Tissue distribution of P2X4 receptors studied with an ectodomain antibody

被引:69
作者
Bo, XN
Kim, M
Nori, SL
Schoepfer, R
Burnstock, G
North, RA
机构
[1] Univ Cattolica Sacro Cuore, Dept Anat & Cell Biol, I-00168 Rome, Italy
[2] UCL, Wellcome Lab Mol Pharmacol, London WC1E 6BT, England
[3] Univ Sheffield, Dept Mol Physiol, Sheffield S10 2TN, S Yorkshire, England
[4] Royal Free & Univ Coll Med Sch, Auton Neurosci Inst, London NW3 2PF, England
基金
英国惠康基金;
关键词
P2X(4) receptor; purinoceptor; ATP; immunoprecipitation; immunohistochemistry; rat (Wistar);
D O I
10.1007/s00441-003-0758-5
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
A monoclonal antibody was developed to the extracellular domain of the rat P2X(4) receptor. The antibody was highly selective among all rat P2X receptor subunits, and recognised only the oligomeric, non-denatured form of the P2X(4) receptor. Immunohistochemistry showed an extensive pattern of distribution throughout the central and peripheral nervous systems, the epithelia of ducted glands and airways, smooth muscle of bladder, gastrointestinal tract, uterus, and arteries, uterine endometrium and fat cells. The protein was identified by Western blotting in membrane extracts of these tissues, and the ectodomain antibody immunoprecipitated a protein that was recognised with a P2X(4) receptor C terminus antibody. The findings indicate that the P2X(4) receptor subunit has a very extensive distribution among mammalian tissues, and this suggests possible new functional roles.
引用
收藏
页码:159 / 165
页数:7
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