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Identifying DNA Mutations in Purified Hematopoietic Stem/Progenitor Cells
Published on: February 24, 2014
Origin of cell populations after bone marrow transplantation. Analysis using DNA sequence polymorphisms
The Journal of Clinical Investigation
|February 1, 1985
Summary
DNA sequence polymorphism analysis reliably distinguishes host from donor cells after bone marrow transplantation. This powerful tool documents engraftment, evaluates relapse, and studies mixed chimerism in patients.
Area of Science:
- Hematology
- Genetics
- Immunology
Background:
- Bone marrow transplantation (BMT) replaces patient cells with donor cells.
- Distinguishing host from donor cells is crucial for documenting successful engraftment.
- DNA analysis offers a method to differentiate cell origins post-transplant.
Purpose of the Study:
- To establish DNA sequence polymorphism analysis for reliable host/donor cell identification post-BMT.
- To document and characterize engraftment status in patients.
- To evaluate post-transplant complications like relapse and graft failure.
Main Methods:
- Utilized a panel of six cloned DNA probes and polymorphisms.
- Analyzed post-transplant peripheral leukocytes using DNA restriction enzyme digestion and blot hybridization.
- Studied 18 patients at various time points after BMT.
Main Results:
- Over 95% of sibling donor pairs had at least one distinguishing DNA marker.
- Full engraftment was documented in 15 out of 18 patients.
- Mixed chimerism was detected in 3 patients; one SCID patient showed mixed donor/host cell lineages.
Conclusions:
- DNA sequence polymorphism analysis is a powerful tool for documenting BMT engraftment.
- This method aids in evaluating post-transplant leukemic relapse and graft issues.
- It enables comprehensive study of mixed hematopoietic and lymphoid chimerism.
