Delineating the Factors and Cellular Mechanisms Involved in the Survival of Cerebellar Granule Neurons

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• 作者：Xavier Xifró ; José Rodríguez-álvarez
• 关键词：Cerebellar granule neurons ; Development ; Differentiation ; Neuroprotection ; Survival pathways
• 刊名：The Cerebellum
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：14
• 期：3
• 页码：354-359
• 全文大小：549 KB
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  24.Villalba M, Bockaert J, Journot
• 作者单位：Xavier Xifró (1)
  José Rodríguez-álvarez (2) (3)
  
  1. Departament de Ciències Mèdiques, Facultat de Medicina, Universitat de Girona, C/ Emili Grahit, 77, 17071, Girona, Spain
  2. Institut de Neurociencies and Dpt. Bioquímica i Biología Molecular, Universitat Autònoma de Barcelona, 08193, Cerdanyola del Vallès, Spain
  3. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
  
• 刊物主题：Neurosciences; Neurology; Neurobiology;
• 出版者：Springer US
• ISSN：1473-4230

文摘

Cerebellar granule neurons (CGNs) constitute the most abundant neuronal population in the mammalian brain. Their postnatal generation and the feasibility to induce their apoptotic death in vitro make them an excellent model to study the effect of several neurotransmitters and neurotrophins. Here, we first review which factors are involved in the generation and proliferation of CGNs in the external granule layer (EGL) and in the regulation of their differentiation and migration to internal granule layer (IGL). Special attention was given to the role of several neurotrophins and the NMDA subtype of glutamate receptor. Then, using the paradigm of potassium deprivation in cultured CGNs, we address several extracellular factors that promote the survival of CGNs, with particular emphasis on the cellular mechanisms. The role of specific protein kinases leading to the regulation of transcription factors and recent data involving the small G protein family is also discussed. Finally, the participation of some members of Bcl-2 family and the inhibition of mitochondria-related apoptotic pathway is also considered. Altogether, these studies evidence that CGNs are a key model to understand the development and the survival of neuronal populations.