• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Identification of a novel immune evasion strategy of KSHV based on substrate specificity of ubiquitin ligase

Research Project

Project/Area Number 19K07595
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49060:Virology-related
Research InstitutionShowa Pharmaceutical University

Principal Investigator

Kajikawa Mizuho  昭和薬科大学, 薬学部, 講師 (00464389)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsウイルス / ユビキチン / ユビキチンリガーゼ / 免疫回避 / カポジ肉腫関連ヘルペスウイルス / C型レクチン
Outline of Research at the Start

免疫不全患者に重篤な腫瘍を引き起こすカポジ肉腫関連ヘルペスウイルス(KSHV)には、有効な抗ウイルス薬がない。KSHVはキラーT細胞やNK細胞による攻撃を回避することから、その免疫回避を阻害する方法が発見できれば、抗KSHV薬開発の切り口になると期待できる。しかしKSHVによる免疫回避の全容は未解明であることから、本研究では免疫回避を司る鍵分子であるウイルスユビキチンリガーゼの新たな基質探索を行い、免疫回避の全体像解明に迫る。

Outline of Final Research Achievements

Kaposi's sarcoma-associated herpesvirus (KSHV) causes malignant tumors in immunocompromised individuals. KSHV expresses viral ubiquitin ligases K3 and K5. Since these ligases mediates ubiquitin-dependent endocytosis of host immunoregulatory molecules, KSHV-infected cells can escape from host immune surveillance. Many membrane proteins have been discovered as substrate for K3 and K5; however, some substrates may remain undiscovered. Based on our knowledge about the substrate specificity of these ligases, we focused several membrane proteins as novel substrate candidate. In this study, L-selectin was identified as novel substrate for K3 and K5.

Academic Significance and Societal Importance of the Research Achievements

KSHVユビキチンリガーゼにとっての新たな基質の発見により、これまでに明らかになっていなかった、KSHV感染病態と白血球循環との関連性が浮かび上がってきた。このことは、KSHVによる新たな病態の詳細な解明や、KSHV治療薬の開発等の足掛かりになるかもしれない。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (1 results)

All 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results)

  • [Journal Article] Kaposi’s sarcoma-associated herpesvirus ubiquitin ligases downregulate cell surface expression of l-selectin2021

    • Author(s)
      Kajikawa Mizuho、Imaizumi Nanae、Machii Shiho、Nakamura Tomoka、Harigane Nana、Kimura Minako、Miyano Kei、Ishido Satoshi、Kanamoto Taisei
    • Journal Title

      Journal of General Virology

      Volume: 102 Issue: 11

    • DOI

      10.1099/jgv.0.001678

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi