Regulation of mast cell survival by IgE

Koichi Asai, Jiro Kitaura, Yuko Kawakami, Noboru Yamagata, Mindy Tsai, David P. Carbone, Fu-Tong Liu, Stephen J. Galli, Toshiaki Kawakami

Research output: Contribution to journalArticlepeer-review

284 Scopus citations


Mast cells play critical roles in hypersensitivity and in defense against certain parasites. We provide evidence that mouse mast cell survival and growth are promoted by monomeric IgE binding to its high-affinity receptor, FcεRI. Monomeric IgE does not promote DNA synthesis but suppresses the apoptosis induced by growth factor deprivation. This antiapoptotic effect occurs in parallel with IgE-induced increases in FcεRI surface expression but requires the continuous presence of IgE. This process does not involve the FasL/Fas death pathway or several Bcl-2 family proteins and induces a distinctly different signal than FcεRI cross-linking. The ability of IgE to enhance mast cell survival and FcεRI expression may contribute to amplified allergic reactions.

Original languageEnglish (US)
Pages (from-to)791-800
Number of pages10
Issue number6
StatePublished - 2001

ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases
  • Immunology


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