ArticleThe Biochemical journal1994
Inhibition of adenylate cyclase activity by galanin in rat insulinoma cells is mediated by the G-protein Gi3.
Article in The Biochemical journal, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed, 27 citations in OpenAlex.
- The Galaninergic System: A Target for Cancer Treatment.Cancers · 2022Review
- Go2 G protein mediates galanin inhibitory effects on insulin release from pancreatic β cells.Proceedings of the National Academy of Sciences of the United States of America · 2012Article
- Masked excitatory action of noradrenaline on rat islet beta-cells via activation of phospholipase C.Pflugers Archiv : European journal of physiology · 2003Article
- Galanin--a neuropeptide with inhibitory actions.Cellular and molecular neurobiology · 1995Review
- Direct control of a large conductance K(+)-selective channel by G-proteins in adrenal chromaffin granule membranes.The Journal of membrane biology · 1995Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Galanin inhibits adenylate cyclase activity and insulin secretion and modulates ion channels in pancreatic beta-cells through pertussis-toxin-sensitive G-protein(s). Antibodies directed against the C-terminal region of specific G-protein alpha-subunits were used to determine which G-protein(s) couple galanin receptors to inhibition of adenylate cyclase in the rat insulinoma cell line RINm5F. Preincubation of membranes with EC antibody (anti-alpha i3) decreased the inhibition of forskolin-stimulated adenylate cyclase activity by galanin (100 nM) by 45% compared with control IgG (P < 0.05) whereas preincubation with AS (anti-alpha i1, alpha i2) or GO (anti-alpha o) antibodies had no significant effect. To confirm these results, RINm5F cells were exposed intermittently over a 4-day period to phosphorothioate oligodeoxynucleotides that were either sense or antisense to alpha i1, alpha i2, alpha i3 or alpha o. Oligodeoxynucleotides antisense to alpha i2, alpha i3 and alpha o specifically decreased the levels of the targeted alpha-subunit in membranes. alpha i1 was undetectable in these cells. Inhibition of adenylate cyclase activity by galanin was largely abolished in membranes from cells exposed to the oligodeoxynucleotide antisense to alpha i3, whereas all other oligodeoxynucleotides had no significant effect on this pathway. Indirect immunofluorescence and immunoblotting of specific membrane fractions with EC antibody show significant localization of alpha i3 to intracellular membrane compartments. These results suggest that Gi3 is the G protein that couples galanin receptors to inhibition of adenylate cyclase activity in RINm5F cells.
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