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DNA methylation dynamics of long noncoding RNA during human fetal development
Xin Li1,2, Yuanyuan Fu1, Yue Gao1
1College of Bioinformatics Science & Technology, Harbin Medical University, Harbin, 150081, China.
Epigenomics
|September 24, 2021
Summary
Dynamic DNA methylation in long noncoding RNA (lncRNA) promoters occurs during fetal development. These epigenetic changes in lncRNA methylomes are crucial for fetal tissue specification and development.
Area of Science:
- Epigenetics
- Developmental Biology
- Genomics
Background:
- Long noncoding RNAs (lncRNAs) play critical roles in gene regulation.
- DNA methylation is a key epigenetic mechanism influencing gene expression.
- Understanding dynamic epigenetic changes during fetal development is essential.
Purpose of the Study:
- To investigate dynamic DNA methylation changes at long noncoding RNA (lncRNA) promoters during fetal development.
- To characterize the lncRNA methylome landscape across different fetal tissues and gestational ages.
- To identify age-associated DNA methylation signatures in lncRNAs.
Main Methods:
- Analysis of variance (ANOVA) for identifying tissue-specific methylation sites.
- Tissue specificity index for validation of methylation sites.
- Elastic net method for identifying age-associated DNA methylation signatures.
- Characterization of the lncRNA methylome in four fetal tissue types across three gestational time points.
Main Results:
- The lncRNA methylome landscape was characterized, revealing tissue-specific and age-dependent methylation patterns.
- Higher levels of lncRNA methylation were associated with tissue differentiation.
- Age-associated DNA methylation signatures in lncRNAs were identified, suggesting their involvement in fetal development.
Conclusions:
- This study reveals novel insights into the dynamic nature of lncRNA methylomes during fetal development.
- Epigenetic regulation via DNA methylation of lncRNAs is critical for fetal tissue specification.
- lncRNA methylation patterns contribute to the developmental processes occurring in fetal tissues.
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