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| Content Provider | PubMed Central |
|---|---|
| Author | Liu, Congxiao Chen, Benny J. Deoliveira, Divinomar Sempowski, Gregory D. Chao, Nelson J. Storms, Robert W. |
| Abstract | Two critical concerns in clinical cord blood transplantation are the initial time to engraftment and the subsequent restoration of immune function. These studies measured the impact of progenitor cell dose on both the pace and strength of hematopoietic reconstitution by transplanting nonobese diabetic/severe combined immunodeficiency/interleukin-2 receptor-gamma–null (NSγ) mice with lineage-depleted aldehyde dehydrogenase-bright CD34+ human cord blood progenitors. The progress of each transplant was monitored over an extended time course by repeatedly analyzing the peripheral blood for human hematopoietic cells. In vivo human hematopoietic development was complete. After long-term transplantation assays (≥ 19 weeks), human T-cell development was documented within multiple tissues in 16 of 32 NSγ mice. Human T-cell differentiation was active within NSγ thymuses, as documented by the presence of CD4+ CD8+ T-cell progenitors as well as T-cell receptor excision circles. It is important to note that although myeloid and B-cell engraftment was detected as early as 4 weeks after transplantation, human T-cell development was exclusively late onset. High progenitor cell doses were associated with a robust human hematopoietic chimerism that accelerated both initial time to engraftment and subsequent T-cell development. At lower progenitor cell doses, the chimerism was weak and the human hematopoietic lineage development was frequently incomplete. |
| Related Links | http://dx.doi.org/10.1182/blood-2009-12-260810 |
| Ending Page | 5527 |
| Page Count | 10 |
| Starting Page | 5518 |
| File Format | |
| ISSN | 00064971 |
| e-ISSN | 15280020 |
| Journal | Blood |
| Issue Number | 25 |
| Volume Number | 116 |
| Language | English |
| Publisher | American Society of Hematology |
| Publisher Date | 2010-12-16 |
| Access Restriction | Open |
| Rights Holder | American Society of Hematology |
| Subject Keyword | Immunology Cell Biology Biochemistry Hematology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Hematology Biochemistry Immunology |
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