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2015 Fiscal Year Research-status Report

自己抗原の枯渇を標的とした水疱性類天疱瘡の新規治療法開発

Research Project

Project/Area Number 15K19668
Research InstitutionHokkaido University

Principal Investigator

夏賀 健  北海道大学, 大学病院, 助教 (70645457)

Project Period (FY) 2015-04-01 – 2017-03-31
Keywords細胞外マトリクス
Outline of Annual Research Achievements

水疱性類天疱瘡(bullous pemphigoid; BP)は、高齢者に好発して全身に水疱やびらんを呈する自己免疫性表皮下水疱症である。BP患者の血中自己抗体は、表皮基底膜タンパクである17型コラーゲン(COL17)を認識する。培養表皮細胞にBP患者血清あるいは、COL17内のNC16A領域に位置するエピトープに対する抗COL17抗体を投与すると、COL17の量が減少することが知られている(Iwata H et al., J Invest Dermatol 2009; Natsuga K et al., J Immunol 2012)。BP患者自己抗体投与によるCOL17の減少のメカニズムを明らかにするために、網羅的に培養細胞の遺伝子発現を解析することを計画した。本年度は、BP患者由来IgGと正常人由来IgGをそれぞれ培養表皮細胞に投与し、培養細胞中の転写産物をマイクロアレイを用いて解析した。マイクロアレイによる解析の結果、複数のケモカインやプロテアーゼ、細胞内輸送タンパクの遺伝子発現が、BP患者由来IgG投与群で上昇していることがわかった。このうち数十種類の遺伝子について、定量PCR法でマイクロアレイのデータが再現されるか、解析を行っている。また、類縁疾患である天疱瘡では、自己抗体の培養表皮細胞への投与によってp38-MAPK径路の活性化が引き起こされることが知られており、BP患者自己抗体でもこの現象がみられるか解析した。結果として、BP患者自己抗体の培養表皮細胞への投与は、p38-MAPK径路の活性化に寄与しなかった。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

既にBP患者自己抗体を培養表皮細胞へ投与した後に、培養細胞内で起きる遺伝子発現の変化をマイクロアレイでスクリーニング済みであり、結果も解析したうえでvalidationのための定量PCRを施行していることから、当初の計画通りに進展していると考える。このほか、p38-MAPK径路の関与によるCOL17の枯渇は否定できた点も評価できる。

Strategy for Future Research Activity

マイクロアレイで得られた結果について、定量PCRによるvaildationを継続する。得られた候補遺伝子について、RNAiや化合物を用いて機能を抑制することで、BP患者自己抗体を培養表皮細胞へ投与した際に、COL17の枯渇を抑えることができるかを検証する。培養表皮細胞の実験系で、COL17の枯渇を抑えることのできる化合物やRNAiが発見できれば、COL17ヒト化マウス(Nishie et al., Nat Med 2007)へBP患者自己抗体とともに投与して、水疱形成が抑制されるかを評価する。

  • Research Products

    (24 results)

All 2016 2015

All Journal Article (23 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 23 results,  Open Access: 4 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Extensive erythema and hyperkeratosis on the extremities and lumbar area as an unusual manifestation of Nagashima-type palmoplantar keratosis2016

    • Author(s)
      Miyauchi T, Nomura T, Suzuki S, Ohguchi Y, Yamaguchi Y, Shinkuma S, Natsuga K, Fujita Y, Shimizu H
    • Journal Title

      Acta Derm Venereol

      Volume: 96 Pages: 856-858

    • DOI

      10.2340/00015555-2391

    • Peer Reviewed / Open Access
  • [Journal Article] Epitope-dependent pathogenicity of antibodies targeting a major bullous pemphigoid autoantigen collagen XVII/BP1802016

    • Author(s)
      Wada M, Nishie W, Ujiie H, Izumi K, Iwata H, Natsuga K, Nakamura H, Kitagawa Y, Shimizu H
    • Journal Title

      J Invest Dermatol

      Volume: 136 Pages: 938-946

    • DOI

      10.1016/j.jid.2015.11.030

    • Peer Reviewed
  • [Journal Article] Extracellular cleavage of collagen XVII is essential for correct cutaneous basement membrane formation2016

    • Author(s)
      Nishimura M, Nishie W, Shirafuji Y, Shinkuma S, Natsuga K, Nakamura H, Sawamura D, Iwatsuki K, Shimizu H
    • Journal Title

      Hum Mol Genet

      Volume: 15 Pages: 328-329

    • DOI

      10.1093/hmg/ddv478

    • Peer Reviewed
  • [Journal Article] Nodular morphea: report of the first case associated with linear morphea2016

    • Author(s)
      Nakazato S, Nomura T, Yamane S, Shinkuma S, Natsuga K, Fujita Y, Arita K, Shimizu H
    • Journal Title

      Eur J Dermatol

      Volume: 26 Pages: 95-96

    • DOI

      10.1684/ejd.2015.2656

    • Peer Reviewed
  • [Journal Article] Increased bacterial load and expression of antimicrobial peptides in skin of barrier-deficient mice with reduced cancer susceptibility2016

    • Author(s)
      Natsuga K, Cipolat S, Watt FM
    • Journal Title

      J Invest Dermatol

      Volume: 136 Pages: 99-106

    • DOI

      10.1038/JID.2015.383

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Generalized acute subcutaneous edema as a rare cutaneous manifestation of severe dermatomyositis2016

    • Author(s)
      Watanabe M, Natsuga K, Arita K, Abe R, Shimizu H
    • Journal Title

      J Eur Acad Dermatol Venereol

      Volume: 30 Pages: e151-e152

    • DOI

      10.1111/jdv.13460

    • Peer Reviewed
  • [Journal Article] Epidermolysis bullosa acquisita develops in dominant dystrophic epidermolysis bullosa2016

    • Author(s)
      Hayashi R, Natsuga K, Watanabe M, Iwata H, Shinkuma S, Ito A, Masui Y, Ito M, Shimomura Y
    • Journal Title

      J Invest Dermatol

      Volume: 136 Pages: 320-323

    • DOI

      10.1038/JID.2015.370

    • Peer Reviewed / Open Access
  • [Journal Article] Mucocutaneous pyoderma gangraenosum due to trisomy 8 neutrophilic infiltrates in a patient with myelodysplastic syndrome2016

    • Author(s)
      Haga N, Iwata H, Yamaguchi Y, Shirato T, Nishimura K, Yamane N, Shinkuma S, Natsuga K, Kondo T, Shimizu H
    • Journal Title

      Br J Dermatol

      Volume: 174 Pages: 239-241

    • DOI

      10.1111/bjd.14102

    • Peer Reviewed
  • [Journal Article] Concomitant neoplasms in skin and stomach unveil the role of type IV collagen and E-cadherin in MUC5AC expression in vivo2016

    • Author(s)
      Hata H, Natsuga K, Kitamura S, Imafuku K, Yamaguchi Y, Ebihara Y, Shichinohe T, Hirano S, Shimizu H
    • Journal Title

      Br J Dermatol

      Volume: 174 Pages: 395-397

    • DOI

      10.1111/bjd.14084

    • Peer Reviewed
  • [Journal Article] Anti-laminin-gamma 1 pemphigoid with generalized pustular psoriasis and psoriasis vulgaris2016

    • Author(s)
      Fujimura Y, Natsuga K*, Hamade Y, Nomura Y, Kaku Y, Muramatsu R, Shimizu H
    • Journal Title

      Acta Dermato-Venereol

      Volume: 96 Pages: 120-121

    • DOI

      10.2340/00015555-2168

    • Peer Reviewed / Open Access
  • [Journal Article] mTOR expression correlates with invasiveness and progression of extramammary Paget's disease2016

    • Author(s)
      Hata H, Kitamura S, Inamura Y, Imafuku K, Homma E, Muramatsu K, Natsuga K, Abe R, Shimizu H
    • Journal Title

      J Eur Acad Dermatol Venereol

      Volume: 30 Pages: 1238-1239

    • DOI

      10.1111/jdv.13168

    • Peer Reviewed
  • [Journal Article] Mucosal hyperpigmentation from prophylactic minocycline for EGFR inhibitor2016

    • Author(s)
      Imafuku K, Natsuga K*, Aoyagi S, Shimizu H
    • Journal Title

      J Eur Acad Dermatol Venereol

      Volume: 30 Pages: 690-692

    • DOI

      10.1111/jdv.12978

    • Peer Reviewed
  • [Journal Article] Verrucous hyperplasia associated with neuropathy from schistorrhachis2016

    • Author(s)
      Imafuku K, Hata H, Inamura Y, Kitamura S, Natsuga K, Iwata H, Shimizu H
    • Journal Title

      J Eur Acad Dermatol Venereol

      Volume: 30 Pages: 876-878

    • DOI

      10.1111/jdv.13042

    • Peer Reviewed
  • [Journal Article] Metal implant-induced skin ulcer mimicking scrofuloderma2016

    • Author(s)
      Kitamura S, Natsuga K*, Imafuku K, Homma E, Yamane N, Aoyagi S, Matsumura T, Shimizu H
    • Journal Title

      J Eur Acad Dermatol Venereol

      Volume: 30 Pages: 449-450

    • DOI

      10.1111/jdv.12825

    • Peer Reviewed
  • [Journal Article] Anti-BP180-type mucous membrane pemphigoid: Report of two cases2016

    • Author(s)
      Wada M, Sato J, Shindoh M, Ujiie H, Natsuga K, Nishie W, Shimizu H, Kitagawa Y
    • Journal Title

      Odontology

      Volume: 104 Pages: 114-118

    • DOI

      10.1007/s10266-014-0181-2

    • Peer Reviewed
  • [Journal Article] Pyoderma gangrenosum associated with acute respiratory distress syndrom2016

    • Author(s)
      Watanabe M, Natsuga K, Ota M, Ito K
    • Journal Title

      Am J Med

      Volume: 129 Pages: e17-8

    • DOI

      10.1016/j.amjmed.2015.08.035

    • Peer Reviewed
  • [Journal Article] Non-solar-induced elastotic bands on the forearm2015

    • Author(s)
      Haga N, Abe R, Morita Y, Fujimura Y, Natsuga K, Nomura T, Kumakiri M, Shimizu H
    • Journal Title

      Eur J Dermatol

      Volume: 25 Pages: 508-9

    • DOI

      10.1684/ejd.2015.2629

    • Peer Reviewed
  • [Journal Article] Plasma cell cheilitis extending beyond vermillion border2015

    • Author(s)
      Fujimura Y, Natsuga K*, Abe R, Morita Y, Nomura T, Shimizu H
    • Journal Title

      J Dermatol

      Volume: 42 Pages: 935-6

    • DOI

      10.1111/1346-8138.12985

    • Peer Reviewed
  • [Journal Article] Context-dependent regulation of collagen XVII ectodomain shedding in skin2015

    • Author(s)
      Nishie W, Natsuga K, Iwata H, Izumi K, Ujiie H, Toyonaga E, Hata H, Nakamura H, Shimizu H
    • Journal Title

      Am J Pathol

      Volume: 185 Pages: 1361-71

    • DOI

      10.1016/j.ajpath.2015.01.012

    • Peer Reviewed
  • [Journal Article] In vivo analysis of IgE autoantibodies in bullous pemphigoid: a study of 100 cases2015

    • Author(s)
      Moriuchi R, Nishie W, Ujiie H, Natsuga K, Shimizu H
    • Journal Title

      J Dermatol Sci

      Volume: 78 Pages: 21-5

    • DOI

      10.1016/j.jdermsci.2015.01.013

    • Peer Reviewed
  • [Journal Article] Bowen’s disease on the palm presents refractory skin erosion without erythematous plaque2015

    • Author(s)
      Kitamura S, Iwata H, Imafuku K, Hata H, Natsuga K, Aoyagi S, Shimizu H
    • Journal Title

      J Dermatol

      Volume: 42 Pages: 225-6

    • DOI

      10.1111/1346-8138.12745

    • Peer Reviewed
  • [Journal Article] Skipped exon in COL7A1 determines the clinical phenotypes of dystrophic epidermolysis bullosa2015

    • Author(s)
      Toyonaga E, Nishie W, Onda H, Komine M, Murata S, Shinkuma S, Natsuga K, Nakamura H, Ohtsuki M, Shimizu H
    • Journal Title

      Br J Dermatol

      Volume: 172 Pages: 1149-4

    • DOI

      10.1111/bjd.13386

    • Peer Reviewed
  • [Journal Article] Plectin-related skin diseases2015

    • Author(s)
      Natsuga K
    • Journal Title

      J Dermatol Sci

      Volume: 77 Pages: 139-45

    • DOI

      10.1016/j.jdermsci.2014.11.005

    • Peer Reviewed
  • [Presentation] A single laminin subunit deficiency alters other laminin expression depending on the mutated genes2015

    • Author(s)
      Natsuga K, Nishie W, Shinkuma S, Nakamura H, Watanabe M, Kambe N, Hatamochi A, Kimura U, Suga Y, Shimizu H
    • Organizer
      40th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Place of Presentation
      Okayama, Japan
    • Year and Date
      2015-12-11 – 2015-12-12
    • Int'l Joint Research

URL: 

Published: 2017-01-06  

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