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An analysis of HIV replication competence related to epidemic and disease development

Research Project

Project/Area Number 19K10600
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 58020:Hygiene and public health-related: including laboratory approach
Research InstitutionTottori University

Principal Investigator

KAGEYAMA Seiji  鳥取大学, 医学部, 教授 (60252706)

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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsHIV / エイズ / エイズ発症 / HIV流行 / 増殖能 / 抗HIV薬 / ヒト免疫不全ウイルス / 増殖能診断開発 / エイズ流行予防 / エイズ発症予防 / 責任遺伝子 / 純系ウイルス作成 / 増殖能責任遺伝子 / 細胞内制御因子 / 複製 / 増殖 / 薬剤耐性 / ウイルス増殖因子 / 発症 / 流行
Outline of Research at the Start

ヒト免疫不全ウイルス感染症対策には、流行規模の緩和とエイズ発症阻止の2つ課題解決のために、ウイルス株の性質が、流行規模やエイズ発症に影響するとの仮説を立てた。すなわち、「増殖力の高いウイルス株に感染した個体ではエイズを発症しやすく、このような個体が、流行規模を大きくする」と考えている。この課題を検証するため、近年感染者の増加が顕著なフィリピンをフィールドとし、フィリピン保健省と感染症中央病院との新たな共同研究を始める。

Outline of Final Research Achievements

A diagnosis system of growth capability of human immunodeficiency virus (HIV) strains has been developed because growth capability is one of the determinants of prognosis and prevalence. First, a wide variety of growth capability was recognized(Kageyama et al, JIAPAC 2019). Second, it has been recognized that some strains with high growth capability may not be suppressed by therapeutic anti-HIV drugs (Hinay et al, in preparation). Third, the responsible genes for growth capability have been investigated using two strains with different growth capability. Plasmids including complete HIV sequences of these two strains and was transfected into peripheral blood mononuclear cells. Two monoclonal HIV strains have been synthesized and therefore the initial step was done toward a development of the diagnosis system.

Academic Significance and Societal Importance of the Research Achievements

HIV感染症対策の目標は、エイズ発症予防や伝播効率の低下である。血中ウイルス量値が高いと、エイズ発症(重症化)やウイルス伝播(流行)を導きやすい。本プロジェクトでは、「血中ウイルス量を低値に留めるためには、体内の多様な株のうちで、高い増殖能株を優先的に排除すべきである」と考え、感染者体内の構成ウイルス株の「増殖能診断」を目指した。本研究期間に、増殖能の異なる多様な株の存在を確認し、高い増殖能株に対する既存治療薬の抗ウイルス効果の評価、増殖能関連遺伝子同定のための純系ウイルスの作成など、「増殖能診断」に向けた基盤整備の初段階を終えた。

Report

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

    (8 results)

All 2019 Other

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

  • [Int'l Joint Research] 国立サンラサロ病院(フィリピン)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] 国立サンラサロ病院(フィリピン)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] セベラスマレット大学医学部(インドネシア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] 国立サンラサロ病院/フィリピン保健省(フィリピン)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Intrinsic Replication Competences of HIV Strains After Zidovudine/Lamivudine/ Nevirapine Treatment in the Philippines2019

    • Author(s)
      Kageyama S, Hinay AA, Telan EFO, Samonte GMJ, Leano PSA, Tsuneki-Tokunaga A, and Kanai K.
    • Journal Title

      Journal of the International Association of Providers of AIDS Care

      Volume: 18 Pages: 1-8

    • DOI

      10.1177/2325958219856579

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Remarks] 鳥取大学医学部ウイルス学分野

    • URL

      https://www.med.tottori-u.ac.jp/introduction/medicine/about/3318/3326/23769.html

    • Related Report
      2020 Research-status Report 2019 Research-status Report
  • [Remarks] Div. Virol, Faculty of Medicine, Tottori Univ.

    • URL

      https://www.med.tottori-u.ac.jp/en/introduction/research/virology.html

    • Related Report
      2020 Research-status Report
  • [Remarks] Div of Virol, Faculty of Med, Tottori University

    • URL

      https://www.med.tottori-u.ac.jp/en/introduction/research/virology.html

    • Related Report
      2019 Research-status Report

URL: 

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

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