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2019 Fiscal Year Annual Research Report

Elucidation of a novel Ca2+ channel regulatory mechanism of mTOR that integrates sweating, pain and neuropsychiatric symptoms

Research Project

Project/Area Number 16K10155
Research InstitutionOsaka University

Principal Investigator

金田 眞理  大阪大学, 医学系研究科, 准教授 (70397644)

Project Period (FY) 2016-04-01 – 2020-03-31
Keywordsカルシウムチャネル / mTORC1 / 中枢神経症状 / てんかん / 発汗 / 白斑 / 温痛覚 / 皮膚症状
Outline of Annual Research Achievements

mTORC1が恒常的活性する結節性硬化症(TSC)ではてんかん、自閉症、認知障害、発汗、疼痛、白斑など様々な症状を生ずるが、その機序は不明であった。カルシウムイオン(Ca2+)は、細胞内情報伝達物質の1つで、神経伝達物質やホルモンの放出、細胞電位の調節、転写、細胞の分化や増殖、小胞の輸送、発汗、痛み調節など種々な作用を有している。この細胞内Ca2+濃度調節に関与するCa2+チャネルが、てんかん、自閉症、認知障害、などの精神神経症状や、発汗や痛みの病態に関与することが報告された。小胞体膜のCa2+チャネルは、IP3(イノシトール3リン酸)受容体で調節され、リガンドのIP3は、PI3K(PI3キナーゼ)により産生される。PI3Kは細胞膜でPIP3を産生し、mTORの活性化に関与する事。そこで、 TSCの神経症状と皮膚症状は、いずれもIP3受容体を介したCa2+チャネルという共通の機構の異常でおこると考え、発汗や痛みと精神神経症状を統合するmTORの新規Ca2+チャネル調節機構の解明を考えた。正常コントロールマウスと自閉症を呈するTSCのモデルマウス及び白斑と行動異常とてんかんを呈するTSCのモデルマウスを用いて疼痛刺激、アセチルコリンによる発汗刺激時のマウスの脳の活性状態をマウスのMRIを用いて比較検討し、これらの反応がmTORC1の阻害剤のシロリムス投与で軽快するかを検討した。さらに、Si-TSC1,TSC2ノックダウン神経細胞やアストロサイト、線維芽細胞、色素細胞を用いて細胞レベルでの刺激時及びシロリムス投与時のCa2+の流入の比較検討を行った。その結果TSC モデルマウス、TSCモデル神経細胞では正常に比して活性化(Ca2+の流入)がおこっているのみならず、ミトコンドリアの酸化ストレも亢進しており、それらの異常がシロリムス投与により改善されることが確認できた。

  • Research Products

    (21 results)

All 2020 2019

All Journal Article (14 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 14 results) Presentation (7 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results)

  • [Journal Article] Epilepsy in a melanocyte-lineage mTOR hyperactivation mouse model: A novel epilepsy model2020

    • Author(s)
      Yang Fei、Yang Lingli、Wataya-Kaneda Mari、Teng Lanting、Katayama Ichiro
    • Journal Title

      PLOS ONE

      Volume: 15 Pages: e0228204

    • DOI

      10.1371/journal.pone.0228204

    • Peer Reviewed
  • [Journal Article] Genotype and phenotype analysis of patients with pediatric cutaneous mastocytosis, especially wild‐type KIT patients2020

    • Author(s)
      Arase Noriko、Wataya‐Kaneda Mari、Murota Hiroyuki、Nakagawa Yukinobu、Yamaoka Toshifumi、Itoi‐Ochi Saori、Hirayasu Kouyuki、Arase Hisashi、Fujimoto Manabu、Katayama Ichiro
    • Journal Title

      The Journal of Dermatology

      Volume: 47 Pages: 426~429

    • DOI

      10.1111/1346-8138.15266

    • Peer Reviewed
  • [Journal Article] Primary cutaneous anaplastic large cell lymphoma with rapid liver infiltration after spontaneous resolution of the primary lesion2020

    • Author(s)
      Kume Miki、Kiyohara Eiji、Aoyama Reika、Hayashi Misa、Morikawa Yoichiro、Maeda Tetsuo、Tanemura Atsushi、Wataya‐Kaneda Mari、Katayama Ichiro、Fujimoto Manabu
    • Journal Title

      The Journal of Dermatology

      Volume: 47 Pages: 190-191

    • DOI

      10.1111/1346-8138.15299

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Case of X‐linked hypohidrotic ectodermal dysplasia, along with facial bilateral reticular pigmentation2020

    • Author(s)
      Kamitani Tomo、Arase Noriko、Nomura Toshifumi、Peh Jin Teng、Katayama Ichiro、Wataya‐Kaneda Mari、Fujimoto Manabu
    • Journal Title

      Journal of Cutaneous Immunology and Allergy

      Volume: 3 Pages: 41~42

    • DOI

      10.1002/cia2.12097

    • Peer Reviewed
  • [Journal Article] Safety and Efficacy of the Sirolimus Gel for TSC Patients With Facial Skin Lesions in a Long-Term, Open-Label, Extension, Uncontrolled Clinical Trial2020

    • Author(s)
      Wataya-Kaneda Mari、Nagai Hiroshi、Ohno Yuuki、Yokozeki Hiroo、Fujita Yasuyuki、Niizeki Hironori、Yoshida Kazue、Ogai Masaaki、Yoshida Yuichi、Asahina Akihiko、Fukai Kazuyoshi、Tateishi Chiharu、Hamada Izumi、Takahata Tatsuro、Shimizu Kenji、Shimasaki Shigeki、Murota Hiroyuki
    • Journal Title

      Dermatology and Therapy

      Volume: Online Pages: Online

    • DOI

      10.1007/s13555-020-00387-7

    • Peer Reviewed
  • [Journal Article] A case of zonisamide-induced toxic epidermal necrolysis with acute respiratory failure2020

    • Author(s)
      Kume Miki、Nakagawa Yukinobu、Kiyohara Eiji、Arase Noriko、Wataya-Kaneda Mari、Yaga Moto、Yanagawa Masahiro、Fujimoto Manabu
    • Journal Title

      Allergology International

      Volume: 20 Pages: 30057-5

    • DOI

      10.1016/j.alit.2020.04.007

    • Peer Reviewed
  • [Journal Article] A Case of Malignant Melanoma with Shrinking Metastases after Sequential Severe irAEs2020

    • Author(s)
      Maekawa, Aya; Tanemura, Atsushi; Akome, Jun; Tonomura, Kyoko; Kiyohara, Eiji; Wataya-Kaneda, Mari; Namikawa, Kenjiro; Yamazaki, Naoya; Fujimoto, Manabu
    • Journal Title

      Journal of Cutaneous Immunology and Allergy

      Volume: 3 Pages: 50-51

    • Peer Reviewed
  • [Journal Article] Impact of a 4‐bp deletion variant (rs984225803) in the promoter region of SLC45A2 on color variation among a Japanese population2019

    • Author(s)
      Okamura Ken、Abe Yuko、Hayashi Masahiro、Saito Toru、Nagatani Kei、Tanoue Toshihide、Wataya‐Kaneda Mari、Hozumi Yutaka、Suzuki Tamio
    • Journal Title

      The Journal of Dermatology

      Volume: 46 Pages: 295-296

    • DOI

      10.1111/1346-8138.14831

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Efficiency of sirolimus delivery to the skin is dependent on administration route and formulation2019

    • Author(s)
      Kitayama Kazuko、Maeda Shinichiro、Nakamura Ayumi、Katayama Ichiro、Wataya-Kaneda Mari
    • Journal Title

      Journal of Dermatological Science

      Volume: 94 Pages: 350~353

    • DOI

      10.1016/j.jdermsci.2019.05.002

    • Peer Reviewed
  • [Journal Article] A Rare Case of Small Bowel Intussusception Due to Metastatic Malignant Melanoma2019

    • Author(s)
      Hanaoka Yuma、Tanemura Atsushi、Tanaka Mari、Takafuji Madoka、Kiyohara Eiji、Wataya-Kaneda Mari、Fujimoto Manabu、Haraguchi Naotsugu
    • Journal Title

      Journal of Cosmetics, Dermatological Sciences and Applications

      Volume: 09 Pages: 107~112

    • DOI

      10.4236/jcdsa.2019.92009

    • Peer Reviewed
  • [Journal Article] Fixed drug eruption caused by allylisopropylacetylurea mimicking contact dermatitis of the face2019

    • Author(s)
      Deno Rikako、Nakagawa Yukinobu、Itoi‐Ochi Saori、Kotobuki Yorihisa、Kiyohara Eiji、Wataya‐Kaneda Mari、Fujimoto Manabu
    • Journal Title

      Contact Dermatitis

      Volume: 82 Pages: 56~57

    • DOI

      10.1111/cod.13382

    • Peer Reviewed
  • [Journal Article] Case of epidermolytic ichthyosis with impairment of pulmonary function and exacerbated skin manifestations in a late middle‐aged adult2019

    • Author(s)
      Maekawa Aya、Arase Noriko、Tamai Katsuto、Nomura Toshifumi、Kiyohara Eiji、Wataya‐Kaneda Mari、Arase Hisashi、Katayama Ichiro、Fujimoto Manabu
    • Journal Title

      The Journal of Dermatology

      Volume: 46 Pages: 480-482

    • DOI

      10.1111/1346-8138.15077

    • Peer Reviewed
  • [Journal Article] Expression of polydom in dermal neurofibroma and surrounding dermis in von Recklinghausen’s disease2019

    • Author(s)
      Kamitani Tomo、Murota Hiroyuki、Arase Noriko、Wataya-Kaneda Mari、Sato-Nishiuchi Ryoko、Sekiguchi Kiyotoshi、Okuzaki Daisuke、Motooka Daisuke、Katayama Ichiro
    • Journal Title

      Journal of Dermatological Science

      Volume: 96 Pages: 73~80

    • DOI

      10.1016/j.jdermsci.2019.09.005

    • Peer Reviewed
  • [Journal Article] Rare case of malignant melanoma presenting expanded volar pigmentation after surgery2019

    • Author(s)
      Atsushi Tanemura, Madoka Takafuji, Yuma Hanaoka, Eiji Kiyohara, Mari Wataya-Kaneda, Manabu Fujimoto
    • Journal Title

      J Dermatol.J 46

      Volume: 49 Pages: 409-410

    • DOI

      10.1111/1346-8138.15013. Epub 2019 Jul 11.

    • Peer Reviewed
  • [Presentation] Sirolimus gel effectively reduced neurofibromas in neurofibromatosis type 1 in a double-blind, placebo-controlled, randomized clinical trial.2019

    • Author(s)
      Mari Wataya-Kaneda1, Ayumi Nakamura, Yoshiyuki Watanabe, Ichiro Katayama
    • Organizer
      77th Annual meeting of Society for Investigative Dermatology. USA Chicago, 2019 May 8-11.
    • Int'l Joint Research
  • [Presentation] Sirolimus delivery to dermis and blood via oral and topical sirolimus formulation in hairless micel.2019

    • Author(s)
      K kitayama, S Maeda A Nakamura, I Katayama, Mari Wataya-Kaneda1*,
    • Organizer
      77th Annual meeting of Society for Investigative Dermatology. USA Chicago, 2019 May 8-11.
    • Int'l Joint Research
  • [Presentation] Characteristic Clinical symptoms and histological analysis of clinically diagnosed type 2 TSC nosaicism2019

    • Author(s)
      Mari Wataya-Kaneda, Tomo Kamitani, Saori Ishino,Keisuke Nimura, Manabu Fujimoto
    • Organizer
      2019 International Tuberous Sclerosis Complex Research Conference
    • Int'l Joint Research
  • [Presentation] Safety and effucacy of sirolimus gel therapy for patients with TSC involving facial skin lesions in a long -term clinical trial2019

    • Author(s)
      Wataya-Kaneda M*, Nagai H, Ohno Y, Yokozeki H, fujita Y, Yoshida K, Ogai M, Yoshida Y,Asahina A, Tateishi C
    • Organizer
      49 th Annual ESDR meeting
    • Int'l Joint Research
  • [Presentation] Characteristic distribution of the skin lesions in Tuberous Sclerosis2019

    • Author(s)
      A Takahashi, I Katayama, M Fujimoto, M Wataya-Kaneda*.
    • Organizer
      49 th Annual ESDR meeting
    • Int'l Joint Research
  • [Presentation] Morphlogical and functional analysis oin M3Rmedical sweating in TSC1 k/o mouse2019

    • Author(s)
      Yang F, Wataya-Kaneda M*, Yang L, H Murota, Katayama I.
    • Organizer
      49 th Annual ESDR meeting
    • Int'l Joint Research
  • [Presentation] Current status of treatment of tuberous sclerosis complex in Japan 日本における結節性硬化症の治療の現状ー皮膚病変を中心にー2019

    • Author(s)
      Mari Wataya-Kaneda,
    • Organizer
      第七届TSC 相関癲癇及癲癇性腦病外科治療検討会
    • Invited

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Published: 2021-01-27  

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