The role of overexpressed DYRK1A protein in the early onset of neurofibrillary degeneration in Down syndrome.

The role of overexpressed DYRK1A protein in the early onset of neurofibrillary degeneration in Down syndrome.
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过表达的DyRK1a蛋白在唐氏综合症的神经原纤维变性早期发作中的作用。

DOI:
10.1007/s00401-008-0419-6
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发表时间:
2008-10
影响因子:
12.7
通讯作者:
Hwang YW
Hwang YW
中科院分区:
医学1区
文献类型:
--
作者:
Wegiel J;Dowjat K;Kaczmarski W;Kuchna I;Nowicki K;Frackowiak J;Mazur Kolecka B;Wegiel J;Silverman WP;Reisberg B;Deleon M;Wisniewski T;Gong CX;Liu F;Adayev T;Chen-Hwang MC;Hwang YW

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编码小脑激酶/双特异性酪氨酸磷酸化和调节激酶 1A (DYRK1A) 的基因位于 21 号染色体的唐氏综合症 (DS) 关键区域。DYRK1A 的第三个拷贝被认为与唐氏综合症患者的大脑发育异常有关。体外研究显示 DYRK1A 磷酸化 tau 蛋白,表明该激酶也参与人脑中 tau 蛋白的磷酸化,并导致神经原纤维变性,并且这种作用在 DS 患者中可能会增强。为了探索这一假设,我们使用两种针对 DYRK1A 氨基末端的抗体(7F3 和 G-19)以及两种针对其羧基末端的多克隆抗体(X1079 和 324446)对 57 名受试者(包括 16 名对照受试者、21 名 DS 患者和 20 名散发性阿尔茨海默病 (AD) 患者)的脑组织进行了检查。蛋白质印迹显示,与对照大脑相比,DS 患者大脑中全长 DYRK1A 的水平更高。免疫细胞化学显示,在散发性 AD 受试者和 DS/AD 受试者中,DYRK1A 在神经原纤维缠结 (NFT) 中积聚。 DS 患者中 DYRK1A 的过度表达与 DYRK1A 阳性 NFT 的增加相关,且呈基因剂量依赖性。结果支持这样的假设:与具有两个 DYRK1A 基因拷贝和散发性 AD 的受试者相比,过度表达 DYRK1A 对 DS 中的神经原纤维变性的影响更显着。 DYRK1A 抗体的免疫反应性不仅在 NFT 中,而且在粒空泡变性和淀粉体的颗粒中也存在,表明 DYRK1A 参与所有三种形式的变性,并且该激酶的过度表达可能导致 DS 中这些病理的早期发作。
The gene encoding the minibrain kinase/dual-specificity tyrosine phosphorylated and regulated kinase 1A (DYRK1A) is located in the Down syndrome (DS) critical region of chromosome 21. The third copy of DYRK1A is believed to contribute to abnormal brain development in patients with DS. In vitro studies showing that DYRK1A phosphorylates tau protein suggest that this kinase is also involved in tau protein phosphorylation in the human brain and contributes to neurofibrillary degeneration, and that this contribution might be enhanced in patients with DS. To explore this hypothesis, the brain tissue from 57 subjects including 16 control subjects, 21 patients with DS, and 20 patients with sporadic Alzheimer's disease (AD) was examined with two antibodies to the amino-terminus of DYRK1A (7F3 and G-19), as well as two polyclonal antibodies to its carboxy-terminus (X1079 and 324446). Western blots demonstrated higher levels of full-length DYRK1A in the brains of patients with DS when compared to control brains. Immunocytochemistry revealed that DYRK1A accumulates in neurofibrillary tangles (NFTs) in subjects with sporadic AD and in subjects with DS/AD. Overexpression of DYRK1A in patients with DS was associated with an increase in DYRK1A-positive NFTs in a gene dosage-dependent manner. Results support the hypothesis that overexpressed DYRK1A contributes to neurofibrillary degeneration in DS more significantly than in subjects with two copies of the DYRK1A gene and sporadic AD. Immunoreactivity with antibodies against DYRK1A not only in NFTs but also in granules in granulovacuolar degeneration and in corpora amylacea suggests that DYRK1A is involved in all three forms of degeneration and that overexpression of this kinase may contribute to the early onset of these pathologies in DS.
DOI: 10.1016/j.neulet.2006.11.026
发表时间: 2007-02-08
影响因子: 2.5
作者:
Dowjat, Wieslaw K.;Adayev, Tatyana;Wegiel, Jerzy
通讯作者: Wegiel, Jerzy
DOI: 10.1007/bf00686619
发表时间: 1987-01-01
影响因子: 12.7
作者:
DICKSON, DW;KSIEZAKREDING, H;YEN, SH
通讯作者: YEN, SH
DOI: 10.1093/jnen/62.6.685
发表时间: 2003-06-01
影响因子: 3.2
作者:
Frackowiak, J;Miller, DL;Mazur-Kolecka, B
通讯作者: Mazur-Kolecka, B
DOI: 10.1016/0896-6273(89)90210-9
发表时间: 1989-10-01
期刊: NEURON
影响因子: 16.2
作者:
GOEDERT, M;SPILLANTINI, MG;CROWTHER, RA
通讯作者: CROWTHER, RA
DOI: 10.1016/s0169-328x(01)00166-8
发表时间: 2001-10-19
期刊: MOLECULAR BRAIN RESEARCH
影响因子: --
作者:
Buervenich, S;Olson, L;Galter, D
通讯作者: Galter, D