川上 了史 ( カワカミ ノリフミ )

Kawakami, Norifumi

写真a

所属(所属キャンパス)

理工学部 生命情報学科 ( 矢上 )

職名

専任講師

外部リンク

経歴 【 表示 / 非表示

  • 2009年04月
    -
    2013年03月

    名古屋大学, 物質科学国際研究センター

  • 2013年04月
    -
    2014年03月

    名古屋大学, 大学院理学研究科生命理学専攻

  • 2014年04月
    -
    2017年03月

    慶應義塾大学, 理工学部

  • 2017年04月
    -
    2020年03月

    慶應義塾大学, 理工学部, 専任講師(有期)

  • 2020年04月
    -
    継続中

    慶應義塾大学, 理工学部

学歴 【 表示 / 非表示

  • 2002年04月
    -
    2004年03月

    宇部工業高等専門学校, 専攻科物質科学専攻

    高等専門学校, 修了

  • 2004年04月
    -
    2006年03月

    広島大学, 大学院理学研究科博士課程前期

    博士前期

  • 2006年04月
    -
    2009年03月

    広島大学, 大学院理学研究科博士課程後期

    博士後期

学位 【 表示 / 非表示

  • 博士(理学), 広島大学, 課程, 2009年03月

免許・資格 【 表示 / 非表示

  • 放射線取扱主任者第一種, 2015年03月

 

研究分野 【 表示 / 非表示

  • 自然科学一般 / 地球生命科学 (金属イオン、金属タンパク質、実験室進化)

  • ナノテク・材料 / 生物分子化学 (タンパク質、ナノ粒子、ハイドロゲル)

研究テーマ 【 表示 / 非表示

  • 生命の元素に対する進化的可塑性の解明, 

    2015年04月
    -
    継続中

  • タンパク質を鋳型とした分子構造の設計と材料への応用, 

    2014年03月
    -
    継続中

 

著書 【 表示 / 非表示

  • Dual Modification of Artificial Protein Cage

    Kawakami N., Nasu E., Miyamoto K., Methods in Molecular Biology, 2023年

     概要を見る

    Chemical modifications of proteins confer new functions on them or modulate their original functions. Although various approaches are developed for modifications, modifications of the two different reactive sites of proteins by different chemicals are still challenging. In this chapter, we show a simple approach for selective modifications of both interior and exterior surfaces of protein nanocages by two different chemicals based on a molecular size filter effect of the surface pores.

論文 【 表示 / 非表示

  • misteINK: a protein nanocage-based ink with reversible, stimuli-responsive color shifts

    Yamashita M., Kawakami N., Arai R., Ikeda A., Moriya T., Senda T., Miyamoto K.

    Biomaterials Science 13 ( 23 ) 6652 - 6661 2025年12月

    ISSN  20474830

     概要を見る

    Dyes exhibiting polarity-dependent color changes, known as solvatochromism, have great potential for creating sensors, smart materials, and responsive coatings. However, full-range color shifts require a technique to disperse dyes across a wide range of solvent polarities, which remains a persistent challenge. For example, hydrophobic dyes often aggregate in water, preventing effective color shifts. Although surfactants can assist in dye dispersion, they can also prevent solvent molecules from accessing the dye. To address this, we used a 60-mer protein nanocage, TIP60, with a densely pyrene-modified interior surface. The modification did not induce protein denaturation, as monitored by small-angle X-ray scattering, and greatly increased the aqueous solubility of a hydrophobic solvatochromic dye, Nile Red (NR), while preserving its fluorescence. The NR-loaded solution appeared blue, reflecting the polar environment surrounding NR. Cryogenic electron microscopy suggested that the pyrenes interacted with each other to form a binding site for NR. This interaction also contributed to thermostability of TIP60 (65 °C to 86 °C) and stability against sodium dodecyl sulfate, as observed by electrophoresis experiments. When brushed onto plain copy paper, the NR-loaded nanocage appeared bluish-purple and shifted reversibly to purplish red upon heating, returning on cooling—presumably via nanocage dissociation and reassembly. The color change was also sensitive to humidity. We term this material “misteINK”, a protein-based ink with reversible temperature- and humidity-dependent color changes. These findings demonstrate that a single-step interior modification enables the rational design of protein materials for tuning dye photophysics, providing a powerful strategy for designing protein-based functional materials.

  • Design, structures, and applications of an icosahedral artificial protein nanocage, TIP60

    Kawakami N., Miyamoto K., Arai R.

    Chemical Communications 61 ( 53 ) 9584 - 9595 2025年05月

    ISSN  13597345

     概要を見る

    Many protein nanocages are polyhedral shapes with icosahedral symmetry owing to the geometric constraints defined by Euler's polyhedral theorem, which suggests that pentagonal faces play a key role in creating uniform structures. This principle has inspired a range of design approaches to create artificial protein nanocages. For example, this review mainly shows design, structures, and applications of TIP60, an artificially designed icosahedral protein nanocage produced through a fusion protein approach incorporating pentameric structures. Protein engineering techniques, such as chemical modifications and mutation strategies for TIP60, have successfully added properties useful for various applications, including drug delivery, nanoreactors, and hydrogels. Recent advances in computational protein design can enable precise structural customization. Therefore, the integration of rational design with targeted modifications is likely to become a powerful approach for developing functionalized proteins.

  • Fusion then fission: splitting and reassembly of an artificial fusion-protein nanocage

    Ohara N., Kawakami N., Arai R., Adachi N., Ikeda A., Senda T., Miyamoto K.

    Chemical Communications 60 ( 34 ) 4605 - 4608 2024年04月

    ISSN  13597345

     概要を見る

    A split-protein system is a simple approach to introduce new termini which are useful as modification sites in protein engineering, but has been adapted mainly for monomeric proteins. Here we demonstrate the design of split subunits of the 60-mer artificial fusion-protein nanocage TIP60. The subunit fragments successfully reformed the cage structure in the same manner as prior to splitting. One of the newly introduced terminals at the interior surface can be modified using a tag peptide and green fluorescent protein. Therefore, the termini could serve as a versatile modification site for incorporating a wide variety of functional peptides and proteins.

  • Thermally Reversible Gel-Sol Transition of Hydrogels via Dissociation and Association of an Artificial Protein Nanocage

    Nasu E., Kawakami N., Takamura S., Hotta A., Arai R., Miyamoto K.

    Biomacromolecules 25 ( 4 ) 2358 - 2366 2024年04月

    ISSN  15257797

     概要を見る

    Oligomeric protein nanocages often disassemble into their subunits and reassemble by external stimuli. Thus, using these nanocages as cross-linkers for hydrogel network structures is a promising approach to allow hydrogels to undergo stimuli-responsive gel-sol transitions or self-healing. Here, we report hydrogels that show a reversible gel-sol transition resulting from the heat-induced dissociation and reassociation of protein nanocages. The hydrogel contained the 60-mer artificial protein nanocage, TIP60, as a supramolecular cross-linker for polyethylene glycol network structures. The hydrogel showed a gel-to-sol transition upon heating at a temperature above the melting point of TIP60 and immediately returned to a gel state upon cooling to room temperature. During the heating and cooling treatment of the hydrogel, small-angle X-ray scattering analysis suggested the dissociation and reassociation of TIP60. Furthermore, we demonstrated redox-responsive cargo release from TIP60 in the hydrogel. These results showed the potential of TIP60 as a component of multi-stimuli-responsive hydrogels.

  • Column-free purification of an artificial protein nanocage, TIP60

    Nasu E., Kawakami N., Ohara N., Hayashi K., Miyamoto K.

    Protein Expression and Purification (Protein Expression and Purification)  205 2023年05月

    ISSN  10465928

     概要を見る

    Protein nanocages, which have inner cavities and surface pores, are attractive materials for various applications, such as in catalysts and medicine. Recently, we produced an artificial protein nanocage, TIP60, and demonstrated its potential as a stimuli-responsive nanocarrier. In the present study, we report a simple purification method for TIP60 that can replace time-consuming and costly affinity chromatography purification. TIP60, which has an anionic surface charge, aggregated at mildly acidic pH and redissolved at neutral pH, maintaining its cage structure. This pH-responsive reversible precipitation allowed us to purify TIP60 from soluble fractions of the E. coli cell lysate by controlling the pH. Compared with conventional Ni-NTA column purification, the pH-responsive precipitation method provided purified TIP60 with similar purity (∼80%) and higher yield. This precipitation purification method should facilitate the large-scale investigation and practical use of TIP60 nanocages.

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KOARA(リポジトリ)収録論文等 【 表示 / 非表示

競争的研究費の研究課題 【 表示 / 非表示

  • 実験室進化で生じた大腸菌変異株の鉄輸送体に着目した進化プロセスの検証

    2022年04月
    -
    2024年03月

    補助金,  研究代表者

  • 大腸菌実験室進化を通じた生物の元素利用に対する進化的可塑性の検討

    2021年07月
    -
    2024年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 川上 了史, 挑戦的研究(萌芽), 補助金,  研究代表者

  • 人工球状タンパク質超分子を用いたナノスケール相分離の実現とその応用

    2018年04月
    -
    2021年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 川上 了史, 基盤研究(C), 補助金,  研究代表者

受賞 【 表示 / 非表示

  • 第8回新化学技術研究奨励賞 新化学技術推進協会

    2019年06月

    受賞区分: 出版社・新聞社・財団等の賞

  • 日本蛋白質科学会若手奨励賞優秀賞

    2017年06月

 

担当授業科目 【 表示 / 非表示

  • 生物学序論

    2026年度

  • 学外実習第2

    2026年度

  • 基礎生命実験

    2026年度

  • 生体反応化学(生命化学第4)

    2026年度

  • 学外実習第1

    2026年度

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担当経験のある授業科目 【 表示 / 非表示

  • 生体反応論第2

    慶應義塾

    2017年04月
    -
    継続中

    春学期