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The analysis on intracellular dynamics and morphology of HIV-1 RNA at a late stage of infection.

Research Project

Project/Area Number 16K08810
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Virology
Research InstitutionOsaka University

Principal Investigator

SAKURAGI JUNICHI  大阪大学, 微生物病研究所, 助教 (90273705)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsHIV / RNA / 構造 / RNA標識 / レンチウイルス / レトロウイルス / 細胞内動態 / ゲノムパッケージング / Psi / 高次構造 / パッケージング / 二量体化 / ゲノム動態 / ウイルスゲノム / 感染
Outline of Final Research Achievements

The genome of lentivirus including HIV is a positive sense single stranded RNA. The viral RNAs dimerize within virion connected each other by cis-RNA structure called dimer linkage structure (DLS). The reason, mechanism and process of dimerization are still unclear. In this research, I aimed to clarify the transition of a dynamic state and a morphology of lentiviral RNA in cell, from expression to virion packaging. This attempt will be achieved by the expansion of my research outcome so far. I planned this project for better understanding of the nature of lentiviruses.

Academic Significance and Societal Importance of the Research Achievements

1)DLS内の最重要部位であるHIV-1のSL1に関して、いくつかの新知見を見いだした。特にステム最基部及び最上部の塩基対は分子内対形成しておらず、最基部は分子間(二量体間)対形成している可能性を示唆。こうした知見を元に新規SL1構造モデルを提唱した。2)ウイルスゲノムRNA翻訳とパッケージングは連動しておらず、翻訳されたGag蛋白は鋳型RNAを直接リクルートしないことがレンチウイルス共通のドグマであることを初めて示した。
これまでに知られていなかったウイルスゲノムの普遍的性状を明らかにしたことによってレンチウイルスの深い理解と制圧に向けた基礎的知見を積み上げ、学術的にも社会的にも貢献した。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report

Research Products

(12 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (10 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Relationship between genome packaging and Gag translation/AUG of primate lentiviruses2019

    • Author(s)
      Sakuragi Sayuri、Shioda Tatsuo、Sakuragi Jun-ichi
    • Journal Title

      Microbes and Infection

      Volume: 21 Pages: 119-123

    • DOI

      10.1016/j.micinf.2018.09.002

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] SL1 revisited: functional analysis of the structure and conformation of HIV-1 genome RNA.2016

    • Author(s)
      Sakuragi S, Yokoyama M, Shioda T, Sato H, Sakuragi JI.
    • Journal Title

      Retrovirology.

      Volume: 13 Pages: 79-79

    • DOI

      10.1186/s12977-016-0310-9

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] The analysis of HIV-1 genomic packaging by comparison of subtype sequences.2018

    • Author(s)
      Sakuragi S, Kotani O, Yokoyama M, Shioda T, Sato H, Sakuragi J.
    • Organizer
      Cold Spring Harbor Laboratory 43rd annual meeting on Retroviruses
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Independent roles of SL3 stem-loop nucleotides on HIV-1 biological properties.2018

    • Author(s)
      Sakuragi J.
    • Organizer
      Frontiers in Retrovirology conference 2018, Leuven, Belgium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] HIV-1 Psi領域の機能構造に関する解析2018

    • Author(s)
      3)櫻木淳一・櫻木小百合・塩田達雄
    • Organizer
      第32回日本エイズ学会学術集会・総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] The analysis of HIV-1 genome packaging by comparison of subtype sequences.2017

    • Author(s)
      Jun-ichi Sakuragi
    • Organizer
      RETROPATH 2017 Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] The analysis of HIV-1 genome packaging by comparison of subtype sequences.2017

    • Author(s)
      櫻木淳一
    • Organizer
      日本ウイルス学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] HIV-1サブタイプ比較によるゲノムパッケージングに関する解析2017

    • Author(s)
      櫻木淳一
    • Organizer
      日本エイズ学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] HIV-1 Gag p1の機能的解析2016

    • Author(s)
      櫻木淳一・櫻木小百合・塩田達雄
    • Organizer
      第30回日本エイズ学会学術集会
    • Place of Presentation
      鹿児島
    • Year and Date
      2016-11-24
    • Related Report
      2016 Research-status Report
  • [Presentation] Functional Analysis of HIV-1 Gag p1.2016

    • Author(s)
      Jun-ichi Sakuragi, Sayuri Sakuragi, Tatsuo Shioda
    • Organizer
      第64回日本ウイルス学会学術集会
    • Place of Presentation
      札幌
    • Year and Date
      2016-10-23
    • Related Report
      2016 Research-status Report
  • [Presentation] SL1 revisited: Functional analysis of the structure and conformation of HIV-1 genome RNA.2016

    • Author(s)
      J.Sakuragi
    • Organizer
      10th IRNCAS
    • Place of Presentation
      Montpellier, France
    • Year and Date
      2016-09-18
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] SL1 revisited: Functional analysis of the structure and conformation of HIV-1 genome RNA.2016

    • Author(s)
      J.Sakuragi
    • Organizer
      Frontiers of Retrovirology Conference 2016
    • Place of Presentation
      Erlangen, Germany
    • Year and Date
      2016-09-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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