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Development of a new treatment for HAM/TSP targeting HTLV-1-infected cells

Research Project

Project/Area Number 19K07999
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52020:Neurology-related
Research InstitutionKagoshima University

Principal Investigator

Kubota Ryuji  鹿児島大学, 総合科学域総合研究学系, 教授 (70336337)

Co-Investigator(Kenkyū-buntansha) 田中 正和  鹿児島大学, 総合科学域総合研究学系, 准教授 (20454613)
松浦 英治  鹿児島大学, 医歯学域医学系, 准教授 (30598800)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsHTLV-1 / HAM / infected cell / HTLV-1 HAM / 感染細胞 / 治療法開発
Outline of Research at the Start

ヒトT細胞白血病ウイルス1型(HTLV-1)感染者の一部に脊髄炎症性疾患HAMや白血病ATLが発症するが、未だ有効な治療法は確立されていない。本研究では、
①HAM患者末梢血より感染細胞リッチ成分を集め、コントロールには非感染者の末梢血リンパ球を用いてマイクロアレイ解析を行う。
②正常細胞にはほとんど発現しない生体分子のうちHTLV-1感染細胞に高度に発現している分子を感染細胞特異的分子として同定する。
③これらの分子の内、感染細胞の生存・維持に重要な分子を標的候補として選別する、これらの分子の阻害化合物を用いて、HAM患者の感染細胞を用いた実験で感染細胞を特異的に殺傷する化合物を同定する。

Outline of Final Research Achievements

Microarray analysis of CADM1+CD4+HTLV-1 infected cells in peripheral blood lymphocytes (PBMCs) from HTLV-1-associated myelopathy (HAM) patients was performed and identified the differentially expressed genes. We focused on an enzymatic molecule among them, which involved in cellular signaling of CREB. Three inhibitor substances for this enzymatic molecule were added to PBMCs from HAM patients and normal control subjects. We performed a flow cytometric analysis focusing on CADM1+HTLV-1-infected cells and found that, in PBMCs from nine HAM patients, one of the inhibitors showed a significant reduction in infected cells with 20% and 40% in average at 1uM and 5uM, respectively.

Academic Significance and Societal Importance of the Research Achievements

HAMではHTLV-1感染細胞が多いことが特徴で、発症及び進行に関与しており、感染細胞を排除することが治療のために重要と考えられている。しかしながら適切な治療法は見つかっていない。本研究ではHTLV-1感染細胞に特異的に発現し、その細胞の生存に重要と思われる分子に注目し、阻害剤の探索を行った。その結果1種類の化合物が試験管内でHAMの感染細胞を特異的に減少させることを見出した。今後さらに確認作業等が必要である。

Report

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

    (28 results)

All 2021 2020 2019

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (19 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Anti-human T-cell leukemia virus type 1 (HTLV-1) antibody assays in cerebrospinal fluid for the diagnosis of HTLV-1-associated myelopathy/tropical spastic paraparesis2021

    • Author(s)
      Kodama Daisuke, Tanaka Masakazu, Matsuzaki Toshio, Nozuma Satoshi, Matsuura Eiji, Takashima Hiroshi, Izumo Shuji, Kubota Ryuji
    • Journal Title

      Journal of Clinical Microbiology

      Volume: - Issue: 5

    • DOI

      10.1128/jcm.03230-20

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of TSLC1 in patients with HAM/TSP2020

    • Author(s)
      Takenouchi N, Tanaka M, Sato T, Yao J, Fujisawa JI, Izumo S, Kubota R, Matsuura E.
    • Journal Title

      J Neurovirol

      Volume: 26 Issue: 3 Pages: 404-414

    • DOI

      10.1007/s13365-020-00838-z

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Inhibition of ABL1 tyrosine kinase reduces HTLV-1 proviral loads in peripheral blood mononuclear cells from patients with HTLV-1-associated myelopathy/tropical spastic paraparesis2020

    • Author(s)
      Kodama Daisuke, Tanaka Masakazu, Matsuzaki Toshio, Izumo Kimiko, Nakano Nobuaki, Matsuura Eiji, Saito Mineki, Nagai Masahiro, Horiuchi Masahisa, Utsunomiya Atae, Takashima Hiroshi, Kubota Ryuji, Izumo Shuji
    • Journal Title

      PLOS Neglected Tropical Diseases

      Volume: 14 Issue: 7 Pages: e0008361-e0008361

    • DOI

      10.1371/journal.pntd.0008361

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Establishment of a novel diagnostic test algorithm for human T-cell leukemia virus type 1 infection with line immunoassay replacement of western blotting: a collaborative study for performance evaluation of diagnostic assays in Japan,2020

    • Author(s)
      Okuma K, Kuramitsu M, Niwa T, et al.(40人中17番目)
    • Journal Title

      Retrovirology

      Volume: 17 Issue: 1 Pages: 26-26

    • DOI

      10.1186/s12977-020-00534-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Human T-lymphotropic virus type 1 (HTLV-1) and cellular immune response in HTLV-1-associated myelopathy/tropical spastic paraparesis2020

    • Author(s)
      Nozuma S, Kubota R, Jacobson S
    • Journal Title

      J Neurovirol

      Volume: 26 Issue: 5 Pages: 652-663

    • DOI

      10.1007/s13365-020-00881-w

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Induction of APOBEC3B cytidine deaminase in HTLV‐1‐infected humanized mice2019

    • Author(s)
      Yao J, Tanaka M, Takenouchi N, Ren Y, Lee S-I, Fujisawa J-I
    • Journal Title

      Experimental and Therapeutic Medicine

      Volume: 17 Pages: 3701-3708

    • DOI

      10.3892/etm.2019.7375

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Conflicting effects of poly(ADP-ribose)polymerase inhibitor on cell-mediated and virion-mediated HTLV-1 infection.2019

    • Author(s)
      M. Tanaka, K. Tanaka, C. Ida, A. Oue, S. Yamashita, J. Yao, N. Takenouchi, M. Miwa.
    • Journal Title

      Virus Res.

      Volume: 270 Pages: 197653-197653

    • DOI

      10.1016/j.virusres.2019.197653

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of radiation based on whole-body irradiation in HTLV-1-infected mice.2019

    • Author(s)
      M. Tanaka, Y. Kawazu, T. Yoshida, T. Konishi, N. Takenouchi, M. Miwa.
    • Journal Title

      J Radiat Res.

      Volume: 60 Issue: 5 Pages: 710-713

    • DOI

      10.1093/jrr/rrz050

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Integrated mRNA and microRNA analysis of HTLV-1-infected cells from HAM patients.2021

    • Author(s)
      久保田龍二、野妻智嗣、田中正和、松浦英治、高嶋博
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Immunopathogenic CSF TCR repertoire signatures in virus-induced neurologic disease.2021

    • Author(s)
      野妻智嗣、松浦英治、田中正和、久保田龍二、Steven Jacobson、高嶋博
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] HTLV-1感染細胞を標的としたTCRレパトア解析によるHAMの病勢指標となるバイオマーカーの探索2021

    • Author(s)
      野妻智嗣、松浦英治、田中正和、松崎敏男、久保田龍二、高嶋博
    • Organizer
      第7回日本HTLV-1学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] HAM患者HTLV-1感染CD4+T細胞におけるTCRシグナルの低下2021

    • Author(s)
      久保田龍二、田中正和、児玉大介、野妻智嗣、松浦英治、田中勇悦、高嶋博
    • Organizer
      第7回日本HTLV-1学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 髄液中抗HTLV-1抗体検査とHAM診断2021

    • Author(s)
      児玉大介、田中正和、松崎敏男、野妻智嗣、松浦英治、高嶋博、出雲周二、久保田龍二
    • Organizer
      第7回日本HTLV-1学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] HAM疾患活動性バイオマーカーとしてのCADM1の検討2021

    • Author(s)
      竹之内徳博、田中正和、松浦英治、久保田龍二、中嶋伸介、大高時文、上野孝治、大隈和
    • Organizer
      第7回日本HTLV-1学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Retrieval of therapeutic target molecules for HAM by microarray analysis of HTLV-1-infected cells.2020

    • Author(s)
      久保田龍二、田中正和、松浦英治、高嶋 博
    • Organizer
      第61回日本神経学会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] High reactivity to anti-HERV-K10 in HTLV-1-infected individuals.2020

    • Author(s)
      児玉大介、田中正和、松崎敏男、野妻智嗣、松浦英治、高嶋 博、出雲周二、久保田龍二
    • Organizer
      第61回日本神経学会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Immunopathogenic CSF TCR repertoire signatures in virus-associated neurologic disease.2020

    • Author(s)
      野妻智嗣、松浦英治、田中正和、松崎敏男、久保田龍二、Steven Jacobson、高嶋 博
    • Organizer
      第61回日本神経学会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] N-acetyllactosamine impacts on the infectivity of HTLV-1.2020

    • Author(s)
      児玉大介、田中正和、出雲公子、松﨑敏男、松浦英治、高嶋博、出雲周二、久保田龍二
    • Organizer
      第32回日本神経免疫学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Microarray analysis reveals down-regulation of Toll-like receptor genes in activated HTLV-1-infected cells from HAM/TSP patients.2019

    • Author(s)
      R. Kubota, M. Tanaka, D. Kodama, E. Matsuura, H. Takashima.
    • Organizer
      19th International Conference on Human Retrovirology: HTLV & Related Viruses,Lima, Peru.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Inhibition of ABL1 induces decrease of proviral load HTLV-1 infected CD4+ T cell of HAM/TSP.2019

    • Author(s)
      D. Kodama, M. Tanaka, T. Matsuzaki, H. Takashima, S. Izumo, R. Kubota.
    • Organizer
      19th International Conference on Human Retrovirology: HTLV & Related Viruses,Lima, Peru.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of neuraminidase inhibitors on HTLV-1 infection and lymphocyte chemotaxis in HAM/TSP.2019

    • Author(s)
      M. Tanaka, D. Kodama, E. Matsuura, H. Takashima, S. Izumo, R. Kubota.
    • Organizer
      19th International Conference on Human Retrovirology: HTLV & Related Viruses,Lima, Peru.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Open label clinical trial of oral high dose L-arginine for the patients with HAM/TSP.2019

    • Author(s)
      E. Matsuura, Y. Tashiro, K. Kodama, Y. Hiramatsu, M. Ando, S. Nozuma, Y. Higuchi, Y. Sakiyama, T. Nakamura, M. Yoshimura, H. Arata,
    • Organizer
      19th International Conference on Human Retrovirology: HTLV & Related Viruses,Lima, Peru.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Microarray analysis reveals down-regulation of Toll-like receptor genes in activated HTLV-1-infected cells from patients with HTLV-1-associated neurological disease.2019

    • Author(s)
      R. Kubota, M. Tanaka, D. Kodama, E. Matsuura, H. Takashima.
    • Organizer
      52th Annual Meeting of the Society for Leukocyte Biology. Boston.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Suppression of HTLV-1 infection by lactoferrin.2019

    • Author(s)
      M. Tanaka, N. Takenouchi, H. Tsuda, M. Miwa.
    • Organizer
      52th Annual Meeting of the Society for Leukocyte Biology. Boston.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] HAM患者HTLV-1感染細胞のマイクロアレイ解析による治療標的分子の探索2019

    • Author(s)
      久保田龍二、田中正和、春口志門、児玉大介、松浦英治、高嶋 博
    • Organizer
      第6回日本HTLV-1学会,宮崎
    • Related Report
      2019 Research-status Report
  • [Presentation] 鹿児島県霧島市でのキャリアママの会カランコエかごしまによるHTLV 1 キャリア相談事業2019

    • Author(s)
      松﨑敏男、池上真弓、久保田龍二
    • Organizer
      第6回日本HTLV-1学会,宮崎
    • Related Report
      2019 Research-status Report
  • [Presentation] HAM: the inflammatory neurological disease caused by HTLV-12019

    • Author(s)
      R. Kubota
    • Organizer
      4th Precision Medicine Conference in Fujian, China.
    • Related Report
      2019 Research-status Report
    • Invited
  • [Book] HTLV-1関連脊髄症(HAM)診療ガイドライン20192019

    • Author(s)
      久保田龍二
    • Total Pages
      211
    • Publisher
      南江堂
    • ISBN
      9784524226344
    • Related Report
      2019 Research-status Report

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

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