Cited by 114T-cell and Retrovirus StudiesMonoclonal and Polyclonal Antibodies ResearchT-cell and B-cell Immunology

A neutralizing monoclonal antibody (mAb A24) directed against the transferrin receptor induces apoptosis of tumor T lymphocytes from ATL patients

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Moura, I. C.·2004·Blood

Abstract

Adult T-cell leukemia/lymphoma (ATL) is an aggressive lymphoid proliferative disease that exists under diverse clinical forms ranging from chronic to acute. Although leukemic cells from patients with ATL exhibit an intrinsic resistance to chemotherapy, monoclonal antibodies directed against CD25 (interleukin 2 receptor alpha [IL-2Ralpha] antibody) have been used as specific therapeutic agents. However, significant clinical results with these antibodies have been demonstrated only in chronic forms of ATL. In contrast to resting T cells, human T-cell lymphotropic virus type 1 (HTLV-1)-infected cells constitutively express high levels of surface transferrin receptor (TfR). Herein, we report the characterization of a new monoclonal antibody (mAb A24) directed against the human TfR and the evaluation of its capacity to block the proliferation of ATL cells ex vivo. We determined that A24 binds TfR with an equilibrium constant (K'd) of 2.7 nM and competes with transferrin for binding to TfR. A24 also inhibited [55Fe]-transferrin uptake in activated T cells and blocked T-cell proliferation. Moreover, A24 reduced and impaired TfR expression and recycling, respectively. Most important, we showed that A24 blocked the ex vivo proliferation of malignant T cells from both acute and chronic forms of ATL, through induction of programmed cell death. Therefore efficient therapeutic tools to treat acute forms of ATL might be derived from A24.

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Crossref · 10.1182/blood-2003-07-2440

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  • A24 induced apoptosis and blocked ex vivo proliferation of malignant T cells from both chronic and acutely infected patients.

    “A pre-clinical study characterised the potential of A24, which induced apoptosis and blocked ex vivo proliferation of malignant T cells from both chronic and acutely infected patients [207].”

    From Current State of Therapeutics for HTLV-1 (2024) · cites this paper as [207]

    The section on ex vivo proliferation reports that A24 significantly inhibited cells from patients with both acute and chronic ATL. The apoptosis section reports apoptosis in tumor cells from acute ATL patients and in a nonacute cell-line model, but does not establish apoptosis in cells from chronic ATL patients. The paper describes acute and chronic forms of ATL, not acute versus chronic infection. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Anti-TfR treatment was only effective in some cancers such as adult T-cell leukemia/lymphoma (ATL) and leukemia.

    “However, treatment was only effective in some cancers such as adult T-cell leukemia/lymphoma (ATL) and leukemia [99,100].”

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Research works printed but not linked: 2

  1. Takatsuki K, Hinuma Y. Adult T-cell leukemia/lym- phoma. In: Gallo RC, Wong-Staal F, eds. Retrovi- rus Biology and Human Disease. New York, NY: Dekker; 1990:147.
  2. Lesley J, Hyman R, Schulte R, Trotter J. Expres- sion of transferrin receptor on murine hematopoi- etic progenitors. Cell Immunol. 1984;83:14-25.

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Authors
Moura, I. C.
Affiliations
Inserm (FR)
Corresponding author
Moura, I. C.
Venue
Blood
Published
2004-03-01
Volume
103
Issue
5
Pages
1838-1845
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2039030099
Cited by
114
References
46
Citations by year
2026: 2 · 2025: 1 · 2024: 8 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 6 · 2019: 9 · 2018: 4 · 2017: 3 · 2016: 4 · 2015: 1 · 2014: 2 · 2013: 3 · 2012: 5
FWCI
2.31
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
Funders
Ligue Contre le Cancer
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and Retrovirus Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
adult T-cell leukemia/lymphoma, transferrin receptor, apoptosis, T cell proliferation inhibition, HTLV-1, transferrin uptake, receptor recycling, targeted therapy
MeSH terms
Antibodies, Monoclonal, Cell Division, Dose-Response Relationship, Drug, Flow Cytometry, Humans, Iron, Kinetics, Leukocytes, Mononuclear, Lymphocyte Activation, Protein Binding, Receptors, Transferrin, T-Lymphocytes, Transferrin, Human T-lymphotropic virus 1, Receptors, Interleukin-2, Leukemia, T-Cell, Cell Death, Apoptosis, Microscopy, Confocal, Surface Plasmon Resonance

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