Fatty acid signaling: the new function of intracellular lipases.

Fatty acid signaling: the new function of intracellular lipases.
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DOI:
10.3390/ijms16023831
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发表时间:
2015-02-10
影响因子:
5.6
通讯作者:
Cahova M
Cahova M
中科院分区:
生物学2区
文献类型:
--
作者:
Papackova Z;Cahova M

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直到最近,以细胞质脂滴形式储存的细胞内三酰甘油(TAG)一直被认为只是被动的“能量保存”。然而,TAG的降解产生了生物活性中间体的多效性谱,其可以作为转录因子或酶的有效辅因子起作用,并有助于调节许多细胞过程。从这个角度来看,脂解过程不仅提供了丰富的能量,而且还获得了新的调节功能。在这篇综述中,我们将集中讨论从细胞内TAG库中释放的脂肪酸作为信号分子的作用。第一部分概述了转录因子,这些转录因子受来自细胞内储存的脂肪酸的调节。第二部分致力于脂肪酸信号在不同器官/组织中的作用。还将讨论由特定脂肪酶、脂肪敏感脂肪酶、脂肪三酰甘油脂肪酶和溶酶体脂肪酶释放的游离脂肪酸的具体贡献。
Until recently, intracellular triacylglycerols (TAG) stored in the form of cytoplasmic lipid droplets have been considered to be only passive “energy conserves”. Nevertheless, degradation of TAG gives rise to a pleiotropic spectrum of bioactive intermediates, which may function as potent co-factors of transcription factors or enzymes and contribute to the regulation of numerous cellular processes. From this point of view, the process of lipolysis not only provides energy-rich equivalents but also acquires a new regulatory function. In this review, we will concentrate on the role that fatty acids liberated from intracellular TAG stores play as signaling molecules. The first part provides an overview of the transcription factors, which are regulated by fatty acids derived from intracellular stores. The second part is devoted to the role of fatty acid signaling in different organs/tissues. The specific contribution of free fatty acids released by particular lipases, hormone-sensitive lipase, adipose triacylglycerol lipase and lysosomal lipase will also be discussed.
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