A Missense Mutation in the Vacuolar Protein Sorting 11 (VPS11) Gene Is Associated with Neuroaxonal Dystrophy in Rottweiler Dogs.

A Missense Mutation in the Vacuolar Protein Sorting 11 (VPS11) Gene Is Associated with Neuroaxonal Dystrophy in Rottweiler Dogs.
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DOI:
10.1534/g3.118.200376
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发表时间:
2018-07-31
期刊:
G3 (Bethesda, Md.)
影响因子:
--
通讯作者:
Bannasch DL
Bannasch DL
中科院分区:
其他
文献类型:
--
作者:
Lucot KL;Dickinson PJ;Finno CJ;Mansour TA;Letko A;Minor KM;Mickelson JR;Drögemüller C;Brown CT;Bannasch DL

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犬神经轴突营养不良 (NAD) 是年轻成年罗威纳犬 (Canis lupusamilis) 的一种隐性退行性神经系统疾病,其病理特征是主要针对感觉轴突末端的轴突球体。对 7 只受 NAD 影响的罗威纳犬和 42 只对照犬进行的全基因组关联研究揭示了犬 5 号染色体 (CFA 5) 上的一个显着相关区域。相关区域内的纯合性将关键区间缩小到与表型相关的 4.46 Mb 单倍型(CFA5:11.28 Mb – 15.75 Mb;CanFam3.1)。对两例经组织病理学证实的犬 NAD 病例和 98 只未受 NAD 影响的犬进行全基因组测序,结果显示液泡蛋白分选 11 (VPS11) 基因 (g.14777774T > C; p.H835R) 内存在与表型相关的纯合错义突变。这些发现为在罗威纳犬中进行生前测试来确认 NAD 提供了机会,其中等位基因频率估计为 2.3%。 VPS11 突变与人类退行性白质脑病有关,并且 VSP11 还应作为无法解释的人类 NAD 病例的候选基因。
Canine neuroaxonal dystrophy (NAD) is a recessive, degenerative neurological disease of young adult Rottweiler dogs (Canis lupus familiaris) characterized pathologically by axonal spheroids primarily targeting sensory axon terminals. A genome-wide association study of seven Rottweilers affected with NAD and 42 controls revealed a significantly associated region on canine chromosome 5 (CFA 5). Homozygosity within the associated region narrowed the critical interval to a 4.46 Mb haplotype (CFA5:11.28 Mb – 15.75 Mb; CanFam3.1) that associated with the phenotype. Whole-genome sequencing of two histopathologically confirmed canine NAD cases and 98 dogs unaffected with NAD revealed a homozygous missense mutation within the Vacuolar Protein Sorting 11 (VPS11) gene (g.14777774T > C; p.H835R) that was associated with the phenotype. These findings present the opportunity for an antemortem test for confirming NAD in Rottweilers where the allele frequency was estimated at 2.3%. VPS11 mutations have been associated with a degenerative leukoencephalopathy in humans, and VSP11 should additionally be included as a candidate gene for unexplained cases of human NAD.
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