دورية أكاديمية
Loss of Flot2 expression in deep cerebellar nuclei neurons of mice with Niemann-Pick disease type C
| العنوان: | Loss of Flot2 expression in deep cerebellar nuclei neurons of mice with Niemann-Pick disease type C |
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| المؤلفون: | Tsu-I Chen, Pei-Chun Hsu, Ni-Chung Lee, Yu-Han Liu, Hao-Chun Wang, Yen-Hsu Lu, Yin-Hsiu Chien, Wuh-Liang Hwu |
| المصدر: | Heliyon, Vol 9, Iss 7, Pp e18082- (2023) |
| بيانات النشر: | Elsevier, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Science (General) LCC:Social sciences (General) |
| مصطلحات موضوعية: | Niemann-Pick disease type C, Deep cerebellar nuclei, GM2 ganglioside, Flot2, Lipid rafts, N-acetyl l-leucine, Science (General), Q1-390, Social sciences (General), H1-99 |
| الوصف: | Niemann-Pick disease type C (NPC) is caused by a deficiency of the NPC1 or NPC2 gene, leading to storages of unesterified cholesterol and sphingolipids. Cerebellar ataxia is a main symptom of NPC and the deep cerebellar nuclei (DCN) is the sole signal output of the cerebellum. In this study, we explored the pathological changes in DCN neurons of Npc1 knockout mice (Npc1-). We first demonstrated that DCN neurons of Npc1- mice had prominent ganglioside GM2 accumulation in the late endosomes but not in the lysosomes. More importantly, Flot2 expression, a marker for the lipid rafts, was lost. Single-nucleus RNA sequencing analysis revealed a generalized reduction in gene expression in DCN neurons, though Camk1d, encoding one of the Ca2+/calmodulin-dependent protein kinases (CaMKs), increased in expression. We treated Npc1- mice with CaMK inhibitor KN-93, but CaMK1D expression increased further. We also fed Npc1- mice with two medications for NPC. We found that miglustat, a sphingolipid synthesis inhibitor, increased the expression of Flot2. Moreover, N-acetyl l-leucine (NALL), an experimental medicine for NPC, recovered Flot2 expression. Therefore, our data suggest that in Npc1- mice, GM2 sequestration and the loss of lipid rafts lead to cell dysfunction and symptoms of NPC. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2405-8440 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2405844023052908; https://doaj.org/toc/2405-8440 |
| DOI: | 10.1016/j.heliyon.2023.e18082 |
| URL الوصول: | https://doaj.org/article/a5ad9a6a66ae46bb844b107b3c9d3b61 |
| رقم الأكسشن: | edsdoj.5ad9a6a66ae46bb844b107b3c9d3b61 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 24058440 |
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| DOI: | 10.1016/j.heliyon.2023.e18082 |