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显著的基因表达模式过度表达alpha-synuclein的年轻小鼠结肠和直体的基因表达变化支持帕金森病作为多系统过程

Elizabeth J Videlock¹, Asa Hatami², Chunni Zhu²

¹Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.

Journal of Parkinson's disease

|August 28, 2023

概括

帕金森病 (PD) 模型中的早期肠道基因表达变化与大脑变化不同. 调查这些肠道特异性的分子干扰可能会揭示早期PD生物标志物和新的治疗点.

科学领域:

神经科学是一个神经科学.
基因组学就是基因组学.
胃肠病学胃肠病学

背景情况:

肠-大脑轴在帕金森病 (PD) 中发挥着作用.
过度表达alpha-synuclein (Thy1-haSyn) 的小鼠表现出早期的结肠过境问题,模仿发生性PD便秘.
识别肠道分子变化可能会导致早期PD生物标志物和肠道向治疗.

研究的目的:

通过基因表达分析,识别Thy1-haSyn小鼠肠-大脑轴的早期分子变化.
为了研究小鼠结肠和大脑的基因表达差异,模拟帕金森病.

主要方法:

通过1个月和3个月的Thy1-haSyn和野生型 (WT) 小鼠的结肠和条状组织上的3'RNA测序来分析基因表达概况.
分析包括差异性基因表达,基因组丰富和权重基因共同表达网络分析 (WGCNA).

主要成果:

一个月后,线粒体基因表达和PD相关途径在肠道和大脑之间不一致.
肠道基因表达变化得到了积极丰富,而大脑显示了负面丰富.
WGCNA揭示了肠道和大脑基因表达的变化是部分独立的,肠道模块为PD风险基因和通路 (炎症,自,氧化应激) 进行了丰富.
3个月后,基因表达的变化很小.

结论:

在PD小鼠模型中,α-synuclein过度表达急性地破坏了结肠基因表达.
肠道基因表达的变化与PD机制有关,但与大脑变化不同,并且可能与大脑变化相反.
这些发现支持认为PD是一种多系统性疾病,具有明显的肠道和大脑病理.

关键词:

帕金森病是帕金森氏症的一种疾病.这是一种α-synuclein.大脑-肠轴 - 大脑-肠轴基因表达分析基因表达分析

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