Cited by 10Hematopoietic Stem Cell TransplantationAcute Myeloid Leukemia ResearchMesenchymal stem cell research

Human haematopoietic stem cells remember inflammatory stress

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Zeng, Andy G. X., Nagree, Murtaza S., Jakobsen, Niels Asger, Shah, Sayyam, Varesi, Angelica, Kang, Jasmine Ryu Won, Murison, Alex, Cheong, Jin-Gyu +29 more·2026·Nature

Abstract

Inflammation activates blood cells, contributing to ageing and malignancy 1–3 . Haematopoietic stem cells (HSCs) survive a lifetime of infection to sustain life-long haematopoiesis 1–9 , but how human HSCs respond and adapt to inflammatory stress is largely unknown. Here, to empirically understand this adaptation, we developed xenograft inflammation–recovery models and performed single-cell multiomics on xenografted human HSCs. Two transcriptionally and epigenetically distinct HSC subsets were identified with one, termed HSC inflammatory memory (HSC-iM), retaining a molecular memory of previous inflammatory treatments. The HSC-iM subset exhibited quiescence and restrained haematopoietic output. Molecularly, the HSC-iM program was enriched in HSCs from adult and paediatric samples across conditions ranging from COVID-19 recovery, sickle cell disease, ageing and clonal haematopoiesis, establishing both the validity of our xenograft models and the physiological relevance of HSC-iM. Clonal haematopoiesis mutations in HSC-iM attenuated the effects of inflammatory stress by promoting HSC activation and differentiation. Moreover, transmission of the pro-inflammatory HSC-iM transcriptional program to differentiated immune progeny was demonstrated in xenograft and physiological settings. Finally, HSC-iM program enrichment in circulating blood cells was associated with a heightened risk score for all-cause mortality in population cohort analyses, underscoring the clinical relevance of this newly identified HSC subset in characterizing heterogeneous health outcomes across a lifetime.

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  • There is a potential causal link between UPR and IFN activation.

    “supporting a potential causal link between UPR and IFN activation 62”

    From Type 1 interferon perturbates clonal competition by reshaping human blood development (2026) · cites this paper as [62]

    The sections on inflammatory response priming and HSC-II memory describe inflammatory signalling in haematopoietic stem cells, but do not connect it to a UPR. Searches for “UPR,” “unfolded protein response,” and interferon activation with endoplasmic-reticulum stress found no passage addressing the proposed causal link. The available copy therefore does not verify the claim. (LLM, conf=0.76)

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Authors
Zeng, A. G. X., Nagree, M. S., Jakobsen, N. A., Shah, S., Varesi, A., Kang, J. R. W., Murison, A., Cheong, J.-G., Turkalj, S., Zhang, X., Radtke, F. A., Abera, T.-A., Lim, I. N. X., Jin, L., Araújo, J., Aguilar-Navarro, A. G., Parris, D., McLeod, J., Kim, H., Lee, H. S., Zhang, L., Boulanger, M., Bader, E., Gbeha, E., Parkhurst, C. N., Wagenblast, E., Flores-Figueroa, E., Wang, B., Schwartz, G. W., Shultz, L. D., Nam, A. S., Grimes, H. L., Josefowicz, S. Z., Awadalla, P., Vyas, P., Dick, J. E., & Xie, S. Z.
Affiliations
  • University Health Network (CA)
  • University of Oxford (GB)
  • Ontario Institute for Cancer Research (CA)
  • Cornell University (US)
  • Boston Children's Hospital (US)
  • Cincinnati Children's Hospital Medical Center (US)
  • Weill Cornell Medicine (US)
  • Universidade do Porto (PT)
  • Jackson Laboratory (US)
Corresponding author
Xie, Stephanie Z.
Venue
Nature
Published
2026-05-27
Volume
655
Issue
8122
Pages
458-467
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W7162495308
Cited by
10
References
20
Citations by year
2026: 10
FWCI
48.90
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (publishedVersion, cc-by)
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
Keywords
inflammatory memory, inflammatory stress, single-cell multi-omics, HSC quiescence, clonal hematopoiesis, sickle cell disease, COVID-19 recovery, aging, epigenetic memory
MeSH terms
Clonal Hematopoiesis, COVID-19, Adult, Aging, Anemia, Sickle Cell, Animals, Cell Differentiation, Child, Female, Hematopoiesis, Hematopoietic Stem Cells, Humans, Inflammation, Male, Stress, Physiological, Mice, Single-Cell Analysis, Heterografts

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