Basic Information

Email Address

• Email Address

  sasaki.yuki.8fkyoto-u.ac.jp

Professional Memberships

• 日本乳酸菌学会
• 日本農芸化学会
• 日本応用糖質科学会

Academic Degree

• 25 Mar. 2019

  鹿児島大学修士(農学)
• 25 Mar. 2022

  鹿児島大学博士(農学)

Academic Resume (Graduate Schools)

• 鹿児島大学, 大学院農学研究科生物資源化学専攻修士課程, 修了

Academic Resume (Undergraduate School/Majors)

• 鹿児島大学, 農学部生物資源化学科, 単位修得退学

Research History

• From Apr. 2025, To Present

  京都大学大学院, 生命科学研究科, 助教
• From Apr. 2022, To Mar. 2025

  京都大学大学院, 生命科学研究科, 日本学術振興会 特別研究員(PD)
• From Apr. 2019, To Mar. 2022

  鹿児島大学大学院, 連合農学研究科, 日本学術振興会 特別研究員(DC1)

ID,URL

• J-Global ID

  202501014637816113

• Researcher number

  61012042

researchmap URL

• https://researchmap.jp/yuki-sasaki

Research

Research Interests

• 糖質分解酵素
• アラビノガラクタン-プロテイン
• 植物多糖
• アラビアガム
• ビフィズス菌
• 腸内細菌
• 共生

Research Areas

• Life sciences, Food sciences
• Life sciences, Applied biochemistry
• Life sciences, Applied microbiology

Papers

• Adaptations of gummivorous primate gut-associated bifidobacteria to type-II arabinogalactan utilisation

  Yuki Sasaki; Tomoya Kozakai; Moe Inoue; Mikiyasu Sakanaka; Toshihiko Katoh; Hiroki Kaneko; Hiroo Imai; Toshitaka Odamaki; Kiyotaka Fujita; Takane Katayama

  The ISME Journal, 19 Aug. 2026, Peer-reviewed, Lead author, Corresponding author

  
• Structural analysis of gum arabic side chains from Acacia seyal released by bifidobacterial β-arabino-oligosaccharide 3-O-β-L-arabinopyranosyl-α-L-arabinofuranosidase

  Yuki Sasaki; Ayako Matsuo; Mimika Hashiguchi; Kanoko Fujimura; Hiroyuki Koshino; Katsunori Tanaka; Yukishige Ito; Kanefumi Kitahara; Akihiro Ishiwata; Kiyotaka Fujita

  Carbohydrate Polymers, 01 Feb. 2025, Peer-reviewed, Lead author

  
• An improved temperature-sensitive shuttle vector system for scarless gene deletion in human-gut-associated Bifidobacterium species.

  Tomoya Kozakai; Aruto Nakajima; Keisuke Miyazawa; Yuki Sasaki; Toshitaka Odamaki; Toshihiko Katoh; Takeshi Fukuma; Jin-zhong Xiao; Tohru Suzuki; Takane Katayama; Mikiyasu Sakanaka

  iScience, Oct. 2024, Peer-reviewed

  
• Assimilation of arabinogalactan side chains with novel 3-O-β-L-arabinopyranosyl-α-L-arabinofuranosidase in Bifidobacterium pseudocatenulatum.

  Yuki Sasaki; Makoto Yanagita; Mimika Hashiguchi; Ayako Horigome; Jin-Zhong Xiao; Toshitaka Odamaki; Kanefumi Kitahara; Kiyotaka Fujita

  Microbiome Research Reports, Apr. 2023, Peer-reviewed, Lead author

  
• Mechanism of Cooperative Degradation of Gum Arabic Arabinogalactan Protein by Bifidobacterium longum Surface Enzymes

  Yuki Sasaki; Masahiro Komeno; Akihiro Ishiwata; Ayako Horigome; Toshitaka Odamaki; Jin-Zhong Xiao; Katsunori Tanaka; Yukishige Ito; Kanefumi Kitahara; Hisashi Ashida; Kiyotaka Fujita

  Applied and Environmental Microbiology, 22 Mar. 2022, Peer-reviewed, Lead author

  
• Two α-l-arabinofuranosidases from Bifidobacterium longum subsp. longum are involved in arabinoxylan utilization

  Masahiro Komeno; Yuki Yoshihara; Junya Kawasaki; Wataru Nabeshima; Koshi Maeda; Yuki Sasaki; Kiyotaka Fujita; Hisashi Ashida

  Applied Microbiology and Biotechnology, 02 Mar. 2022, Peer-reviewed

  
• Characterization of a GH36 α-D-galactosidase associated with assimilation of gum arabic in Bifidobacterium longum subsp. longum JCM7052.

  Yuki Sasaki; Yumi Uchimura; Kanefumi Kitahara; Kiyotaka Fujita

  Journal of Applied Glycoscience, 11 Jun. 2021, Peer-reviewed, Lead author

  
• Novel 3-O-α-D-galactosyl-α-L-arabinofuranosidase for the assimilation of gum arabic arabinogalactan protein in Bifidobacterium longum subsp. longum.

  Yuki Sasaki; Ayako Horigome; Toshitaka Odamaki; Jin-Zhong Xiao; Akihiro Ishiwata; Yukishige Ito; Kanefumi Kitahara; Kiyotaka Fujita

  Applied and Environmental Microbiology, 27 Apr. 2021, Peer-reviewed, Lead author

  
• Degradation of plant arabinogalactan proteins by intestinal bacteria: characteristics and functions of the enzymes involved

  Kiyotaka Fujita; Yuki Sasaki; Kanefumi Kitahara

  Applied Microbiology and Biotechnology, 05 Aug. 2019, Peer-reviewed, Invited

  
• Characterization of a GH36 β-L-arabinopyranosidase in Bifidobacterium adolescentis.

  Yuki Sasaki; Nami Togo; Kanefumi Kitahara; Kiyotaka Fujita

  Journal of Applied Glycoscience, 20 May 2018, Peer-reviewed, Lead author

  

Misc.

• アカシアセヤル及びアサガオ由来AGPを構成する長鎖β-アラビノオリゴ糖鎖の構造解析

  藤村花乃子; 橋口実々花; 佐々木優紀; 石渡明弘; 田中克典; 田中克典; 北原兼文; 北原兼文; 藤田清貴; 藤田清貴

  日本応用糖質科学会大会・応用糖質科学シンポジウム講演要旨集, 2025

  
• 腸内細菌によるアラビノガラクタン-プロテインの糖鎖分解に関わる酵素群の役割

  藤田 清貴; 佐々木 優紀; 北原兼文

  バイオサイエンスとインダストリー, Nov. 2022

  
• [Review] Assimilative Mechanism of Gum Arabic on Bifidobacteria

  Yuki Sasaki; Kanefumi Kitahara; Kiyotaka Fujita

  Bulletin of Applied Glycoscience, 20 May 2022, Lead author

  

Presentations

• ガム食性霊長類の腸内に共生するビフィズス菌のガム由来糖質利用機構

  佐々木 優紀

  第15回マーモセット研究会大会, 21 Jan. 2026, Invited

  
• 霊長類由来ビフィズス菌に見られる多様なアラビノガラクタン利用戦略

  佐々木 優紀

  日本応用糖質科学会2024年度大会 第 12 回応用糖質フレッシュシンポジウム, Sep. 2024, Invited

  
• ビフィズス菌のアラビアガム資化性の鍵を握る3-O-α-D-galactopyranosyl-α-L-arabinofuranosidaseの機能解析

  佐々木 優紀

  日本応用糖質科学会2021年度大会 応用糖質科学シンポジウム, Sep. 2021, Invited

  

Industrial Property Rights

• 特開2025-25052, 特願2023-129492, セヤル種アラビアガム修飾糖分解酵素、飲食品組成物、ビフィズス菌増殖促進剤、オリゴ糖の製造方法、ビフィズス菌増殖促進方法、セヤル種アラビアガム資化菌の検出用キット及びセヤル種アラビアガム資化菌の検出方法

  藤田清貴; 佐々木優紀; 石渡明弘

  
• 特願2024-179545, プロバイオティクス及びこれを含む組成物

  吉田 圭佑; 小田巻 俊孝; 佐々木 優紀; 片山 高嶺

  

Awards

• 24 Mar. 2022

  蟹江松雄賞 (学生部門)(鹿児島大学)
• 25 Mar. 2022

  鹿児島大学稲盛賞
• 20 Jun. 2019

  Young Scientist Award 2nd(IPC2019)
• 10 Jul. 2021

  優秀発表賞(日本乳酸菌学会)

Media Coverage

• ビフィズス菌を増やす酵素｣鹿児島大学研究グループ発見、｢食物繊維アラビアガム｣で実験

  南日本新聞, 14 Apr. 2021, Paper

  

External funds: Kakenhi

• Functional Characterization and Physiological function of Novel Methylated Uronic Acid-Degrading Enzymes from Symbiotic Bacteria

  Grant-in-Aid for Research Activity Start-up

  0601:Agricultural chemistry and related fields

  Kyoto University

  佐々木 優紀

  From 31 Jul. 2025, To 31 Mar. 2027, Granted

  共生細菌;植物細胞壁;酸性多糖;ウロン酸;CAZy

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25K23624/