Evidence map›Paper›PMID 38757355›Full record

ArticleAging cell2024

The integrated stress response promotes neural stem cell survival under conditions of mitochondrial dysfunction in neurodegeneration.

Mohamed Ariff Iqbal, Maria Bilen, Yubing Liu, Vanessa Jabre, Bensun C Fong, Imane Chakroun, Smitha Paul, Jingwei Chen, Steven Wade, Michel Kanaan and 3 more

Abstract read
In one paragraph

Article in Aging cell, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
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

15 citing papers in PubMed.

  1. The role of ATF4 in neurons under mitochondrial stress.NAR genomics and bioinformatics · 2026
    Article
  2. Article
  3. Review
  4. Review
  5. Review
  6. Article
  7. The Yin-Yang of Stress and Senescence: Integrated Stress Response and SASP Crosstalk in Stem Cell Fate, Regeneration, and Disease.Biocell : official journal of the Sociedades Latinoamericanas de Microscopia Electronica ... et. al · 2026
    Article
  8. Review
  9. Hallmarks of stem cell aging.Cell stem cell · 2025
    Review
  10. Review
  11. Review
  12. Review
  13. Review
  14. Article
  15. 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

13 authors.

Mohamed Ariff IqbalDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.ORCID 0000-0002-5094-0717
Maria BilenDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
Yubing LiuDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
Vanessa JabreDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
Bensun C FongDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
Imane ChakrounDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
Smitha PaulDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.ORCID 0000-0001-9516-7353
Jingwei ChenDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
Steven WadeDepartment of Biochemistry, Microbiology and Immunology, Center for Neuromuscular Disease (CNMD), Ottawa Institute of Systems Biology (OISB), Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.
Michel KanaanDepartment of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology (OISB), Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.
Mary-Ellen HarperDepartment of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology (OISB), Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.ORCID 0000-0003-3864-5886
Mireille KhachoDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
Ruth S SlackDepartment of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.

Funding

Canada Research Chair (CRC)CIHR 438989CIHR GR000324(154309)Mito2i fellowship
6 · The paper itself

Abstract

Impaired mitochondrial function is a hallmark of aging and a major contributor to neurodegenerative diseases. We have shown that disrupted mitochondrial dynamics typically found in aging alters the fate of neural stem cells (NSCs) leading to impairments in learning and memory. At present, little is known regarding the mechanisms by which neural stem and progenitor cells survive and adapt to mitochondrial dysfunction. Using Opa1-inducible knockout as a model of aging and neurodegeneration, we identify a decline in neurogenesis due to impaired stem cell activation and progenitor proliferation, which can be rescued by the mitigation of oxidative stress through hypoxia. Through sc-RNA-seq, we identify the ATF4 pathway as a critical mechanism underlying cellular adaptation to metabolic stress. ATF4 knockdown in Opa1-deficient NSCs accelerates cell death, while the increased expression of ATF4 enhances proliferation and survival. Using a Slc7a11 mutant, an ATF4 target, we show that ATF4-mediated glutathione production plays a critical role in maintaining NSC survival and function under stress conditions. Together, we show that the activation of the integrated stress response (ISR) pathway enables NSCs to adapt to metabolic stress due to mitochondrial dysfunction and metabolic stress and may serve as a therapeutic target to enhance NSC survival and function in aging and neurodegeneration.

Indexed as

Cell SurvivalMitochondriaNeural Stem CellsActivating Transcription Factor 4AnimalsMiceNeurodegenerative DiseasesOxidative StressStress, PhysiologicalActivating Transcription Factor 4adult neurogenesisHypoxiaintergrated stress responsemetabolic adaptationmitochondrial dynamicsneurodegenerationOpa1

Identifiers

PMID38757355
PMCPMC11258489

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.