研究者業績

戸谷 希一郎

トタニ キイチロウ  (Kiichiro Totani)

基本情報

所属
成蹊大学 理工学部 理工学科 教授
学位
博士(工学)(慶應義塾大学)

J-GLOBAL ID
201401094820177323
researchmap会員ID
B000243010

外部リンク

委員歴

 4

論文

 92
  • Taiki Kuribara, Mitsuaki Hirose, Naoya Tajima, Kiichiro Totani
    Trends in Glycoscience and Glycotechnology 36(213) E94-E103 2024年9月25日  
  • Mitsuaki Hirose, Yuto Nakamachi, Hasumi Muto, Akito Taira, Shinji Tanaka, Taiki Kuribara, Kiichiro Totani
    Carbohydrate Research 2024年6月  
  • Ruchio Usui, Akira Koizumi, Kyohei Nitta, Taiki Kuribara, Kiichiro Totani
    The Journal of Organic Chemistry 2023年10月20日  
  • Shigesaburo Ogawa, Katsuya Iuchi, Taro Tsubomura, Kiichiro Totani, Setsuko Hara
    Journal of oleo science 71(10) 1531-1540 2022年9月30日  
    In molecular biology research, a vitamin E (VE) vehicle (VE dissolved in organic solvent) is often added to water media without a stabilizer. However, the detailed behavior of VE colloids in water media is unclear. In this study, we reveal that VE nanoemulsion readily forms in water-based media through the existing protocol. The colloid size was changed from 39 nm to the submicron scale by adjusting the initial concentration of the VE solution and adding a buffer. The radical scavenging effect of the dispersed nanosized VEs is comparable to that of the water-soluble antioxidant Trolox, providing excellent antioxidant performance in colloid form. The cytoprotection effect of the VE colloids under a lipid oxidation condition largely depends on the size of the nanodispersion. Smaller dispersed particles are more efficient radical scavengers than larger particles for a constant VE amount owing to sophisticated uptake behavior of cell. This unveiled fundamental knowledge pave the way for a preparative protocol of stabilizer-free VE vehicles, which are expected to become widely used in molecular biology research.
  • Taiki Kuribara, Kiichiro Totani
    Biology 11(2) 199-199 2022年1月27日  
    Glycoprotein folding plays a critical role in sorting glycoprotein secretion and degradation in the endoplasmic reticulum (ER). Furthermore, relationships between glycoprotein folding and several diseases, such as type 2 diabetes and various neurodegenerative disorders, are indicated. Patients’ cells with type 2 diabetes, and various neurodegenerative disorders induce ER stress, against which the cells utilize the unfolded protein response for protection. However, in some cases, chronic and/or massive ER stress causes critical damage to cells, leading to the onset of ER stress-related diseases, which are categorized into misfolding diseases. Accumulation of misfolded proteins may be a cause of ER stress, in this respect, perturbation of oligomannose-type glycan processing in the ER may occur. A great number of studies indicate the relationships between ER stress and misfolding diseases, while little evidence has been reported on the connection between oligomannose-type glycan processing and misfolding diseases. In this review, we summarize alteration of oligomannose-type glycan processing in several ER stress-related diseases, especially misfolding diseases and show the possibility of these alteration of oligomannose-type glycan processing as indicators of diseases.

MISC

 36

書籍等出版物

 6

講演・口頭発表等

 127

担当経験のある科目(授業)

 14

共同研究・競争的資金等の研究課題

 9