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December 8, 2025BloodOpen Access

U2AF1S34F mutant HSPCs have a fitness advantage in aged and inflamed bone marrow

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Authors

MDMarco De Dominici

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Overview

Analysis reveals positive selection of U2AF1S34F mutant hematopoietic stem and progenitor cells in aged, inflamed bone marrow, suggesting a link to myeloid malignancies.

Key Points

  • Positive selection of U2AF1S34F mutant cells occurs in aged bone marrow, demonstrating a fitness advantage in inflammatory conditions.
  • IL-1β administration promotes expansion of mutant hematopoietic stem and progenitor cells, indicating inflammation's role in selection.
  • Transplantation of aged U2AF1S34F cells into older mice enhances clonal expansion, reflecting the synergistic effects of age and inflammation.
  • Findings highlight the importance of monitoring aging and inflammatory states to mitigate risks of myeloid malignancies.

Cite This Study

Marco De Dominici (2025) studied this question.

synapsesocial.com/papers/69362f604fa91c937236dd51https://doi.org/10.1182/blood-2025-1395
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Transcriptional and splicing dysregulation by U2AF1 mutations contribute to inflammatory and migratory alterations in MDS2025
  2. 2Bone marrow environmental alterations underlie proliferative clonal expansion in clonal hematopoiesis2025
  3. 3Replicative stress-induced aging of hematopoietic stem progenitor cells increases oncogenic mutation burden and incidence of myelodysplasia in sickle cell disease mice2025
  4. 4Sf3b1+/K700E hematopoietic stem cells create their own expansion niche2025
  5. 5Examining the role of U2AF1 and TET2 mutations in a myeloid malignancy mouse model2025