T cells targeted to TdT kill leukemic lymphoblasts while sparing normal lymphocytes

Autor: Muhammad Ali, Eirini Giannakopoulou, Yingqian Li, Madeleine Lehander, Stina Virding Culleton, Weiwen Yang, Cathrine Knetter, Mete Can Odabasi, Ravi Chand Bollineni, Xinbo Yang, Zsofia Foldvari, Maxi-Lu Böschen, Eli Taraldsrud, Erlend Strønen, Mireille Toebes, Amy Hillen, Stefania Mazzi, Arnoud H. de Ru, George M. C. Janssen, Arne Kolstad, Geir Erland Tjønnfjord, Benedicte A. Lie, Marieke Griffioen, Sören Lehmann, Liv Toril Osnes, Jochen Buechner, K. Christopher Garcia, Ton N. Schumacher, Peter A. van Veelen, Matthias Leisegang, Sten Eirik W. Jacobsen, Petter Woll, Johanna Olweus
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Nature Biotechnology, 40, 488-498. NATURE PORTFOLIO
Nature Biotechnology
ISSN: 1087-0156
Popis: Unlike chimeric antigen receptors, T-cell receptors (TCRs) can recognize intracellular targets presented on human leukocyte antigen (HLA) molecules. Here we demonstrate that T cells expressing TCRs specific for peptides from the intracellular lymphoid-specific enzyme terminal deoxynucleotidyl transferase (TdT), presented in the context of HLA-A*02:01, specifically eliminate primary acute lymphoblastic leukemia (ALL) cells of T- and B-cell origin in vitro and in three mouse models of disseminated B-ALL. By contrast, the treatment spares normal peripheral T- and B-cell repertoires and normal myeloid cells in vitro, and in vivo in humanized mice. TdT is an attractive cancer target as it is highly and homogeneously expressed in 80-94% of B- and T-ALLs, but only transiently expressed during normal lymphoid differentiation, limiting on-target toxicity of TdT-specific T cells. TCR-modified T cells targeting TdT may be a promising immunotherapy for B-ALL and T-ALL that preserves normal lymphocytes.Engineered T cells kill leukemic cells with little off-target toxicity.
Databáze: OpenAIRE
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