論文

査読有り
2018年3月

Molecular mechanisms of Streptococcus pneumoniae-targeted autophagy via pneumolysin, Golgi-resident Rab41, and Nedd4-1 mediated K63-linked ubiquitination

Cellular microbiology
  • Ogawa, Michinaga
  • Matsuda, Ryuta
  • Takada, Naoki
  • Tomokiyo, Mikado
  • Yamamoto, Shouji
  • Shizukusihi, Sayaka
  • Yamaji, Toshiyuki
  • Yoshikawa, Yuko
  • Yoshida, Mitsutaka
  • Tanida, Isei
  • Koike, Masato
  • Murai, Miyo
  • Morita, Hidetoshi
  • Takeyama, Haruko
  • Ryo, Akihide
  • Guan, Jun-Lin
  • Yamamoto, Masahiro
  • Inoue, Jun-Ichiro
  • Yanagawa, Toru
  • Fukuda, Mitsunori
  • Kawabe, Hiroshi
  • Ohnishi, Makoto
  • 全て表示

20
8
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/cmi.12846
出版者・発行元
WILEY

Streptococcus pneumoniae is the most common causative agent of community-acquired pneumonia and can penetrate epithelial barriers to enter the bloodstream and brain. We investigated intracellular fates of S. pneumoniae and found that the pathogen is entrapped by selective autophagy in pneumolysin- and ubiquitin-p62-LC3 cargo-dependent manners. Importantly, following induction of autophagy, Rab41 was relocated from the Golgi apparatus to S. pneumoniae-containing autophagic vesicles (PcAV), which were only formed in the presence of Rab41-positive intact Golgi apparatuses. Moreover, subsequent localization and regulation of K48- and K63-linked polyubiquitin chains in and on PcAV were clearly distinguishable from each other. Finally, we found that E3 ligase Nedd4-1 was recruited to PcAV and played a pivotal role in K63-linked polyubiquitin chain (K63Ub) generation on PcAV, promotion of PcAV formation, and elimination of intracellular S. pneumoniae. These findings suggest that Nedd4-1-mediated K63Ub deposition on PcAV acts as a scaffold for PcAV biogenesis and efficient elimination of host cell-invaded pneumococci.

リンク情報
DOI
https://doi.org/10.1111/cmi.12846
ID情報
  • DOI : 10.1111/cmi.12846
  • ISSN : 1462-5822

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