Missense mutation in the tubulin-specific chaperone E (Tbce) gene in the mouse mutant progressive motor neuronopathy, a model of human motoneuron disease.

Missense mutation in the tubulin-specific chaperone E (Tbce) gene in the mouse mutant progressive motor neuronopathy, a model of human motoneuron disease.
复制标题

DOI:
10.1083/jcb.200208001
复制
发表时间:
2002-11-25
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Sendtner M
Sendtner M
中科院分区:
其他
文献类型:
--
作者:
Bommel H;Xie G;Rossoll W;Wiese S;Jablonka S;Boehm T;Sendtner M

文献摘要

参考文献

被引文献

相似文献

进行性运动神经元病(pmn)突变小鼠已被广泛用作人类运动神经元病的模型。pmn基因缺陷纯合子的小鼠在出生时看起来很健康,但在出生后第3周发展为进行性运动神经元疾病,导致严重的骨骼肌无力和呼吸衰竭。该疾病始于运动终板,然后导致轴突损失,最后导致相应细胞体的凋亡。我们将pmn小鼠的遗传缺陷定位于小鼠13号染色体上微管蛋白特异性伴侣E(Tbce)基因的错义突变。人类直向同源物定位于染色体1q42.3。Tbce基因编码一种蛋白质(辅因子E),该蛋白质对初级α-微管蛋白和β-微管蛋白异二聚体复合物的形成至关重要。从pmn突变小鼠分离的运动神经元表现出较短的轴突和轴突肿胀,具有不规则结构的β-微管蛋白和tau免疫反应性。因此,pmn基因突变提供了第一个遗传学证据,即微管蛋白组装的改变导致运动轴突的退行性变性,最终导致运动神经元细胞死亡。
Progressive motor neuronopathy (pmn) mutant mice have been widely used as a model for human motoneuron disease. Mice that are homozygous for the pmn gene defect appear healthy at birth but develop progressive motoneuron disease, resulting in severe skeletal muscle weakness and respiratory failure by postnatal week 3. The disease starts at the motor endplates, and then leads to axonal loss and finally to apoptosis of the corresponding cell bodies. We localized the genetic defect in pmn mice to a missense mutation in the tubulin-specific chaperone E (Tbce) gene on mouse chromosome 13. The human orthologue maps to chromosome 1q42.3. The Tbce gene encodes a protein (cofactor E) that is essential for the formation of primary α-tubulin and β-tubulin heterodimeric complexes. Isolated motoneurons from pmn mutant mice exhibit shorter axons and axonal swelling with irregularly structured β-tubulin and tau immunoreactivity. Thus, the pmn gene mutation provides the first genetic evidence that alterations in tubulin assembly lead to retrograde degeneration of motor axons, ultimately resulting in motoneuron cell death.
DOI: 10.1016/0092-8674(95)90460-3
发表时间: 1995-01-13
期刊: CELL
影响因子: 64.5
作者:
LEFEBVRE, S;BURGLEN, L;MELKI, J
通讯作者: MELKI, J
DOI: 10.1083/jcb.149.5.1087
发表时间: 2000-05-29
期刊: The Journal of cell biology
影响因子: --
作者:
Bhamidipati A;Lewis SA;Cowan NJ
通讯作者: Cowan NJ
DOI: 10.1006/geno.2001.6595
发表时间: 2001-07-01
期刊: GENOMICS
影响因子: 4.4
作者:
Martin, N;Jaubert, J;Guénet, JL
通讯作者: Guénet, JL
DOI: 10.1016/s0896-6273(00)81127-7
发表时间: 1999-11-01
期刊: NEURON
影响因子: 16.2
作者:
Ishihara, T;Hong, M;Lee, VMY
通讯作者: Lee, VMY
DOI: 10.1016/s0092-8674(00)80100-2
发表时间: 1996-07-26
期刊: CELL
影响因子: 64.5
作者:
Tian, GL;Huang, Y;Cowan, NJ
通讯作者: Cowan, NJ