Abstract:
:Cryopreservation of hematopoietic stem cells (HSCs) and hematopoietic progenitor cells (HPCs) is crucial for cord blood (CB) banking and transplantation. We evaluated recovery of functional HPC cryopreserved as mononuclear or unseparated cells for up to 23.5 years compared with prefreeze values of the same CB units. Highly efficient recovery (80%-100%) was apparent for granulocyte-macrophage and multipotential hematopoietic progenitors, although some collections had reproducible low recovery. Proliferative potential, response to multiple cytokines, and replating of HPC colonies was extensive. CD34(+) cells isolated from CB cryopreserved for up to 21 years had long-term (≥ 6 month) engrafting capability in primary and secondary immunodeficient mice reflecting recovery of long-term repopulating, self-renewing HSCs. We recovered functionally responsive CD4(+) and CD8(+) T lymphocytes, generated induced pluripotent stem (iPS) cells with differentiation representing all 3 germ cell lineages in vitro and in vivo, and detected high proliferative endothelial colony forming cells, results of relevance to CB biology and banking.
journal_name
Bloodjournal_title
Bloodauthors
Broxmeyer HE,Lee MR,Hangoc G,Cooper S,Prasain N,Kim YJ,Mallett C,Ye Z,Witting S,Cornetta K,Cheng L,Yoder MCdoi
10.1182/blood-2011-01-330514subject
Has Abstractpub_date
2011-05-05 00:00:00pages
4773-7issue
18eissn
0006-4971issn
1528-0020pii
blood-2011-01-330514journal_volume
117pub_type
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