2018 Fiscal Year Final Research Report
Combination of telomerase-specific oncolytic adenovirus and immune checkpoint inhibitor
Project/Area Number |
16K19893
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
General surgery
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Research Institution | Okayama University |
Principal Investigator |
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Keywords | 腫瘍融解アデノウイルス / 抗PD-1抗体 / 免疫チェックポイント阻害剤 / 複合免疫療法 / 免疫原性細胞死 |
Outline of Final Research Achievements |
Telomerase-specific oncolytic adenovirus facilitated CD8-positive cytotoxic T lymphocytes recruitment into tumor tissues through immunogenic cell death induction after intratumoral administration, leading to activation of systemic antitumor immune responses. Combination therapy with PD-1 Ab created synergistic antitumor effects that even led to tumor eradication. These findings support the contention that novel therapeutic strategies employing oncolytic virotherapy are ideal partners for immune checkpoint inhibitors and that this combination can yield improved clinical benefits for patients with advanced tumors with distant metastases.
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Free Research Field |
消化器外科
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Academic Significance and Societal Importance of the Research Achievements |
新規治療法である腫瘍融解アデノウイルス療法は、強力に宿主の抗腫瘍免疫を活性化する治療法であり、抗腫瘍免疫のブレーキを解除することで治療効果を発揮する抗PD-1抗体などの免疫チェックポイント阻害剤との併用は理想的な治療戦略である。腫瘍に対するウイルスの局所治療が全身性の抗腫瘍免疫を活性化することから、遠隔転移部における抗腫瘍効果の増強にもつながり、さらなる治療成績の改善が期待される。
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