Evidence map›Paper›PMID 32087607›Full record

ArticleAging cell2020

Heterochromatin loss as a determinant of progerin-induced DNA damage in Hutchinson-Gilford Progeria.

Alexandre Chojnowski, Peh Fern Ong, Mattheus Xing Rong Foo, David Liebl, Louis-Peter Hor, Colin L Stewart, Oliver Dreesen

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.3field-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

33 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Lamin A/C loss promotes R-loop-mediated genomic instability and poor survival in small-cell lung cancer.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Article
  9. Review
  10. Mechanisms for assembly of the nucleoplasmic reticulum.Cellular and molecular life sciences : CMLS · 2024
    Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Review
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  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

7 authors at 3 institutions in 1 country.

Alexandre ChojnowskiDevelopmental and Regenerative Biology, Institute of Medical Biology, Singapore, Singapore.
Peh Fern OngCell Ageing, Skin Research Institute Singapore, Singapore, Singapore.
Mattheus Xing Rong FooCell Ageing, Skin Research Institute Singapore, Singapore, Singapore.
David LieblA*STAR Microscopy Platform, Singapore, Singapore.
Louis-Peter HorCell Ageing, Skin Research Institute Singapore, Singapore, Singapore.
Colin L StewartDevelopmental and Regenerative Biology, Institute of Medical Biology, Singapore, Singapore.
Oliver DreesenCell Ageing, Skin Research Institute Singapore, Singapore, Singapore.ORCID 0000-0003-1148-3557
National Skin Centre · SGInstitute of Medical Biology · SGAgency for Science, Technology and Research · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hutchinson-Gilford progeria is a premature aging syndrome caused by a truncated form of lamin A called progerin. Progerin expression results in a variety of cellular defects including heterochromatin loss, DNA damage, impaired proliferation and premature senescence. It remains unclear how these different progerin-induced phenotypes are temporally and mechanistically linked. To address these questions, we use a doxycycline-inducible system to restrict progerin expression to different stages of the cell cycle. We find that progerin expression leads to rapid and widespread loss of heterochromatin in G1-arrested cells, without causing DNA damage. In contrast, progerin triggers DNA damage exclusively during late stages of DNA replication, when heterochromatin is normally replicated, and preferentially in cells that have lost heterochromatin. Importantly, removal of progerin from G1-arrested cells restores heterochromatin levels and results in no permanent proliferative impediment. Taken together, these results delineate the chain of events that starts with progerin expression and ultimately results in premature senescence. Moreover, they provide a proof of principle that removal of progerin from quiescent cells restores heterochromatin levels and their proliferative capacity to normal levels.

Indexed as

Aging, PrematureCell ProliferationCells, CulturedCellular SenescenceDNA DamageDNA ReplicationDoxorubicinFibroblastsG1 Phase Cell Cycle CheckpointsGene ExpressionHeterochromatinHumansLamin Type AMicroscopy, Electron, TransmissionMicroscopy, FluorescenceProgeriaDoxorubicinHeterochromatinLamin Type Aprelamin ADNA damageheterochromatinHGPSlamin Aprogerinsenescence

Identifiers

PMID32087607
PMCPMC7059134
OpenAlexW3007691847

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.