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Immune reconstitution after cord blood transplants supported by coinfusion of mobilized hematopoietic stem cells from a third party donor
- Source :
- Bone Marrow Transplantation. 44:213-225
- Publication Year :
- 2009
- Publisher :
- Springer Science and Business Media LLC, 2009.
-
Abstract
- Low severity of GVHD, substantial graft vs tumor (GVT) and slow development of protective immunity are well-documented features of cord blood transplants (CBT). We have evaluated the immune reconstitution of adult recipients of single-unit CBT supported by the coinfusion of third party donor (TPD) mobilized hematopoietic stem cells (MHSC), a procedure-'dual CB/TPD-MHSC transplant'-that results in early recovery of circulating granulocytes, high rates of CB engraftment and full chimerism. Cumulative recovery of natural killer and B cells at or above the median values of normal controls were 1.0 and 0.76 by the sixth and ninth months. Recovery of T cells was much slower, naive cells lagging behind those of memory and effector (committed) immunophenotypes. Serial analyses of signal joint TCR excision circles showed a general pattern of very low levels by the third month after CBT, followed by recovery to levels persistently similar or higher than those observed before transplantation and in normal controls. Our results are consistent with the clinical observations of substantial GVT effect together with low incidence of serious GVHD and slow development of protective immunity and suggest that thymic function contributes substantially to the recovery of T-cell populations in adults receiving dual CB/TPD-MHSC transplants.
- Subjects :
- Adult
Male
Transplantation Conditioning
medicine.medical_treatment
Graft vs Host Disease
Kaplan-Meier Estimate
Cord Blood Stem Cell Transplantation
Hematopoietic stem cell transplantation
Lymphocyte Activation
Disease-Free Survival
Young Adult
Immune system
Transplantation Immunology
Living Donors
medicine
Humans
Hematopoietic Stem Cell Mobilization
Transplantation
business.industry
Histocompatibility Testing
Graft Survival
Hematopoietic Stem Cell Transplantation
Hematology
Middle Aged
Haematopoiesis
Hematologic Neoplasms
Cord blood
Immunology
Female
Stem cell
business
Subjects
Details
- ISSN :
- 14765365 and 02683369
- Volume :
- 44
- Database :
- OpenAIRE
- Journal :
- Bone Marrow Transplantation
- Accession number :
- edsair.doi.dedup.....6ad94d3c42781a0b868e85712eca9453