Retinoic acid specifically activates an oleate‐dependent phospholipase D in the nuclei of LA‐N‐1 neuroblastoma cells

Retinoic acid specifically activates an oleate‐dependent phospholipase D in the nuclei of LA‐N‐1 neuroblastoma cells
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视黄酸特异性激活 LA-N-1 神经母细胞瘤细胞核中的油酸依赖性磷脂酶 D

DOI:
10.1016/s0014-5793(03)00313-2
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发表时间:
2003
期刊:
影响因子:
3.5
通讯作者:
L. Freysz
L. Freysz
中科院分区:
生物学3区
文献类型:
--
作者:
P. Antony;J. Kanfer;L. Freysz

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早期研究表明,用肿瘤启动子 TPA 处理 LA-N-1 细胞会刺激细胞核中 G 蛋白调节的磷脂酶 D (PLD)。现在我们证明视黄酸(一种细胞分化诱导剂)可激活 LA-N-1 细胞中核油酸依赖性 PLD。用视黄酸处理细胞核会诱导磷脂酰胆碱 (PtdCho) 的分解。我们的结果表明,PLD 根据刺激剂的性质受到不同的调节。这些结果强烈表明 LA-N-1 核中存在两种水解 PtdCho 的核 PLD 亚型。
Earlier studies showed that treatment of LA-N-1 cells with TPA, a tumoral promoter, leads to the stimulation of a G protein-regulated phospholipase D (PLD) in the nuclei. Now we demonstrate that retinoic acid, a cellular differentiation inducing agent, activates a nuclear oleate-dependent PLD in LA-N-1 cells. Treatment of the nuclei with retinoic acid induces the breakdown of phosphatidylcholine (PtdCho). Our results indicate that PLD is regulated differentially depending on the nature of the stimulatory agent. These results strongly suggest the existence of two nuclear PLD isoforms in LA-N-1 nuclei that hydrolyze PtdCho.