サトウ　アツシ   佐藤　淳    所属   応用生物学部 応用生物学科    職種   教授
言語種別	英語
発行・発表の年月	2021/11
形態種別	学術論文
査読	査読あり
標題	BST1 regulates nicotinamide riboside metabolismvia its glycohydrolase and base-exchange activities
執筆形態	共著
掲載誌名	Nature Communications
掲載区分	国外
出版社・発行元	Nature
巻・号・頁	12,pp.6767
著者・共著者	Keisuke Yaku, Sailesh Palikhe, Hironori Izumi, Tomoyuki Yoshida, Keisuke Hikosaka, Faisal Hayat, Mariam Karim, Tooba Iqbal, Yasuhito Nitta, Atsushi Sato, Marie E Migaud, Katsuhiko Ishihara, Hisashi Mori, Takashi Nakagawa
概要	Nicotinamide riboside (NR) is one of the orally bioavailable NAD+ precursors and has been demonstrated to exhibit beneficial effects against aging and aging-associated diseases. However, the metabolic pathway of NR in vivo is not yet fully understood. Here, we demonstrate that orally administered NR increases NAD+ level via two different pathways. In the early phase, NR was directly absorbed and contributed to NAD+ generation through the NR salvage pathway, while in the late phase, NR was hydrolyzed to nicotinamide (NAM) by bone marrow stromal cell antigen 1 (BST1), and was further metabolized by the gut microbiota to nicotinic acid, contributing to generate NAD+ through the Preiss-Handler pathway. Furthermore, we report BST1 has a base-exchange activity against both NR and nicotinic acid riboside (NAR) to generate NAR and NR, respectively, connecting amidated and deamidated pathways. Thus, we conclude that BST1 plays a dual role as glycohydrolase and base-exchange enzyme during oral NR supplementation.
外部リンクURL	https://www.nature.com/articles/s41467-021-27080-3