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Distinct Repopulation Activity in Hu-Mice between CBand LPB-CD34+ Cells by Enrichment of Transcription Factors
International Journal of Stem Cells ; : 203-211, 2021.
Article in English | WPRIM | ID: wpr-891028
ABSTRACT
Background and Objectives@#Human CD34+hematopoietic stem cells can reconstitute the human hematopoietic system when transplanted into immunocompromised mice after irradiation. Human leukapheresis peripheral blood (LPB)-and cord blood (CB)-derived CD34+ cells have a similar capacity to reconstitute myeloid lineage cells in a humanized mice (hu-mice) model. However, potent stem cells, such as CB-CD34+ cells, efficiently reconstitute the lymphoid system in vivo compared to LPB-CD34 + cells. Modeling the human hematolymphoid system is vital for studying immune cell crosstalk in human xenografted mice, with CB-CD34+ cells used as an optimized cell source because they are essential in reconstituting lymphoid lineage cells. @*Methods@#and

Results:

In this study, we established hu-mice that combined human characteristics with long-term survival and investigated the efficiency of the engraftment of lymphoid lineage cells derived from LPB- and CB-CD34+cells in the bone marrow, spleen, and LPB. We found an overall increase in the transcriptional activity of lymphoid lineage genes in CB-CD34+ cells. Our results revealed that potent CB-CD34+ cells displaying a general upregulation of the expression of genes involved in lymphopoiesis could contribute to the hematolymphoid system in the humanized mice model with longevity. @*Conclusions@#Our data suggest that humanized mouse model by usage of CB-CD34 + cells displaying high expression of TFs for lymphoid lineage cells can contribute to study the immune response against lymphocytes.
Full text: Available Index: WPRIM (Western Pacific) Type of study: Prognostic study Language: English Journal: International Journal of Stem Cells Year: 2021 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Type of study: Prognostic study Language: English Journal: International Journal of Stem Cells Year: 2021 Type: Article