ArticleInternational journal of molecular sciences2025
Multi-Cohort Exploration of Repetitive Element Transcription and DNA Methylation in Human Steatotic Liver Disease.
Article in International journal of molecular sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Extrachromosomal Circular DNA and Transposable Elements in Type 2 Diabetes.International journal of molecular sciences · 2025Review
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Authors and funding
13 authors.
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Abstract
Transposable elements (TEs) make up around half of the human genome. Their transcription is repressed in most somatic cells to maintain genome integrity and function. The repression is chiefly maintained by a combination of epigenetic modifications such as DNA methylation and histone modifications. However, recent research suggests that liver steatosis is associated with extensive changes to the hepatocyte epigenome. Furthermore, studies in mice have reported diet- and drug-induced changes to TE transcript levels in liver. The confirmation of these effects in human liver has not previously been undertaken. Here, we examined TE transcription in liver tissue from three patient cohorts with histologically confirmed liver steatosis caused by alcohol consumption or metabolic dysfunction. The quantitation of the number of transcripts with TE-homology in RNA-Seq data from a cohort of 90 bariatric surgery patients with metabolic dysfunction-associated steatotic liver disease (MASLD) revealed a trend for the reduction in TEs of all classes due to increasing steatosis, but no effect of fibrosis. This pattern was also present in a separate cohort of MASLD and HCC patients, as RT-qPCR also showed a reduction in Alu element transcripts in advanced steatosis, but again, no effect of fibrosis. Contrastingly, in a cohort of alcohol-related liver disease patients, the reduction in LINE-1 transcripts was associated with either increased steatosis or increased fibrosis. Moreover, the examination of LINE-1 DNA methylation levels in the MASLD and HCC cohort indicated that DNA methylation was also negatively associated with LINE-1 transcription in MASLD. This study suggests that TE transcript levels in human liver are slightly reduced by steatosis, that DNA methylation is an influential epigenetic regulator of LINE-1 retrotransposon transcription in steatosis, and that Alu transcript levels in background liver could be a new biomarker for HCC in cirrhotic and non-cirrhotic MASLD.
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