Translational Neurodegeneration | |
Regulation of Myelination in the Central Nervous System by Nuclear Lamin B1 and Non-coding RNAs | |
Ying-Hui Fu2  Louis J Ptáček1  Mary Y Heng2  Shu-Ting Lin2  | |
[1] Howard Hughes Medical Institute, University of California, San Francisco, CA 94158, USA;Department of Neurology, University of California, 1550 Fourth street, UCSF-Mission Bay, Rock Hall 548, San Francisco, CA 94158, USA | |
关键词: Myelin; MicroRNA; Long non-coding RNA; Lamin; | |
Others : 838450 DOI : 10.1186/2047-9158-3-4 |
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received in 2013-12-11, accepted in 2014-02-01, 发布年份 2014 | |
【 摘 要 】
Adult-onset autosomal dominant leukodystrophy (ADLD) is a progressive and fatal hereditary demyelination disorder characterized initially by autonomic dysfunction and loss of myelin in the central nervous system (CNS). Majority of ADLD is caused by a genomic duplication of the nuclear lamin B1 gene (LMNB1) encoding lamin B1 protein, resulting in increased gene dosage in brain tissue. In vitro, excessive lamin B1 at the cellular level reduces transcription of myelin genes, leading to premature arrest of oligodendrocyte differentiation. Murine models of ADLD overexpressing LMNB1 exhibited age-dependent motor deficits and myelin defects, which are associated with reduced occupancy of the Yin Yang 1 transcription factor at the promoter region of the proteolipid protein gene. Lamin B1 overexpression mediates oligodendrocyte cell-autonomous neuropathology in ADLD and suggests lamin B1 as an important regulator of myelin formation and maintenance during aging. Identification of microRNA-23 (miR-23) as a negative regulator of lamin B1 can ameliorate the consequences of excessive lamin B1 at the cellular level. miR-23a-overexpressing mice display enhanced oligodendrocyte differentiation and myelin synthesis. miR-23a targets include a protein coding transcript PTEN (phosphatase and tensin homolog on chromosome 10), and a long noncoding RNA (2700046G09Rik), indicating a unique role for miR-23a in the coordination of proteins and noncoding RNAs in generating and maintaining healthy myelin. Here, we provide a concise review of the current literature on clinical presentations of ADLD and how lamin B1 affects myelination and other developmental processes. Moreover, we address the emerging role of non-coding RNAs (ncRNAs) in modulating gene networks, specifically investigating miR-23 as a potential target for the treatment of ADLD and other demyelinating disorders.
【 授权许可】
2014 Lin et al.; licensee BioMed Central Ltd.
【 预 览 】
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【 图 表 】
Figure 1.
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