Cited by 131Hematopoietic Stem Cell TransplantationEndoplasmic Reticulum Stress and DiseaseAcute Myeloid Leukemia Research

Integrated stress response activity marks stem cells in normal hematopoiesis and leukemia

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van Galen, Peter, Mbong, Nathan, Kreso, Antonia, Schoof, Erwin M., Wagenblast, Elvin, Ng, Stanley W.K., Krivdova, Gabriela, Jin, Liqing +2 more·2018·Cell Reports

Abstract

Lifelong maintenance of the blood system requires equilibrium between clearance of damaged hematopoietic stem cells (HSCs) and long-term survival of the HSC pool. Severe perturbations of cellular homeostasis result in rapid HSC loss to maintain clonal purity. However, normal homeostatic processes can also generate lower-level stress; how HSCs survive these conditions remains unknown. Here we show that the integrated stress response (ISR) is uniquely active in HSCs and facilitates their persistence. Activating transcription factor 4 (ATF4) mediates the ISR and is highly expressed in HSCs due to scarcity of the eIF2 translation initiation complex. Amino acid deprivation results in eIF2α phosphorylation-dependent upregulation of ATF4, promoting HSC survival. Primitive acute myeloid leukemia (AML) cells also display eIF2 scarcity and ISR activity marks leukemia stem cells (LSCs) in primary AML samples. These findings identify a link between the ISR and stem cell survival in the normal and leukemic contexts.

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Authors
van Galen, P., Mbong, N., Kreso, A., Schoof, E. M., Wagenblast, E., Ng, S. W. K., Krivdova, G., Jin, L., Nakauchi, H., & Dick, J. E.
Affiliations
  • University Health Network (CA)
  • Massachusetts General Hospital (US)
  • University of Copenhagen (DK)
  • Stanford Medicine (US)
Corresponding author
Dick, John E.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2018-10
Volume
25
Issue
5
Pages
1109-1117.e5
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2899451374
Cited by
131
References
42
Citations by year
2026: 15 · 2025: 18 · 2024: 18 · 2023: 15 · 2022: 23 · 2021: 16 · 2020: 18 · 2019: 7 · 2012: 1
FWCI
7.35
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by-nc-nd)
Funders
  • Leukemia and Lymphoma Society (5458-17)
  • European Molecular Biology Organization (ALTF 1595-2014)
  • European Commission (LTFCOFUND2013, GA-2013-609409)
  • Marie Curie Actions
  • Human Frontier Science Program
  • Canadian Institutes for Health Research
  • Canadian Cancer Society Research Institute
  • Terry Fox Foundation
  • Genome Canada through the Ontario Genomics Institute
  • Ontario Institute for Cancer Research
  • Canada Research Chair
  • Princess Margaret Hospital Foundation
  • Ontario Ministry of Health and Long Term Care
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Endoplasmic Reticulum Stress and Disease
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
Keywords
integrated stress response, hematopoietic stem cells, leukemia stem cells, acute myeloid leukemia, ATF4, eIF2α phosphorylation, amino acid starvation, stem cell homeostasis
MeSH terms
Animals, Cell Survival, Fetal Blood, Hematopoiesis, Hematopoietic Stem Cells, Humans, Leukemia, Male, Phosphorylation, Stress, Physiological, Valine, Eukaryotic Initiation Factor-2, Up-Regulation, Mice, SCID, Mice, Inbred NOD, Genes, Reporter, Cytoprotection, Multipotent Stem Cells, Activating Transcription Factor 4

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