Evidence map›Paper›PMID 31053162›Full record

ArticleEpigenetics & chromatin2019

Ezh2-dCas9 and KRAB-dCas9 enable engineering of epigenetic memory in a context-dependent manner.

Henriette O'Geen, Sofie L Bates, Sakereh S Carter, Karly A Nisson, Julian Halmai, Kyle D Fink, Suhn K Rhie, Peggy J Farnham, David J Segal

Open access · goldAbstract read
In one paragraph

Article in Epigenetics & chromatin, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed
6.9field-weighted citation impact, top 2% 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

106 citing papers in PubMed, 170 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Advances and clinical potential of epigenome editing.Cellular and molecular life sciences : CMLS · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Epigenetic editing: from concept to clinic.Nature reviews. Drug discovery · 2026
    Review
  11. Article
  12. Review
  13. Review
  14. Epigenome editing based treatment: Progresses and challenges.Molecular therapy : the journal of the American Society of Gene Therapy · 2026
    Review
  15. Article
  16. Article
  17. Review
  18. Reversing transgene silencing via targeted chromatin editing.bioRxiv : the preprint server for biology · 2025
    Article
  19. Article
  20. Article

46 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

9 authors at 2 institutions in 1 country.

Henriette O'GeenGenome Center and Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, 95616, USA. hhorvath@ucdavis.edu.ORCID 0000-0002-5569-7971
Sofie L BatesGenome Center and Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, 95616, USA.
Sakereh S CarterGenome Center and Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, 95616, USA.
Karly A NissonDepartment of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90089, USA.
Julian HalmaiDepartment of Neurology and Stem Cell Program, University of California, Sacramento, CA, 95817, USA.
Kyle D FinkDepartment of Neurology and Stem Cell Program, University of California, Sacramento, CA, 95817, USA.
Suhn K RhieDepartment of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90089, USA.
Peggy J FarnhamDepartment of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90089, USA.
David J SegalGenome Center and Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, 95616, USA.
University of California, Davis · USUniversity of Southern California · US

Funding

USC/NORRIS COMPREHENSIVE CANCER CENTER (CORE) SUPPORTP30CA014089 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI Fumito Ito · 1985 to 2026
$181.4M
Staff InvestigatorsP30CA093373 · NCI · UNIVERSITY OF CALIFORNIA DAVIS · PI Laura Marcu · 2002 to 2026
$84.9M
Prostate Cancer Risk EnhancersR01CA136924 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI COETZEE, GERHARD A, FARNHAM, PEGGY J · 2010 to 2019
$5.4M
CRISPR-based epigenetic modifiersR21CA204563 · NCI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI SEGAL, DAVID J · 2016 to 2017
$732k
Development of a novel promoter tagging technology to identify enhancer targetsR21HG009742 · NHGRI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI FARNHAM, PEGGY J · 2017 to 2018
$660k
Identification and Clinical Validation of Key Transcription Factor Isoforms Linked to Breast and Prostate Cancer Subgroups using Epigenetic TraitsK01CA229995 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI RHIE, SUHN KYONG · 2018 to 2020
$637k
UC Davis Shared Astrios Cell SorterS10OD018223 · OD · UNIVERSITY OF CALIFORNIA AT DAVIS · PI SHACKLETT, BARBARA L. · 2015 to 2015
$555k
Shared LSRII Cytometer Equipment Application - UC Davis Stem Cell ProgramS10RR026825 · NCRR · UNIVERSITY OF CALIFORNIA AT DAVIS · PI NOLTA, JAN A. · 2010 to 2010
$500k
EXTRAMURAL RESEARCH FACILITIES CONSTRUCTIONC06RR012088 · NCRR · UNIVERSITY OF CALIFORNIA DAVIS · PI CURRY, FITZ-ROY E · 1996 to 1996
–
Foundation for Angelman Syndrome Therapeutics FASTNCI NIH HHS K01 CA229995NCI NIH HHS P30 CA014089NCI NIH HHS P30 CA093373NCI NIH HHS R01 CA136924NCI NIH HHS R21 CA204563NCRR NIH HHS C06 RR012088NCRR NIH HHS S10 RR026825NHGRI NIH HHS R21 HG009742NIH HHS CA204563NIH HHS HG009742NIH HHS K01CA229995NIH HHS P30 CA014089NIH HHS R01CA136924NIH HHS S10 OD018223
6 · The paper itself

Abstract

backgroundRewriting of the epigenome has risen as a promising alternative to gene editing for precision medicine. In nature, epigenetic silencing can result in complete attenuation of target gene expression over multiple mitotic divisions. However, persistent repression has been difficult to achieve in a predictable manner using targeted systems.

resultsHere, we report that persistent epigenetic memory required both a DNA methyltransferase (DNMT3A-dCas9) and a histone methyltransferase (Ezh2-dCas9 or KRAB-dCas9). We demonstrate that the histone methyltransferase requirement can be locus specific. Co-targeting Ezh2-dCas9, but not KRAB-dCas9, with DNMT3A-dCas9 and DNMT3L induced long-term HER2 repression over at least 50 days (approximately 57 cell divisions) and triggered an epigenetic switch to a heterochromatic environment. An increase in H3K27 trimethylation and DNA methylation was stably maintained and accompanied by a sustained loss of H3K27 acetylation. Interestingly, substitution of Ezh2-dCas9 with KRAB-dCas9 enabled long-term repression at some target genes (e.g., SNURF) but not at HER2, at which H3K9me3 and DNA methylation were transiently acquired and subsequently lost. Off-target DNA hypermethylation occurred at many individual CpG sites but rarely at multiple CpGs in a single promoter, consistent with no detectable effect on transcription at the off-target loci tested. Conversely, robust hypermethylation was observed at HER2. We further demonstrated that Ezh2-dCas9 required full-length DNMT3L for maximal activity and that co-targeting DNMT3L was sufficient for persistent repression by Ezh2-dCas9 or KRAB-dCas9.

conclusionsThese data demonstrate that targeting different combinations of histone and DNA methyltransferases is required to achieve maximal repression at different loci. Fine-tuning of targeting tools is a necessity to engineer epigenetic memory at any given locus in any given cell type.

Indexed as

AnimalsCRISPR-Cas SystemsDNA (Cytosine-5-)-MethyltransferasesDNA MethylationDNA Methyltransferase 3AEnhancer of Zeste Homolog 2 ProteinEpigenesis, GeneticErb-b2 Receptor Tyrosine KinasesGene EditingGenetic EngineeringHCT116 CellsHistone MethyltransferasesHistonesHumansMicePromoter Regions, GeneticDNA (Cytosine-5-)-MethyltransferasesDNA Methyltransferase 3ADNMT3A protein, humanDnmt3a protein, mouseDNMT3L protein, humanEnhancer of Zeste Homolog 2 ProteinERBB2 protein, humanErb-b2 Receptor Tyrosine KinasesEZH2 protein, humanHistone MethyltransferasesHistonesRepressor ProteinsRNA, Guide, CRISPR-Cas SystemsTranscription FactorsZNF350 protein, humanChromatinCRISPR–dCas9DNA methylationEpigenetic memoryEpigeneticsEpigenome editingEzh2Gene expressionHistone methylationOff-target effects

Identifiers

PMID31053162
PMCPMC6498470
OpenAlexW2947427776

What OpenQuestion holds

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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.