Suppression of CXCR4 expression in mast cells upon IgE-mediated antigen stimulation

Junji Matsuura, Mariko Sakanaka, Norio Sato, Atsushi Ichikawa, Satoshi Tanaka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Objective: Recent studies have demonstrated that a variety of chemokine receptors are expressed in mast cells. We investigated the changes in mRNA expression of CXCRs in murine IL-3-dependent bone marrow-derived mast cells (BMMCs) to clarify how the CXCR expression is regulated in mast cells. Methods: Expression of CXCR mRNA was measured by RNase protection assay. Functional expression of CXCRs was confirmed by monitoring intracellular Ca2+ mobilization. Results: CXCR4 mRNA expression was transiently induced in BMMCs in serum-dependent fashion and was completely suppressed upon IgE-mediated antigen stimulation. In contrast, CXCR5 mRNA expression was induced upon IgE-mediated antigen stimulation. Changes in the intracellular Ca2+ mobilization induced by CXCL12 strongly indicated the functional expression of CXCR4. The decrease in CXCR4 and the increase in CXCR5 mRNA expression was also observed in BMMCs stimulated with thapsigargin, a phorbol ester, and stem cell factor. Conclusion: The mRNA expression of CXCR4 is differentially regulated in BMMCs upon various stimuli including IgE-mediated antigen stimulation.

Original languageEnglish
Pages (from-to)123-127
Number of pages5
JournalInflammation Research
Issue number2
Publication statusPublished - Feb 2010
Externally publishedYes


  • CXCR4
  • CXCR5
  • Chemokine
  • Mast cell
  • SCF

ASJC Scopus subject areas

  • Immunology
  • Pharmacology


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