Development of minimum-invasive oral cancer therapy using photo-immunotherapy targeted on cancer stem cells

• Project/Area Number: 26463028
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Surgical dentistry
• Research Institution: Tsurumi University
• Principal Investigator: Tatehara Seiko 鶴見大学, 歯学部, 講師 (90380089)
• Co-Investigator(Kenkyū-buntansha): 井出 信次 鶴見大学, 歯学部, 助教 (00611998) ; 徳山 麗子 鶴見大学, 歯学部, 助教 (20380090) ; 里村 一人 鶴見大学, 歯学部, 教授 (80243715)
• Research Collaborator: UMEKI Yasuchika ; TADOKORO Susumu ; TAKEBE Yusuke ; YOKOTA Toshio
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 口腔癌 / 低侵襲治療 / 光線免疫療法 / がん幹細胞 / 標的癌治療 / 光線療法

Outline of Final Research Achievements

The aim of this research was to develop photo-immunotheray (PIT) targeting in cancer stem cells of oral cancer. The equipment for irradiation of near-infrared light and the phthalocyanine-anti CD44v9 antibody composite (F-antiCD44v9) were prepared. We performed the PIT using F-antiCD44v9 on human oral observed that PIT destroyed the cell membrane of cancer cells by PIT. However, PIT did not have anti-tumor effect on the cancer cells which forms the spheroids like a solid cancer.