PMID- 19034014 OWN - NLM STAT- MEDLINE DCOM- 20081231 LR - 20181201 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 86 IP - 10 DP - 2008 Nov 27 TI - Selective depletion of alloreactive T lymphocytes using patient-derived nonhematopoietic stimulator cells in allograft engineering. PG - 1427-35 LID - 10.1097/TP.0b013e31818810d6 [doi] AB - BACKGROUND: Selective depletion of alloreactive T cells in vitro results in efficient graft-versus-host disease prophylaxis in allogeneic hematopoietic stem-cell transplantation, but it is accompanied by increased recurrence of leukemia. To spare donor T-cell-mediated graft-versus-leukemia immunity against hematopoiesis-restricted minor histocompatibility (minor-H) antigens, we explored the use of patient-derived nonhematopoietic antigen-presenting cells (APC) as allogeneic stimulators for selective allodepletion in leukemia-reactive donor T-cell lines. METHODS: Primary keratinocytes, dermal fibroblasts, and bone marrow fibroblasts were generated from skin biopsies and diagnostic bone marrow aspirates of acute myeloid leukemia patients in vitro. Cell cultures were analyzed for expansion, phenotype, and immunostimulatory capacity in comparison with CD40-activated B cells as professional APC. In addition, nonhematopoietic APCs were used for selective allodepletion in vitro. RESULTS: Patient-derived fibroblasts could be reliably expanded to large cell numbers, whereas keratinocytes had limited growth potential. Interferon-gamma-pretreated fibroblasts showed increased expression of human leukocyte antigen (HLA)-class I and II molecules, CD40, and CD54. Fibroblasts and CD40-activated B cells comparably stimulated HLA-A*0301-specific CD8 T cells after transient expression of HLA-A*0301 as a model alloantigen. Finally, fibroblasts could be effectively applied to selectively deplete alloreactivity within leukemia-reactive donor CD8 T-cell lines by targeting the activation-induced antigen CD137. CONCLUSIONS: Primary fibroblasts can be efficiently used as allogeneic nonhematopoietic APC for selective depletion of donor T cells reactive to HLA and ubiquitously expressed minor-H antigen disparities in leukemia-stimulated CD8 T-cell lines. Therefore, harnessing alloreactivity to hematopoietic minor-H antigens in addition to leukemia-associated antigens might increase graft-versus-leukemia immunity of donor lymphocyte grafts in allogeneic hematopoietic stem-cell transplantation. FAU - Nonn, Marion AU - Nonn M AD - Department of Medicine III - Hematology and Oncology, Johannes Gutenberg-University Medical School, Mainz, Germany. FAU - Herr, Wolfgang AU - Herr W FAU - Khan, Shamsul AU - Khan S FAU - Todorova, Mariya AU - Todorova M FAU - Link, Irina AU - Link I FAU - Thies, Jochen AU - Thies J FAU - Distler, Eva AU - Distler E FAU - Kaltwasser, Marcus AU - Kaltwasser M FAU - Hoffmann, Julia AU - Hoffmann J FAU - Huber, Christoph AU - Huber C FAU - Hartwig, Udo F AU - Hartwig UF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (Antigens, CD) RN - 0 (HLA-D Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Tumor Necrosis Factor Receptor Superfamily, Member 9) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Adult MH - Antigens, CD/immunology MH - B-Lymphocytes/immunology MH - Dermis/cytology/immunology MH - Epidermal Cells MH - Epidermis/immunology MH - Fibroblasts/drug effects/immunology MH - Graft vs Host Disease/immunology MH - HLA-D Antigens/immunology MH - Hematopoietic Stem Cell Transplantation/methods MH - Histocompatibility Antigens Class I/immunology MH - Humans MH - Interferon-gamma/immunology MH - Keratinocytes/immunology MH - Lymphocyte Depletion/*methods MH - Skin/immunology MH - T-Lymphocytes/*immunology MH - Tissue Engineering/methods MH - Transplantation, Homologous/*immunology MH - Tumor Necrosis Factor Receptor Superfamily, Member 9/immunology EDAT- 2008/11/27 09:00 MHDA- 2009/01/01 09:00 CRDT- 2008/11/27 09:00 PHST- 2008/11/27 09:00 [pubmed] PHST- 2009/01/01 09:00 [medline] PHST- 2008/11/27 09:00 [entrez] AID - 00007890-200811270-00016 [pii] AID - 10.1097/TP.0b013e31818810d6 [doi] PST - ppublish SO - Transplantation. 2008 Nov 27;86(10):1427-35. doi: 10.1097/TP.0b013e31818810d6.