2008.00346.x. Epub 2008 Apr 9.


Electron tomography (ET) has increasingly been used to understand the complexity of membrane systems and protein-trafficking events. By ET and immunonanogold electron microscopy, we recently defined a route for vesicular transport and release of granule-stored products from within activated human eosinophils, cells specialized in the secretion of numerous cytokines and other proteins during inflammatory responses. Here, we highlight these techniques as important tools to unveil a distinct eosinophil vesicular system and secretory pathway.

Publication types

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

MeSH terms

  • Eosinophils / metabolism*
  • Eosinophils / ultrastructure*
  • Humans
  • Immunohistochemistry
  • Intracellular Space / metabolism*
  • Intracellular Space / ultrastructure*
  • Microscopy, Electron*
  • Protein Transport
  • Secretory Vesicles / ultrastructure
  • Tomography*