Viral infection of cells within the tumor microenvironment mediates antitumor immunotherapy via selective TBK1-IRF3 signaling
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Viral infection of cells within the tumor microenvironment mediates antitumor immunotherapy via selective TBK1-IRF3 signaling. / Brown, Michael C; Mosaheb, Mubeen M; Mohme, Malte; McKay, Zachary P; Holl, Eda K; Kastan, Jonathan P; Yang, Yuanfan; Beasley, Georgia M; Hwang, E Shelley; Ashley, David M; Bigner, Darell D; Nair, Smita K; Gromeier, Matthias.
in: NAT COMMUN, Jahrgang 12, Nr. 1, 25.03.2021, S. 1858.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Viral infection of cells within the tumor microenvironment mediates antitumor immunotherapy via selective TBK1-IRF3 signaling
AU - Brown, Michael C
AU - Mosaheb, Mubeen M
AU - Mohme, Malte
AU - McKay, Zachary P
AU - Holl, Eda K
AU - Kastan, Jonathan P
AU - Yang, Yuanfan
AU - Beasley, Georgia M
AU - Hwang, E Shelley
AU - Ashley, David M
AU - Bigner, Darell D
AU - Nair, Smita K
AU - Gromeier, Matthias
PY - 2021/3/25
Y1 - 2021/3/25
N2 - Activating intra-tumor innate immunity might enhance tumor immune surveillance. Virotherapy is proposed to achieve tumor cell killing, while indirectly activating innate immunity. Here, we report that recombinant poliovirus therapy primarily mediates antitumor immunotherapy via direct infection of non-malignant tumor microenvironment (TME) cells, independent of malignant cell lysis. Relative to other innate immune agonists, virotherapy provokes selective, TBK1-IRF3 driven innate inflammation that is associated with sustained type-I/III interferon (IFN) release. Despite priming equivalent antitumor T cell quantities, MDA5-orchestrated TBK1-IRF3 signaling, but not NFκB-polarized TLR activation, culminates in polyfunctional and Th1-differentiated antitumor T cell phenotypes. Recombinant type-I IFN increases tumor-localized T cell function, but does not mediate durable antitumor immunotherapy without concomitant pattern recognition receptor (PRR) signaling. Thus, virus-induced MDA5-TBK1-IRF3 signaling in the TME provides PRR-contextualized IFN responses that elicit functional antitumor T cell immunity. TBK1-IRF3 innate signal transduction stimulates eventual function and differentiation of tumor-infiltrating T cells.
AB - Activating intra-tumor innate immunity might enhance tumor immune surveillance. Virotherapy is proposed to achieve tumor cell killing, while indirectly activating innate immunity. Here, we report that recombinant poliovirus therapy primarily mediates antitumor immunotherapy via direct infection of non-malignant tumor microenvironment (TME) cells, independent of malignant cell lysis. Relative to other innate immune agonists, virotherapy provokes selective, TBK1-IRF3 driven innate inflammation that is associated with sustained type-I/III interferon (IFN) release. Despite priming equivalent antitumor T cell quantities, MDA5-orchestrated TBK1-IRF3 signaling, but not NFκB-polarized TLR activation, culminates in polyfunctional and Th1-differentiated antitumor T cell phenotypes. Recombinant type-I IFN increases tumor-localized T cell function, but does not mediate durable antitumor immunotherapy without concomitant pattern recognition receptor (PRR) signaling. Thus, virus-induced MDA5-TBK1-IRF3 signaling in the TME provides PRR-contextualized IFN responses that elicit functional antitumor T cell immunity. TBK1-IRF3 innate signal transduction stimulates eventual function and differentiation of tumor-infiltrating T cells.
KW - Animals
KW - Breast Neoplasms/immunology
KW - CD8-Positive T-Lymphocytes/immunology
KW - Female
KW - Humans
KW - Immunity, Innate/immunology
KW - Interferon Regulatory Factor-3/immunology
KW - Interferon Type I/immunology
KW - Interferon-Induced Helicase, IFIH1/metabolism
KW - Lymphocytes, Tumor-Infiltrating/immunology
KW - Melanoma/immunology
KW - Mice
KW - Mice, Inbred C57BL
KW - Mice, Knockout
KW - NF-kappa B/metabolism
KW - Oncolytic Virotherapy
KW - Protein Serine-Threonine Kinases/immunology
KW - Signal Transduction/immunology
KW - Th1 Cells/immunology
KW - Tumor Microenvironment/immunology
U2 - 10.1038/s41467-021-22088-1
DO - 10.1038/s41467-021-22088-1
M3 - SCORING: Journal article
C2 - 33767151
VL - 12
SP - 1858
JO - NAT COMMUN
JF - NAT COMMUN
SN - 2041-1723
IS - 1
ER -