Global hypermethylation of intestinal epithelial cells is a hallmark feature of neonatal surgical necrotizing enterocolitis
Clinical Epigenetics, ISSN: 1868-7083, Vol: 12, Issue: 1, Page: 190
2020
- 14Citations
- 17Usage
- 22Captures
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Metrics Details
- Citations14
- Citation Indexes14
- 14
- Usage17
- Downloads15
- Abstract Views2
- Captures22
- Readers22
- 22
Article Description
Background: Necrotizing enterocolitis (NEC) remains one of the overall leading causes of death in premature infants, and the pathogenesis is unpredictable and not well characterized. The aim of our study was to determine the molecular phenotype of NEC via transcriptomic and epithelial cell-specific epigenomic analysis, with a specific focus on DNA methylation. Methods: Using laser capture microdissection, epithelial cell-specific methylation signatures were characterized by whole-genome bisulfite sequencing of ileal and colonic samples at the time of surgery for NEC and after NEC had healed at reanastomosis (n = 40). RNA sequencing was also performed to determine the transcriptomic profile of these samples, and a comparison was made to the methylome data. Results: We found that surgical NEC has a considerable impact on the epigenome by broadly increasing DNA methylation levels, although these effects are less pronounced in genomic regions associated with the regulation of gene expression. Furthermore, NEC-related DNA methylation signatures were influenced by tissue of origin, with significant differences being noted between colon and ileum. We also identified numerous transcriptional changes in NEC and clear associations between gene expression and DNA methylation. Conclusions: We have defined the intestinal epigenomic and transcriptomic signatures during surgical NEC, which will advance our understanding of disease pathogenesis and may enable the development of novel precision medicine approaches for NEC prediction, diagnosis and phenotyping.[Figure not available: see fulltext.].
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85097405206&origin=inward; http://dx.doi.org/10.1186/s13148-020-00983-6; http://www.ncbi.nlm.nih.gov/pubmed/33308304; https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-020-00983-6; https://digitalcommons.wustl.edu/oa_4/465; https://digitalcommons.wustl.edu/cgi/viewcontent.cgi?article=1459&context=oa_4; https://dx.doi.org/10.1186/s13148-020-00983-6
Springer Science and Business Media LLC
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