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Klobuch S, Hammon K, Vatter-Leising S, Neidlinger E, Zwerger M, Wandel A, Neuber LM, Heilmeier B, Fichtner R, Mirbeth C, Herr W, Thomas S. HLA-DPB1 Reactive T Cell Receptors for Adoptive Immunotherapy in Allogeneic Stem Cell Transplantation. Cells 2020; 9:cells9051264. [PMID: 32443793 PMCID: PMC7290340 DOI: 10.3390/cells9051264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/07/2020] [Accepted: 05/19/2020] [Indexed: 12/30/2022] Open
Abstract
HLA-DPB1 antigens are mismatched in about 80% of allogeneic hematopoietic stem cell transplantations from HLA 10/10 matched unrelated donors and were shown to be associated with a decreased risk of leukemia relapse. We recently developed a reliable in vitro method to generate HLA-DPB1 mismatch-reactive CD4 T-cell clones from allogeneic donors. Here, we isolated HLA-DPB1 specific T cell receptors (TCR DP) and used them either as wild-type or genetically optimized receptors to analyze in detail the reactivity of transduced CD4 and CD8 T cells toward primary AML blasts. While both CD4 and CD8 T cells showed strong AML reactivity in vitro, only CD4 T cells were able to effectively eliminate leukemia blasts in AML engrafted NOD/SCID/IL2Rγc−/− (NSG) mice. Further analysis showed that optimized TCR DP and under some conditions wild-type TCR DP also mediated reactivity to non-hematopoietic cells like fibroblasts or tumor cell lines after HLA-DP upregulation. In conclusion, T cells engineered with selected allo-HLA-DPB1 specific TCRs might be powerful off-the-shelf reagents in allogeneic T-cell therapy of leukemia. However, because of frequent (common) cross-reactivity to non-hematopoietic cells with optimized TCR DP T cells, safety mechanisms are mandatory.
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Affiliation(s)
- Sebastian Klobuch
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
- Correspondence: (S.K.); (S.T.); Tel.: +49-941-944-5142 (S.T.)
| | - Kathrin Hammon
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
- Regensburg Center for Interventional Immunology, University of Regensburg, 93042 Regensburg, Germany
| | - Sarah Vatter-Leising
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
| | - Elisabeth Neidlinger
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
| | - Michael Zwerger
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
| | - Annika Wandel
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
| | - Laura Maria Neuber
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
| | - Bernhard Heilmeier
- Department of Oncology and Hematology, Hospital Barmherzige Brueder, 93049 Regensburg, Germany;
| | - Regina Fichtner
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
| | - Carina Mirbeth
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
| | - Wolfgang Herr
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
| | - Simone Thomas
- Department of Internal Medicine III, University Hospital Regensburg, 93042 Regensburg, Germany; (K.H.); (S.V.-L.); (E.N.); (M.Z.); (A.W.); (L.M.N.); (R.F.); (C.M.); (W.H.)
- Regensburg Center for Interventional Immunology, University of Regensburg, 93042 Regensburg, Germany
- Correspondence: (S.K.); (S.T.); Tel.: +49-941-944-5142 (S.T.)
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