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Differential expression of genes related to purinergic signaling in smooth muscle cells, PDGFRα‐positive cells, and interstitial cells of Cajal in the murine colon

Purinergic signaling provides regulation of colonic motility. Smooth muscle cells (SMC), interstitial cells of Cajal (ICC), and platelet‐derived growth factor receptor α‐positive (PDGFRα+) cells are electrically coupled and form a functional (SIP) syncytium that constitutes the receptive field for motor neurotransmitters in the tunica muscularis. Each cell type in the SIP syncytium has specialized functions in mediating motor neurotransmission. We compared gene transcripts for purinergic receptors and membrane‐bound enzymes for purine degradation expressed by each cell type of the SIP syncytium.