• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

New combinatorial approach to peritoneal dissemination of scirrhous gastric carcinoma based REIC/Dkk-3 gene therapy

Research Project

Project/Area Number 21591699
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Digestive surgery
Research InstitutionOkayama University

Principal Investigator

KATAOKA Ken  岡山大学, 大学院・医歯薬学総合研究科, 講師 (10293317)

Co-Investigator(Kenkyū-buntansha) SAKAGUCHI Masakiyo  岡山大学, 大学院・医歯薬学総合研究科, 准教授 (70379840)
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsREIC/Dkk-3 / Gene Therapy / Scirrhous Gastric Carcinoma / Peritoneal Dissemination / REIC / Dkk-3
Research Abstract

A single intraperitoneal injection of REIC/Dkk-3 adenovirus suppressed tumor dissemination and disease progression of scirrhous gastric carcinoma(SGC) in the mouse model. Immunomodulation by Ad-REIC led to recruitment of natural killer cells inside tumor nodules. We conclude that REIC/Dkk-3 gene therapy may be a potential tool in combinatorial approaches to achieve curative effects in SGC. We also demonstrated that PINK1, a key molecule for the mitochondrial protection system, was a new target molecule to sensitize resistant cancer cells to REIC/Dkk-3 gene therapy.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (55 results)

All 2012 2011 2010 2009 Other

All Journal Article (25 results) (of which Peer Reviewed: 22 results) Presentation (30 results)

  • [Journal Article] S100A7 Promotes the Migration and Invasion of Osteosarcoma Cells via Receptor for Advanced Glycation End Products2012

    • Author(s)
      Kataoka K, Ono T, Murata H, Morishita M, Yamamoto KI, Sakaguchi M, Huh NH
    • Journal Title

      Oncol Lett

      Volume: 3 Pages: 1149-1153

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Preclinical Safety and Efficacy of in Situ REIC/Dkk-3 Gene Therapy for Prostate Cancer2012

    • Author(s)
      Kawauchi K, Watanabe M, Kaku H, Huang P, Sasaki K, Sakaguchi M, Ochiai K, Huh NH, Nasu Y, Kumon H.
    • Journal Title

      Acta Med Okayama

      Volume: 66 Pages: 7-16

    • NAID

      120003850603

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Partial sensitization of human bladder cancer cells to a gene-therapeutic adenovirus carrying REIC/Dkk-3 by downregulation of BRPK/PINK12012

    • Author(s)
      Jin Y, Murata H, Sakaguchi M, Kataoka K, Watanabe M, Nasu Y, Kumon H, Huh NH
    • Journal Title

      Oncol Rep

      Volume: 27 Pages: 695-699

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] A novel tumor suppressor, REIC/Dkk-3 gene identified by our in vitro transformation model of normal human fibroblasts works as a potent therapeutic anti-tumor agent2011

    • Author(s)
      Sakaguchi M, Huh NH, Namba M
    • Journal Title

      Adv Exp Med Biol

      Volume: 720 Pages: 209-215

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Tumor suppressor REIC/Dkk-3 interacts with the dynein light chain, Tctex-12011

    • Author(s)
      Ochiai K, Watanabe M, Ueki H, Huang P, Fujii Y, Nasu Y, Noguchi H, Hirata T, Sakaguchi M, Huh NH, Kashiwakura Y, Kaku H, Kumon H
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 412 Pages: 391-395

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] TIRAP, an adaptor protein for TLR2/4, transduces a signal from RAGE phosphorylated upon ligand binding2011

    • Author(s)
      Sakaguchi M, Murata H, Yamamoto KI, Ono T, Sakaguchi Y, Motoyama A, Hibino T, Kataoka K, Huh NH
    • Journal Title

      PLoS One

      Volume: 6

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Intraperitoneal administration of an adenovirus vector carrying REIC/Dkk-3 gene suppresses peritoneal dissemination of scirrhous gastric carcinoma2011

    • Author(s)
      Than SS, Kataoka K, Sakaguchi M, Murata H, Abarzua F, Taketa C, Du G, Yashiro M, Yanagihara K, Nasu Y, Kumon H, Huh NH
    • Journal Title

      Oncol Rep

      Volume: 25 Pages: 989-995

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Expression of REIC/Dkk-3 in normal and hyperproliferative epidermis2011

    • Author(s)
      Du G, Kataoka K, Sakaguchi M, Abarzua F, Than SS, Sonegawa H, Makino T, Shimizu T, Huh NH
    • Journal Title

      Exp Dermtol

      Volume: 20 Pages: 273-277

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] A New Cytosolic Pathway from a Parkinson's Disease-associated Kinase, BRPK/PINK1 : Activation of Akt via mTORC22011

    • Author(s)
      Murata H, Sakaguchi M, Jin Y, Sakaguchi Y, Futami J, Yamada H, Kataoka K, Huh NH
    • Journal Title

      J Biol Chem

      Volume: 286 Pages: 7182-7189

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] A novel tumor suppressor. REIC/Dkk-3 gene identified by our in vitro transformation model of normal human fibroblasts works as a potent therapeuticaoti-tumor agent2011

    • Author(s)
      Sakaguchi M
    • Journal Title

      Adv Exp Med Biol

      Volume: 720 Pages: 209-215

    • DOI

      10.1007/978-1-4614-0254-1_17

    • ISBN
      9781461402534, 9781461402541
    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] TIRAP, an adaptor protein for TLR2/4, transduces a signal from RAGE phosphorylated upon ligand binding2011

    • Author(s)
      Sakaguchi M
    • Journal Title

      PLoS One

      Volume: 6 Issue: 8 Pages: e23132-e23132

    • DOI

      10.1371/journal.pone.0023132

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multiple functions of PINK1 at different intracellular locations : beyond neurodegenerative diseases2011

    • Author(s)
      Murata H
    • Journal Title

      Cell Cycle

      Volume: 10 Issue: 10 Pages: 1518-1519

    • DOI

      10.4161/cc.10.10.15445

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intraperitoneal administration of an adenovirus vector carrying REIC/Dkk-3 suppresses peritoneal dissemination of scirrhous gastric carcinoma2011

    • Author(s)
      Than SS
    • Journal Title

      Oncol Rep

      Volume: 25 Issue: 4 Pages: 989-995

    • DOI

      10.3892/or.2011.1149

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Expression of REIC/Dkk-3 in normal and hyperproliferative epidermis.2011

    • Author(s)
      Du Gang
    • Journal Title

      Experimental Dermatology

      Volume: 25 Pages: 273-277

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A New Cytosolic Pathway from a Parkinson's Disease-associated Kinase, BRPK/PINK1 : Activation of Aktvia mTORC2.2011

    • Author(s)
      Hitoshi Murata
    • Journal Title

      Journal of Biological Chemistry

      Volume: 286 Pages: 7182-7189

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Internalization of REIC/Dkk-3 protein by induced pluripotent stem cell-derived embryoid bodies and extra-embryonic tissues2010

    • Author(s)
      Kataoka K, Sakaguchi M, Li KP, Taketa C, Yamamoto KI, Du G, Funahashi H, Murata H, Huh NH
    • Journal Title

      Int J Mol Med

      Volume: 26 Pages: 853-859

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Application of a Thermo-Reversible Gelation Polymer, Mebiol Gel, for Stem Cell Culture and Regenerative Medicine2010

    • Author(s)
      Kataoka K, Huh NH
    • Journal Title

      Journal of Stem cells and Regenerative medicine

      Volume: 6 Pages: 10-14

    • Related Report
      2011 Final Research Report
  • [Journal Article] Down-regulation of Bip/Grp78 sensitizes resistant prostate cancer cells to gene-therapeutic overexpression of REIC/Dkk32010

    • Author(s)
      Tanimoto R, Sakaguchi M, Abarzua F, Kataoka K, Kurose K, Murata H, Nasu Y, Kumon H, Huh NH
    • Journal Title

      Int J Cancer

      Volume: 126 Pages: 1562-1569

    • NAID

      120004724432

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Application of a Thermo-Reversible Gelation Polymer, Mebiol Gel, for Stem Cell Culture and Regenerative Medicine.2010

    • Author(s)
      Ken Kataoka
    • Journal Title

      Journal of Stem Cells and Regenerative Medicine

      Volume: 6 Pages: 10-14

    • Related Report
      2010 Annual Research Report
  • [Journal Article] Down-regulation of Bip/Grp78 sensitizes resistant prostate cancer cells to gene-therapeutic overexpression of REIC/Dkk32010

    • Author(s)
      Ryuta Tanimoto
    • Journal Title

      Int J of Cancer 126

      Pages: 1562-1569

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Overexpression of REIC/Dkk-3 in normal fibroblasts suppresses tumor growth via induction of IL-72009

    • Author(s)
      Sakaguchi M, Kataoka K, Abarzua F, Tanimoto R, Watanabe M, Murata H, Than SS, Kurose K, Kashiwakura Y, Nasu Y, Kumon H, Huh NH
    • Journal Title

      J Biol Chem

      Volume: 284 Pages: 14236-14244

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] REIC/Dkk-3 stable transfection reduces the malignant phenotype of mouse prostate cancer RM9 cells2009

    • Author(s)
      Chen J, Watanabe M, Huang P, Sakaguchi M, Ochiai K, Nasu Y, Ouchida M, Huh NH, Shimizu K, Kashiwakura Y, Kaku H, Kumon H
    • Journal Title

      Int JMol Med

      Volume: 24 Pages: 89-794

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Overexpression of REIC/Dkk-3 in normal fibroblasts suppresses tumor growth via induction of IL-72009

    • Author(s)
      Masakiyo Sakaguchi
    • Journal Title

      J Biol Chem 284

      Pages: 12436-12444

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] REIC/Dkk-3 stable transfection reduces the malignant phenotype of mouse prostate cancer RM9 cells2009

    • Author(s)
      Jie Chen
    • Journal Title

      Int J Mol Med 24

      Pages: 789-794

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Expression pattern of REIC/Dkk-3 in mouse squamous epithelia

    • Author(s)
      Kataoka K, Du G, Maehara N, Murata H, Sakaguchi M, Huh N
    • Journal Title

      Clin Exp Dermatol

      Volume: (In press)

    • Related Report
      2011 Final Research Report
  • [Presentation] TIRAP is a critical transducer of RAGE-mediated inflammatory signaling2011

    • Author(s)
      阪口政清
    • Organizer
      第70回日本癌学会学術総会
    • Place of Presentation
      名古屋
    • Year and Date
      2011-10-05
    • Related Report
      2011 Annual Research Report
  • [Presentation] REIC/Dkk-3遺伝子治療~小胞体ストレスを介した多彩な抗腫瘍効果~2011

    • Author(s)
      片岡健
    • Organizer
      国立成育医療研究センター研究所特別セミナー
    • Place of Presentation
      東京
    • Year and Date
      2011-09-16
    • Related Report
      2011 Annual Research Report
  • [Presentation] PINK1 knockdown increases the apoptosis induced by adenovirus-mediated REIC/Dkk-3 overexpression on bladder cancer cells2011

    • Author(s)
      Jin Y
    • Organizer
      日本組織培養学会第84回大会
    • Place of Presentation
      東京
    • Year and Date
      2011-05-28
    • Related Report
      2011 Annual Research Report
  • [Presentation] REIC/Dkk-3遺伝子治療~小胞体ストレスを介した多彩な抗腫瘍効果~2011

    • Author(s)
      片岡健
    • Organizer
      国立成育医療研究センター研究所特別セミナー
    • Place of Presentation
      東京
    • Related Report
      2011 Final Research Report
  • [Presentation] The development of improved cultured epithelium usingβ3 cDNA-transduced keratinocytes to increase its take-rate2011

    • Author(s)
      Kubo M, Moriguchi M, Maehara M, Kataoka K, Huh NH, Inagawa K
    • Organizer
      17th International Society for Cellular Therapy Annual Meeting
    • Place of Presentation
      オランダ
    • Related Report
      2011 Final Research Report
  • [Presentation] 正常皮膚におけるREIC/Dkk-3の発現制御因子の検索2011

    • Author(s)
      前原奈都美、片岡健、杜剛、村田等、山本健一、阪口政清、許南浩
    • Organizer
      第34回日本分子生物学会年会
    • Place of Presentation
      横浜
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] Promotion of migration and invasion of osteosarcoma cells by S100A7 through RAGE2011

    • Author(s)
      Kataoka K, Sakaguchi M, Ono T, Morishita M, Yamamoto KI, Murata H, Huh NH
    • Organizer
      第70回日本癌学会学術総会
    • Place of Presentation
      名古屋
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] TIRAP is a critical transducer of RAGE-mediatedinflammatory signaling2011

    • Author(s)
      Sakaguchi M, Murata H, Yamamoto KI, Sakaguchi Y, Motoyama A, Hibino T, Kataoka K, Huh NH
    • Organizer
      第70回日本癌学会学術総会
    • Place of Presentation
      名古屋
    • Related Report
      2011 Final Research Report
  • [Presentation] Mitochondrial malfunction by PINK1 knockdown augments apoptosis induced by adenovirus carrying REIC/Dkk-32011

    • Author(s)
      Murata H, Jin Y, Sakaguchi M, Kataoka K, Huh NH
    • Organizer
      第70回日本癌学会学術総会
    • Place of Presentation
      名古屋
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] REIC/Dkk-3の扁平上皮における発現とその制御因子の探索2011

    • Author(s)
      片岡健、阪口政清、杜剛、前原奈都美、村田等、許南浩
    • Organizer
      日本組織培養学会第84回大会
    • Place of Presentation
      東京
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] PINK1 knockdown increases the apoptosis induced by adenovirus-mediated REIC/Dkk-3overexpression on bladder cancer cells2011

    • Author(s)
      Jin Y, Murata H, Kataoka K, Sakaguchi M, Huh NH
    • Organizer
      日本組織培養学会第84回大会
    • Place of Presentation
      東京
    • Related Report
      2011 Final Research Report
  • [Presentation] BRPK/PINK1 promotes tumor progression through activation of mTORC2 pathway2010

    • Author(s)
      村田等
    • Organizer
      第33回日本分子生物学会年会・第83回日本生化学会大会合同大会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-10
    • Related Report
      2010 Annual Research Report
  • [Presentation] TIRAP, an adaptor protein for TLR-2/-4, transduces a signal from RAGE phosphorylated upon ligand binding2010

    • Author(s)
      阪口政清
    • Organizer
      第33回日本分子生物学会年会・第83回日本生化学会大会合同大会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] Reduced expression of REIC/Dkk-3, a putative tumor suppressor gene, in hyperproliferative epidermis2010

    • Author(s)
      杜剛
    • Organizer
      第69回日本癌学会学術総会
    • Place of Presentation
      大阪
    • Year and Date
      2010-09-23
    • Related Report
      2010 Annual Research Report
  • [Presentation] PINK1/BRPK inhibits apoptotic cell death and enahances cellular invasiveness through an activation of mTORC2 pathway2010

    • Author(s)
      Murata H, Sakaguchi M, Kataoka K, Huh NH
    • Organizer
      The 16th International Charles Heidelberger Symposium on Cancer Research
    • Place of Presentation
      ポルトガル
    • Related Report
      2011 Final Research Report
  • [Presentation] BRPK/PINK1 promotes tumor progression through activation of mTORC2pathway2010

    • Author(s)
      Murata H, Sakaguchi M, Jin Y, Kataoka K, Huh NH
    • Organizer
      第33回日本分子生物学会年会・第83回日本生化学会大会合同大会
    • Place of Presentation
      神戸
    • Related Report
      2011 Final Research Report
  • [Presentation] TIRAP, an adaptor protein for TLR-2/-4, transduces a signal from RAGE phosphorylated upon ligand binding(多機能受容体RAGEの下流信号伝達機構の解明)2010

    • Author(s)
      Sakaguchi M, Murata H, Yamamoto KI, Ono T, Sakaguchi Y, Motoyama A, Hibino T, Kataoka K, Huh NH
    • Organizer
      第33回日本分子生物学会年会・第83回日本生化学会大会合同大会
    • Place of Presentation
      神戸
    • Related Report
      2011 Final Research Report
  • [Presentation] Intraperitoneal Administration of an Adenovirus Vector Carrying REIC/Dkk-3 Gene Suppresses Peritoneal Dissemination of Scirrhous Gastric Carcinoma Cells2010

    • Author(s)
      Kataoka K, Than SS, Sakaguchi M, Abarzua F, Taketa C, Yashiro M, Nasu Y, Kumon H, Huh NH
    • Organizer
      第69回日本癌学会学術総会
    • Place of Presentation
      大阪
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] Reduced expression of REIC/Dkk-3, a putative tumor suppressor gene, in hyperproliferativeepidermis2010

    • Author(s)
      Du G, Kataoka K, Sakaguchi M, Makino T, Shimizu T, Huh NH
    • Organizer
      第69回日本癌学会学術総会
    • Place of Presentation
      大阪
    • Related Report
      2011 Final Research Report
  • [Presentation] 分化誘導したマウスES細胞及びiPS細胞におけるCy3標識REIC/Dkk-3タンパク質のエンドサートーシスによる取り込み2010

    • Author(s)
      片岡健、阪口政清、李坤鵬、杜剛、武田千佳、舟橋弘晃、村田等、許南浩
    • Organizer
      日本組織培養学会第83回大会
    • Place of Presentation
      岡山
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] Effect of Adenovirus-mediated Overexpression of REIC/Dkk-3 on Scirrhous Gastric Carcinoma Cells2010

    • Author(s)
      Than SS, Kataoka K, Putranto EW, Murata H, Abarzua F, Taketa C, Yashiro M, Sakaguchi M, Huh NH
    • Organizer
      日本組織培養学会第83回大会
    • Place of Presentation
      岡山
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] Current achievements and clinical application of stem cell research in Okayama University. International Symposium and Workshop for Stem Cell 〓2009

    • Author(s)
      Ken Kataoka
    • Organizer
      International Symposium and Workshop for Stem Cell Therapy
    • Place of Presentation
      Makassar, Indonesia
    • Year and Date
      2009-10-31
    • Related Report
      2009 Annual Research Report
  • [Presentation] Promoter-based improvement of gene expression in cancer therapieutic adenovirus vector varrying REIC/Dkk-32009

    • Author(s)
      阪口政清
    • Organizer
      第68回日本癌学会学術総会
    • Place of Presentation
      神奈川県横浜市
    • Year and Date
      2009-10-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] 幹細胞基礎研究の現状と未来~In vivo/in vitroにおける組織幹細胞研究~2009

    • Author(s)
      片岡健
    • Organizer
      日本組織培養学会第82回大会
    • Place of Presentation
      栃木県壬生町
    • Year and Date
      2009-05-18
    • Related Report
      2009 Annual Research Report
  • [Presentation] Current achievements and clinical application of stem cell research in Okayama University2009

    • Author(s)
      Kataoka K
    • Organizer
      International Symposium and Workshop for Stem Cell Therapy
    • Place of Presentation
      インドネシア
    • Related Report
      2011 Final Research Report
  • [Presentation] 幹細胞基礎研究の現状と未来~ In vivo/in vitroにおける組織幹細胞研究~2009

    • Author(s)
      片岡健, 許南浩
    • Organizer
      本組織培養学会第82回大会シンポジウム
    • Place of Presentation
      栃木
    • Related Report
      2011 Final Research Report
  • [Presentation] Impact of Bcl-xL deficiency in mouse keratinocytes on susceptibility to both UVB-and chemically-induced skin carcinogenesis2009

    • Author(s)
      Kim, DJ, Kataoka K, Sano S, Kiguchi K, DiGiovanni J
    • Organizer
      100th Annual Meeting of American Association for Cancer Research
    • Place of Presentation
      米国
    • Related Report
      2011 Final Research Report
  • [Presentation] Intraperitoneal Normal human fibroblast mis-targetedly infected with adenovirus REIC have a tumor-suppressive abilitu in vivo2009

    • Author(s)
      Sakaguchi M, Kataoka K, Abarzua F, Tanimoto R, Watanabe M, Murata H, Than SS, Nasu Y, Kumon H, Huh NH
    • Organizer
      第32回日本分子生物学会年会
    • Place of Presentation
      横浜
    • Related Report
      2011 Final Research Report
  • [Presentation] BRPK/PINK1のmTORC2経路活性化を介したがん浸潤への寄与2009

    • Author(s)
      村田等、阪口政清、片岡健、許南浩
    • Organizer
      第68回日本癌学会学術総会
    • Place of Presentation
      横浜
    • Related Report
      2011 Final Research Report
  • [Presentation] 超高効率発現ベクターの開発とがん遺伝子治療薬としてのREIC/Dkk-3アデノウィルスベクターへの応用2009

    • Author(s)
      阪口政清、片岡健、村田等、許南浩
    • Organizer
      第68回日本癌学会学術総会
    • Place of Presentation
      横浜
    • Related Report
      2011 Final Research Report

URL: 

Published: 2009-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi