Evidence map›Paper›PMID 34162976›Full record

ArticleScientific reports2021

Progerin impairs 3D genome organization and induces fragile telomeres by limiting the dNTP pools.

Anna Kychygina, Marina Dall'Osto, Joshua A M Allen, Jean-Charles Cadoret, Vincent Piras, Hilda A Pickett, Laure Crabbe

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.0field-weighted citation impact, top 12% 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

21 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
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  3. STING causes replication stress and nascent DNA degradation via SAMHD1.bioRxiv : the preprint server for biology · 2026
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  17. 3D genome organization.Scientific reports · 2022
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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 2 institutions in 2 countries.

Anna KychyginaMolecular, Cellular and Developmental Biology Department (MCD), Centre de Biologie Integrative (CBI), CNRS, UPS, University of Toulouse, 31062, Toulouse, France.
Marina Dall'OstoMolecular, Cellular and Developmental Biology Department (MCD), Centre de Biologie Integrative (CBI), CNRS, UPS, University of Toulouse, 31062, Toulouse, France.
Joshua A M AllenTelomere Length Regulation Unit, Faculty of Medicine and Health, Children's Medical Research Institute, University of Sydney, Westmead, NSW, 2145, Australia.
Jean-Charles CadoretUniversité de Paris, CNRS, Institute Jacques Monod , F-75006, Paris, France.
Vincent PirasMolecular, Cellular and Developmental Biology Department (MCD), Centre de Biologie Integrative (CBI), CNRS, UPS, University of Toulouse, 31062, Toulouse, France.
Hilda A PickettTelomere Length Regulation Unit, Faculty of Medicine and Health, Children's Medical Research Institute, University of Sydney, Westmead, NSW, 2145, Australia.
Laure CrabbeMolecular, Cellular and Developmental Biology Department (MCD), Centre de Biologie Integrative (CBI), CNRS, UPS, University of Toulouse, 31062, Toulouse, France. laure.crabbe@univ-tlse3.fr.ORCID 0000-0001-7764-3600
Centre National de la Recherche Scientifique · FRThe University of Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chromatin organization within the nuclear volume is essential to regulate many aspects of its function and to safeguard its integrity. A key player in this spatial scattering of chromosomes is the nuclear envelope (NE). The NE tethers large chromatin domains through interaction with the nuclear lamina and other associated proteins. This organization is perturbed in cells from Hutchinson-Gilford progeria syndrome (HGPS), a genetic disorder characterized by premature aging features. Here, we show that HGPS-related lamina defects trigger an altered 3D telomere organization with increased contact sites between telomeres and the nuclear lamina, and an altered telomeric chromatin state. The genome-wide replication timing signature of these cells is perturbed, with a shift to earlier replication for regions that normally replicate late. As a consequence, we detected a higher density of replication forks traveling simultaneously on DNA fibers, which relies on limiting cellular dNTP pools to support processive DNA synthesis. Remarkably, increasing dNTP levels in HGPS cells rescued fragile telomeres, and improved the replicative capacity of the cells. Our work highlights a functional connection between NE dysfunction and telomere homeostasis in the context of premature aging.

Indexed as

AdultAnimalsCells, CulturedCellular SenescenceChromatinDeoxyribonucleotidesDNA DamageDNA ReplicationFibroblastsGenes, ReporterGreen Fluorescent ProteinsHistone CodeHumansInfant, NewbornLamin Type ALamin Type BChromatinDeoxyribonucleotidesenhanced green fluorescent proteinGreen Fluorescent ProteinsLamin Type ALamin Type BLmna protein, mouseprelamin ARecombinant Fusion Proteins

Identifiers

PMID34162976
PMCPMC8222272
OpenAlexW3173164714

What OpenQuestion holds

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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.