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通过调节蛋白激酶B/蛋白激酶B(PKB/Akt)激活来调控中性粒细胞凋亡

Regulation of neutrophil apoptosis by modulation of PKB/Akt activation.

作者信息

Rane Madhavi J, Klein Jon B

机构信息

Department of Medicine, University of Louisville, Louisville, Kentucky, Louisville, Kentucky, USA.

出版信息

Front Biosci (Landmark Ed). 2009 Jan 1;14(7):2400-12. doi: 10.2741/3386.

Abstract

The serine/threonine kinase, Akt, also known as PKB (Protein Kinase B) is one important signal transduction pathway that mediates the delay of neutrophil apoptosis caused by inflammatory mediators. Proteins controlled by the PKB/Akt pathway have been reported to prevent or reverse apoptotic-signaling pathways and regulate cell survival. In this review we discuss the role of PKB/Akt activation in the regulation of neutrophil activation during inflammation, and the importance of resolving the inflammatory response by inhibiting PKB/Akt activation and neutrophil survival. Furthermore, we introduce the concept of a dynamic Akt signal complex that is altered when an extracellular signal is initiated such that changes in protein-protein interactions within the Akt signal complex regulates Akt activity and cell survival. Various substrates of PKB/Akt as well as positive and negative regulators of PKB/Akt activation are discussed which in turn inhibit or enhance cellular survival.

摘要

丝氨酸/苏氨酸激酶Akt,也被称为蛋白激酶B(PKB),是介导炎症介质引起的中性粒细胞凋亡延迟的一条重要信号转导途径。据报道,由PKB/Akt途径调控的蛋白质可预防或逆转凋亡信号途径并调节细胞存活。在本综述中,我们讨论了PKB/Akt激活在炎症过程中中性粒细胞激活调控中的作用,以及通过抑制PKB/Akt激活和中性粒细胞存活来解决炎症反应的重要性。此外,我们介绍了动态Akt信号复合物的概念,当细胞外信号启动时,该复合物会发生改变,使得Akt信号复合物内蛋白质-蛋白质相互作用的变化调节Akt活性和细胞存活。我们还讨论了PKB/Akt的各种底物以及PKB/Akt激活的正负调节因子,它们反过来抑制或增强细胞存活。

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