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Cited by 267

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Programmed death 1 signaling on chronic myeloid leukemia–specific T cells results in T-cell exhaustion and disease progression

Mumprecht, Sabine, Schürch, Christian, Schwaller, Juerg, Solenthaler, Max, Ochsenbein, Adrian F.·2009·Blood

Abstract

Chronic myeloid leukemia (CML) is a malignant myeloproliferative disease with a characteristic chronic phase (cp) of several years before progression to blast crisis (bc). The immune system may contribute to disease control in CML. We analyzed leukemia-specific immune responses in cpCML and bcCML in a retroviral-induced murine CML model. In the presence of cpCML and bcCML expressing the glycoprotein of lymphocytic choriomeningitis virus as a model leukemia antigen, leukemia-specific cytotoxic T lymphocytes (CTLs) became exhausted. They maintained only limited cytotoxic activity, and did not produce interferon-γ or tumor necrosis factor-α or expand after restimulation. CML-specific CTLs were characterized by high expression of programmed death 1 (PD-1), whereas CML cells expressed PD-ligand 1 (PD-L1). Blocking the PD-1/PD-L1 interaction by generating bcCML in PD-1–deficient mice or by repetitive administration of αPD-L1 antibody prolonged survival. In addition, we found that PD-1 is up-regulated on CD8+ T cells from CML patients. Taken together, our results suggest that blocking the PD-1/PD-L1 interaction may restore the function of CML-specific CTLs and may represent a novel therapeutic approach for CML.

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Metadata

Authors
Mumprecht, S., Schürch, C., Schwaller, J., Solenthaler, M., & Ochsenbein, A. F.
Venue
Blood
Published
2009-08-20
Volume
114
Issue
8
Pages
1528-1536
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W1978721974
Cited by
267
References
4
FWCI
8.06
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Programmed death 1 signaling on chronic myeloid leukemia–specific T cells results in T-cell exhaustion and disease progression. https://app.cochat.ai/papers/10.1182/blood-2008-09-179697
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Mumprecht, S., Schürch, C., Schwaller, J., Solenthaler, M., & Ochsenbein, A. F. (2009). Programmed death 1 signaling on chronic myeloid leukemia–specific T cells results in T-cell exhaustion and disease progression. Blood. https://doi.org/10.1182/blood-2008-09-179697

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