Evidence map›Paper›PMID 37082862›Full record

ArticleThe EMBO journal2023

Evidence for low nanocompaction of heterochromatin in living embryonic stem cells.

Claire Dupont, Dhanvantri Chahar, Antonio Trullo, Thierry Gostan, Caroline Surcis, Charlotte Grimaud, Daniel Fisher, Robert Feil, David Llères

Open access · hybridAbstract read
In one paragraph

Article in The EMBO journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

12 citing papers in PubMed, 19 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Multi-Scale Imaging of the Dynamic Organization of Chromatin.International journal of molecular sciences · 2023
    Review
  10. Article
  11. Article
  12. 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 1 institution in 1 country.

Claire DupontInstitute of Molecular Genetics of Montpellier (IGMM), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0002-8492-4985
Dhanvantri ChaharInstitute of Molecular Genetics of Montpellier (IGMM), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0002-7623-7018
Antonio TrulloInstitute of Molecular Genetics of Montpellier (IGMM), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0001-7560-3859
Thierry GostanInstitute of Molecular Genetics of Montpellier (IGMM), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0002-1087-8015
Caroline SurcisInstitute of Molecular Genetics of Montpellier (IGMM), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0001-8056-2457
Charlotte GrimaudInstitute of Human Genetics (IGH), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0001-7944-5931
Daniel FisherInstitute of Molecular Genetics of Montpellier (IGMM), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0002-0822-3482
Robert FeilInstitute of Molecular Genetics of Montpellier (IGMM), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0002-5671-5860
David LlèresInstitute of Molecular Genetics of Montpellier (IGMM), CNRS, University of Montpellier, Montpellier, France.ORCID 0000-0003-1630-8758
Centre National de la Recherche Scientifique · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Despite advances in the identification of chromatin regulators and genome interactions, the principles of higher-order chromatin structure have remained elusive. Here, we applied FLIM-FRET microscopy to analyse, in living cells, the spatial organisation of nanometre range proximity between nucleosomes, which we called "nanocompaction." Both in naive embryonic stem cells (ESCs) and in ESC-derived epiblast-like cells (EpiLCs), we find that, contrary to expectations, constitutive heterochromatin is much less compacted than bulk chromatin. The opposite was observed in fixed cells. HP1α knockdown increased nanocompaction in living ESCs, but this was overridden by loss of HP1β, indicating the existence of a dynamic HP1-dependent low compaction state in pluripotent cells. Depletion of H4K20me2/3 abrogated nanocompaction, while increased H4K20me3 levels accompanied the nuclear reorganisation during EpiLCs induction. Finally, the knockout of the nuclear cellular-proliferation marker Ki-67 strongly reduced both interphase and mitotic heterochromatin nanocompaction in ESCs. Our data indicate that, contrary to prevailing models, heterochromatin is not highly compacted at the nanoscale but resides in a dynamic low nanocompaction state that depends on H4K20me2/3, the balance between HP1 isoforms, and Ki-67.

Indexed as

Chromosomal Proteins, Non-HistoneHeterochromatinChromatinEmbryonic Stem CellsKi-67 AntigenChromatinChromosomal Proteins, Non-HistoneHeterochromatinKi-67 Antigenchromatin organisationembryonic stem cellsFLIM-FRETheterochromatinHP1

Identifiers

PMID37082862
PMCPMC10267699
OpenAlexW4366602656

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.