title: Presence of VIP receptors in a human pancreatic adenocarcinoma cell line. Modulation of the cAMP response during cell proliferation.
abstract: It is known that the human exocrine pancreas responds to secretin stimulation more than does VIP, a structurally related peptide. We looked for the receptors for those polypeptides in a human pancreatic cancer cell line grown in culture and in nude mice. By analysing the cAMP responses and the 125I-VIP binding we found VIP receptors with a KD of 1.5 10(-9) M. Secretin stimulates the adenylate cyclase through the VIP receptor sites with a KD of 1.7. 10(-6) M. We noted also that during cell proliferation in culture there was about a 5 fold increase of the cAMP response to VIP.
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism*; D000818:Animals; D002455:Cell Division; D002460:Cell Line; D000242:Cyclic AMP / Q000378:metabolism*; D006801:Humans; D051379:Mice; D008819:Mice, Nude; D010190:Pancreatic Neoplasms / Q000378:metabolism*; D011956:Receptors, Cell Surface / Q000302:isolation & purification*; D018005:Receptors, Vasoactive Intestinal Peptide; D012633:Secretin / Q000494:pharmacology; D014660:Vasoactive Intestinal Peptide / Q000494:pharmacology
chemical_list: D011956:Receptors, Cell Surface; D018005:Receptors, Vasoactive Intestinal Peptide; D012633:Secretin; D014660:Vasoactive Intestinal Peptide; D000242:Cyclic AMP