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Updated: May 23, 2026
08:05
Bone Marrow Transplantation Platform to Investigate the Role of Dendritic Cells in Graft-versus-Host Disease
Published on: March 17, 2020
Bone marrow B cell precursor number after allogeneic stem cell transplantation and GVHD development
Yuri Fedoriw1, T Danielle Samulski, Allison M Deal
1Department of Pathology and Laboratory Medicine, The University of North Carolina, Chapel Hill, NC 27599, USA.
Summary
Patients lacking chronic graft-versus-host disease (cGVHD) after stem cell transplant show better B cell recovery. Early bone marrow B cell precursor numbers may predict favorable outcomes and reduced cGVHD risk.
Area of Science:
- Immunology
- Hematology
- Transplantation Science
Background:
- Allogeneic hematopoietic stem cell transplantation (HSCT) can lead to graft-versus-host disease (GVHD).
- B cell reconstitution is crucial for immune homeostasis post-HSCT.
- Chronic GVHD (cGVHD) impacts long-term outcomes after HSCT.
Purpose of the Study:
- To investigate B cell lymphopoiesis in bone marrow (BM) early after HSCT.
- To determine if B cell precursor numbers correlate with cGVHD development.
- To identify potential biomarkers for predicting HSCT outcomes.
Main Methods:
- Analysis of BM biopsies at day 30 post-HSCT.
- Immunostaining for TdT and PAX5 to identify B cell precursors.
- Comparison of precursor B cell numbers between patients who developed cGVHD and those who did not.
Main Results:
- Significantly higher numbers of BM B cell precursors were found in patients without cGVHD compared to those with cGVHD (median = 44 vs 2 cells/hpf; P < .001).
- This difference remained significant even after excluding patients receiving high-dose steroids (median = 49 vs 20 cells/hpf; P = .017).
- Elevated B cell activating factor (BAFF) levels were observed in all patients early post-HSCT.
Conclusions:
- Bone marrow B cell production capacity is associated with human GVHD development.
- Increased BM precursor B cell numbers may predict good clinical outcomes after HSCT.
- Early B cell lymphopoiesis is a potential indicator for managing GVHD risk.
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