Δ133p53α enhances metabolic and cellular fitness of TCR-engineered T cells and promotes superior antitumor immunity
Background Tumor microenvironment-associated T cell senescence is a key limiting factor for durable effective cancer immunotherapy. A few studies have demonstrated the critical role of the tumor suppressor TP53-derived p53 isoforms in cellular senescence process of non-immune cells. However, their r...
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| Hauptverfasser: | , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 June 2021
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| In: |
Journal for ImmunoTherapy of Cancer
Year: 2021, Jahrgang: 9, Heft: 6, Pages: 1-15 |
| ISSN: | 2051-1426 |
| DOI: | 10.1136/jitc-2020-001846 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1136/jitc-2020-001846 Verlag, lizenzpflichtig, Volltext: https://jitc.bmj.com/content/9/6/e001846 
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| Verfasserangaben: | Kevin Jan Legscha, Edite Antunes Ferreira, Antonios Chamoun, Alexander Lang, Mohamed Hemaid Sayed Awwad, Gigi Nu Hoang Quy Ton, Danuta Galetzka, Borhane Guezguez, Michael Hundemer, Jean-Christophe Bourdon, Markus Munder, Matthias Theobald, Hakim Echchannaoui |
MARC
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| 245 | 1 | 0 | |a Δ133p53α enhances metabolic and cellular fitness of TCR-engineered T cells and promotes superior antitumor immunity |c Kevin Jan Legscha, Edite Antunes Ferreira, Antonios Chamoun, Alexander Lang, Mohamed Hemaid Sayed Awwad, Gigi Nu Hoang Quy Ton, Danuta Galetzka, Borhane Guezguez, Michael Hundemer, Jean-Christophe Bourdon, Markus Munder, Matthias Theobald, Hakim Echchannaoui |
| 246 | 3 | 3 | |a Delta one hundred thirty-three p fifty-three alpha enhances metabolic and cellular fitness of TCR-engineered T cells and promotes superior antitumor immunity |
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| 520 | |a Background Tumor microenvironment-associated T cell senescence is a key limiting factor for durable effective cancer immunotherapy. A few studies have demonstrated the critical role of the tumor suppressor TP53-derived p53 isoforms in cellular senescence process of non-immune cells. However, their role in lymphocytes, in particular tumor-antigen (TA) specific T cells remain largely unexplored. - Methods Human T cells from peripheral blood were retrovirally engineered to coexpress a TA-specific T cell receptor and the Δ133p53α-isoform, and characterized for their cellular phenotype, metabolic profile and effector functions. - Results Phenotypic analysis of Δ133p53α-modified T cells revealed a marked reduction of the T-cell inhibitory molecules (ie, CD160 and TIGIT), a lower frequency of senescent-like CD57+ and CD160+ CD8+ T cell populations, and an increased number of less differentiated CD28+ T cells. Consistently, we demonstrated changes in the cellular metabolic program toward a quiescent T cell state. On a functional level, Δ133p53α-expressing T cells acquired a long-term proliferative capacity, showed superior cytokine secretion and enhanced tumor-specific killing in vitro and in mouse tumor model. Finally, we demonstrated the capacity of Δ133p53α to restore the antitumor response of senescent T cells isolated from multiple myeloma patients. - Conclusion This study uncovered a broad effect of Δ133p53α isoform in regulating T lymphocyte function. Enhancing fitness and effector functions of senescent T cells by modulation of p53 isoforms could be exploited for future translational research to improve cancer immunotherapy and immunosenescence-related diseases. | ||
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