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Understanding of the impact of infection microenvironment in HIV reactivation and cell-to-cell transmission

Research Project

Project/Area Number 20H03498
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49060:Virology-related
Research InstitutionYokohama City University

Principal Investigator

RYO Akihide  横浜市立大学, 医学研究科, 客員教授 (20363814)

Co-Investigator(Kenkyū-buntansha) 中林 潤  東京医科歯科大学, 統合教育機構, 教授 (80322733)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2021: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2020: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
KeywordsHIV / エイズ / 感染症 / 微小環境 / 宿主因子 / AIDS / 二次リンパ組織 / HIV
Outline of Research at the Start

本研究課題では、複数の細胞種が積層された生体環境に近い構造を持つ3次元感染細胞培養モデルを用いて、潜伏感染細胞からのウイルスの再活性化や細胞間伝播を可視化・定量化することで、ストレス刺激に伴うウイルスの挙動をリアルタイムに解析する。 取得したデータを基に数理モデルを構築し、不均一な細胞集団下でのHIV伝播予測や薬効予測に役立てる。また、ウイルスの挙動変化を規定する責任因子をマルチオミクス解析により包括的に明らかにすることで、HIV伝播を制御する新たな分子機構の解明と、根治を目指した新規治療法の創出を目指す。

Outline of Final Research Achievements

In this research project, we found that treatment of three-dimensional infected cell models with type I interferon markedly reduced the amount of viral cell-to-cell spread from infected to uninfected cells. A protein-protein interaction analysis revealed that the transmembrane protein MAL accumulated HIV-1 Gag protein in the host endosomal compartment, leading to its degradation in lysosomes. We searched for host factors that are cleaved by HIV-encoded proteases. We found that PR specifically cleaved the TBK1 and markedly reduced the kinase activity of TBK1. In fact, in HIV PR-expressing cells, nuclear translocation of IRF3 and production of type I IFN were reduced upon innate immune signals. We analyzed the molecular mechanism of HIV-2 latency under hypoxia and found that the hypoxia-inducible factor HIF-1α induces multiple long non-coding RNAs bound to the transcriptional regulatory region of HIV-2 and suppressed HIV-2 gene expression through an epigenetic regulatory mechanism.

Academic Significance and Societal Importance of the Research Achievements

HIV感染症は死亡率が劇的に改善したが、体内に残存するHIV潜伏感染細胞がしばしば再活性化するため根治療法は未だ存在しない。3次元微小環境培養モデルを用いて、ウイルスの再活性化及び細胞間伝播を可視化・定量化し数理モデルを構築、また、ウイルスの挙動変化を規定する責任因子をマルチオミクス解析により包括的に明らかにすることで、HIV伝播を制御する新たな分子機構の解明とHIV感染症の根治を目指した新規治療法を創出することが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (11 results)

All 2023 2022 2021 2020 Other

All Journal Article (6 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (4 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] Integrated tandem affinity protein purification using the polyhistidine plus extra 4 amino acids (HiP4) tag system.2023

    • Author(s)
      Ino Y, Yamaoka Y, Tanaka K, Miyakawa K, Nishi M, Hatayama Y, Kimura H, Kimura Y, Ryo A.
    • Journal Title

      Proteomics

      Volume: e2200334 Issue: 11 Pages: 1275519-1275519

    • DOI

      10.1002/pmic.202200334

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of a Monoclonal Antibody Targeting HTLV-1 Envelope gp46 Glycoprotein and Its Application to Near-Infrared Photoimmuno-Antimicrobial Strategy.2022

    • Author(s)
      Hatayama Y, Yamaoka Y, Morita T, Jeremiah SS, Miyakawa K, Nishi M, Kimura Y, Mitsunaga M, Iwase T, Kimura H, Yamamoto N, Takaori-Kondo A, Hasegawa H, Ryo A.
    • Journal Title

      Viruses

      Volume: 14(10) Issue: 10 Pages: 2153-2153

    • DOI

      10.3390/v14102153

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Antimicrobial strategy for targeted elimination of different microbes, including bacterial, fungal and viral pathogens.2022

    • Author(s)
      Mitsunaga M, Ito K, Nishimura T, Miyata H, Miyakawa K, Morita T, Ryo A, Kobayashi H, Mizunoe Y, Iwase T.
    • Journal Title

      Commun Biol

      Volume: 5(1) Issue: 1 Pages: 647-647

    • DOI

      10.1038/s42003-022-03586-4

    • Related Report
      2022 Annual Research Report
  • [Journal Article] MAL inhibits the production of HIV-1 particles by sequestering Gag to intracellular endosomal compartments.2022

    • Author(s)
      Miyakawa K, Nishi M, Jeremiah SS, Morikawa Y, Ryo A
    • Journal Title

      Frontiers in virology

      Volume: 2 Pages: 836125-836125

    • DOI

      10.3389/fviro.2022.836125

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cleavage of TANK-Binding Kinase 1 by HIV-1 Protease Triggers Viral Innate Immune Evasion.2021

    • Author(s)
      Jeremiah SS, Miyakawa K, Matsunaga S, Nishi M, Kudoh A, Takaoka A, Sawasaki T, Ryo A.
    • Journal Title

      Front Microbiol.

      Volume: 12 Pages: 643407-643407

    • DOI

      10.3389/fmicb.2021.643407

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of four phosphopeptide enrichment strategies for mass spectrometry‐based proteomic analysis2021

    • Author(s)
      Ino Yoko、Kinoshita Eiji、Kinoshita‐Kikuta Emiko、Akiyama Tomoko、Nakai Yusuke、Nishino Kohei、Osada Makoto、Ryo Akihide、Hirano Hisashi、Koike Tohru、Kimura Yayoi
    • Journal Title

      PROTEOMICS

      Volume: 22 Issue: 7 Pages: 2100216-2100216

    • DOI

      10.1002/pmic.202100216

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ビトリゲル膜を介した両面培養による中枢神経系原発悪性リンパ腫細胞と脳血管周皮細胞との相互作用解析2022

    • Author(s)
      西 真由子,立石健祐, 中居佑介, 巳鼻悠作, 木村弥生, 山本哲哉, 梁 明秀
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] アルファスクリーンを用いた血清中の抗HTLV-1抗体測定法の開発2021

    • Author(s)
      舩橋 利佳子, 鈴木 智津, 山岡 悠太郎, 宮川 敬, 木村 弥生, 梁 明秀
    • Organizer
      第72回日本電気泳動学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 新型コロナウイルス感染症に対する新たな検査法の開発と実用化2021

    • Author(s)
      梁 明秀
    • Organizer
      第35回日本エイズ学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] E3 Ubiquitin Ligase VHL negatively regulates HIV-2 Vpx.2020

    • Author(s)
      Tanaka K, Miyakawa K, Ino Y, Shin J, Kimura Y, Ryo A
    • Organizer
      The 34th Annual Meeting of the Japanese Society for AIDS Research
    • Related Report
      2020 Annual Research Report
  • [Remarks]

    • URL

      https://ryolab.wixsite.com/ycu-microbiology

    • Related Report
      2021 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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