血液和脂肪组织DNA甲基化在成年人出生早产,出生体重非常低 - 一个兄弟姐妹比较研究研究
Helena H Hauta-Alus1,2,3, Justiina Ronkainen4, Juho Kuula2,3,5
1Clinical Medicine Research Unit, MRC Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.
Epigenomics
|November 17, 2025
概括
出生时体重非常低 (VLBW) 的成年人显示脂肪组织的长期表观遗传变化,特别是与脂质代谢和神经发育相关的基因. 这些DNA甲基化差异凸显了对VLBW个体的潜在长期健康影响.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 人类发展 人类发展
- 代谢健康 代谢健康
背景情况:
- 过早分娩和出生时体重非常低 (VLBW) 与健康不良结果的风险增加有关.
- 假设表观遗传修饰,如DNA甲基化 (DNAm),可以调解这些风险.
- 了解VLBW成人的特定组织DNAm模式对于确定长期健康后果至关重要.
研究的目的:
- 调查出生时体重非常低 (VLBW) 的成年人和他们的兄弟姐妹之间DNA甲基化 (DNAm) 的差异.
- 为了比较血液和脂肪组织中的DNAm模式,以确定特定组织的表观遗传修饰.
- 探索受这些潜在DNAm差异影响的生物途径.
主要方法:
- 该研究包括75名患有VLBW的早产成年人和73名兄弟对照.
- 在血液和脂肪组织中CpG位点的DNA甲基化使用Illumina EPIC 850K阵列进行了评估.
- 途径分析使用QIAGEN聪明途径分析 (IPA) 进行.
主要成果:
- 血液样本中没有观察到DNA甲基化的显著差异.
- 在脂肪组织中,458个CpG位点显示了VLBW成人和兄弟姐妹之间的差异甲基化 (FDR p <0.05).
- 不同的甲基化位点与参与脂质代谢 (例如FADS2) 和神经发育 (例如KIF26A) 的基因相关,并富含81种生物通路.
结论:
- 与他们的兄弟姐妹相比,VLBW成年人表现出明显的,组织特定的DNA甲基化模式.
- 这些表观遗传变化集中在对脂质代谢,神经发育和心脏代谢调节至关重要的途径中.
- 这些发现表明,出生于VLBW的个体存在持久的,组织特异的表观遗传修饰,可能会影响长期健康.
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