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2023 Fiscal Year Final Research Report

Systemic delivery of oncolytic vaccinia virus to tumors

Research Project

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Project/Area Number 21K19911
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 90:Biomedical engineering and related fields
Research InstitutionTottori University

Principal Investigator

NAKAMURA Takafumi  鳥取大学, 医学部, 教授 (70432911)

Project Period (FY) 2021-07-09 – 2023-03-31
Keywordsがん / ウイルス療法 / 免疫回避 / ドラッグデリバリー
Outline of Final Research Achievements

Based on the property of vaccinia virion covered with a host-derived outer membrane, partial deletion of glycoprotein enhanced neutralization escape without affecting the oncolytic potency of the virions, and introduction of mutation into viral protein increased productivity of the virions. By combining these improvements with the construction of a simple and efficient manufacturing process, we successfully prepared high titer solution of the virions and showed the possibility of systemic delivery of oncolytic vaccinia virus to tumors in mice.

Free Research Field

遺伝子治療学

Academic Significance and Societal Importance of the Research Achievements

ウイルス療法は、局所療法が全身のがんにも治療効果を及ぼす革新的がん治療法であるが、ウイルス製剤の投与経路は主に腫瘍内であるため、体表にあるがんや超音波・CTガイド下で投与可能ながんに限定される。この問題を克服すべく本研究では、血管内投与により腫瘍に到達できるステルス型腫瘍溶解性ワクシニアウイルスを提案し、マウスモデルを用いて、あらゆるがん種をウイルス療法の対象とするための基盤技術となり得ることを示した。

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Published: 2025-01-30  

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