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MicroRNAs and deregulated gene expression networks in neurodegeneration Sonntag KCBrain Res 2010[Jun]; 1338 (ä): 48-57Neurodegeneration is characterized by the progressive loss of neuronal cell types in the nervous system. Although the main cause of cell dysfunction and death in many neurodegenerative diseases is not known, there is increasing evidence that their demise is a result of a combination of genetic and environmental factors which affect key signaling pathways in cell function. This view is supported by recent observations that disease-compromised cells in late-stage neurodegeneration exhibit profound dysregulation of gene expression. MicroRNAs (miRNAs) introduce a novel concept of regulatory control over gene expression and there is increasing evidence that they play a profound role in neuronal cell identity as well as multiple aspects of disease pathogenesis. Here, we review the molecular properties of brain cells derived from patients with neurodegenerative diseases, and discuss how deregulated miRNA/mRNA expression networks could be a mechanism in neurodegeneration. In addition, we emphasize that the dysfunction of these regulatory networks might overlap between different cell systems and suggest that miRNA functions might be common between neurodegeneration and other disease entities.|*Gene Expression Regulation[MESH]|Animals[MESH]|Humans[MESH]|MicroRNAs/*metabolism[MESH]|Models, Neurological[MESH]|Neurodegenerative Diseases/*genetics/*metabolism[MESH] |
