ArticleStem cell research & therapy2024
Extensive immunophenotypic sub-population analysis of StemRegenin1 expanded haematopoietic stem/progenitor cells.
Article in Stem cell research & therapy, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Hematopoietic stem and progenitor cells derived platelet lysate promotes diabetic wound healing.Molecular medicine (Cambridge, Mass.) · 2026Article
- A selection model for umbilical cord blood units with high isolation yield of total nucleated and CD34+ cells.Stem cells translational medicine · 2026Article
- Expansion characteristics of CD34Human cell · 2025Article
- Preconditioning with StemRegenin 1 enhances human adipose stromal/stem cells proliferation, migration, and protection against antimycin A.Molecular therapy. Methods & clinical development · 2025Article
- HIV-exposed uninfected umbilical cord blood haematopoietic stem/progenitor cells differ immunophenotypically from those from HIV unexposed umbilical cord blood but have similar expansion and colony-forming properties in vitro.Bone marrow transplantation · 2025Article
- Antiretroviral-Induced Toxicity in Umbilical Cord Blood-Derived Haematopoietic Stem/Progenitor Cells.Journal of cellular and molecular medicine · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
backgroundEx vivo haematopoietic stem/progenitor cell (HSPCs) expansion constitutes an important area of research, and has the potential to improve access to umbilical cord blood (UCB) as a source of stem cells for haematopoietic stem cell transplantation (HSCT). The ability to improve stem cell dose and thereby reduce delayed engraftment times, which has plagued the use of UCB as a stem cell source since inception, is a recognised advantage. The extent to which cluster of differentiation (CD)34 sub-populations are affected by expansion with StemRegenin1 (SR1), and whether a particular subtype may account for better engraftment than others, is currently unknown. The purpose of this study was to determine the impact of SR1-induced HSPC expansion on CD34+ immunophenotypic subsets and gene expression profiles.
methodsUCB-derived CD34+ HSPCs were characterised before (D0) and after expansion (D7) with SR1 using an extensive immunophenotypic panel. In addition, gene expression was assessed and differentially expressed genes were categorised into biological processes.
resultsA dose-dependent increase in the number of CD34+ HSPCs was observed with SR1 treatment, and unbiased and extensive HSPC immunophenotyping proved to be a powerful tool in identifying unique sub-populations within the HSPC repertoire. In this regard, we found that SR1 promotes the emergence of HSPC subsets which may aid engraftment post expansion. In addition, we observed that SR1 has a minimal effect on the transcriptome of 7-day expanded CD34+ HSPCs when compared to cells expanded without SR1, with only two genes being downregulated in the former.
conclusionThis study revealed that SR1 selects for potentially novel immunophenotypic HSPC subsets post expansion and has a minimal effect on the transcriptome of 7-day expanded HSPCs when compared to vehicle controls. Whether these distinct immunophenotypic sub-populations possess greater engraftment capacity remains to be tested in animal models.
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