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Anti-tumor effects of arginine in three-dimensional cultured EBV-positive lymphoma cells

Research Project

Project/Area Number 22K20769
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0803:Pathology, infection/immunology, and related fields
Research InstitutionShiga University of Medical Science

Principal Investigator

Noujima Mai  滋賀医科大学, 医学部, 助教 (20961783)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsアルギニン / EBウイルス / 三次元培養 / リンパ腫 / EBウイルス陽性リンパ腫 / 3D培養
Outline of Research at the Start

アルギニンには腫瘍の増殖に関して相反する「促進効果」と「抑制効果」があり,がんの種類によってアルギニンの効果に違いがあることが明らかにされてきた.本研究では,EBウイルス(EBV)関連および非関連のリンパ腫細胞株を用いて,「アルギニン投与が細胞増殖にどのような影響を及ぼすか」「アルギニン投与によりアルギニン代謝関連蛋白の発現にどのような変化がみられるか」検証する.さらに,生体から得られた組織を用いて「リンパ腫組織でのアルギニン代謝関連蛋白の発現について」も検証する.これらにより,EBV関連リンパ腫の免疫逃避機序の解明および,アルギニン代謝改変に基づく新規治療法の開発を目指す.

Outline of Final Research Achievements

Two-dimensional culture of FL18 (EBV-negative lymphoma cell line) in arginine- and non-arginine-supplemented medium showed a trend toward a decrease in cell proliferative capacity in arginine concentration-dependent manner. This result suggests that arginine has a "tumor suppressive effect" in EBV-negative lymphomas.
We succeeded in three-dimensional culture of FL18 and obtained optimal culture conditions. We divided the FL18 into four groups: (1) two-dimensional culture in arginine-free medium, (2) two-dimensional culture in arginine-added medium, (3) three-dimensional culture in arginine-free medium, and (4) three-dimensional culture in arginine-added medium. The metabolomic analysis showed that the addition of arginine altered specific metabolic systems.

Academic Significance and Societal Importance of the Research Achievements

リンパ腫細胞株におけるアルギニン投与効果の検証は,リンパ腫の腫瘍微小環境の理解の一助となる.また,リンパ腫だけでなくその他悪性腫瘍においても,代謝改変に基づく新規治療法の発見に貢献しうると思われる.

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report

URL: 

Published: 2022-09-01   Modified: 2025-01-30  

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