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2001 Fiscal Year Final Research Report Summary

Alterations of ERK gene and the signal transduction pathway in oral squamous cell carcinoma and the roles in the genesis of the cancer

Research Project

Project/Area Number 12470381
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Morphological basic dentistry
Research InstitutionTokyo Medical and Dental University

Principal Investigator

TSUCHIDA Nobuo  Graduate School, Tokyo Med & Dent Univ. Professor, 大学院・医歯学総合研究科, 教授 (60089951)

Co-Investigator(Kenkyū-buntansha) NAKAJIMA Takuma  Graduate School, Tokyo Med & Dent Univ. Assoc. Professor, 大学院・医歯学総合研究科, 助教授 (90256678)
ENOMOTO Shouji  Graduate School, Tokyo Med & Dent Univ. Professor, 大学院・医歯学総合研究科, 教授 (40013940)
AMAGASA Teruo  Graduate School, Tokyo Med & Dent Univ. Professor, 大学院・医歯学総合研究科, 教授 (00014332)
SAKAI. Eiki  Dokkyo Universisty School of Medicine Lecturer, 医学部, 講師 (60292976)
IRITANI Akio  Graduate School, Tokyo Med & Dent Univ. Res. Assistant, 歯学部, 教務職員 (20292972)
Project Period (FY) 2000 – 2001
KeywordsCGH / oral cancer / ERK / amplification / two hybrid system / Naf1 / H-ras / EGFR
Research Abstract

This grant research was aimed to find abnormalities of signal transduction pathway of ERK2 in oral cancers, and to elucidate roles of the signals in the genesis of this cancer. Results obtained were
(1) by CGH analyzes we found that 3 oral squamous cell carcinoma(OSCC) cell lines had the 1.7 Mb commonly amplified region al chr. 22 q11.2.-12, where ERK2 is mapped. Overexpression of ERK mRNA was detected in the 2 cell lines. Interestingly, there was no overlapping in ERK overexpression , ras mutation and EGFR amplification in 15 but one cell line, being consistent with that these proteins work in the same pathway from EGF to ERK.
(2) The aberrant growth signal transduction from EGF to ERK or from EGF to AKT was found in 2/10(20%) or 3/5(60%), respectively, cell lines, suggesting the frequent abnormal signal transduction.
(3) 5 Genes for proteins which were first shown to interact with ERK2 were isolated, including one new gene. One of the known protein, Naf1(HIV Nef associated factor) was found to be localized in the cytoplasm, phosphorylated by ERK, and suppressed the translocation of ERK to the nuclei. Further Naf1 phosphorylation was important in binding to HIV Nef.
(4) in colorectal cancer tissues overexpression of ERK or H-ras was.closely related to cases with distant metastasis. Further coordinate activation of signal proteins from EGFR to ERK were observed in cancer tissues but not in the adjacent normal tissue, suggesting the importance of this pathway in vivo.
(5) an MEK inhibitor (U0126) suppressed the growth of high ERK-expressor more efficiently than high EGFR-expressor.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Matsumura K, Iritani A, Enomoto S, Tsuchida N 他: "Defining a common region of DNA amplification at 22q11.2-12 in head and neck squamous cell carcinomas by quantitative FISH analysis"Genes chromosomes Cancer. 29. 207-212 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Feng J.Hua F.Shuo R.Chongfeng G.Huimian X.Nakajima T.Subao W.Tsuchida N.: "Upregulation of non-mutated H-ras and its upstream and downstream signaling proteins in colorectal cancer"Oncology Report. 8. 1409-1413 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Goo C F, Nakajima T, Tsuchida N: "Caspase-dependent cytosolic release of cytochrome c and membrane translocation of Bax in p53-induced apoptosis"Exp. Cell. Res.. 265. 145-151 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 5: Krishnamurthy J.Kannan K.Feng J.Mohanprasad BK.Tsuchida N.Shanmugam G.: "Mutational analysis of the candidate tumor suppressor gene ING1 in Indian oral squamous cell carcinoma"Oral Oncology. 37. 222-224 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kannan K.Krishnamurthy J.Feng J.Nakajima T.Tsuchida N.Shanmugam G.: "Mutation profile of the p53, fhit, p7SINK4a/p19ARF and H-ras genes in Indian breast carcinomas"Int. J Oncol.. 17. 1031-1035 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Viswanathan M, Tsuchida N, Shanmugam G.: "Selective deletion of p14(ARF) exon 1beta of the INK4a locus in oral squamous cell carcinomas of Indians"Oral Oncology. 37. 341-314 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsumura K, Iritani A, Enomoto S, Torikata C, Matsuyama S, Kurita A, Kurahashi H, Tsuchida N.: "Defining a common region of DNA amplification at 22q11.2-12 in head and neck squamous cell carcinomas by quantitative FISH analysis"Genes Chromosomes Cancer. 29(3). 207-212 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Feng J, Hua F, Shuo R, Chongfeng G, Huimian X, Nakajima T, Subao W, Tsuchida N.: "Upregulation of non-mutated H-ras and its upstream and downstream signaling proteins in colorectal cancer"Oncol Rep.. 8(6). 1409-1413 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Gao CF, Ren S, Zhang L, Nakajima T, Ichinose S, Kara T, Koike K, Tsuchida N.: "Caspase-dependent cytosolic release of cytochrome c and membrane translocation of Bax in p53-induced apoptosis"Exp Cell Res.. 265(1). 145-151 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Krishnamurthy J, Kannan K, Feng J, Mohanprasad BK, Tsuchida N, Shanmugam G.: "The tumor suppressor gene ING1 in Indian oral squamous cell carcinoma"Oral Oncol.. 37(3). 222-224 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kannan K, Krishnamurthy J, Feng J, Nakajima T, Tsuchida N, Shanmugam G.: "Mutation profile of the p53, fhit, p16INK4a/p19ARF and H-ras genes in Indian breast carcinomas"Int J Oncol.. 17(5). 1031-1035 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Viswanathan M, Tsuchida N, Shanmugam G.: "Selective deletion of p14(ARF) exon 1beta of the INK4a locus in oral squamous cell carcinomas of Indians"Oral Oncol. 37(4). 341-314 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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