| Project/Area Number |
21390301
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
膠原病・アレルギー・感染症内科学
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| Research Institution | Hyogo Medical University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
NAKANISHI Kenji 兵庫医科大学, 医学部, 教授 (60172350)
YASUDA Koubun 兵庫医科大学, 医学部, 助教 (50333539)
NAKAHIRA Masakiyo 兵庫医科大学, 医学部, 助教 (60454758)
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| Project Period (FY) |
2009 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2011: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2010: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2009: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Keywords | 好塩基球 / 抗原提示細胞 / Th2細胞 / アレルゲン / IgE抗体 / IL-4 / Th2細麺胞 |
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| Research Abstract |
Basophils express major histocompatibility complex class II, CD80, CD86 and produce interleukin 4(IL-4) under various conditions. Basophils, when incubated with IL-3 and antigen or antigen. IgE complexes, internalized, processed and presented antigen as peptide-MHC class II complexes and produced IL-4.Intravenous administration of ovalbumin(OVA)-pulsed basophils into naive mice preferentially induced the development of naive OVA-specific CD4^+T cells into T_H2 cells. Such immunized mice, when challenged by iv administration of OVA, promptly produced OVA-specific IgG1 and IgE. Finally, iv administration of IgE complexes rapidly induced T_H2 cells only in the presence of endogenous basophils, suggesting that basophils are potent antigen-presenting cells that preferentially augment T_H2-IgE responses by capturing IgE complex.
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