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Biochim Biophys Acta. 2001 Oct 31;1521(1-3):107-19.

Expression pattern of human P2Y receptor subtypes: a quantitative reverse transcription-polymerase chain reaction study.

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  • 1Neurobiology Programme, The Babraham Institute, Cambridege, UK.


The diverse biological actions of extracellular nucleotides in tissues and cells are mediated by two distinct classes of P2 receptor, P2X and P2Y. The G protein-coupled P2Y receptors comprise at least six mammalian subtypes (P2Y(1,2,4,6,11,12)), all of which have been cloned from human tissues, as well as other species. The P2Y receptor subtypes differ in their pharmacological selectivity for various adenosine and uridine nucleotides, which overlap in some cases. Data concerning the mRNA expression patterns of five P2Y receptors (P2Y(1,2,4,6,11)) in different human tissues and cells are currently quite limited, while P2Y mRNA distribution in the human brain has not previously been studied. In this study, we have addressed this deficiency in receptor expression data by using a quantitative reverse transcription-polymerase chain reaction approach to measure the precise mRNA expression pattern of each P2Y receptor subtype in a number of human peripheral tissues and brain regions, from multiple individuals, as well as numerous human cell lines and primary cells. All five P2Y receptors exhibited widespread yet subtype-selective mRNA expression profiles throughout the human tissues, brain regions and cells used. Our extensive expression data indicate the many potentially important roles of P2Y receptors throughout the human body, and will help in elucidating the physiological function of each receptor subtype in a wide variety of human systems.

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