ArticleCell research2026
Transient mechanical activation of the Piezo1 channel facilitates ex vivo expansion of hematopoietic stem cells.
Article in Cell research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Injectable microsphere-based delivery strategies for stem cells and their derivatives in tissue regeneration.Bioactive materials · 2026Review
- LIPUS-mediated mechanotransduction activates the YAP/TAZ/SCX axis and enhances tenogenesis-associated responses in tendon stem cells.Biomedical reports · 2026Article
- Flow-Induced Yap/Taz Signaling Balances Endothelial and Hematopoietic Stem Cell Fates.bioRxiv : the preprint server for biology · 2026Article
- Aging mechanisms and rejuvenation strategies for hematopoietic stem cells.Genome biology · 2026Review
- Mechanotransduction and cell fate: from molecular sensors to multicellular self-organization.Frontiers in cell and developmental biology · 2026Review
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Authors and funding
23 authors.
Funding
Abstract
Achieving long-term ex vivo expansion of functional hematopoietic stem cells (HSCs) is essential for advancing HSC-based clinical therapies. Although mechanosensitive ion channels are known to play key roles in the hematopoietic system, their involvement in HSC expansion remains unclear. Here, we show that Piezo1 is highly expressed in HSCs. Both genetic deletion and prolonged chemical activation of Piezo1 impair cultured HSC function, indicating that transient mechanical activation of Piezo1 is required for maintenance of HSCs in culture. To achieve this, we screened various microspheres and found that PS500 (500-nm polystyrene microspheres) significantly enhanced ex vivo expansion of mouse bone marrow HSCs with long-term repopulating capacity. PS500 also expanded human umbilical cord blood HSCs capable of engraftment in immunodeficient mice. Mechanistically, PS500 activates Piezo1, triggering Ca
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