综合性DNA甲基化和转录组分析揭示了细胞类型的特异性模式,以应对升高的全静电负荷
O Emery1,2, C Carmeli3, S Gonseth-Nusslé4
1Department of Health Promotion and Prevention (DPSP), Unisanté, University Center for Primary Care and Public Health, Lausanne, Switzerland.
Epigenetics
|October 29, 2025
概括
高静态负荷 (AL),慢性压力的标志物,与健康状况不佳有关. 这项研究揭示了与AL相关的细胞特异性DNA甲基化和基因表达变化,有可能识别新的生物标志物和与压力相关的疾病的治疗点.
科学领域:
- 表观遗传学和系统生物学
- 人类生理学和健康 人类生理学和健康
- 基因组学和转录基因组学
背景情况:
- 静态负荷 (AL) 量化了慢性压力的生理失调,与心血管疾病和死亡率等不良健康结果有关.
- 基因甲基化 (DNAm) 是基因和环境影响的关键表观遗传机制,调节基因表达.
- 结合表观遗传和转录基因数据,可以了解压力引起的健康差异背后的生物过程.
研究的目的:
- 为了研究细胞类型特定的DNA甲基化和高和低静态负荷组之间的基因表达差异.
- 确定与慢性压力相关的潜在表观遗传生物标志物和治疗点.
- 通过综合的奥米克学方法,阐明将静态负荷与健康结果联系起来的生物机制.
主要方法:
- 利用了来自429名瑞士脏项目对高血压基因 (SKIPOGH) 队列的大量DNAm和转录组数据.
- 采用张量组合分析 (TCA) 和CIBERSORTx来将全血信号分解为六种血细胞类型的细胞类型特定数据.
- 对每个细胞类型的高 (N=126) 与低 (N=303) AL 组进行了DNAm和基因表达的差异分析.
主要成果:
- 在所有细胞类型中确定了263个CpG基因对 (250个CpG,138个差异甲基化基因).
- 观察到高AL个体的CD8T和B细胞中下调基因中免疫过程的丰富.
- 结果表明高AL的免疫反应受损,与已知的慢性压力对健康的影响一致.
结论:
- 细胞特异性表观遗传和转录组分析对于理解复杂的生物状态至关重要,如全静电负荷.
- 鉴定出差异甲基化基因和途径可能作为慢性压力和相关健康风险的生物标志物.
- 这项研究为开发针对压力相关疾病的有针对性的干预措施提供了基础.
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