The Mechanisms of Exocytosis in Mast Cells

  • Ulrich Blank
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 716)


Upon activation through high affinity IgE receptors (FcεRI), mast cells (MCs) can release up to 100% of their content of preformed mediators stored in cytoplasmic secretory granules by compound exocytosis. This causes Type I immediate hypersensitivity reactions and, in the case of inappropriate activation by allergens, the symptoms of allergy. Recent work has uncovered a central role of SNARE (Soluble N-ethylmaleimide-Sensitive Factor (NSF) Attachment Protein (SNAP) Receptors) proteins in regulating the numerous membrane fusion events during exocytosis. This has defined a series of new molecular actors in MC exocytosis that participate in the regulation of membrane fusion and the connection of the fusion machinery with early signaling events. The purpose of this chapter is to describe these proteins and provide a brief overview on their mechanism of action.


Mast Cell Lipid Raft Membrane Fusion Hemopha Gocytic Lymphohistiocytosis Mast Cell Secretion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Landes Bioscience and Springer Science+Business Media 2011

Authors and Affiliations

  • Ulrich Blank
    • 1
    • 2
  1. 1.Inserm U699ParisFrance
  2. 2.Faculté de Médecine Paris Diderot—Site Xavier BichatUniversité Paris 7ParisFrance

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