{"title":"毒蕈碱胆碱能受体诱导的pge1刺激的神经母细胞瘤X胶质瘤细胞cAMP积累增强:百日咳毒素预防。","authors":"J M Thomas, B B Hoffman","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Chronic treatment of neuroblastoma X glioma hybrid cells (NG 108-15) with the muscarinic cholinergic agonist carbachol, which acutely inhibits adenylate cyclase, resulted in a 104 +/- 10% increase in PGE1-stimulated cAMP accumulation. Pretreatment of intact cells with pertussis toxin can structurally modify the inhibitory regulatory protein, Gi, by ADP-ribosylation and thus abolish the acute inhibition by carbachol. Pretreatment of the cells with pertussis toxin also resulted in a 27 +/- 8% increase in PGE1-stimulated cAMP accumulation. In the pertussis toxin-treated cells, chronic treatment with carbachol did not further enhance the PGE1 stimulation. These results suggest that functional Gi is required for the development of muscarinic cholinergic-induced enhancement of PGE1-stimulated cAMP accumulation.</p>","PeriodicalId":15406,"journal":{"name":"Journal of cyclic nucleotide and protein phosphorylation research","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Muscarinic cholinergic receptor-induced enhancement of PGE1-stimulated cAMP accumulation in neuroblastoma X glioma cells: prevention by pertussis toxin.\",\"authors\":\"J M Thomas, B B Hoffman\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Chronic treatment of neuroblastoma X glioma hybrid cells (NG 108-15) with the muscarinic cholinergic agonist carbachol, which acutely inhibits adenylate cyclase, resulted in a 104 +/- 10% increase in PGE1-stimulated cAMP accumulation. Pretreatment of intact cells with pertussis toxin can structurally modify the inhibitory regulatory protein, Gi, by ADP-ribosylation and thus abolish the acute inhibition by carbachol. Pretreatment of the cells with pertussis toxin also resulted in a 27 +/- 8% increase in PGE1-stimulated cAMP accumulation. In the pertussis toxin-treated cells, chronic treatment with carbachol did not further enhance the PGE1 stimulation. These results suggest that functional Gi is required for the development of muscarinic cholinergic-induced enhancement of PGE1-stimulated cAMP accumulation.</p>\",\"PeriodicalId\":15406,\"journal\":{\"name\":\"Journal of cyclic nucleotide and protein phosphorylation research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1986-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of cyclic nucleotide and protein phosphorylation research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of cyclic nucleotide and protein phosphorylation research","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Muscarinic cholinergic receptor-induced enhancement of PGE1-stimulated cAMP accumulation in neuroblastoma X glioma cells: prevention by pertussis toxin.
Chronic treatment of neuroblastoma X glioma hybrid cells (NG 108-15) with the muscarinic cholinergic agonist carbachol, which acutely inhibits adenylate cyclase, resulted in a 104 +/- 10% increase in PGE1-stimulated cAMP accumulation. Pretreatment of intact cells with pertussis toxin can structurally modify the inhibitory regulatory protein, Gi, by ADP-ribosylation and thus abolish the acute inhibition by carbachol. Pretreatment of the cells with pertussis toxin also resulted in a 27 +/- 8% increase in PGE1-stimulated cAMP accumulation. In the pertussis toxin-treated cells, chronic treatment with carbachol did not further enhance the PGE1 stimulation. These results suggest that functional Gi is required for the development of muscarinic cholinergic-induced enhancement of PGE1-stimulated cAMP accumulation.
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