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Analysis of Epstein-Barr virus derived RNA in CAEBV: involvement in onset and potential therapeutic targets

Research Project

Project/Area Number 19K23907
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionSt. Marianna University School of Medicine

Principal Investigator

Ohashi Ayaka  聖マリアンナ医科大学, 医学研究科, 特任助教 (60844371)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords慢性活動性EBウイルス感染症 / エクソソーム / miR-BARTs / 血管内皮細胞 / RNase1 / マイクロRNA / 傍腫瘍細胞 / サイトカイン / RNase 1 / RNase inhibitor
Outline of Research at the Start

慢性活動性EBウイルス感染症(CAEBV)は治療抵抗性EBV陽性T, NK細胞腫瘍である。申請者らはEBV陽性B細胞腫瘍の発症と病態形成に関与するmiR-BARTsの網羅的発現をCAEBV由来細胞株でも確認した。そこでCAEBV発症におけるこれらのmiR-BARTsの機能を、細胞内の発現と分泌に注目し、CAEBV細胞株と臨床試料を用いて解明する。また、CAEBV患者細胞においてマイクロRNAを含むEBV由来小RNAを制御し得るRNase 1とその阻害因子RNase inhibitor (RI)の発現亢進を観察したため、それらの機能を解析する。

Outline of Final Research Achievements

It was confirmed that cell lines of Chronic Active EB virus infection (CAEBV) and related diseases secreted exosomes containing the largest amount of miR-BART7-3p, which is an EBV-derived micro RNA. We confirmed the uptake of exosomes containing miR-BARTs in vascular endothelial cells. This indicated that miR-BARTs contained in exosomes might form a pathological condition in surrounding non-infected cells such as vascular endothelial cells. We also confirmed high expression of RNase1 which has RNA degrading action and RNase inhibitor (RI) which inhibits RNase in cell lines such as CAEBV and patient cells. It was speculated that it might play a role in the pathology of CAEBV.

Academic Significance and Societal Importance of the Research Achievements

CAEBV等細胞株で高い発現が見られたmiR-BART7-3pはCAEBV患者の感染細胞及び血漿中でも高発現しており、CAEBVの発症及び病態形成に関与することを示唆すると共に、治療標的になり得ると考えられた。本研究成果はCAEBVの発症及び病態の解明に寄与すると共に、miR-BARTs等RNAに着目した全く新しい治療法、バイオマーカーの開発に貢献し得る。今後、miR-BARTsとRNase1のinteractionについてさらなる研究を行い、臨床への還元を目指す。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Antineoplastic and anti-inflammatory effects of bortezomib on systemic chronic active EBV infection2021

    • Author(s)
      Yoshimori Mayumi、Shibayama Haruna、Imadome Ken-Ichi、Kawano Fuyuko、Ohashi Ayaka、Nishio Miwako、Shimizu Norio、Kurata Morito、Fujiwara Shigeyoshi、Arai Ayako
    • Journal Title

      Blood Advances

      Volume: 5 Issue: 7 Pages: 1805-1815

    • DOI

      10.1182/bloodadvances.2020002417

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Products of EBV-Positive Neoplastic NK-Cells Induce Differentiation into Macrophages and Procoagulant Activity of Monocytes, which Leads to HLH2020

    • Author(s)
      Mayumi Yoshimori, Megumi Tateishi, Ayaka Ohashi, Shixing Wu, Ken-Ichi Imadome, Norio Shimizu, Miwako Nishio, Ayako Arai
    • Organizer
      25th Congress of European Hematology Association
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] EBV-Positive Neoplastic NK-Cells Induce Macrophage Differentiation from monocytes, Leading to HLH2020

    • Author(s)
      Mayumi Yoshimori, Megumi Tateishi, Ayaka Ohashi, Shixing Wu, Ken-Ichi Imadome, Norio Shimizu, Miwako Nishio, Ayako Arai
    • Organizer
      第82回日本血液学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] The Cytokines of EBV+Neoplastic NK-Cells Enhance the Procoagulant Activity of Monocytes Causing DIC2020

    • Author(s)
      Megumi Tateishi, Mayumi Yoshimori, Ayaka Ohashi, Shixing Wu, Norio Shimizu, Miwako Nishio, Ayako Arai
    • Organizer
      第82回日本血液学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] The Elucidation of Targets of EBV-Derived Micro-RNA in Chronic Active EBV Infection2020

    • Author(s)
      Wu Shixing, Mayumi Yoshimori, Megumi Tateishi, Ayaka Ohashi, Shimizu Norio, Miwako Nishi, Ayako Arai
    • Organizer
      第82回日本血液学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] The expression and the secretion of ribonuclease inhibitors by tumor and vascular endothelial cells2019

    • Author(s)
      大橋彩香
    • Organizer
      第81回日本血液学会学術集会
    • Related Report
      2019 Research-status Report

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Published: 2019-09-03   Modified: 2022-01-27  

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