Melatonin synchronizes protein synthesis rhythm in hepatocyte cultures as an agonist of intercellular calcium and protein kinases

Melatonin synchronizes protein synthesis rhythm in hepatocyte cultures as an agonist of... Melatonin in nanomolar concentrations synchronizes protein synthesis in primary cultures of hepatocytes through calcium-dependent activation of protein kinases. The synchronizing effect of melatonin is blocked by the cytoplasmic calcium chelating agent BAPTA-AM (20 μM) as well as by the inhibitor of protein kinases 1-(5-isoquinolinylsulfonyl)-2-methylpiperazine dihydrochloride (40 μM). Thus, protein phosphorylation is the key event in hepatocyte synchronization by melatonin, as we have demonstrated previously for gangliosides and biogenic amines. The antagonist of melatonin receptors luzindole (20 nM) blocks the synchronizing function of melatonin. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Melatonin synchronizes protein synthesis rhythm in hepatocyte cultures as an agonist of intercellular calcium and protein kinases

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2009 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Animal Anatomy / Morphology / Histology; Developmental Biology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1134/S1062360409030084
Publisher site
See Article on Publisher Site

Abstract

Melatonin in nanomolar concentrations synchronizes protein synthesis in primary cultures of hepatocytes through calcium-dependent activation of protein kinases. The synchronizing effect of melatonin is blocked by the cytoplasmic calcium chelating agent BAPTA-AM (20 μM) as well as by the inhibitor of protein kinases 1-(5-isoquinolinylsulfonyl)-2-methylpiperazine dihydrochloride (40 μM). Thus, protein phosphorylation is the key event in hepatocyte synchronization by melatonin, as we have demonstrated previously for gangliosides and biogenic amines. The antagonist of melatonin receptors luzindole (20 nM) blocks the synchronizing function of melatonin.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Jun 6, 2009

References

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