期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 377, 期 1, 页码 321-325出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2008.10.004
关键词
Bone marrow-derived mast cells; Mucosal mast cells; Degranulation; Nicotinic acetylcholine receptors
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan [18590507]
- Smoking Research Foundation
- Grants-in-Aid for Scientific Research [18590507] Funding Source: KAKEN
The autonomic nervous system is known to mediate mast cell activation. We investigated expression of nicotinic acetylcholine receptors (nAChRS) ill mucosal-type mast cells and their contribution to the regulation of mast cell activation. Expression of mRNA of nAChR alpha 4, alpha 7, and beta 2 subunits were detected in specially differentiated mucosal-type murine bone marrow-derived mast cells (mBMMCs). Pretreatment with non-specific nAChRs agonists, acetylcholine, nicotine and epibatidine and a specific alpha 7 subunit agonist GTS-21 significantly inhibited antigen-induced degranulation of mBMMCs in a dose-dependent manner and GTS-21-induced inhibition was significantly blocked by alpha 7 subunit antagonist, alpha-bungarotoxin. Furthermore. confocal microscopy also demonstrated surface binding of alpha-bungarotoxin on mBMMCs. Our findings indicate that mucosal mast cell activation may be negatively regulated mainly through nAChR 17 subunit, suggesting that nAChRs are involved in neuronal-mucosal mast cell interactions. (C) 2008 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据