Sphingosine-1-phosphate stimulates cortisol secretion

被引:35
作者
Rábano, M [1 ]
Peña, A [1 ]
Brizuela, L [1 ]
Marino, A [1 ]
Macarulla, JM [1 ]
Trueba, M [1 ]
Gómez-Muñoz, A [1 ]
机构
[1] Univ Basque Country, Fac Sci, Dept Biochem & Mol Biol, Bilbao 48080, Spain
关键词
sphingosine-1-phosphate; ceramide; cortisol secretion; phospholipase D; protein kinase C; adrenal gland;
D O I
10.1016/S0014-5793(02)03882-6
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
We show here for the first time that sphingosine-1-phosphate (Sph-1-P) stimulates cortisol secretion in zona fasciculata cells of bovine adrenal glands. This effect was dependent upon protein kinase C (PKC) and extracellular Ca2+, and was inhibited by pertussis toxin. Sph-1-P activated phospholipase D (PLD) through a pertussis toxin-sensitive mechanism, also involving extracellular Ca2+ and PKC. Primary alcohols, which attenuate formation of phosphatidic acid (the product of PLD), and cell-permeable ceramides, which inhibit PLD, blocked Sph-1-P-induced cortisol secretion. In conclusion, Sph-1-P stimulates cortisol secretion through a mechanism involving Gi/o protein-coupled receptors, extracellular Ca2+, PKC and PLD. (C) 2003 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:101 / 105
页数:5
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