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2020 Fiscal Year Final Research Report

Radioimmunotherapy with Anti-podoplanin cancer-specific monoclonal antibody

Research Project

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Project/Area Number 18K07778
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionNational Institutes for Quantum and Radiological Science and Technology

Principal Investigator

Sudo Hitomi  国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 分子イメージング診断治療研究部, 主任研究員(任常) (10415416)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywordsポドプラニン / 放射免疫療法
Outline of Final Research Achievements

Radioimmunotherapy (RIT) is a selective internal radiation therapy using radiolabeled monoclonal antibodies against tumor-associated antigens. In this study, we radiolabeled antibodies which recognized cancer specific podoplanin and evaluated the potential of podoplanin-targeted RIT using mouse model. Giving 90Y- and 225Ac-labeled anti-podoplanin antibodies showed markedly antitumor effect without obvious adverse effects. These results suggests that the radiolabeled anti-podoplanin antibody is a promising RIT agent as a new therapeutic option for podoplanin-expressing tumors.

Free Research Field

核医学

Academic Significance and Societal Importance of the Research Achievements

マウス皮下腫瘍と比較して、患者由来組織でのポドプラニンの発現は高い傾向にあったことから、この抗体を用いたRITは中皮腫患者ではより高い治療効果が期待できる。RI標識した本抗体が臨床応用されれば、中皮腫の新たな画期的な治療法となるだろう。また、ポドプラニンは脳腫瘍など様々ながんで高発現していることが報告されており、本抗体を用いたRITが中皮腫以外の固形がんの治療にも応用が可能であり、難治性固形がんの治療法開発に大きな進展をもたらすと期待される。

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Published: 2022-01-27  

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