Novel neuroprotective function of apical-basal polarity gene crumbs in amyloid beta 42 (aβ42) mediated neurodegeneration.

Novel neuroprotective function of apical-basal polarity gene crumbs in amyloid beta 42 (aβ42) mediated neurodegeneration.
复制标题

DOI:
10.1371/journal.pone.0078717
复制
发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Singh A
Singh A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Steffensmeier AM;Tare M;Puli OR;Modi R;Nainaparampil J;Kango-Singh M;Singh A

文献摘要

参考文献

被引文献

相似文献

阿尔茨海默病(AD, OMIM: 104300)是一种进行性神经退行性疾病,迄今尚未治愈,是由淀粉样蛋白- β -42 (a- β42)聚集体的产生引起的,该聚集体以未知的机制触发神经元细胞死亡。我们开发了一种转基因果蝇眼模型,其中人类a β42的错误表达导致神经视网膜ad样神经病理。我们已经确定了一个顶基极性基因屑(crb)作为a β42介导的神经病理的遗传修饰因子。Aβ42的错表达导致Crb表达上调,而通过RNAi或零等位基因方法下调Crb可挽救Aβ42介导的神经退行性变。与野生型相比,全长Crb与Aβ42的共表达增加了Aβ42介导的神经退行性变的严重程度,这是由于细胞死亡的三倍诱导。较高的Crb水平会影响从视网膜到大脑的轴突靶向。结构功能分析表明,胞内Crb结构域是a β42介导的神经变性所必需的。我们证明了Crb在a β42介导的神经变性中具有新的神经保护作用。
Alzheimer's disease (AD, OMIM: 104300), a progressive neurodegenerative disorder with no cure to date, is caused by the generation of amyloid-beta-42 (Aβ42) aggregates that trigger neuronal cell death by unknown mechanism(s). We have developed a transgenic Drosophila eye model where misexpression of human Aβ42 results in AD-like neuropathology in the neural retina. We have identified an apical-basal polarity gene crumbs (crb) as a genetic modifier of Aβ42-mediated-neuropathology. Misexpression of Aβ42 caused upregulation of Crb expression, whereas downregulation of Crb either by RNAi or null allele approach rescued the Aβ42-mediated-neurodegeneration. Co-expression of full length Crb with Aβ42 increased severity of Aβ42-mediated-neurodegeneration, due to three fold induction of cell death in comparison to the wild type. Higher Crb levels affect axonal targeting from the retina to the brain. The structure function analysis identified intracellular domain of Crb to be required for Aβ42-mediated-neurodegeneration. We demonstrate a novel neuroprotective role of Crb in Aβ42-mediated-neurodegeneration.
DOI: 10.1021/bi026888g
发表时间: 2003-01-14
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Kimberly, WT;Esler, WP;Wolfe, MS
通讯作者: Wolfe, MS
DOI: 10.1038/sj.embor.7400617
发表时间: 2006-03-01
期刊: EMBO REPORTS
影响因子: 7.7
作者:
Herranz, H;Stamataki, E;Milán, M
通讯作者: Milán, M
DOI: 10.1534/genetics.107.078394
发表时间: 2008-03-01
期刊: GENETICS
影响因子: 3.3
作者:
Cao, Weihuan;Song, Ho-Juhn;Konsolaki, Mary
通讯作者: Konsolaki, Mary
DOI: 10.1371/journal.pone.0021218
发表时间: 2011
期刊: PloS one
影响因子: 3.7
作者:
League GP;Nam SC
通讯作者: Nam SC
DOI: 10.1038/414638a
发表时间: 2001-12-06
期刊: NATURE
影响因子: 64.8
作者:
Bachmann, A;Schneider, M;Knust, E
通讯作者: Knust, E