Genomewide DNA methylation regulation analysis of long noncoding RNAs in glioblastoma.
Int J Mol Med
; 46(1): 224-238, 2020 Jul.
Article
in En
| MEDLINE
| ID: mdl-32319552
ABSTRACT
Glioblastoma (GBM) is a malignant brain tumor associated with high mortality. Long noncoding RNAs (lncRNAs) are increasingly being recognized as its modulators. However, it remains mostly unexplored how lncRNAs are mediated by DNA methylation in GBM. The present study integrated multiomics data to analyze the epigenetic dysregulation of lncRNAs in GBM. Widely aberrant methylation in the lncRNA promoters was observed, and the lncRNA promoters exhibited a more hypomethylated pattern in GBM. By combining transcriptional datasets, it was possible identify the lncRNAs whose transcriptional changes might be associated with the aberrant promoter methylation. Then, a methylationmediated lncRNA regulatory network and functional enrichment analysis of aberrantly methylated lncRNAs showed that lncRNAs with different methylation patterns were involved in diverse GBM progressionrelated biological functions and pathways. Specifically, four lncRNAs whose increased expression may be regulated by the corresponding promoter hypomethylation were evaluated to have an excellent diagnostic effect and clinical prognostic value. Finally, through the construction of drugtarget association networks, the present study identified potential therapeutic targets and smallmolecule drugs for GBM treatment. The present study provides novel insights for understanding the regulation of lncRNAs by DNA methylation and developing cancer biomarkers in GBM.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Glioblastoma
/
DNA Methylation
/
RNA, Long Noncoding
Limits:
Humans
Language:
En
Journal:
Int J Mol Med
Journal subject:
BIOLOGIA MOLECULAR
/
GENETICA MEDICA
Year:
2020
Document type:
Article