Alpha-thrombin-induced nuclear sn-1,2-diacylglycerols are derived from phosphatidylcholine hydrolysis in cultured fibroblasts.

Alpha-thrombin-induced nuclear sn-1,2-diacylglycerols are derived from phosphatidylcholine hydrolysis in cultured fibroblasts.
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α-凝血酶诱导的核 sn-1,2-二酰甘油源自培养的成纤维细胞中的磷脂酰胆碱水解。

DOI:
10.1021/bi00168a018
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发表时间:
1994
期刊:
影响因子:
2.9
通讯作者:
Raben,DM
Raben,DM
中科院分区:
生物学3区
文献类型:
--
作者:
Jarpe,MB;Leach,KL;Raben,DM

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摘要:甘油二酯在激动剂诱导的信号转导通路中起重要作用。我们最近已经证明凝血酶诱导细胞核中甘油二酯质量水平的快速增加和细胞核PKC的选择性增加[Leach,KL,Ruff,V.A.,贾普,B.,Fabbro,D.,亚当斯湖D、&拉本,D. M.(1992)J.Biol.Chem.267,21816-21822]。在本报告中,我们通过毛细管气相色谱法检测诱导的甘油二酯和核磷脂的分子种类谱,研究了诱导的核甘油二酯的潜在来源。生成的核甘油二酯的分子种类谱在任何时候都类似于PC的种类谱,而不是PI种类。此外,虽然我们以前的数据表明,分子物种的全细胞磷脂没有改变响应凝血酶,核PE被改变在一个戏剧性的和选择性的方式在响应这种激动剂。这些结果表明,PC水解是主要的,如果不是唯一的,来源的凝血酶诱导的核甘油二酯在这些成纤维细胞。
Revised Manuscript Received October 12, 1993® abstract: Diglycerides play an important rolein a number of agonist-induced signal transduction pathways. We have recently demonstrated that-thrombin induces a rapid increase in the level of diglyceride mass in the nucleus and a selective increase in nuclear PKC-[Leach, KL, Ruff, V. A., Jarpe,. B., Fabbro, D., Adams, L. D., & Raben, D. M.(1992) J. Biol. Chem. 267, 21816-21822]. In thepresent report, we examined the potential source of the induced nuclear diglycerides by examining the molecular species profiles of both the induced diglycerides and nuclear phospholipids by capillary gas chromatography. The molecular species profiles of the nuclear diglycerides generated resemble the species profiles of PC, and not PI species, at all times. In addition, while our previous data indicatedthat the molecular species of whole-cell phospholipids did not change in response to-thrombin, nuclear PE was altered in a dramatic and selective manner in response to this agonist. These results demonstrate that PC hydrolysis is the predominant, if not exclusive, source of the-thrombin-induced nuclear diglycerides in these fibroblasts.
DOI: --
发表时间: 1985
期刊: The Journal of biological chemistry
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发表时间: 1965
期刊: Biochimica et Biophysica Acta
影响因子: --
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