Thromb Haemost 2015; 113(05): 1084-1094
DOI: 10.1160/TH14-09-0748
Endothelium and Angiogenesis
Schattauer GmbH

Bone-marrow-derived very small embryonic-like stem cells in patients with critical leg ischaemia: evidence of vasculogenic potential

Coralie L. Guerin
1   Paris Descartes University, Sorbonne Paris Cité, Paris, France
2   Inserm UMR-S970, PARCC, Paris Research Cardiovascular Research Center, Paris, France
3   Inserm UMR-S1140, Paris, France
,
Xavier Loyer
1   Paris Descartes University, Sorbonne Paris Cité, Paris, France
2   Inserm UMR-S970, PARCC, Paris Research Cardiovascular Research Center, Paris, France
,
José Vilar
1   Paris Descartes University, Sorbonne Paris Cité, Paris, France
2   Inserm UMR-S970, PARCC, Paris Research Cardiovascular Research Center, Paris, France
,
Audrey Cras
1   Paris Descartes University, Sorbonne Paris Cité, Paris, France
3   Inserm UMR-S1140, Paris, France
4   AP-HP, Saint Louis Hospital, Cell therapy Department, Paris, France
,
Tristan Mirault
1   Paris Descartes University, Sorbonne Paris Cité, Paris, France
5   AP-HP, European Georges Pompidou Hospital, Vascular Medicine Department, Paris, France
,
Pascale Gaussem
1   Paris Descartes University, Sorbonne Paris Cité, Paris, France
3   Inserm UMR-S1140, Paris, France
6   AP-HP, European Georges Pompidou Hospital, Hematology Department, Paris, France
,
Jean-Sébastien Silvestre
1   Paris Descartes University, Sorbonne Paris Cité, Paris, France
2   Inserm UMR-S970, PARCC, Paris Research Cardiovascular Research Center, Paris, France
,
David M. Smadja
1   Paris Descartes University, Sorbonne Paris Cité, Paris, France
3   Inserm UMR-S1140, Paris, France
6   AP-HP, European Georges Pompidou Hospital, Hematology Department, Paris, France
› Author Affiliations
Further Information

Publication History

Received: 09 September 2014

Accepted after minor revision: 07 January 2014

Publication Date:
24 November 2017 (online)

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Summary

Very small embryonic-like stem cells (VSELs) are multipotent stem cells localised in adult bone marrow (BM) that may be mobilised into peripheral blood (PB) in response to tissue injury. We aimed to quantify VSELs in BM and PB of patients with critical limb ischaemia (CLI) and to test their angiogenic potential in vitro as well as their therapeutic capacity in mouse model of CLI. We isolated BM VSELs from patients with CLI and studied their potential to differentiate into vascular lineages. Flow and imaging cytometry showed that VSEL counts were lower in BM (p< 0.001) and higher (p< 0.001) in PB from CLI patients compared to healthy controls, suggesting that ischaemia may trigger VSELs mobilisation in this patient population. Sorted BM-VSELs cultured in angiogenic media acquired a mesenchymal phenotype (CD90+, Thy-1 gene positive expression). VSEL-derived cells had a pattern of secretion similar to that of endothelial progenitor cells, as they released low levels of VEGF-A and inflammatory cytokines. Noteworthy, VSELs triggered post-ischaemic revascularisation in immunodeficient mice (p< 0.05 vs PBS treatment), and acquired an endothelial phenotype either in vitro when cultured in the presence of VEGF-B (Cdh-5 gene positive expression), or in vivo in Matrigel implants (human CD31+ staining in neo-vessels from plug sections). In conclusion, VSELs are a potential new source of therapeutic cells that may give rise to cells of the endothelial lineage in humans.