Abstract:
:IL-15 induces proliferation, inhibits apoptosis and increases IL-4 production in murine mast cells. There is evidence that these activities are mediated via the uncharacterised receptor, IL-15R-X, rather than the classical three-chain IL-15 receptor. Effects of IL-15 on important aspects of mast cell biology, such as migration and degranulation, are unknown. We report that IL-15 induces migration of murine and human mast cells in a dose-dependent and biphasic manner, with peaks of migration occurring at approximately 10(-15) and approximately 10(-9) M. The potency of the response was similar to that induced by other well-established mast cell chemoattractants. Competition assays performed with murine and human mast cells indicate that both peaks of migration are due to chemotaxis. Pre-treatment of cells with pertussis toxin (PTX), a guanine nucleotide-binding regulatory protein (G-protein) inhibitor, resulted in complete inhibition of murine mast cell migration at approximately 10(-15) M IL-15, and human mast cell migration at approximately 10(-15) and approximately 10(-9) M. This demonstrates that murine and human mast cells express a PTX-sensitive receptor, activated in response to IL-15. Additionally, IL-15 did not induce degranulation in murine mast cells. Locally-produced IL-15 may contribute to mast cell recruitment during inflammatory responses, thereby acting as a linking cytokine between innate and adaptive arms of the immune system.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Jackson NE,Wang HW,Tedla N,McNeil HP,Geczy CL,Collins A,Grimm MC,Hampartzoumian T,Hunt JEdoi
10.1002/eji.200526154keywords:
subject
Has Abstractpub_date
2005-08-01 00:00:00pages
2376-85issue
8eissn
0014-2980issn
1521-4141journal_volume
35pub_type
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1975-05-01 00:00:00
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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更新日期:1979-05-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830210415
更新日期:1991-04-01 00:00:00
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journal_title:European journal of immunology
pub_type: 评论,杂志文章
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更新日期:2011-10-01 00:00:00
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2014-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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