Anatomical distributional defects in mutant genes associated with dominant intermediate Charcot-Mari

来源 :中国神经再生研究(英文版) | 被引量 : 0次 | 上传用户:caery
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Dominant intermediate Charcot-Marie-Tooth disease type C (DI-CMTC) is a dominantly inherited neu-ropathy that has been classified primarily based on motor conduction velocity tests but is now known to involve axonal and demyelination features. DI-CMTC is linked to tyrosyl-tRNA synthetase (YARS)-as-sociated neuropathies, which are caused by E196K and G41R missense mutations and a single de novo deletion (153-156delVKQV). It is well-established that these YARS mutations induce neuronal dysfunction, morphological symptoms involving axonal degeneration, and impaired motor performance. The present study is the first to describe a novel mouse model of YARS-mutation-induced neuropathy involving a neu-ron-specific promoter with a deleted mitochondrial targeting sequence that inhibits the expression of YARS protein in the mitochondria. An adenovirus vector system and in vivo techniques were utilized to express YARS fusion proteins with a Flag-tag in the spinal cord, peripheral axons, and dorsal root ganglia. Follow-ing transfection of YARS-expressing viruses, the distributions of wild-type (WT) YARS and E196K mutant proteins were compared in all expressed regions; G41R was not expressed. The proportion of Flag/green flu-orescent protein (GFP) double-positive signaling in the E196K mutant-type mice did not significantly differ from that of WT mice in dorsal root ganglion neurons. All adenovirus genes, and even the empty vector without the YARS gene, exhibited GFP-positive signaling in the ventral h of the spinal cord because GFP in an adenovirus vector is driven by a cytomegalovirus promoter. The present study demonstrated that ana-tomical differences in tissue can lead to dissimilar expressions of YARS genes. Thus, use of this novel animal model will provide data regarding distributional defects between mutant and WT genes in neurons, the DI-CMTC phenotype, and potential treatment approaches for this disease.
其他文献
Cytoskeletal proteins are involved in neuronal survival.Brain-derived neurotrophic factor can increase expression of cytoskeletal proteins during regeneration a
The fermented Chinese formula Shuan-Tong-Ling is composed of radix puerariae (Gegen), salvia miltiorrhiza (Danshen), radix curcuma (Jianghuang), hawth (Shanzha)
研究:抑郁与心血管疾病风险增加有关。治疗抑郁可以改善心血管转归吗?该研究在初级保健诊所中评估了抗抑郁治疗对主要不良心血管事件( mACE)风险的影响。超过2.6万例40岁以上、既
Our previous study revealed that intragastric administration of naringin improved remyelination in rats with spinal cord injury and pro-moted the recovery of ne
“数据研究分享”即是依据现有的卫生事件信息收集系统,对数据进行汇总、整理、分析,从宏观角度展现卫生事件的动态变化特点,这对预测未来卫生事件的发展趋势,并及时进行干预
期刊
Scar formation after spinal cord injury is regarded as an obstacle to axonal regeneration and functional recovery. Epothilone B provides moderate microtubule st
Peripheral nerve injuries with a poor prognosis are common. Evening primrose oil (EPO) has beneficial biological effects and immunomodulatory properties. Since
Anesthesiologists work to prevent or minimize secondary injury of the nervous system and improve the outcome of medical procedures. To this end, anesthesiologis
患者男,38岁,饭店经理.5个月前发现患者右手肌无力,逐渐加重,3个月前出现写字、拿筷子有些困难,有“肌肉跳动感”,主要在右上肢、右肩和双小腿.讲话及吞咽正常.逐渐发现右手