Luo Jia
Department of Internal Medicine, University of Kentucky College of Medicine, Lexington, KY 40536, USA.
Front Biol (Beijing). 2012 Jun;7(3):212-220. doi: 10.1007/s11515-012-1222-2.
Glycogen synthase kinase 3β (GSK3β) is a multifunctional serine/threonine kinase. It is particularly abundant in the developing central nervous system (CNS). Since GSK3β has diverse substrates ranging from metabolic/signaling proteins and structural proteins to transcription factors, it is involved in many developmental events in the immature brain, such as neurogenesis, neuronal migration, differentiation and survival. The activity of GSK3β is developmentally regulated and is affected by various environmental/cellular insults, such as deprivation of nutrients/trophic factors, oxidative stress and endoplasmic reticulum stress. Abnormalities in GSK3β activity may disrupt CNS development. Therefore, GSK3β is a critical signaling protein that regulates brain development. It may also determine neuronal susceptibility to damages caused by various environmental insults.
糖原合酶激酶3β(GSK3β)是一种多功能丝氨酸/苏氨酸激酶。它在发育中的中枢神经系统(CNS)中特别丰富。由于GSK3β有多种底物,从代谢/信号蛋白、结构蛋白到转录因子,它参与了未成熟大脑中的许多发育事件,如神经发生、神经元迁移、分化和存活。GSK3β的活性受发育调控,并受到各种环境/细胞损伤的影响,如营养/营养因子剥夺、氧化应激和内质网应激。GSK3β活性异常可能会破坏中枢神经系统的发育。因此,GSK3β是调节大脑发育的关键信号蛋白。它还可能决定神经元对各种环境损伤所造成损害的易感性。