Evidence map›Paper›PMID 15613316›Full record

ArticleJournal of virology2005

CpG methylation directly regulates transcriptional activity of the human endogenous retrovirus family HERV-K(HML-2).

Laurence Lavie, Milena Kitova, Esther Maldener, Eckart Meese, Jens Mayer

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed
12.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

111 citing papers in PubMed, 218 citations in OpenAlex.

  1. Article
  2. Review
  3. Aberrant Expression of Human Endogenous Retroviruses andInternational journal of molecular sciences · 2026
    Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Review
  9. Review
  10. Predicting Tumor Antigens Using the LENS Workflow Through RAFT.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  11. Review
  12. Article
  13. Review
  14. The Molecular Impacts of Retrotransposons in Development and Diseases.International journal of molecular sciences · 2023
    Review
  15. Article
  16. Air pollution and human endogenous retrovirus methylation in the school inner-city asthma intervention study.Toxicological sciences : an official journal of the Society of Toxicology · 2023
    Article
  17. Review
  18. Review
  19. Endogenous Retroviruses as Modulators of Innate Immunity.Pathogens (Basel, Switzerland) · 2023
    Review
  20. Human Endogenous Retroviruses in Diseases.Sub-cellular biochemistry · 2023
    Article

51 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Laurence LavieDepartment of Human Genetics, Building 60, University of Saarland, Medical Faculty, 66421 Hamburg, Germany. jens.mayer@uniklinik-saarland.de.
Milena Kitova
Esther Maldener
Eckart Meese
Jens Mayer
Saarland University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A significant proportion of the human genome consists of stably inherited retroviral sequences. Most human endogenous retroviruses (HERVs) became defective over time. The HERV-K(HML-2) family is exceptional because of its coding capacity and the possible involvement in germ cell tumor (GCT) development. HERV-K(HML-2) transcription is strongly upregulated in GCTs. However, regulation of HERV-K(HML-2) transcription remains poorly understood. We investigated in detail the role of CpG methylation on the transcriptional activity of HERV-K(HML-2) long terminal repeats (LTRs). We find that CpG sites in various HERV-K(HML-2) proviral 5' LTRs are methylated at different levels in the cell line Tera-1. Methylation levels correlate with previously observed transcriptional activities of these proviruses. CpG-mediated silencing of HERV-K(HML-2) LTRs is further corroborated by transcriptional inactivity of in vitro-methylated 5' LTR reporter plasmids. However, CpG methylation levels do not solely regulate HERV-K(HML-2) 5' LTR activity, as evidenced by different LTR activities in the cell line T47D. A significant number of mutated CpG sites in evolutionary old HERV-K(HML-2) 5' LTRs suggests that CpG methylation had already silenced HERV-K(HML-2) proviruses millions of years ago. Direct silencing of HERV-K(HML-2) expression by CpG methylation enlightens upregulated HERV-K(HML-2) expression in usually hypomethylated GCT tissue.

Indexed as

DNA MethylationTerminal Repeat SequencesTranscription, GeneticCell Line, TumorCpG IslandsEndogenous RetrovirusesHumansPromoter Regions, Genetic

Identifiers

PMID15613316
PMCPMC538560
OpenAlexW2171727559

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.