ArticleEpigenetics2017
Decoupling of DNA methylation and activity of intergenic LINE-1 promoters in colorectal cancer.
Article in Epigenetics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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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.
The trial behind it
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Who cites it
9 citing papers in PubMed, 9 citations in OpenAlex.
- LINE-1 Epigenetic Repression and Regulation of Immunity.Viruses · 2026Review
- DNA, RNA, and histone methylation regulation enzymes and their crosstalk in colorectal carcinogenesis and progression: a review of molecular mechanisms, clinical implications, and future perspectives.Cellular & molecular biology letters · 2025Review
- MyD88 inhibitor TJ-M2010-5 alleviates spleen impairment and inflammation by inhibiting the PI3K/miR-136-5p/AKT3 pathway in the early infection of Trichinella spiralis.Veterinary research · 2025Article
- Loss of SUV420H2-Dependent Chromatin Compaction Drives Right-Sided Colon Cancer Progression.Gastroenterology · 2023Article
- L1 chimeric transcripts are expressed in healthy brain and their deregulation in glioma follows that of their host locus.Human molecular genetics · 2022Article
- Article
- Effect of cold exposure and capsaicin on the expression of histone acetylation and Toll-like receptors in 1,2-dimethylhydrazine-induced colon carcinogenesis.Environmental science and pollution research international · 2021Article
- Many Different LINE-1 Retroelements Are Activated in Bladder Cancer.International journal of molecular sciences · 2020Article
- DNA methylation of intragenic CpG islands depends on their transcriptional activity during differentiation and disease.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
Corrections and comments
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Authors and funding
11 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hypomethylation of LINE-1 repeats in cancer has been proposed as the main mechanism behind their activation; this assumption, however, was based on findings from early studies that were biased toward young and transpositionally active elements. Here, we investigate the relationship between methylation of 2 intergenic, transpositionally inactive LINE-1 elements and expression of the LINE-1 chimeric transcript (LCT) 13 and LCT14 driven by their antisense promoters (L1-ASP). Our data from DNA modification, expression, and 5'RACE analyses suggest that colorectal cancer methylation in the regions analyzed is not always associated with LCT repression. Consistent with this, in HCT116 colorectal cancer cells lacking DNA methyltransferases DNMT1 or DNMT3B, LCT13 expression decreases, while cells lacking both DNMTs or treated with the DNMT inhibitor 5-azacytidine (5-aza) show no change in LCT13 expression. Interestingly, levels of the H4K20me3 histone modification are inversely associated with LCT13 and LCT14 expression. Moreover, at these LINE-1s, H4K20me3 levels rather than DNA methylation seem to be good predictor of their sensitivity to 5-aza treatment. Therefore, by studying individual LINE-1 promoters we have shown that in some cases these promoters can be active without losing methylation; in addition, we provide evidence that other factors (e.g., H4K20me3 levels) play prominent roles in their regulation.
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