Evidence map›Paper›PMID 21986577›Full record

ArticleActa pharmacologica Sinica2011

Hypomethylation of proximal CpG motif of interleukin-10 promoter regulates its expression in human rheumatoid arthritis.

Li-hong Fu, Chun-ling Ma, Bin Cong, Shu-jin Li, Hai-ying Chen, Jing-ge Zhang

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In one paragraph

Article in Acta pharmacologica Sinica, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

  1. Pooled it
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  3. Review
  4. Review
  5. Article
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  7. Review
  8. An ElevatedCurrent issues in molecular biology · 2024
    Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. The methylation profile ofFrontiers in immunology · 2023
    Article
  14. Review
  15. Article
  16. Article
  17. Contribution of Dysregulated DNA Methylation to Autoimmunity.International journal of molecular sciences · 2021
    Review
  18. Review
  19. Article
  20. DNA Methylation-Governed Gene Expression in Autoimmune Arthritis.International journal of molecular sciences · 2019
    Review
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

6 authors at 1 institution in 1 country.

Li-hong FuDepartment of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Hebei Medical University, Shijiazhuang, China.
Chun-ling Ma
Bin Cong
Shu-jin Li
Hai-ying Chen
Jing-ge Zhang
Hebei Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimThe promoter of human interleukin-10 (IL10), a cytokine crucial for suppressing inflammation and regulating immune responses, contains an interspecies-conserved sequence with CpG motifs. The aim of this study was to investigate whether methylation of CpG motifs could regulate the expression of IL10 in rheumatoid arthritis (RA).

methodsBioinformatic analysis was conducted to identify the interspecies-conserved sequence in human, macaque and mouse IL10 genes. Peripheral blood mononuclear cells (PBMCs) from 20 RA patients and 20 health controls were collected. The PBMCs from 6 patients were cultured in the presence or absence of 5-azacytidine (5 μmol/L). The mRNA and protein levels of IL10 were examined using RT-PCR and ELISA, respectively. The methylation of CpGs in the IL10 promoter was determined by pyrosequencing. Chromatin immunoprecipitation (ChIP) assays were performed to detect the cyclic AMP response element-binding protein (CREB)-DNA interactions.

resultsOne interspecies-conserved sequence was found within the IL10 promoter. The upstream CpGs at -408, -387, -385, and -355 bp were hypermethylated in PBMCs from both the RA patients and healthy controls. In contrast, the proximal CpG at -145 was hypomethylated to much more extent in the RA patients than in the healthy controls (P=0.016), which was correlated with higher IL10 mRNA and serum levels. In the 5-azacytidine-treated PBMCs, the CpG motifs were demethylated, and the expression levels of IL10 mRNA and protein was significantly increased. CHIP assays revealed increased phospho-CREB binding to the IL10 promoter.

conclusionThe methylation of the proximal CpGs in the IL10 promoter may regulate gene transcription in RA.

Indexed as

CpG IslandsDNA MethylationPromoter Regions, GeneticAdolescentAdultAnimalsArthritis, RheumatoidCells, CulturedFemaleGene Expression RegulationHumansInterleukin-10MaleMiceMiddle AgedYoung AdultInterleukin-10

Identifiers

PMID21986577
PMCPMC4002740
OpenAlexW1996922800

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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.