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ATP5PO水平调节斑马鱼肠道神经系统的发育,这将赫施普隆病与唐氏综合征联系起来
L E Kuil1, R K Chauhan1, B M de Graaf1
1Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands.
Biochimica et biophysica acta. Molecular basis of disease
|December 21, 2023
概括
唐氏综合征 (DS) 中的赫施普朗格病 (HSCR) 风险与ATP5PO基因有关. 平衡的ATP5PO表达对于肠道神经系统的发育至关重要,特别是在RET基因变异中.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 神经科学是一个神经科学.
背景情况:
- 赫施普隆病 (HSCR) 是一种复杂的遗传疾病,影响肠道神经系统 (ENS).
- 唐氏综合征 (DS) 患者的HSCR发病率显著更高,涉及人类染色体21 (Hsa21) 基因.
- 鉴定导致HSCR病因的特定Hsa21基因一直具有挑战性.
研究的目的:
- 确定Hsa21上的基因,这些基因有助于增加唐氏综合征患者的HSCR风险.
- 用斑马鱼模型研究候选基因在ENS发育中的作用.
主要方法:
- 在DS-HSCR敏感区域内对Hsa21候选基因进行遗传选.
- 利用斑马鱼作为基因表达和功能研究的模型生物.
- 对神经母细胞瘤细胞系进行体外研究,以评估蛋白质水平,神经元分化和线粒体功能.
主要成果:
- 根据斑马鱼的位置,表达和存在情况,选择了四个候选基因 (RCAN1,ITSN1,ATP5PO,SUMO3).
- 在斑马鱼中,ATP5PO的过度表达显著减少了ENS细胞.
- 在体外,ATP5PO过度表达导致蛋白质水平降低,神经元分化受损,线粒体ATP产生减少.
- 在ATP5PO和HSCR基因RET之间观察到表观性.
结论:
- ATP5PO被确定为一个关键基因,负责DS患者的高HSCR风险,特别是当RET变异存在时.
- 平衡的ATP5PO表达对于ENS正常发育至关重要.
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