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単一細胞バイアビリティイメージング

Research Project

Project/Area Number 11227201
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionTohoku University

Principal Investigator

末永 智一  東北大学, 大学院・工学研究科, 教授 (70173797)

Co-Investigator(Kenkyū-buntansha) 尾形 健明  山形大学, 大学院・理工学研究科, 教授 (50091830)
樋口 秀男  東北大学, 大学院・工学研究科, 助教授 (90165093)
大友 征宇  東北大学, 大学院・工学研究科, 助教授 (10213612)
木下 一彦  慶応義塾大学, 理工学部, 教授 (30124366)
Project Period (FY) 1999 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥155,500,000 (Direct Cost: ¥155,500,000)
Fiscal Year 2002: ¥35,200,000 (Direct Cost: ¥35,200,000)
Fiscal Year 2001: ¥41,800,000 (Direct Cost: ¥41,800,000)
Fiscal Year 2000: ¥49,600,000 (Direct Cost: ¥49,600,000)
Fiscal Year 1999: ¥28,900,000 (Direct Cost: ¥28,900,000)
Keywordsイメージング / 細胞活性 / 電気化学顕微鏡 / 光合成細菌 / 共焦点レーザー顕微鏡 / 光トラッピング / 好中球内顆粒 / 電子スピン共鳴 / 共焦点顕微鏡 / 細胞運動 / フリーラジカル / 一分子観察 / 超高感度蛍光顕微鏡
Research Abstract

本年度は以下の結果を得た。
(1)マイクロスタンプ法などによって,単一細胞レベルで細胞を配列させることができた。電気化学顕微鏡による呼吸量計測によるバイアビリティイメージングを行い,細胞パターンの形状が細胞活性に与える影響を調べた。また,心筋細胞のパターンにおけるギャップ結合の活性についても薬理学的な応答を評価することができた。
(2)バリノマイシンの添加に伴ってE.coli細胞の膜内外にカリウム拡散電位が形成され、蛍光強度が増大して行く様子が,Bis-oxonol型の膜電位感受性色素であるDiBAC_4(3),および共焦点レーザー顕微鏡を用いて観測できた。また,脂質の再構成膜小胞を作製して膜内外のpHを^<31>P核磁気共鳴で観測することも試み,脂質にコレステロールを加えて作製した膜小胞では、膜内外のpH差が観測され、それが24時間以上持続できることが明らかとなった。
(3)光トラップで好中球内顆粒を捕捉したのち,トラップの中心を1秒間矩形波状に100nm変位させ,顆粒の動きを4分割光ダイオードで分析した。また,毒素タンパク質1ukFとHSのシステインミュータントを作成し,そのシステインに蛍光をラベルした.この毒素タンパク質と血球を反応させて,タンパク質の膜上での集合の様子を,1分子蛍光観察から決定した.
(4)サクラマスの魚卵について,受精,孵化,ストレス負荷時における生体内酸化還元機能および形態変化の情報を得るために,in vivo ESR計測および,in vivo Optical Coherent Tomography (OCT)計測を行った。ポータブルESR装置を飼育現場に搬入して測定を行ったところ,正常卵のみに呼吸に起因すると考えられるスピンプローブ剤のESR信号強度がリズムを刻んで増減する現象を捉えることができた。

Report

(4 results)
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (34 results)

All Other

All Publications (34 results)

  • [Publications] M.Nishizawa: "Micropatterning of HeLa Cells on Glass Substrates and Evaluation of Respiratory Activity Using Microelectrodes"Langmuir. 18. 3645-3649 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Kasai: "Simultaneous Detection of Uric Acid and Glucose on a Dual-Enzyme Chip Using Scanning Electrochemical Microscopy/Scanning Chemiluminescence Microscopy"Anal.Chim. Acta. 458. 263-270 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Nishizawa: "Micropatterning HeLa Cell Culture on PEG Monolayer-Coated Glass Substrates"Chem.Lett.. 9. 904-905 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Kaji: "Intracellular Ca^<2+> Imaging for Micropatterned Cardiac Myocytes"Biotech.Bioeng.. 81. 748-751 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Z.-Y.Wang: "Selective Detection and Assignment of the Solution NMR Signals of Bacteriochlorophyll a in a Reconstituted Subunit of a Light-Harvesting Complex"J.Am.Chem.Soc.. 124. 1072-1078 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Umetsu: "Circular and Magnetic Circular Dichroism Studies of Bacteriochlorophyll c Aggregates : T-Shaped and Antiparallel Dimers"J.Phys.Chem. B. 106. 3987-3995 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Z.-Y.Wang: "N-Terminal Methylation of the Core Light-Harvesting Complex in Purple Photosynthetic Bacteria"FEBS Letters. 516. 164-168 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Kaseda: "Coordination of Kinesin's Two Heads Studied with Mutant Heterodimer"Proc.Natl.Acad.Sci. 96. 18058-16063 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Higuchi: "Directionality and Processivity of Molecular Motors"Current Opinion in Cell Biology. 14. 50-57 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Nishiyama: "Chemomechanical Coupling of the Forward and Backward Steps of Single Kinesin Molecules"Nature Cell Biol.. 4. 790-797 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] V.T.Nguyen: "Controlling Pore Assembly of Staphylococcal Hemolysin by Low Temperature and by Disulfide Bond Formation in Double-Cystein LukF Mutants"Molecular Microbiology. 45. 1485-1498 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Hirano: "Microspots of GOD-HRP Bienzyme for Scanning Chemiluminescence Microscopy with Higher Resolution"Electrochemistry. 68. 946-948 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Kaya: "A Microbial Chip Combined with Scanning Electrochemical Microscopy"Biotech. Bioeng.. 76. 391-394 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Nishizawa: "Micropatterning of HeLa Cells on Glass Substrates and Evaluation of Respiratory Activity Using Microelectrodes"Langmuir. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Luo: "The dimerization of folded monomers of ribulose-1,5-bisphosphate carboxylase/oxygenase"J. Biol. Chem.. 276. 7023-7026 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Z.-Y.Wang: "Methionine oxidation and its effect on the stability of reconstituted subunit of light-harvesting complex from Rhodospirillum rubrum"Eur. J. Biochem.. 268. 3375-3382 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Z.-Y.Wang: "Re-identification of the N-terminal amino acid residue and its modification of b-polypeptide of light-harvesting complex I from Rhododospirillum rubrum"Photosynth. Res.. 70. 321-323 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Z.-Y.Wang: "Selective detection and assignment of the solution NMR signals of bacteriochiorophyll a in a reconstituted subunit of a light-harvesting complex"J. Am. Chem. Soc.. 124(印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Nishiyama: "Substeps within the 8 nm step per ATPase cycles of single kinesin molecules"Nature Cell Biol.. 4. 425-428 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] H.Higuchi: "Directionality and processivity of molecular motors"Current Opinion in Cell Biology. 14. 50-57 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] W.Liu: "Synthesis of water-soluble endoperoxides as a singlet oxygen source"ITE Lett. on Batteries, New Technologies & Medicine. 2. 98-101 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Ito: "Determination of absolute concentration of nitroxide radical by radio frequency EPR imaging"Applied Magnetic Resonance. 20. 257-263 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Ito: "ZnO marker for a radio frequency ESR spectrometer"Chemistry Letters. 928-929 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Kasai: "Immunoassay of MRSA-related Toxic Protein, Leukocidin, with Scanning Electrochemical Microscopy"Anal.Chem.. 72. 5761-5765 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Umetsu: "Interaction of photosynthetic pigments with various organic solvents 2 Application of magnetic circular dichroism to bacteriochlorophyll a and light-harvesting complex 1"Biochim.Biophys.Acta. 1457. 106-117 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] S.A.Endow: "A mutant of the motor protein kinesin that moves in both directions on microtubules."Nature. 406. 913-916 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Ito: "Determination of absolute concentration of nitroxide radical by radio frequency EPR imaging"Applied Magnetic Resonance. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Adachi: "Stepping rotation of F1-ATPase visualized through angle-resolved single-fluorophore imaging"Proc.Natl.Acad.Sci.. 97. 7243-7247 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Harada: "Direct observation of DNA rotation during transcription by Escherichia coli-RNA polymerase"Nature. 409. 113-115 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Z.-Y.Wang: "NMR in Microbiology : Theory and Applications Chapter 10 In situ measurements of enzyme activities by NMR"Horizon Scientific Press, Wymondham. 21 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 珠玖仁: "電気化学顕微鏡の基礎と応用"表面技術. 51. 46-52 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] E.Hirakawa: "Processive movement of single 22S dynein molecules restricted at low ATP concentrations"Proc.Natl.Acad.Sci.USA. (印刷中).

    • Related Report
      1999 Annual Research Report
  • [Publications] 樋口秀男: "モータータンパク質1分子の動きを見る,化学反応も見る"可視化技術. 20. 13-18 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Kinoshita,Jr.: "F1-ATPase : a highly efficient rotary ATP machine"Essays Biochem. (印刷中).

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2018-03-28  

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