BACKGROUND: After HLA-identical hematopoietic stem cell transplantation, minor histocompatibility (mH) antigen alloreactivity plays a dominant role in the development of graft-versus-host disease (GVHD) and graft versus leukemia (GVL). STUDY DESIGN AND METHODS: We have analyzed the mH alloreactivity (enzyme-linked immunospot [ELISpot] for interferon-gamma[IFN-gamma] assay) from 24 donor/recipient pairs over a period of 2 years of follow-up and correlated such alloreactivity with the development of GVHD or absence of relapse. Circulating specific T cells anti-mH with multimer HLA-peptides were also studied. RESULTS: We show by ELISpot IFN-gamma assay that alloreactivity during the first 3 months from donor versus recipient or donor versus mismatched identified mH antigens is associated with acute GVHD and GVL effect. In addition, we demonstrate that the donor-versus-recipient reactivity observed after the third month is highly associated with chronic GVHD and GVL (p = 0.0007). Finally, we show by multimer HLA-peptide assay that mH epitope-specific T cells present after 3 months are statistically related to the GVL effect. CONCLUSIONS: Our results provide a robust method to monitor mH antigen graft-versus-host reaction and suggest that current identified mH have predictive value on GVHD and GVL.
BACKGROUND: After HLA-identical hematopoietic stem cell transplantation, minor histocompatibility (mH) antigen alloreactivity plays a dominant role in the development of graft-versus-host disease (GVHD) and graft versus leukemia (GVL). STUDY DESIGN AND METHODS: We have analyzed the mH alloreactivity (enzyme-linked immunospot [ELISpot] for interferon-gamma[IFN-gamma] assay) from 24 donor/recipient pairs over a period of 2 years of follow-up and correlated such alloreactivity with the development of GVHD or absence of relapse. Circulating specific T cells anti-mH with multimer HLA-peptides were also studied. RESULTS: We show by ELISpot IFN-gamma assay that alloreactivity during the first 3 months from donor versus recipient or donor versus mismatched identified mH antigens is associated with acute GVHD and GVL effect. In addition, we demonstrate that the donor-versus-recipient reactivity observed after the third month is highly associated with chronic GVHD and GVL (p = 0.0007). Finally, we show by multimer HLA-peptide assay that mH epitope-specific T cells present after 3 months are statistically related to the GVL effect. CONCLUSIONS: Our results provide a robust method to monitor mH antigen graft-versus-host reaction and suggest that current identified mH have predictive value on GVHD and GVL.
Authors: Amir A Toor; Roy T Sabo; Catherine H Roberts; Bonny L Moore; Salman R Salman; Allison F Scalora; May T Aziz; Ali S Shubar Ali; Charles E Hall; Jeremy Meier; Radhika M Thorn; Elaine Wang; Shiyu Song; Kristin Miller; Kathryn Rizzo; William B Clark; John M McCarty; Harold M Chung; Masoud H Manjili; Michael C Neale Journal: Biol Blood Marrow Transplant Date: 2015-04-04 Impact factor: 5.742
Authors: Chopie Hassan; Michel G D Kester; Arnoud H de Ru; Pleun Hombrink; Jan Wouter Drijfhout; Harm Nijveen; Jack A M Leunissen; Mirjam H M Heemskerk; J H Frederik Falkenburg; Peter A van Veelen Journal: Mol Cell Proteomics Date: 2013-03-12 Impact factor: 5.911