Cited by 299Hematopoietic Stem Cell TransplantationMesenchymal stem cell researchBlood disorders and treatments

Inflammatory exposure drives long-lived impairment of hematopoietic stem cell self-renewal activity and accelerated aging

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Bogeska, Ruzhica, Mikecin, Ana-Matea, Kaschutnig, Paul, Fawaz, Malak, Büchler-Schäff, Marleen, Le, Duy, Ganuza, Miguel, Vollmer, Angelika +28 more·2022·Cell Stem Cell

Published version of a preprint

Abstract

Hematopoietic stem cells (HSCs) mediate regeneration of the hematopoietic system following injury, such as following infection or inflammation. These challenges impair HSC function, but whether this functional impairment extends beyond the duration of inflammatory exposure is unknown. Unexpectedly, we observed an irreversible depletion of functional HSCs following challenge with inflammation or bacterial infection, with no evidence of any recovery up to 1 year afterward. HSCs from challenged mice demonstrated multiple cellular and molecular features of accelerated aging and developed clinically relevant blood and bone marrow phenotypes not normally observed in aged laboratory mice but commonly seen in elderly humans. In vivo HSC self-renewal divisions were absent or extremely rare during both challenge and recovery periods. The progressive, irreversible attrition of HSC function demonstrates that temporally discrete inflammatory events elicit a cumulative inhibitory effect on HSCs. This work positions early/mid-life inflammation as a mediator of lifelong defects in tissue maintenance and regeneration.

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Crossref · 10.1016/j.stem.2022.06.012

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  • Inflammatory exposure induces long-term impairment of HSC self-renewal and accelerates their functional aging, contributing to persistent immune dysregulation.

    “Moreover, Bogeska et al. showed that inflammatory exposure induces long-term impairment of HSC self-renewal and accelerates their functional aging, contributing to persistent immune dysregulation [83].”

    From Chronic Stress and Autoimmunity: The Role of HPA Axis and Cortisol Dysregulation (2025) · cites this paper as [83]

    The Results report that inflammatory challenges caused lasting HSC functional decline and that LT-HSCs failed to self-renew during challenge and recovery. The Discussion reports accelerated HSC aging and later blood and bone-marrow abnormalities in exposed mice. It discusses immune suppression as a possible age-associated consequence, but does not establish that the observed HSC changes contributed to persistent immune dysregulation. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Repetitive sterile inflammation results in hypomethylation of promoters of inflammatory response genes, leading to the conclusion that self-renewal is epigenetically regulated in this model.

    “while repetitive sterile inflammation did not result in major gene expression changes, it resulted in hypomethylation of promoters of inflammatory (particularly interferon) response genes, leading them to conclude that self-renewal is epigenetically regulated in this model.”

    From Clonal hematopoiesis and inflammation – the perpetual cycle (2023) · cites this paper as [65]

    The Results section reports no profound sustained gene-expression changes in most LT-HSCs and identifies hypomethylation of promoters of interferon/inflammatory-response genes after inflammatory challenge. It says this demonstrates a lack of self-renewal at the epigenetic level, but does not establish that methylation changes regulate self-renewal; that causal conclusion goes beyond the passage. Page numbers are not available in our copy. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Inflammation drives impaired self-renewal activity and accelerates aging of HSCs.

    “Inflammation drives impaired self-renewal activity and accelerates aging of HSCs. Exposure to inflammatory stimuli during the early to mid-life stages in mice can lead to the eventual development of peripheral blood hemocytopenia, bone marrow (BM) cytopenia, and BM adipocyte accumulation, features that together constitute typical features of hematopoiesis in the elderly.17”
  • Chronic pro-inflammatory signaling due to chronic infections or repetitive sterile inflammation is detrimental to HSPC self-renewal, promoting loss of quiescence and differentiation.

    “Chronic pro-inflammatory signaling due to chronic infections or repetitive sterile inflammation, however, has been shown to be detrimental to HSPC self-renewal, promoting loss of quiescence and differentiation [61–65].”
  • The demise of the functional stem cell population with chronic inflammation is due to increased proliferation of HSPCs, not systemic inhibitory effects of inflammation on hematopoiesis.

    “the authors showed that the demise of the functional stem cell population was not due to systemic inhibitory effects of inflammation on hematopoiesis but was due to increased proliferation of HSPCs, as label-retaining long-term HSPCs did not lose their repopulating capacity with chronic inflammation [65].”

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Authors
Bogeska, R., Mikecin, A.-M., Kaschutnig, P., Fawaz, M., Büchler-Schäff, M., Le, D., Ganuza, M., Vollmer, A., Paffenholz, S. V., Asada, N., Rodriguez-Correa, E., Frauhammer, F., Buettner, F., Ball, M., Knoch, J., Stäble, S., Walter, D., Petri, A., Carreño-Gonzalez, M. J., Wagner, V., Brors, B., Haas, S., Lipka, D. B., Essers, M. A. G., Weru, V., Holland-Letz, T., Mallm, J.-P., Rippe, K., Krämer, S., Schlesner, M., McKinney Freeman, S., Florian, M. C., King, K. Y., Frenette, P. S., Rieger, M. A., & Milsom, M. D.
Affiliations
  • German Cancer Research Center (DE)
  • University Hospital Frankfurt (DE)
  • Baylor College of Medicine (US)
  • St. Jude Children's Research Hospital (US)
  • Universität Ulm (DE)
  • Albert Einstein College of Medicine (US)
  • University of Augsburg (DE)
  • Institut d'Investigació Biomédica de Bellvitge (ES)
  • Goethe University Frankfurt (DE)
Corresponding author
Milsom, Michael D.
Venue
Cell Stem Cell
Publisher
Elsevier BV
Published
2022-08
Volume
29
Issue
8
Pages
1273-1284.e8
ISSN
  • 1875-9777 (ISSN-L)
  • 1934-5909
OpenAlex
W4286254590
Cited by
299
References
66
Citations by year
2026: 67 · 2025: 88 · 2024: 56 · 2023: 60 · 2022: 16 · 2021: 8 · 2020: 3
FWCI
40.12
Type
journal article
Language
en
Open access
Locations
  • Cell stem cell (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • MDC Repository (Max-Delbrueck-Center for Molecular Medicine) (submittedVersion)
  • Queen Mary Research Online (Queen Mary University of London) (submittedVersion)
  • OPUS (Augsburg University) (submittedVersion, cc-by-nc-nd)
Funders
  • Deutsches Krebsforschungszentrum
  • Medical Research Council (MR/V009222/1)
  • National Heart, Lung, and Blood Institute (F31HL154661, R35HL155672)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK112976, R01DK056638)
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Blood disorders and treatments
Keywords
hematopoietic stem cells, HSC self-renewal, inflammation, bacterial infection, accelerated aging, HSC depletion, bone marrow aging, tissue regeneration
MeSH terms
Aged, Aging, Animals, Bone Marrow, Hematopoiesis, Hematopoietic Stem Cells, Humans, Inflammation, Mice

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