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Heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific CD8 T cell attack

Therapeutic vaccination regimens inducing clinically effective tumor-specific CD8(+) T lymphocyte (CTL) responses are an unmet medical need. We engineer two distantly related arenaviruses, Pichinde virus and lymphocytic choriomeningitis virus, for therapeutic cancer vaccination. In mice, life-replic...

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Autores principales: Bonilla, Weldy V., Kirchhammer, Nicole, Marx, Anna-Friederike, Kallert, Sandra M., Krzyzaniak, Magdalena A., Lu, Min, Darbre, Stéphanie, Schmidt, Sarah, Raguz, Josipa, Berka, Ursula, Vincenti, Ilena, Pauzuolis, Mindaugas, Kerber, Romy, Hoepner, Sabine, Günther, Stephan, Magnus, Carsten, Merkler, Doron, Orlinger, Klaus K., Zippelius, Alfred, Pinschewer, Daniel D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7974551/
https://www.ncbi.nlm.nih.gov/pubmed/33763654
http://dx.doi.org/10.1016/j.xcrm.2021.100209
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author Bonilla, Weldy V.
Kirchhammer, Nicole
Marx, Anna-Friederike
Kallert, Sandra M.
Krzyzaniak, Magdalena A.
Lu, Min
Darbre, Stéphanie
Schmidt, Sarah
Raguz, Josipa
Berka, Ursula
Vincenti, Ilena
Pauzuolis, Mindaugas
Kerber, Romy
Hoepner, Sabine
Günther, Stephan
Magnus, Carsten
Merkler, Doron
Orlinger, Klaus K.
Zippelius, Alfred
Pinschewer, Daniel D.
author_facet Bonilla, Weldy V.
Kirchhammer, Nicole
Marx, Anna-Friederike
Kallert, Sandra M.
Krzyzaniak, Magdalena A.
Lu, Min
Darbre, Stéphanie
Schmidt, Sarah
Raguz, Josipa
Berka, Ursula
Vincenti, Ilena
Pauzuolis, Mindaugas
Kerber, Romy
Hoepner, Sabine
Günther, Stephan
Magnus, Carsten
Merkler, Doron
Orlinger, Klaus K.
Zippelius, Alfred
Pinschewer, Daniel D.
author_sort Bonilla, Weldy V.
collection PubMed
description Therapeutic vaccination regimens inducing clinically effective tumor-specific CD8(+) T lymphocyte (CTL) responses are an unmet medical need. We engineer two distantly related arenaviruses, Pichinde virus and lymphocytic choriomeningitis virus, for therapeutic cancer vaccination. In mice, life-replicating vector formats of these two viruses delivering a self-antigen in a heterologous prime-boost regimen induce tumor-specific CTL responses up to 50% of the circulating CD8 T cell pool. This CTL attack eliminates established solid tumors in a significant proportion of animals, accompanied by protection against tumor rechallenge. The magnitude of CTL responses is alarmin driven and requires combining two genealogically distantly related arenaviruses. Vector-neutralizing antibodies do not inhibit booster immunizations by the same vector or by closely related vectors. Rather, CTL immunodominance hierarchies favor vector backbone-targeted responses at the expense of self-reactive CTLs. These findings establish an arenavirus-based immunotherapy regimen that allows reshuffling of immunodominance hierarchies and breaking self-directed tolerance for efficient tumor control.
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spelling pubmed-79745512021-03-23 Heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific CD8 T cell attack Bonilla, Weldy V. Kirchhammer, Nicole Marx, Anna-Friederike Kallert, Sandra M. Krzyzaniak, Magdalena A. Lu, Min Darbre, Stéphanie Schmidt, Sarah Raguz, Josipa Berka, Ursula Vincenti, Ilena Pauzuolis, Mindaugas Kerber, Romy Hoepner, Sabine Günther, Stephan Magnus, Carsten Merkler, Doron Orlinger, Klaus K. Zippelius, Alfred Pinschewer, Daniel D. Cell Rep Med Article Therapeutic vaccination regimens inducing clinically effective tumor-specific CD8(+) T lymphocyte (CTL) responses are an unmet medical need. We engineer two distantly related arenaviruses, Pichinde virus and lymphocytic choriomeningitis virus, for therapeutic cancer vaccination. In mice, life-replicating vector formats of these two viruses delivering a self-antigen in a heterologous prime-boost regimen induce tumor-specific CTL responses up to 50% of the circulating CD8 T cell pool. This CTL attack eliminates established solid tumors in a significant proportion of animals, accompanied by protection against tumor rechallenge. The magnitude of CTL responses is alarmin driven and requires combining two genealogically distantly related arenaviruses. Vector-neutralizing antibodies do not inhibit booster immunizations by the same vector or by closely related vectors. Rather, CTL immunodominance hierarchies favor vector backbone-targeted responses at the expense of self-reactive CTLs. These findings establish an arenavirus-based immunotherapy regimen that allows reshuffling of immunodominance hierarchies and breaking self-directed tolerance for efficient tumor control. Elsevier 2021-03-03 /pmc/articles/PMC7974551/ /pubmed/33763654 http://dx.doi.org/10.1016/j.xcrm.2021.100209 Text en © 2021 The Author(s) http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bonilla, Weldy V.
Kirchhammer, Nicole
Marx, Anna-Friederike
Kallert, Sandra M.
Krzyzaniak, Magdalena A.
Lu, Min
Darbre, Stéphanie
Schmidt, Sarah
Raguz, Josipa
Berka, Ursula
Vincenti, Ilena
Pauzuolis, Mindaugas
Kerber, Romy
Hoepner, Sabine
Günther, Stephan
Magnus, Carsten
Merkler, Doron
Orlinger, Klaus K.
Zippelius, Alfred
Pinschewer, Daniel D.
Heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific CD8 T cell attack
title Heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific CD8 T cell attack
title_full Heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific CD8 T cell attack
title_fullStr Heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific CD8 T cell attack
title_full_unstemmed Heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific CD8 T cell attack
title_short Heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific CD8 T cell attack
title_sort heterologous arenavirus vector prime-boost overrules self-tolerance for efficient tumor-specific cd8 t cell attack
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7974551/
https://www.ncbi.nlm.nih.gov/pubmed/33763654
http://dx.doi.org/10.1016/j.xcrm.2021.100209
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