Evidence map›Paper›PMID 34687484›Full record

ArticleAging cell2021

Changing and stable chromatin accessibility supports transcriptional overhaul during neural stem cell activation and is altered with age.

Sun Y Maybury-Lewis, Abigail K Brown, Mitchell Yeary, Anna Sloutskin, Shleshma Dhakal, Tamar Juven-Gershon, Ashley E Webb

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.5field-weighted citation impact, top 17% 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

17 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
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  6. Review
  7. Age-dependent regenerative mechanisms in the brain.Biochemical Society transactions · 2024
    Review
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  14. Review
  15. Article
  16. Article
  17. The eroding chromatin landscape of aging stem cells.Translational medicine of aging · 2020
    Article
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 2 countries.

Sun Y Maybury-LewisDepartment of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA.ORCID 0000-0003-2126-995X
Abigail K BrownDepartment of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA.
Mitchell YearyDepartment of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA.
Anna SloutskinThe Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel.
Shleshma DhakalDepartment of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA.
Tamar Juven-GershonThe Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel.
Ashley E WebbDepartment of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA.
Brown University · USBar-Ilan University · ILAllen Institute for Brain Science · US

Funding

Predoctoral Training in the Molecular Biology of AgingT32AG041688 · NIA · BROWN UNIVERSITY · PI NICOLA NERETTI, John M Sedivy · 2012 to 2026
$3.5M
Molecular mechanisms underlying the preservation of neural stem cell quiescence during agingR01AG053268 · NIA · BUCK INSTITUTE FOR RESEARCH ON AGING · PI WEBB, ASHLEY E · 2017 to 2025
$3.2M
NIA NIH HHS 5T32AG041688NIA NIH HHS R01 AG053268NIA NIH HHS T32 AG041688NIH HHS AG053288
6 · The paper itself

Abstract

Neural stem cells (NSCs) in the adult and aged brain are largely quiescent, and require transcriptional reprogramming to re-enter the cell cycle. However, the mechanisms underlying these changes and how they are altered with age remain undefined. Here, we identify the chromatin accessibility differences between primary neural stem/progenitor cells in quiescent and activated states. These distinct cellular states exhibit shared and unique chromatin profiles, both associated with gene regulation. Accessible chromatin states specific to activation or quiescence are active enhancers bound by key pro-neurogenic and quiescence factors. In contrast, shared sites are enriched for core promoter elements associated with translation and metabolism. Unexpectedly, through integrated analysis, we find that many sites that become accessible during NSC activation are linked to gene repression and associated with pro-quiescence factors, revealing a novel mechanism that may preserve quiescence re-entry. Furthermore, we report that in aged NSCs, chromatin regions associated with metabolic and transcriptional functions bound by key pro-quiescence transcription factors lose accessibility, suggesting a novel mechanism of age-associated NSC dysfunction. Together, our findings reveal how accessible chromatin states regulate the transcriptional switch between NSC quiescence and activation, and how this switch is affected with age.

Indexed as

Transcriptional ActivationAgingAnimalsBrainCell CycleCell DifferentiationCell ProliferationCells, CulturedCellular SenescenceChromatinChromatin Immunoprecipitation SequencingGene Expression RegulationGene Regulatory NetworksHistonesMiceNeural Stem CellsChromatinhistone H3 trimethyl Lys4Histonesagingchromatin accessibilityneural stem cellsstem cell activation

Identifiers

PMID34687484
PMCPMC8590101
OpenAlexW3205245111

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.