1
|
Daniel V, Süsal C, Scherer S, Tran H, Gombos P, Trojan K, Sadeghi M, Morath C, Opelz G. Endothelial precursor cell cross-match using Tie-2-enriched spleen cells. Clin Transplant 2017; 31. [PMID: 28925558 DOI: 10.1111/ctr.13118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND Non-HLA antibodies against human endothelial progenitor cells (EPC) in pre-transplant recipient serum can have a deleterious influence on the graft. EPC enriched from peripheral blood have been commonly used for EPC cross-matching. In the present study, we describe cross-matches using EPC enriched from fresh or frozen-thawed spleen cell preparations, thereby widening the sample source for deceased-donor cross-matching and retrospective studies. METHODS EPC cross-matches were performed retrospectively using spleen cells and the flow cytometric XM-ONE cross-match test kit. RESULTS Healthy controls (n = 28) showed no IgG antibodies against EPC. When sera of 11 random dialysis patients were studied, 2 patients (18%) exhibited IgG EPC antibodies. When pre-transplant sera of 20 kidney graft recipients with good long-term graft outcome (serum creatinine 1.0 ± 0.2 mg/dL measured 2463 ± 324 days post-transplant) were investigated using frozen-thawed and then separated Tie-2-enriched spleen cells of the original transplant donor, 3 patients (15%) had pre-transplant IgG EPC antibodies. When pre-transplant sera of 5 patients with intra-operative graft loss were studied employing the original donor spleen cells, 4 (80%) patients showed IgG EPC antibodies. CONCLUSIONS Cross-matches with spleen cell-derived EPC using the XM-ONE assay are technically possible. Our very preliminary experience suggests clinical relevance.
Collapse
Affiliation(s)
- Volker Daniel
- Transplantation-Immunology, Institute of Immunology, University-Hospital Heidelberg, Heidelberg, Germany
| | - Caner Süsal
- Transplantation-Immunology, Institute of Immunology, University-Hospital Heidelberg, Heidelberg, Germany
| | - Sabine Scherer
- Transplantation-Immunology, Institute of Immunology, University-Hospital Heidelberg, Heidelberg, Germany
| | - Hien Tran
- Transplantation-Immunology, Institute of Immunology, University-Hospital Heidelberg, Heidelberg, Germany
| | - Petra Gombos
- Transplantation-Immunology, Institute of Immunology, University-Hospital Heidelberg, Heidelberg, Germany.,Department of Surgery, University-Hospital Heidelberg, Heidelberg, Germany
| | - Karina Trojan
- Transplantation-Immunology, Institute of Immunology, University-Hospital Heidelberg, Heidelberg, Germany
| | - Mahmoud Sadeghi
- Transplantation-Immunology, Institute of Immunology, University-Hospital Heidelberg, Heidelberg, Germany.,Department of Surgery, University-Hospital Heidelberg, Heidelberg, Germany
| | - Christian Morath
- Department of Nephrology, Center for Internal Medicine, University-Hospital Heidelberg, Heidelberg, Germany
| | - Gerhard Opelz
- Transplantation-Immunology, Institute of Immunology, University-Hospital Heidelberg, Heidelberg, Germany
| |
Collapse
|