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- W2796760576 abstract "Donor lymphocyte infusion (DLI) is an effective approach to treat acute myelogenous leukemia (AML) relapse after allogeneic hematopoietic stem cell transplantation (allo-HSCT) that significantly improves the survival of relapsed patients. However, the mechanism of an effective antileukemic response following DLI in AML relapse remains elusive. Here, we investigated the role of T cell exhaustion in AML relapse after allo-HSCT in prospective cohorts of 41 patients with the first AML relapse and 41 nonrelapsed AML control subjects after allo-HSCT and determined whether DLI exerts effective antileukemic effects by reversing T cell exhaustion in the relapsed cohorts by detecting the phenotypes and functions of T cells using flow cytometry. We found that both CD4+ and CD8+ T cells experienced exhaustion with upregulated coexpression of PD-1 and Tim-3, and functional impairments in cytokine production, proliferation, and cytotoxic potentials. The reversal of T cell exhaustion by the first DLI is associated with persistent complete remission in relapsed AML patients. In addition, the reversal of T cell–exhausted status after successful DLI in bone marrow was concurrent with the mitigated inversion of CD4/CD8 T cell ratio. In conclusion, our study shows a clinical correlation between T cell exhaustion and AML relapse after allo-HSCT, and uncovers the role of reversing T cell exhaustion in the antileukemic response by DLI and identifies possible immunological markers to evaluate and predict the graft-versus-leukemia effects induced by DLI." @default.
- W2796760576 created "2018-04-24" @default.
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- W2796760576 date "2018-07-01" @default.
- W2796760576 modified "2023-10-15" @default.
- W2796760576 title "Reversal of T Cell Exhaustion by the First Donor Lymphocyte Infusion Is Associated with the Persistently Effective Antileukemic Responses in Patients with Relapsed AML after Allo-HSCT" @default.
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- W2796760576 doi "https://doi.org/10.1016/j.bbmt.2018.03.030" @default.
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