一个广泛的β1-上腺素受体基因信号网络调节了扩大心肌病的分子重塑
Philip D Tatman1, David P Kao1,2, Kathryn C Chatfield1,3
1Division of Cardiology, Department of Medicine, and.
JCI insight
|August 22, 2023
概括
一个与β1-上腺体受体 (β1-AR) 相关的大型基因网络驱动病态心室重塑. 在反向重塑过程中,代谢基因在这个网络中最为普遍.
科学领域:
- 心血管生物学 心血管生物学
- 分子心脏病学分子心脏病学
- 基因网络分析 基因网络分析
背景情况:
- 病态的左心室 (LV) 重建是心力衰竭的标志.
- β1-上腺素受体 (β1-AR) 在心脏功能和功能障碍中起着关键作用.
- 了解β1-AR的下游信号网络对于治疗开发至关重要.
研究的目的:
- 为了研究参与LV异常改造的β1-AR下游的基因信号网络 (β1-GSN).
- 描述这个网络的生物通路,表型特异性和潜在调节.
- 为了比较β1-GSN表达与非网络基因与心脏重塑指数的关系.
主要方法:
- 在转基因小鼠和文献策划中使用mRNA表达的430个成员β1-GSN的识别.
- 来自反向改造扩张性心肌病患者的内心肌瘤活检的分析.
- 比较β1-GSN表达与19243个非网络基因.
- 识别潜在的 cis 作用调节性 lncRNAs.
主要成果:
- 在反向重塑中,β1-GSN表现出相反方向的基因行为.
- 主要的生物类别包括代谢 (81%上调),基因调节 (78%上调),细胞外矩阵/纤维化 (92%下调) 和细胞平衡 (60%上调).
- 对β1-GSN类别的表型选择观察到LV重塑指数 (射出分数,末缩体积) 和壁张力替代物.
结论:
- 从β1-AR下游的一个广泛的430个成员的基因网络与病理性心室重塑有关.
- 代谢基因代表了β1-GSN中最普遍的类别.
- 121个lncRNA被确定为β1-GSN的潜在cis作用调节剂.
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