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空间转录组学揭示了小鼠肝脏中AEG-1的棕化和区域依赖基因调节

Alissa Saverino¹, Xufeng Qu², Rachel G Mendoza¹

¹Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia, USA.

The Journal of biological chemistry

|April 27, 2024

概括

星球细胞升高基因-1 (AEG-1) 的棕化影响肝脏的区域化,影响代谢功能障碍相关的脂肪肝炎 (MASH) 和肝细胞癌 (HCC) 的发展. AEG-1-C75S突变改变了特定肝脏区域的基因表达,可能导致疾病的进展.

科学领域:

肝病学肝病学是一种肝病学.
分子生物学分子生物学
基因组学就是基因组学.

背景情况:

肥胖引起的代谢功能障碍相关的脂肪肝炎 (MASH) 和肝细胞癌 (HCC) 是严重的健康问题.
恒星细胞升高的基因-1/甲素 (AEG-1/MTDH) 参与MASH和HCC的发病.
在Cys75的AEG-1棕化是关键的调节机制.

研究的目的:

研究AEG-1棕化在肝脏区域特异性基因调节中的作用.
阐明不同肝脏区域的AEG-1-介导基因表达变化如何导致MASH和HCC.

主要方法:

空间转录学 (ST) 用于分析野生型 (AEG-1-WT) 和Cys75突变 (AEG-1-C75S) 鼠肝中的基因表达.
用特定区域和细胞类型的标记物来识别ST群中的不同肝脏区域和细胞群.
发明性途径分析 (IPA) 对差异表达的基因进行,以确定受影响的生物途径.

主要成果:

实验室确定了六个不同的集群,每个都有特定的区域和细胞类型.
AEG-1-C75S突变肝脏显示出促炎和MASH/HCC促进通路的激活,特别是在周围和周围中心肝细胞中.
与AEG-1-WT相比,AEG-1-C75S肝脏中的中叶状区域表现出抑制的异生代谢和抑制的PXR/RXR和LXR/RXR信号.

结论:

AEG-1棕化状态显著影响肝脏中特定区域的基因表达.
在AEG-1-C75S突变体中观察到的特定区域的基因表达变化可能是代谢功能障碍和药物代谢失调的基础.
这些变化可能有助于MASH和HCC的发展.

关键词:

在AEG-1中,AEG-1是AEG-1.这是一种炎症炎症炎症炎症.小鼠的肝脏是小鼠的肝脏.空间转录学空间转录学区域划分区分区分区分区分区分区分区分区分区分区分区分

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