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2017 Fiscal Year Annual Research Report

Elucidation of epigenetic gene regulation mechanism for establishment of new therapeutic strategies for severe infectious diseases

Research Project

Project/Area Number 15K09580
Research InstitutionKeio University

Principal Investigator

石井 誠  慶應義塾大学, 医学部(信濃町), 講師 (30317333)

Project Period (FY) 2015-04-01 – 2018-03-31
Keywordsインフルエンザ / 肺炎球菌性肺炎 / エピジェネティクス / ヒストンメチル化 / Ezh2
Outline of Annual Research Achievements

H27-H28年度は、重症インフルエンザ感染後肺炎球菌感染マウスモデルを用いて、ヒストンアセチル化を介したエピジェネティック制御機構を解明すべく、ヒストン脱アセチル化酵素阻害薬であるTSAが保護的役割を有する事を示した。
H29年度は、もう一つの課題である、インフルエンザ感染後肺炎球菌感染における、ヒストンメチル化、とくにヒストンH3K27メチル化酵素Ezh2の役割に関して以下の検討を行った。ヒストンH3やH4のメチル化は、その修飾部位により転写活性への影響が異なり、ヒストンH3K27のメチル化は転写活性抑制性の修飾である。そしてEzh2はH3K27の特異的メチル基転移酵素であり、転写活性抑制性に働く。
本研究では、薬剤(タモキシフェン)誘導性にEzh2が全身の細胞でノックアウトされるEzh2 flox/flox ERT2-Creコンディショナルノックアウト(cKO)マウスとコントロールマウス(Ezh2 flox/floxマウス)を用いて、非致死量のインフルエンザウイルス(A/H1N1, PR8株) 5 pfuを点鼻感染後、7日目に臨床分離株である肺炎球菌(血清型3)1x10の4乗 cfuを点鼻投与することで、インフルエンザ感染後2次性肺炎球菌感染を惹起した。
その結果、Ezh2 cKOマウスでは、コントロ-ルマウスに比べ生存率が有意に低下した。また肺炎球菌感染24時間後の気管支肺胞洗浄(BAL)液中の総細胞数及びマクロファージ数がcKO 群で有意に上昇し、24時間後のBAL液中のIL-1βがEzh2 cKO群で有意に上昇した。
今後はさらに本モデルを用いてEzh2の保護的役割のメカニズムに関して検討していきたい。

  • Research Products

    (16 results)

All 2018 2017

All Journal Article (12 results) (of which Peer Reviewed: 1 results) Presentation (4 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Clinical characteristics of pulmonary Mycobacterium lentiflavum disease in adult patients2018

    • Author(s)
      Yagi Kazuma、Morimoto Kozo、Ishii Makoto、Namkoong Ho、Okamori Satoshi、Asakura Takanori、Suzuki Shoji、Asami Takahiro、Uwamino Yoshifumi、Funatsu Yohei、Fujiwara Hiroshi、Kamata Hirofumi、Nishimura Tomoyasu、Betsuyaku Tomoko、Kurashima Atsuyuki、Hasegawa Naoki
    • Journal Title

      International Journal of Infectious Diseases

      Volume: 67 Pages: 65~69

    • DOI

      10.1016/j.ijid.2017.12.001

  • [Journal Article] Natural history of Mycobacterium fortuitum pulmonary infection presenting with migratory infiltrates: a case report with microbiological analysis2018

    • Author(s)
      Okamori Satoshi、Asakura Takanori、Nishimura Tomoyasu、Tamizu Eiko、Ishii Makoto、Yoshida Mitsunori、Fukano Hanako、Hayashi Yuichiro、Fujita Masaki、Hoshino Yoshihiko、Betsuyaku Tomoko、Hasegawa Naoki
    • Journal Title

      BMC Infectious Diseases

      Volume: 18 Pages: 1

    • DOI

      10.1186/s12879-017-2892-9

  • [Journal Article] Impact of cavity and infiltration on pulmonary function and health-related quality of life in Mycobacterium avium complex pulmonary disease: A 3-dimensional computed tomographic analysis.2017

    • Author(s)
      Asakura T, Yamada Y, Namkoong H, Suzuki S, Niijima Y, Kamata H, Yagi K, Okamori S, Sugiura H, Ishii M, Jinzaki M, Betsuyaku T, Hasegawa N.
    • Journal Title

      Respir Med

      Volume: 12 Pages: 9-16

    • DOI

      10.1016/j.rmed.2017.03.010

    • Peer Reviewed
  • [Journal Article] Glycoprotein Nanotube Traps Influenza Virus.2017

    • Author(s)
      Yuge S, Akiyama M, Ishii M, Namkoong H, Yagi K, Nakai Y, Adachi R, Komatsu T.
    • Journal Title

      Chem Lett

      Volume: 41(1) Pages: 95-97

  • [Journal Article] Long-term Outcome of Pulmonary Resection for Nontuberculous Mycobacterial Pulmonary Disease2017

    • Author(s)
      Asakura Takanori、Hayakawa Nobutaka、Hasegawa Naoki、Namkoong Ho、Takeuchi Ken、Suzuki Shoji、Ishii Makoto、Betsuyaku Tomoko、Abe Yoshiaki、Ouchi Motofumi
    • Journal Title

      Clinical Infectious Diseases

      Volume: 65 Pages: 244~251

    • DOI

      10.1093/cid/cix274

  • [Journal Article] Effects of the common polymorphism in the human aldehyde dehydrogenase 2 (ALDH2) gene on the lung2017

    • Author(s)
      Kuroda Aoi、Hegab Ahmed E.、Jingtao Gao、Yamashita Shuji、Hizawa Nobuyuki、Sakamoto Tohru、Yamada Hideyasu、Suzuki Satoshi、Ishii Makoto、Namkoong Ho、Asakura Takanori、Ozaki Mari、Yasuda Hiroyuki、Hamamoto Junko、Kagawa Shizuko、Soejima Kenzo、Betsuyaku Tomoko
    • Journal Title

      Respiratory Research

      Volume: 18 Pages: 69

    • DOI

      10.1186/s12931-017-0554-5

  • [Journal Article] The efficacy, safety, and feasibility of inhaled amikacin for the treatment of difficult-to-treat non-tuberculous mycobacterial lung diseases2017

    • Author(s)
      Yagi Kazuma、Ishii Makoto、Namkoong Ho、Asami Takahiro、Iketani Osamu、Asakura Takanori、Suzuki Shoji、Sugiura Hiroaki、Yamada Yoshitake、Nishimura Tomoyasu、Fujiwara Hiroshi、Funatsu Yohei、Uwamino Yoshifumi、Kamo Tetsuro、Tasaka Sadatomo、Betsuyaku Tomoko、Hasegawa Naoki
    • Journal Title

      BMC Infectious Diseases

      Volume: 17 Pages: 558

    • DOI

      10.1186/s12879-017-2665-5

  • [Journal Article] Clinical and radiological characteristics of patients with late-onset severe restrictive lung defect after hematopoietic stem cell transplantation2017

    • Author(s)
      Namkoong Ho、Ishii Makoto、Mori Takehiko、Sugiura Hiroaki、Tasaka Sadatomo、Sakurai Masatoshi、Koda Yuya、Kato Jun、Hasegawa Naoki、Okamoto Shinichiro、Betsuyaku Tomoko
    • Journal Title

      BMC Pulmonary Medicine

      Volume: 17 Pages: 123

    • DOI

      10.1186/s12890-017-0466-7

  • [Journal Article] Impact of chronic Pseudomonas aeruginosa infection on health-related quality of life in Mycobacterium avium complex lung disease2017

    • Author(s)
      Kamata Hirofumi、Asakura Takanori、Suzuki Shoji、Namkoong Ho、Yagi Kazuma、Funatsu Yohei、Okamori Satoshi、Uno Shunsuke、Uwamino Yoshifumi、Fujiwara Hiroshi、Nishimura Tomoyasu、Ishii Makoto、Betsuyaku Tomoko、Hasegawa Naoki
    • Journal Title

      BMC Pulmonary Medicine

      Volume: 17 Pages: 198

    • DOI

      10.1186/s12890-017-0544-x

  • [Journal Article] Sternoclavicular joint osteomyelitis extending to lung abscess complicated by Staphylococcal infective endocarditis2017

    • Author(s)
      Masuzawa Keita、Asakura Takanori、Ishii Makoto、Yasuda Hiroyuki、Sugiura Hiroaki、Betsuyaku Tomoko
    • Journal Title

      IDCases

      Volume: 9 Pages: 36~37

    • DOI

      10.1016/j.idcr.2017.04.005

  • [Journal Article] Suspected accelerated disease progression after discontinuation of nintedanib in patients with idiopathic pulmonary fibrosis2017

    • Author(s)
      Okamori Satoshi、Asakura Takanori、Masuzawa Keita、Yasuda Hiroyuki、Kamata Hirofumi、Ishii Makoto、Betsuyaku Tomoko
    • Journal Title

      Medicine

      Volume: 96 Pages: e9081~e9081

    • DOI

      10.1097/MD.0000000000009081

  • [Journal Article] Bilateral upper lobe Pneumocystis pneumonia during aerosolized pentamidine prophylaxis2017

    • Author(s)
      Ohara Y、Asakura T、Ueda S、Yamada Y、Ishii M、Betsuyaku T
    • Journal Title

      QJM: An International Journal of Medicine

      Volume: 0 Pages: XX

    • DOI

      10.1093/qjmed/hcx233

  • [Presentation] The Critical Role of a Disintegrin and Metalloprotease (ADAM) 10 During Severe Influenza Virus Infection In Vivo and In Vitro.2017

    • Author(s)
      Okamori S, Ishii M, Asakura T, Suzuki S, Kamata H, Namkoong H, Yagi K, Kagawa S, Kamo T, Asami T, Horiuchi K, Hasegawa N, Betsuyaku T.
    • Organizer
      The 113th annual International Conference of American thoracic society.
    • Int'l Joint Research
  • [Presentation] S1P Receptor Modulation Expands CD11b+Gr-1+ Cells and Inhibits Lymphocyte Infiltration in the Lungs and Ameliorate Murine Pulmonary Emphysema.2017

    • Author(s)
      Asakura T, Ishii M, Namkoong H, Suzuki S, Kagawa S, Komiya T, Yagi K, Kamata H, Okamori S, Asami T, Hasegawa N, Betsuyaku T.
    • Organizer
      The 113th annual International Conference of American thoracic society.
    • Int'l Joint Research
  • [Presentation] A Case of Cutis Laxa with Juvenile Emphysema Arising from Frameshift Mutations in Exon 30 of the Elastin Gene (ELN).2017

    • Author(s)
      Namkoong H, Ishii M, Yagi K, Chubachi S, Tsuji S, Kosaki K, Betsuyaku T.
    • Organizer
      The 113th annual International Conference of American thoracic society.
    • Int'l Joint Research
  • [Presentation] Protective Role of a Disintegrin and Metalloprotease 17 (ADAM17) in Elastase-Induced Emphysema in Mice.2017

    • Author(s)
      Suzuki S, Ishii M, Asakura T, Namkoong H, Okamori S, Yagi K, Kamata H, Kagawa S, Horiuchi K, Hasegawa N, BetsuyakuT.
    • Organizer
      The 113th annual International Conference of American thoracic society.

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Published: 2018-12-17  

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