Cited by 100Hematopoietic Stem Cell TransplantationHeat shock proteins researchGenetics, Aging, and Longevity in Model Organisms

Hsf1 promotes hematopoietic stem cell fitness and proteostasis in response to ex vivo culture stress and aging

Open access
Kruta, Miriama, Sunshine, Mary Jean, Chua, Bernadette A., Fu, Yunpeng, Chawla, Ashu, Dillingham, Christopher H., Hidalgo San Jose, Lorena, De Jong, Bijou +2 more·2021·Cell Stem Cell

Abstract

Maintaining proteostasis is key to resisting stress and promoting healthy aging. Proteostasis is necessary to preserve stem cell function, but little is known about the mechanisms that regulate proteostasis during stress in stem cells, and whether disruptions of proteostasis contribute to stem cell aging is largely unexplored. We determined that ex-vivo-cultured mouse and human hematopoietic stem cells (HSCs) rapidly increase protein synthesis. This challenge to HSC proteostasis was associated with nuclear accumulation of Hsf1, and deletion of Hsf1 impaired HSC maintenance ex vivo. Strikingly, supplementing cultures with small molecules that enhance Hsf1 activation partially suppressed protein synthesis, rebalanced proteostasis, and supported retention of HSC serial reconstituting activity. Although Hsf1 was dispensable for young adult HSCs in vivo, Hsf1 deficiency increased protein synthesis and impaired the reconstituting activity of middle-aged HSCs. Hsf1 thus promotes proteostasis and the regenerative activity of HSCs in response to culture stress and aging.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.stem.2021.07.009

Cites

97 of 97 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The transcription factor HSF1, which promotes protein homeostasis by inducing many chaperone proteins, is necessary for protein homeostasis in HSCs during ageing.

    “The transcription factor HSF1, which promotes protein homeostasis by inducing many chaperone proteins, is necessary for protein homeostasis in HSCs during ageing113.”

    From Ageing and rejuvenation of tissue stem cells and their niches (2023) · cites this paper as [113]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kruta, M., Sunshine, M. J., Chua, B. A., Fu, Y., Chawla, A., Dillingham, C. H., Hidalgo San Jose, L., De Jong, B., Zhou, F. J., & Signer, R. A. J.
Affiliations
  • University of California San Diego (US)
  • La Jolla Institute for Immunology (US)
Corresponding author
Signer, Robert A.J.
Venue
Cell Stem Cell
Publisher
Elsevier BV
Published
2021-11
Volume
28
Issue
11
Pages
1950-1965.e6
ISSN
  • 1875-9777 (ISSN-L)
  • 1934-5909
OpenAlex
W3191440760
Cited by
100
References
97
Citations by year
2026: 14 · 2025: 26 · 2024: 15 · 2023: 27 · 2022: 16 · 2021: 2
FWCI
9.80
Type
journal article
Language
en
Open access
Locations
  • Cell stem cell (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
  • American Society of Hematology
  • Leukemia and Lymphoma Society
  • National Institutes of Health
  • University of California, San Diego
  • National Cancer Institute (P30CA023100, S10 RR027366)
  • Mark Foundation For Cancer Research
  • V Foundation for Cancer Research (V2017-003)
  • National Institute of Diabetes and Digestive and Kidney Diseases (8025-20, R01DK116951, R01DK124775)
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
HSF1, hematopoietic stem cells, proteostasis, protein synthesis, stem cell aging, HSF1 activation, nuclear accumulation
MeSH terms
Proteostasis, Aging, Animals, Hematopoietic Stem Cells, Transcription Factors, Cellular Senescence, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review