Calcium signalling in and around the nuclear envelope

Gerasimenko, Oleg Vsevolodovich ORCID: https://orcid.org/0000-0003-2573-8258, Maruyama, Y., Tepikin, Alexei, Petersen, Ole Holger ORCID: https://orcid.org/0000-0002-6998-0380 and Gerasimenko, Julia Vladimirovna ORCID: https://orcid.org/0000-0002-2262-2543 2003. Calcium signalling in and around the nuclear envelope. Biochemical Society Transactions 31 (1) , pp. 76-78.

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Abstract

We have compared calcium mobilization by Ins(1,4,5) P(3)(IP(3)), cADP-ribose (cADPR) and nicotinic acid-adenosine dinucleotide phosphate (NAADP) from the envelope of isolated nuclei with the calcium signalling in intact isolated pancreatic acinar cells. Ca(2+) uptake and release were studied with calcium-sensitive fluorescent probes. In the present study, we have shown that all calcium messengers induce Ca(2+) release from the nuclear envelope. Pre-treatment of nuclei with thapsigargin completely abolished the responses to the calcium messengers, indicating that Ca(2+) stores in isolated nuclei are thapsigargin-sensitive. Using different pharmacological tools, we show that Ca(2+) release from pancreatic nuclei is unlikely to occur from stores other than those with endoplasmic reticulum characteristics. We conclude that all three calcium messengers can release Ca(2+) from pancreatic acinar nuclear stores, as previously shown for IP(3) and cADPR. It would appear that NAADP releases Ca(2+) from the same IP(3)- and cADPR-sensitive stores with endoplasmic reticulum characteristics.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences Systems Immunity Research Institute (SIURI)
Subjects:	Q Science > QR Microbiology
Publisher:	Portland Press
ISSN:	0300-5127
Last Modified:	28 Oct 2022 08:32
URI:	https://orca.cardiff.ac.uk/id/eprint/71168

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