Amelioration of murine listeriosis in the absence of NK cells and NKT cells and the analysis of the influence of double-stranded RNA on anti-bacterial resistance

• Project/Area Number: 22590388
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Bacteriology (including Mycology)
• Research Institution: Gunma University
• Principal Investigator: EMOTO Yoshiko 群馬大学, 大学院・保健学研究科, 研究員 (30542344)
• Co-Investigator(Kenkyū-buntansha): EMOTO Masashi 群馬大学, 大学院・保健学研究科, 教授 (70232981)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: リステリア / 細胞内寄生細菌 / NK 細胞 / 二本鎖 RNA / PolyI:C / NK細胞 / 二本鎖RNA / ＮＫ細胞 / インターフェロン-γ / ナチュラルキラー細胞 / NKT細胞

Research Abstract

NK1.1^+ cells have been considered to play a protective role in various bacterial infections by secreting IFN-・upon infection. Yet, we have obtained the first evidence that NK cells play a detrimental role in protection against intracellular bacteria, Listeria monocytogenes. In contrast, we also found that anti-listerial resistance was markedly enhanced by PolyI:C and that NK cells participate in this mechanism. Thus, because our findings clearly demonstrated the new role of NK cells in intracellular bacterial infection, we consider it likely that our study contributes to the development not only of bacteriology, but also of immunology.

Research Products

• [Presentation] Amelioration of murine listeriosis in the absence of NK and NKT cells (2013)
  • Author(s): Kaneko M., Emoto Y., Yoshizawa I., Hurwitz R., Brinkmann V., Kafmann S.H.E., Emoto M.
  • Organizer: 第40回日本免疫学会総会・学術集会
  • Place of Presentation: 幕張
• [Presentation] Amelioration of murine listeriosis in the absence of NK and NKT cells (2013)
  • Author(s): Emoto Y., Yoshizawa I., Hurwitz R., Brinkmann V., Kafmann S.H.E, Emoto M.
  • Organizer: Joint annual meeting Italian Society of Immunology, Clinical Immunology and Allegorogy, and German Society of Immunology
  • Place of Presentation: Riccione, Italy
• [Presentation] Amelioration of murine listeriosis in the absence of NK and NKT cells (2013)
  • Author(s): Emoto Y., Yoshizawa I., Hurwitz R., Brinkmann V., Kafmann S.H.E., Emoto M.
  • Organizer: 8th International Congress of Bacteriology and Applied Microbiology
  • Place of Presentation: Sapporo
• [Presentation] Amelioration of murine listeriosis in the absence of NK cells and NKT cells (2013)
  • Author(s): Kaneko, M., Emoto, Y., Yoshizawa, I., Hurwitz, R., Brinkmann, V., Kaufmann, S.H.E. Emoto. M.
  • Organizer: 第22 回日本生体防御学会学術総会
  • Place of Presentation: 那覇
• [Presentation] Amelioration of murine listeriosis in the absence of NK cells and NKT cells (2011)
  • Author(s): 江本善子
  • Organizer: German Society of Immunology
  • Place of Presentation: Leipzig (Germany)
  • Year and Date: 2011-09-22