Evidence map›Paper›PMID 26177506›Full record

ArticlePloS one2015

Differences in the Epigenetic Regulation of Cytochrome P450 Genes between Human Embryonic Stem Cell-Derived Hepatocytes and Primary Hepatocytes.

Han-Jin Park, Young-Jun Choi, Ji Woo Kim, Hang-Suk Chun, Ilkyun Im, Seokjoo Yoon, Yong-Mahn Han, Chang-Woo Song, Hyemin Kim

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
10.8field-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

39 citing papers in PubMed, 77 citations in OpenAlex.

  1. Review
  2. Article
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  4. Integrating Molecular Testing With Clinical Criteria and Histopathology Improves Diagnostic Precision in Immune-Mediated Liver Diseases.Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc · 2025
    Article
  5. Review
  6. Article
  7. Review
  8. Age-Dependent Changes in Cytochrome P450 Abundance and Composition in Human Liver.Drug metabolism and disposition: the biological fate of chemicals · 2024
    Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Cytochrome P450 Enzymes and Drug Metabolism in Humans.International journal of molecular sciences · 2021
    Review
  16. Article
  17. Article
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  19. Review
  20. 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

9 authors at 3 institutions in 1 country.

Han-Jin ParkDepartment of Biological Sciences and Center for Stem Cell Differentiation, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Republic of Korea; Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305-343, Republic of Korea.
Young-Jun ChoiDepartment of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305-343, Republic of Korea; Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon, 303-333, Republic of Korea.
Ji Woo KimDepartment of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305-343, Republic of Korea.
Hang-Suk ChunDepartment of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305-343, Republic of Korea.
Ilkyun ImDepartment of Biological Sciences and Center for Stem Cell Differentiation, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Republic of Korea.
Seokjoo YoonDepartment of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305-343, Republic of Korea; Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon, 303-333, Republic of Korea.
Yong-Mahn HanDepartment of Biological Sciences and Center for Stem Cell Differentiation, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Republic of Korea.
Chang-Woo SongDepartment of Inhalation Research, Korea Institute of Toxicology, Jeollabuk-do, 580-185, Republic of Korea; Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon, 303-333, Republic of Korea.
Hyemin KimDepartment of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305-343, Republic of Korea.
Korea Institute of Toxicology · KRKorea Advanced Institute of Science and Technology · KRKorea University of Science and Technology · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human pluripotent stem cell-derived hepatocytes have the potential to provide in vitro model systems for drug discovery and hepatotoxicity testing. However, these cells are currently unsuitable for drug toxicity and efficacy testing because of their limited expression of genes encoding drug-metabolizing enzymes, especially cytochrome P450 (CYP) enzymes. Transcript levels of major CYP genes were much lower in human embryonic stem cell-derived hepatocytes (hESC-Hep) than in human primary hepatocytes (hPH). To verify the mechanism underlying this reduced expression of CYP genes, including CYP1A1, CYP1A2, CYP1B1, CYP2D6, and CYP2E1, we investigated their epigenetic regulation in terms of DNA methylation and histone modifications in hESC-Hep and hPH. CpG islands of CYP genes were hypermethylated in hESC-Hep, whereas they had an open chromatin structure, as represented by hypomethylation of CpG sites and permissive histone modifications, in hPH. Inhibition of DNA methyltransferases (DNMTs) during hepatic maturation induced demethylation of the CpG sites of CYP1A1 and CYP1A2, leading to the up-regulation of their transcription. Combinatorial inhibition of DNMTs and histone deacetylases (HDACs) increased the transcript levels of CYP1A1, CYP1A2, CYP1B1, and CYP2D6. Our findings suggest that limited expression of CYP genes in hESC-Hep is modulated by epigenetic regulatory factors such as DNMTs and HDACs.

Indexed as

Epigenesis, GeneticProtein Processing, Post-TranslationalCell DifferentiationCell LineChromatinCpG IslandsCytochrome P-450 CYP1A1Cytochrome P-450 CYP1A2Cytochrome P-450 CYP1B1Cytochrome P-450 CYP2D6Cytochrome P-450 CYP2E1DNA MethylationDNA Modification MethylasesHepatocytesHistone DeacetylasesHistonesChromatinCYP1A1 protein, humanCYP1A2 protein, humanCYP1B1 protein, humanCytochrome P-450 CYP1A1Cytochrome P-450 CYP1A2Cytochrome P-450 CYP1B1Cytochrome P-450 CYP2D6Cytochrome P-450 CYP2E1DNA Modification MethylasesHistone DeacetylasesHistones

Identifiers

PMID26177506
PMCPMC4503736
OpenAlexW897821268

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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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.