O-GlcNAc signaling: a metabolic link between diabetes and cancer?

O-GlcNAc signaling: a metabolic link between diabetes and cancer?
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DOI:
10.1016/j.tibs.2010.04.005
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发表时间:
2010-10
影响因子:
13.8
通讯作者:
Hart, G. W.
Hart, G. W.
中科院分区:
生物学1区
文献类型:
--
作者:
Slawson, C.;Copeland, R. J.;Hart, G. W.

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O-连接 β-N-乙酰氨基葡萄糖 (O-GlcNAc) 是核蛋白和细胞质蛋白上丝氨酸或苏氨酸羟基部分的糖附着物。在许多方面,O-GlcNAc 酰化与磷酸化相似,因为两种翻译后修饰都会响应内部或环境提示而快速循环。 O-GlcNAc 酰化蛋白参与转录、翻译、细胞骨架组装、信号转导和许多其他细胞功能。 O-GlcNAc 信号传导与细胞代谢交织在一起;事实上,O-GlcNAc 化的供体糖 (UDP-GlcNAc) 是由葡萄糖、谷氨酰胺和 UTP 通过己糖胺生物合成途径合成的。新兴研究表明,O-GlcNAc 信号传导及其与磷酸化的串扰在糖尿病和癌症等代谢疾病中发生了改变。
O-linked β-N-acetylglucosamine (O-GlcNAc) is a sugar attachment to serine or threonine hydroxyl moieties on nuclear and cytoplasmic proteins. In many ways, O-GlcNAcylation is similar to phosphorylation since both post-translational modifications cycle rapidly in response to internal or environmental cues. O-GlcNAcylated proteins are involved in transcription, translation, cytoskeletal assembly, signal transduction, and many other cellular functions. O-GlcNAc signaling is intertwined with cellular metabolism; indeed, the donor sugar for O-GlcNAcylation (UDP-GlcNAc) is synthesized from glucose, glutamine, and UTP via the hexosamine biosynthetic pathway. Emerging research indicates that O-GlcNAc signaling and its crosstalk with phosphorylation are altered in metabolic diseases, such as diabetes and cancer.
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