期刊
MOLECULAR PHARMACOLOGY
卷 63, 期 4, 页码 777-783出版社
AMER SOC PHARMACOLOGY EXPERIMENTAL THERAPEUTICS
DOI: 10.1124/mol.63.4.777
关键词
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The P2Y(4) receptor is responsive to UTP in human and to ATP and UTP in rodents. With the aim of identifying its pharmacotherapeutic interest, we generated P2Y(4)-null mice by a classic gene targeting method. The proportion of genotypes was consistent with X-linked Mendelian transmission. Gene inactivation was checked by the complete disappearance of P2Y(4) receptor mRNA from liver, stomach, and intestine. The P2Y(4)-null mice had a grossly normal behavior, growth, and reproduction. Chloride secretion by the jejunal epithelium was assessed in Ussing chambers by the measurement of the short circuit current in the presence of phlorizin. We show here that the UTP- and ATP-induced chloride secretory responses observed in wild-type mice are abolished in P2Y(4)-null mice. This is the first clearcut demonstration of a biological role of the P2Y(4) receptor.
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