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膵臓癌に対する、新たな分子標的としてのFGFR-2 IIIcの研

                          究

  Fibroblast Growth Factor Receptor-2 IIIc as a Novel

       Therapeutic Target for Pancreatic Cancer
Molecular Targeting Therapy for Cancer
      Anti-receptor mAbs      Anti-ligand mAbs
    Trastuzumab (Herceptin)   Bevacizumab (Avastin)
    Panitumumab (Vectibix)
    Rituximab (Rituxan)
    Cetuximab (Erbitux)                      Tyrosine Kinase Inhibitors
    Gemtuzumab ozogamicin                              Gefitinib (Iressa)
                (Mylotarg)                             Imatinib (Gleevec)
    Ibritumomab tiuxetan                               Dasatinib (Sprycel)
                 (Zevalin)                             Nilotinib (Tasingna)
                                                       Sorafenib (Nexavar)
                                                       Sunitinib (Sutent)
                                                       Erlotinib (Tarceva)

                                Nucleus
Fibroblast Growth
Factor Receptor 2 IIIc
(FGFR-2 IIIc)



癌には、多くの分子標的治療が行われています。私達は癌治療のための新たな分子標
的としてFGFR-2 IIIcに注目し、研究を続けています。
Characteristics of FGFR-2
 • Located in chromosome 10q26

       FGFR-2                 IIIb                 IIIc
                                     Alternative
                                      splicing
                                        Exon

                                          8

                                          9

  Cell membrane



           Epithelial cells                               Mesenchymal cells

                  Epithelial mesenchymal transition (EMT)?
FGFR-2は、細胞外ドメインの選択的スプライシングにより、IIIbとIIIcのアイソフォーム
がつくられます。IIbアイソフォームが主に上皮細胞に、IIIcが非上皮細胞に発現するこ
とからEMTに関与すると考えられています。
FGFR-2 IIIc Isoform in Various Cancers
          FGFR-2              IIIb              IIIc




   Cell membrane




Prostate Cancer: Androgen dependence to independence. Tumor progression

Bladder Cancer: Correlated to EMT. Tumor progression and Invasion

前立腺癌や、膀胱癌ではFGFR-2のIIIbからIIIc アイソフォームへの転換(クラススイッ
チ)が癌を増悪させると報告されています。
FGFR-2 IIIc in Colorectal Cancer
• correlates with distant metastasis and poor prognosis

• Induces cell growth, migration and invasion in vitro

• forms larger tumors in subcutaneous tissues and the cecum
  of nude mice

• antibody inhibited cell growth and migration of colorectal
  cancer cells

         Matsuda Y. et al., Mol Cancer Ther ; 11 (9) September 2012


私達の最近の研究では、FGFR-2 IIIcが大腸癌の増殖、浸潤、転移に関わっており、新
たな大腸癌の分子治療標的となる可能性が明らかになりました。
FGFR-2 isoforms in Pancreatic Cancer
                      Fibroblast growth factor (FGF)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23



         FGFR-2                IIIb             IIIc




    40% of Pancreatic cancer                           70% of Pancreatic cancer

 Cell membrane




 ヒトの膵臓癌の組織では、FGFR-2 IIIbが40%の症例で、IIIcが70%の症例に多く発現
 し、それぞれ異なった線維芽細胞増殖因子(FGF)が結合していることがわかりまし
Roles of FGFR-2 isoforms in Pancreatic Cancer
                              IIIb                   IIIc




   40% of Pancreatic cancer                                    70% of Pancreatic cancer

 Cell membrane




VEGF-A, MMP-9 expression           Venous invasion           Proliferation, Metastasis, CSC
   Ishiwata et al, Am J Pathol, 1998
   Cho et al, Am J Pathol, 2007                             Ishiwata et al., Am J Pathol 2012
   Cho and Matsuda et al, Int J Oncol, 2012
 膵臓癌では、FGFR-2 IIIcの発現が癌の増殖や転移、癌幹細胞の機能に影響を与えてお
 り、新たな治療標的となる可能性があることを、最近、報告しました。
Thank you for your attention
現在は、FGFR-2 のIIIbからIIIcへの転換を調節して
いるタンパクの研究や、FGFR2の発現亢進の機序
解明に向けた研究を続けています。

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Fgfr 2紹介

  • 1. 膵臓癌に対する、新たな分子標的としてのFGFR-2 IIIcの研 究 Fibroblast Growth Factor Receptor-2 IIIc as a Novel Therapeutic Target for Pancreatic Cancer
  • 2. Molecular Targeting Therapy for Cancer Anti-receptor mAbs Anti-ligand mAbs Trastuzumab (Herceptin) Bevacizumab (Avastin) Panitumumab (Vectibix) Rituximab (Rituxan) Cetuximab (Erbitux) Tyrosine Kinase Inhibitors Gemtuzumab ozogamicin Gefitinib (Iressa) (Mylotarg) Imatinib (Gleevec) Ibritumomab tiuxetan Dasatinib (Sprycel) (Zevalin) Nilotinib (Tasingna) Sorafenib (Nexavar) Sunitinib (Sutent) Erlotinib (Tarceva) Nucleus Fibroblast Growth Factor Receptor 2 IIIc (FGFR-2 IIIc) 癌には、多くの分子標的治療が行われています。私達は癌治療のための新たな分子標 的としてFGFR-2 IIIcに注目し、研究を続けています。
  • 3. Characteristics of FGFR-2 • Located in chromosome 10q26 FGFR-2 IIIb IIIc Alternative splicing Exon 8 9 Cell membrane Epithelial cells Mesenchymal cells Epithelial mesenchymal transition (EMT)? FGFR-2は、細胞外ドメインの選択的スプライシングにより、IIIbとIIIcのアイソフォーム がつくられます。IIbアイソフォームが主に上皮細胞に、IIIcが非上皮細胞に発現するこ とからEMTに関与すると考えられています。
  • 4. FGFR-2 IIIc Isoform in Various Cancers FGFR-2 IIIb IIIc Cell membrane Prostate Cancer: Androgen dependence to independence. Tumor progression Bladder Cancer: Correlated to EMT. Tumor progression and Invasion 前立腺癌や、膀胱癌ではFGFR-2のIIIbからIIIc アイソフォームへの転換(クラススイッ チ)が癌を増悪させると報告されています。
  • 5. FGFR-2 IIIc in Colorectal Cancer • correlates with distant metastasis and poor prognosis • Induces cell growth, migration and invasion in vitro • forms larger tumors in subcutaneous tissues and the cecum of nude mice • antibody inhibited cell growth and migration of colorectal cancer cells Matsuda Y. et al., Mol Cancer Ther ; 11 (9) September 2012 私達の最近の研究では、FGFR-2 IIIcが大腸癌の増殖、浸潤、転移に関わっており、新 たな大腸癌の分子治療標的となる可能性が明らかになりました。
  • 6. FGFR-2 isoforms in Pancreatic Cancer Fibroblast growth factor (FGF) 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23 FGFR-2 IIIb IIIc 40% of Pancreatic cancer 70% of Pancreatic cancer Cell membrane ヒトの膵臓癌の組織では、FGFR-2 IIIbが40%の症例で、IIIcが70%の症例に多く発現 し、それぞれ異なった線維芽細胞増殖因子(FGF)が結合していることがわかりまし
  • 7. Roles of FGFR-2 isoforms in Pancreatic Cancer IIIb IIIc 40% of Pancreatic cancer 70% of Pancreatic cancer Cell membrane VEGF-A, MMP-9 expression Venous invasion Proliferation, Metastasis, CSC Ishiwata et al, Am J Pathol, 1998 Cho et al, Am J Pathol, 2007 Ishiwata et al., Am J Pathol 2012 Cho and Matsuda et al, Int J Oncol, 2012 膵臓癌では、FGFR-2 IIIcの発現が癌の増殖や転移、癌幹細胞の機能に影響を与えてお り、新たな治療標的となる可能性があることを、最近、報告しました。
  • 8. Thank you for your attention 現在は、FGFR-2 のIIIbからIIIcへの転換を調節して いるタンパクの研究や、FGFR2の発現亢進の機序 解明に向けた研究を続けています。