Anti-PD-1 therapy activates tumoricidic properties of NKT cells and contributes to the overall deceleration of tumor progression in a model of murine mammary carcinoma

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dc.citation.epage773
dc.citation.spage764
dc.citation.volume79
dc.contributor.authorJovanović, Marina
dc.contributor.authorGajović, Nevena
dc.contributor.authorJurišević, Milena
dc.contributor.authorSekulić, Sofija
dc.contributor.authorArsenijević, Nebojša
dc.contributor.authorJocić, Midrag
dc.contributor.authorJovanović, Milan
dc.contributor.authorLukić, Ružica
dc.contributor.authorJovanović, Ivan
dc.contributor.authorRadovanović, Dragče
dc.date.accessioned2023-05-19T07:30:06Z
dc.date.available2023-05-19T07:30:06Z
dc.date.issued2022
dc.description.abstractBackground/Aim. Immune checkpoint therapy is a well-established therapeutic approach in the treatment of malig-nant diseases and is thought to be mostly based on facilitat-ing the adaptive immune response. However, the cells of the innate immune response, such as natural killer T (NKT) cells, might also be important for a successful anti-programmed cell death protein-1 (anti-PD-1) therapy, as they initiate the antitumor immune response. The aim of this study was to investigate the influence of anti-PD-1 therapy on the immune response against tumors. Methods. For tumor induction, 4T1 cells synergic to BALB/c back-ground were used, after which mice underwent anti-PD-1 treatment. After the mice were sacrificed, NKT cells, den-dritic cells (DCs), and macrophages derived from spleen and primary tumor tissue were analyzed using flow cytome-try. Results. Anti-PD-1 therapy enhanced the expression of activating molecules CD69, NKp46, and NKG2D in NKT cells of the tumor and spleen. This therapy activated NKT cells directly and indirectly via DCs. Activated NKT cells acquired tumoricidic properties directly, by secreting perfor-in, and indirectly by stimulating M1 macrophages polariza-tion. Conclusion. Anti-PD-1 therapy activates changes in DCs and macrophages of primary tumor tissue towards protumoricidic activity. Since anti-PD-1 therapy induces significant changes in NKT cells, DCs, and macrophages, the efficacy of the overall antitumor response is increased and has significantly decelerated tumor growth.
dc.identifier.doi10.2298/VSP210126039J
dc.identifier.urihttps://vaseljena.ues.rs.ba/handle/123456789/176
dc.language.isoen
dc.publisherUniversity of Defense, Ministry of Defence of the Republic of Serbia, Belgrade, Serbia
dc.subjectantineoplastic agents; breast neoplasms; immunomodulation; killer cell, natural; macrophages; mice
dc.titleAnti-PD-1 therapy activates tumoricidic properties of NKT cells and contributes to the overall deceleration of tumor progression in a model of murine mammary carcinoma
dc.typeArticle
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