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

1996 Fiscal Year Final Research Report Summary

Analysis of the Expression Mechanism of Immunoglobulin E by Interleukin-4

Research Project

Project/Area Number 07670385
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Immunology
Research InstitutionNational Institute of Genetics

Principal Investigator

IZUHARA Kenji  National Institute of Genetics, Department of Human Genetics, Assistant Professor, 総合遺伝系, 助手 (00270463)

Project Period (FY) 1995 – 1996
KeywordsInterleukin-4 / immunoglobulin E / IL-2 Receptor gamma chain / IL-4 Receptor / Jak3 / STAT6
Research Abstract

(1) Interleukin-4 (IL-4) and IL-13 are functionally similar cytokines. The functional IL-4 receptor (IL-4R) consists of the IL-4Ralpha chain (IL-4Ralpha) and the IL-2Rgamma chain (gamma_c), which is shared by the IL-2, IL-7, IL-9, and IL-15 receptors. The functional IL-13R is thought to involve the IL-4Ralpha, but not gammac. In this study, we have analyzed activation of members of the Janus tyrosine kinase (Jak) family and signal transducers and activators of transcription (STAT) 6 induced by IL-4 and IL-13 in EBV-transformed B cells derived from two patients of X-linked severe combined immunodeficiency (XSCID), who have mutations of the gamma_c gene in the extracellular and intracellular domains. In these B cells, IL-4 failed to induce tyrosine phosphorylation of Jak3 and activation of STAT6, or activation of these molecules was significantly decreased compared with EBV-transformed normal B cells. In contrast, IL-13 activated STAT6 in thses cells as well as normal B cells. However, Jak3 was not activated by IL-13, even in normal B cells. These results clearly indicated that gamma_c is essential for activation of Jak3 and STAT6 in the signal transduction pathway of IL-4 in human B cells, and that IL-13 dose not utilize gamma_c but activates STAT6 through an alternative pathway, which is not impaired in B cells of XSCID patients.

  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] Izuhara,K.: "Signal Transdoction pathway of Interleukin-4 and Interleukin-13 in human B cells derived from X-linked severe combined immuno deficiency patients" J.Biol.Chem.271. 619-622 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 出原賢治: "LI-4によって誘導される転写因子IL-4STAT" 臨床免疫. 27. 809-813 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 出原賢治: "インターロイキン4のシグナル伝達機構" 医学のあゆみ. 174. 1019-1022 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 出原賢治: "IL-4、IL-7受容体を介するシグナル伝達" 細胞工学. 14. 1153-1157 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 眞弓光文: "X染色体連鎖重症複合免疫不全症B細胞のシグナル伝達機構の解析" 厚生省特定疾患原発性免疫不全症候群調査研究班平成7年度研究報告書. 80-82 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 出原賢治: "伴性重症複合免疫不全症患者におけるIL-4のシグナル伝達" 日本臨床血液学会誌. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Izuhara, K.: "Signal Transduction Pathway of Interleukin-4 and Interleukin-13 in Human B Cells Derived from X-Linked Severe Combined Immunodeficiency Patients" J.Biol.Chem.Volume 271. 619-622 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izuhara, K.: "A Transcriptional Factor Induced by IL-4, IL-4 STAT.(in Japanese)" Rinsho Meneki. Vol.27. 809-813 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izuhara, K.: "The Signal Transduction Mechanism of Interleukin-4. (in Japanese)" Igaku no Ayumi. Vol.174. 1019-1022 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izuhara, K.: "The Signal Transduction through the IL-4, and IL-7 Receptors. (in Japanese)" Saibou Kougaku. Vol.14. 1153-1157 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izuhara, K.: "The Signal Transduction of Interleukin-4 in X-Linked Severe Combinded Immunodeficiency Patients. (in Japanese)" Nippon Rinsho Ketsueki Gakkaishi. (in press).

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

URL: 

Published: 1999-03-09  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi