Cord Blood–Derived Endothelial Progenitor Cells Promote In Vivo Regeneration of Human Hematopoietic Bone Marrow

Doan, Phuong L.; Frei, Anne; Piryani, Sadhna O.; Szalewski, Nathan; Fan, Elizabeth M.; Himburg, Heather A.

doi:10.1016/j.ijrobp.2023.02.007

Cited by 4 publications

(1 citation statement)

References 38 publications

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“…It is known that infusion of mesenchymal stem cells or endothelial progenitor cells induces recovery of the damaged bone marrow niche and promotes hematopoiesis [ 40 – 43 ]. The difference in time to bone marrow niche recovery between the PBSCT and UCBT groups may be due to differences in the type and amount of mesenchymal stem cells and endothelial progenitor cells contained in each group [ 44 – 47 ].…”

Section: Discussionmentioning

confidence: 99%

Hematopoiesis in the spleen after engraftment in unrelated cord blood transplantation evaluated by 18F-FLT PET imaging

Araie,

Hosono,

Tsujikawa

et al. 2023

Int J Hematol

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Cord blood is an important donor source for allogeneic hematopoietic stem cell transplantation (allo-HSCT), with its unique composition and quality of hematopoietic cells. The proliferation site and potency of infused hematopoietic stem cells in humans may vary between stem cell sources. We investigated this possibility in a prospective, exploratory study to assess hematopoietic dynamics using the radiopharmaceutical 3′-deoxy-3′-18F-fluorothymidine (18F-FLT), a thymidine analog used in positron emission tomography imaging, before allo-HSCT and on days 50 and 180 after allo-HSCT. We evaluated 11 patients with hematological malignancies who underwent allo-HSCT [five with peripheral blood stem cell transplantation (PBSCT) and six with unrelated cord blood transplantation (UCBT)]. Before allo-HSCT, 18F-FLT uptake did not differ between the two groups. At day 50, 18F-FLT uptake in the spleen was significantly greater in the UCBT group than in the PBSCT group (p = 0.0043), with no difference in whole-body bone marrow. At day 180, the differences in spleen uptake had diminished, and there were no differences between groups in whole-body bone marrow or the spleen, except for the sternum. The persistence of splenic hematopoiesis after engraftment in the UCBT group may reflect the complex systemic homing and proliferation mechanisms of cord blood hematopoietic cells.

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