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Enhancement of the antitumor effect of allogeneic NK cells by inhibition of TGF-beta pathway

Research Project

Project/Area Number 18K07874
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionUniversity of Yamanashi

Principal Investigator

GOI Kumiko  山梨大学, 大学院総合研究部, 講師 (70324192)

Co-Investigator(Kenkyū-buntansha) 大城 浩子  山梨大学, 大学院総合研究部, 医学研究員 (50377537)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsNK細胞 / 小児難治性腫瘍 / TGF-β / TGF-β阻害剤 / 小児難治性固形腫瘍 / 小児悪性腫瘍 / 抗腫瘍効果 / TGF-β / さい帯血
Outline of Final Research Achievements

In this study, we investigated the effects of TGF-β pathway inhibition on direct antitumor activity and enhancement of antitumor activity by NK cells. In malignant rhabdoid tumor cell lines, the addition of TGF-βR inhibitor resulted in mild enhancement of NK cell activation receptor ligand expression. However, neither direct antitumor effect nor enhancement of antitumor effect by cord blood NK cells was observed.

Academic Significance and Societal Importance of the Research Achievements

本研究では、同種血液幹細胞移植後のNK細胞の抗腫瘍活性の増強による小児難治性固形腫瘍の治療成績の向上を目指すものであった。TGF-βは小児難治性腫瘍細胞株自体が産生しており、その経路の遮断は抗腫瘍活性とNK細胞による免疫的な抗腫瘍効果の増強をもたらす可能性が示唆されていたが、今回の研究では、少なくともin vitroではその抗腫瘍効果は明らかでなく、現段階では、TGF-β受容体阻害剤の抗腫瘍効果は限定的であると考えられた。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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