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2019 Fiscal Year Final Research Report

Exploration of novel G-protein coupled receptors involved in migration and activation of tumor-infiltrating lymphocytes

Research Project

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Project/Area Number 19K21325
Project/Area Number (Other) 18H06225 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0903:Organ-based internal medicine and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

SUMIDA Hayakazu  東京大学, 医学部附属病院, 講師 (30609706)

Project Period (FY) 2018-08-24 – 2020-03-31
Keywords腫瘍内浸潤リンパ球 / Gタンパク質共役型受容体
Outline of Final Research Achievements

This research project has focused on the CD8-positive tumor-infiltrating lymphocytes (TILs) with cytotoxic activity against cancer cells. In particular, some novel G-protein coupled receptors were considered to be involved in the infiltration and function of TILs based on preliminary experiments. Mice and several kinds of cancer cell lines were used for this project. Therefore, we not only examined the detailed mechanism but also planned to analyze cancer type specificity in this project.

Free Research Field

皮膚科学

Academic Significance and Societal Importance of the Research Achievements

近年、抗PD-1抗体をはじめとする免疫チェックポイント阻害薬がメラノーマなど種々の癌に対して有効であることが明らかとなり、癌病態における免疫細胞、特に腫瘍内浸潤リンパ球(TIL)の役割が注目されている。腫瘍免疫におけるTILの重要性はこれまでの知見から明らかであるが、TILが腫瘍内に浸潤するメカニズム、さらには、活性化の制御機構等について、わかっていないことが多い。そこで、本研究により詳細な機序を明らかにし、結果を新規治療開発に応用することができれば、将来、抗腫瘍効果をもつ免疫細胞の腫瘍への集積性改善や治療効果の向上につながることが期待され、その社会的意義は大きいと予想される。

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Published: 2021-02-19  

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