Protein tyrosine phosphatases in mast cell signaling.
For a time, mast cells were viewed as simple granulocytic effector cells that mediate allergic symptoms. More recent discoveries show that mast cells can also function as potent pro- and anti-inflammatory immune regulators in a plethora of human diseases. Much of the current knowledge about mast cell functions comes from studies on rodent models. The membrane receptors for antigen/IgE and growth factors are the core initiators of signaling cascades that trigger various mast cell responses. Yet, the regulation and multifunctionality of key receptor-proximal protein tyrosine phosphorylation events are still not well understood. The roles of the members of the protein tyrosine phosphatase superfamily of enzymes in regulating mast cell development, survival, and immune activation will be reviewed in this chapter.
Department of Medicine, Child and Family Research Institute, University of British Columbia, 950 West 28th Avenue, Vancouver, BC, Canada, V5Z 4H4.
Alexander
A
Geldman
Catherine J
CJ
Pallen
D000818:Animals; D015971:Gene Expression Regulation, Enzymologic; D006801:Humans; D042541:Intracellular Space / Q000201:enzymology; D008407:Mast Cells / Q000166:cytology* / Q000201:enzymology; D017027:Protein Tyrosine Phosphatases / Q000737:chemistry / Q000378:metabolism*; D015398:Signal Transduction; D018909:src Homology Domains
D017027:Protein Tyrosine Phosphatases