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Molecular mechanism for polarized trafficking and budding of HIV in infectious synapses

Research Project

Project/Area Number 16K08818
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Morikawa Yuko  北里大学, 感染制御科学府, 教授 (20191017)

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: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsHIV / Gag / 輸送 / 感染シナプス / サイトカイン / 細胞骨格系 / 感染症 / ウイルス学 / 免疫学
Outline of Final Research Achievements

HIV infected cells form an adhesive structure with target cells, termed infectious synapse, leading to efficient transmission of HIV. The present study showed that HIV uses Qc-SNARE (Syntaxin, SNAP)-mediated secretion pathways for cytokines (e.g., TNF, IL-2) in immunological synapse for intracellular trafficking of HIV Gag protein. These results may explain suppressive immune responses in HIV infected cells. The study revealed that Gag and Syntaxin were cotransported and suggested that they were transiently interacted with clathrin adapters (APs) and an ESCRT-I molecule TSG101 during the transport pathways.

Academic Significance and Societal Importance of the Research Achievements

免疫細胞は抗原提示細胞と免疫シナプスと呼ばれる接着構造を形成し、サイトカインを分泌して免疫応答を誘導する。HIVはTリンパ球に感染して免疫機能不全をおこすが、HIV感染Tリンパ球は非感染Tリンパ球と接触すると、シナプス様の接着構造を形成してHIVを伝播する。本研究では、Tリンパ球におけるサイトカイン分泌経路を利用してHIV Gag蛋白が細胞内輸送されることを示唆した。この結果はHIV感染による免疫応答抑制を説明しうる。また、Gag蛋白がサイトカイン分泌に関与する分子により輸送される過程で、様々な宿主因子と相互作用する可能性を示唆した。

Report

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

    (14 results)

All 2018 2017 2016

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results,  Acknowledgement Compliant: 3 results) Presentation (10 results)

  • [Journal Article] The tumour suppressor APC promotes HIV-1 assembly via interaction with Gag precursor protein.2017

    • Author(s)
      Miyakawa K, Nishi M, Matsunaga S, Okayama A, Anraku M, Kudoh A, Hirano H, Kimura H, Morikawa Y, Yamamoto N, Ono A, Ryo A.
    • Journal Title

      Nature Communications

      Volume: 8 Issue: 1 Pages: 14259-14259

    • DOI

      10.1038/ncomms14259

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] FRET analysis of HIV-1 Gag and GagPol interactions2017

    • Author(s)
      Takagi S, Momose F, Morikawa Y
    • Journal Title

      FEBS Open Bio

      Volume: 7 Issue: 11 Pages: 1815-1825

    • DOI

      10.1002/2211-5463.12328

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Polycistronic Expression of the Influenza A Virus RNA-Dependent RNA Polymerase by Using the Thosea asigna Virus 2A-Like Self-Processing Sequence.2016

    • Author(s)
      Fumitaka Momose, Yuko Morikawa
    • Journal Title

      Frontiers in Microbiology

      Volume: 7 Pages: 288-288

    • DOI

      10.3389/fmicb.2016.00288

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Influenza A virus Hemagglutinin is required for the assembly of viral components including bundled vRNPs at the lipid raft.2016

    • Author(s)
      Takizawa N, Momose F, Morikawa Y, Nomoto A.
    • Journal Title

      Viruses

      Volume: 8 Issue: 9 Pages: 249-249

    • DOI

      10.3390/v8090249

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Establishment of in vitro transendothelial migration system of T cells for lymph node homing analysis of latently HIV-infected cells2018

    • Author(s)
      Tanabe R, Momose F, Morikawa Y
    • Organizer
      日本ウイルス学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Kinetic behaviors of latently HIV-infected cells in coculture with stromal cells2018

    • Author(s)
      Minakawa S, Momose F, Morikawa Y
    • Organizer
      日本ウイルス学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] HIV-1 Nef expression causes T cell kinetic changing2018

    • Author(s)
      Inanaga M, Momose F, Morikawa Y
    • Organizer
      日本ウイルス学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] HIV-1 粒子産生における後期エンドソーム分子Rab7及びRab9の関与2018

    • Author(s)
      Ogawa K, Momose F, Morikawa Y
    • Organizer
      日本ウイルス学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Kinetic changes of cells upon HIV-1 Nef expression2017

    • Author(s)
      Inanaga M, Momose F, Morikawa Y
    • Organizer
      日本ウイルス学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Kinetic analysis of HIV latently infected cells2017

    • Author(s)
      Minakawa S, Momose F, Morikawa Y
    • Organizer
      日本ウイルス学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Accessibility assessment of the terminal region of influenza A virus genome segments by fluorescence in situ hybridization2017

    • Author(s)
      Momose F, Morikawa Y
    • Organizer
      日本ウイルス学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Co-transport mechanisms of influenza virus HA and NA for the apical plasma membrane2017

    • Author(s)
      Kamei T, Momose F, Morikawa Y
    • Organizer
      日本ウイルス学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Identification of intracellular trafficking pathways of HIV-1 Env and Gag proteins by using Rab proteins2016

    • Author(s)
      Hagiwara S, Momose F, Matsuda Z, Morikawa Y
    • Organizer
      第64回日本ウイルス学会学術集会
    • Place of Presentation
      横浜
    • Year and Date
      2016-10-23
    • Related Report
      2016 Research-status Report
  • [Presentation] Elucidation of action mechanism of heterocyclic compound BMMP having anti-HIV activity2016

    • Author(s)
      Kamo M, Tateishi H, Yamamoto M, Okamoto Y, Morikawa Y, Misumi S, Otsuka M, Fujita M
    • Organizer
      第64回日本ウイルス学会学術集会
    • Place of Presentation
      横浜
    • Year and Date
      2016-10-23
    • Related Report
      2016 Research-status Report

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

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