综合生物信息学分析揭示了扩展性心肌病中异常甲基化的差异表达基因
Nana Li1,2,3, Jinglin Wang4,5,6,1,2,3, Xuhong Wang1,2,3
1Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
International journal of medical sciences
|July 15, 2024
概括
这项研究确定了5个与扩张性心肌病 (DCM) 相关的异常DNA甲基化关键基因,为这种心脏病提供了潜在的诊断标记.
科学领域:
- 遗传学和表观遗传学
- 心血管疾病研究研究
- 生物信息学和计算生物学
背景情况:
- 扩张性心肌病 (DCM) 是心力衰竭和心脏突然死亡的重要原因.
- 表观遗传修饰,特别是DNA甲基化,在心肌病中起作用,但它们与DCM的具体联系尚不清楚.
- 了解DCM中的DNA甲基化模式对于识别疾病机制和潜在的治疗点至关重要.
研究的目的:
- 使用生物信息学识别与DCM相关的异常甲基化差异表达基因 (DEGs).
- 描述这些已识别的DEG在DCM诊断中的临床实用性.
- 在DCM小鼠模型中验证这些基因的表达.
主要方法:
- 在人类DCM和控制心脏组织的公共数据集上利用了全表观基因组关联研究.
- 应用生物信息学分析包括后勤回归,LASSO,随机森林和SVM来选核心基因.
- 在小鼠心脏组织中使用实时定量PCR验证异常甲基化DEG.
主要成果:
- 鉴定了3,353个细胞因子-氨酸二核酸位和479个DCM相关基因.
- 确定了8个具有异常甲基化模式的DEG,并确定了5个核心基因.
- 在DCM小鼠模型中确认了SLC16A9,SNCA,PDE5A,FNDC1和HTRA1的高表达.
- 开发了一个诊断模型,AUC为0.949,在区分DCM和非DCM样本方面表现出高准确度.
结论:
- 确定了5个异常甲基化异常表达的基因,作为DCM的潜在生物标志物.
- 这些基因 (SLC16A9,SNCA,PDE5A,FNDC1,HTRA1) 显示出作为诊断或治疗点的进一步研究的希望.
- 综合生物信息学和体内方法为理解DCM表观遗传学提供了坚实的基础.
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