Abstract
Nicotinate adenine dinucleotide phosphate (NAADP) was recently identified [Lee and Aarhus (1995) J. Biol. Chem. 270, 2152-2157; Chini, Beers and Dousa (1995) J. Biol. Chem. 270, 3116-3223] as a potent Ca(2+)-releasing agent in sea urchin egg homogenates. NAADP triggered Ca2+ release by a mechanism that was distinct from inositol 1,4,5-trisphosphate (InsP3)- and cyclic ADP-ribose (cADPR)-induced Ca2+ release. When NAADP was microinjected into intact sea urchin eggs it induced a dose-dependent increase in cytoplasmic free Ca2+ which was independent of the extracellular [Ca2+]. The Ca2+ waves elicited by microinjections of NAADP originated at the site of injection and swept across the cytosol. As previously found in sea urchin egg homogenates, NAADP-induced Ca2+ release in intact eggs was not blocked by heparin or by prior desensitization to InsP3 or cADPR. Thio-NADP, a specific inhibitor of the NAADP-induced Ca2+ release in sea urchin homogenates [Chini, Beers and Dousa (1995) J. Biol. Chem. 270, 3116-3223] blocked NAADP (but not InsP3 or cADPR) injection-induced Ca2+ release in intact sea urchin eggs. Finally, fertilization of sea urchin eggs abrogated subsequent NAADP-induced Ca2+ release, suggesting that the NAADP-sensitive Ca2+ pool may participate in the fertilization response. This study demonstrates that NAADP acts as a selective Ca(2+)-releasing agonist in intact cells.
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- Berridge M. J. Inositol trisphosphate and calcium signalling. Nature. 1993 Jan 28;361(6410):315–325. doi: 10.1038/361315a0. [DOI] [PubMed] [Google Scholar]
- Buck W. R., Hoffmann E. E., Rakow T. L., Shen S. S. Synergistic calcium release in the sea urchin egg by ryanodine and cyclic ADP ribose. Dev Biol. 1994 May;163(1):1–10. doi: 10.1006/dbio.1994.1118. [DOI] [PubMed] [Google Scholar]
- Buck W. R., Rakow T. L., Shen S. S. Synergistic release of calcium in sea urchin eggs by caffeine and ryanodine. Exp Cell Res. 1992 Sep;202(1):59–66. doi: 10.1016/0014-4827(92)90404-v. [DOI] [PubMed] [Google Scholar]
- Chini E. N., Beers K. W., Dousa T. P. Nicotinate adenine dinucleotide phosphate (NAADP) triggers a specific calcium release system in sea urchin eggs. J Biol Chem. 1995 Feb 17;270(7):3216–3223. doi: 10.1074/jbc.270.7.3216. [DOI] [PubMed] [Google Scholar]
- Clapham D. E. Calcium signaling. Cell. 1995 Jan 27;80(2):259–268. doi: 10.1016/0092-8674(95)90408-5. [DOI] [PubMed] [Google Scholar]
- Dargie P. J., Agre M. C., Lee H. C. Comparison of Ca2+ mobilizing activities of cyclic ADP-ribose and inositol trisphosphate. Cell Regul. 1990 Feb;1(3):279–290. doi: 10.1091/mbc.1.3.279. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Epel D., Patton C., Wallace R. W., Cheung W. Y. Calmodulin activates NAD kinase of sea urchin eggs: an early event of fertilization. Cell. 1981 Feb;23(2):543–549. doi: 10.1016/0092-8674(81)90150-1. [DOI] [PubMed] [Google Scholar]
- Galione A. Cyclic ADP-ribose, the ADP-ribosyl cyclase pathway and calcium signalling. Mol Cell Endocrinol. 1994 Jan;98(2):125–131. doi: 10.1016/0303-7207(94)90130-9. [DOI] [PubMed] [Google Scholar]
- Galione A. Cyclic ADP-ribose: a new way to control calcium. Science. 1993 Jan 15;259(5093):325–326. doi: 10.1126/science.8380506. [DOI] [PubMed] [Google Scholar]
- Galione A., Lee H. C., Busa W. B. Ca(2+)-induced Ca2+ release in sea urchin egg homogenates: modulation by cyclic ADP-ribose. Science. 1991 Sep 6;253(5024):1143–1146. doi: 10.1126/science.1909457. [DOI] [PubMed] [Google Scholar]
- Galione A., McDougall A., Busa W. B., Willmott N., Gillot I., Whitaker M. Redundant mechanisms of calcium-induced calcium release underlying calcium waves during fertilization of sea urchin eggs. Science. 1993 Jul 16;261(5119):348–352. doi: 10.1126/science.8392748. [DOI] [PubMed] [Google Scholar]
- Hellmich M. R., Strumwasser F. Purification and characterization of a molluscan egg-specific NADase, a second-messenger enzyme. Cell Regul. 1991 Mar;2(3):193–202. doi: 10.1091/mbc.2.3.193. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lee H. C., Aarhus R. A derivative of NADP mobilizes calcium stores insensitive to inositol trisphosphate and cyclic ADP-ribose. J Biol Chem. 1995 Feb 3;270(5):2152–2157. doi: 10.1074/jbc.270.5.2152. [DOI] [PubMed] [Google Scholar]
- Lee H. C., Aarhus R., Walseth T. F. Calcium mobilization by dual receptors during fertilization of sea urchin eggs. Science. 1993 Jul 16;261(5119):352–355. doi: 10.1126/science.8392749. [DOI] [PubMed] [Google Scholar]
- Lee H. C., Walseth T. F., Bratt G. T., Hayes R. N., Clapper D. L. Structural determination of a cyclic metabolite of NAD+ with intracellular Ca2+-mobilizing activity. J Biol Chem. 1989 Jan 25;264(3):1608–1615. [PubMed] [Google Scholar]
- Shen S. S., Buck W. R. Sources of calcium in sea urchin eggs during the fertilization response. Dev Biol. 1993 May;157(1):157–169. doi: 10.1006/dbio.1993.1120. [DOI] [PubMed] [Google Scholar]