論文

査読有り 国際誌
2019年12月18日

Ganglioside GM2, highly expressed in the MIA PaCa-2 pancreatic ductal adenocarcinoma cell line, is correlated with growth, invasion, and advanced stage.

Scientific reports
  • Norihiko Sasaki
  • ,
  • Kenichi Hirabayashi
  • ,
  • Masaki Michishita
  • ,
  • Kimimasa Takahashi
  • ,
  • Fumio Hasegawa
  • ,
  • Fujiya Gomi
  • ,
  • Yoko Itakura
  • ,
  • Naoya Nakamura
  • ,
  • Masashi Toyoda
  • ,
  • Toshiyuki Ishiwata

9
1
開始ページ
19369
終了ページ
19369
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/s41598-019-55867-4

Gangliosides, a group of glycosphingolipids, are known to be cell surface markers and functional factors in several cancers. However, the association between gangliosides and pancreatic ductal adenocarcinoma (PDAC) has not been well elucidated. In this study, we examined the expression and roles of ganglioside GM2 in PDAC. GM2+ cells showed a higher growth rate than GM2- cells in the adherent condition. When GM2- and GM2+ cells were cultured three-dimensionally, almost all cells in the spheres expressed GM2, including cancer stem cell (CSC)-like cells. A glycolipid synthesis inhibitor reduced GM2 expression and TGF-β1 signaling in these CSC-like cells, presumably by inhibiting the interaction between GM2 and TGFβ RII and suppressing invasion. Furthermore, suppression of GM2 expression by MAPK inhibition also reduced TGF-β1 signaling and suppressed invasion. GM2+ cells formed larger subcutaneous tumors at a high incidence in nude mice than did GM2- cells. In PDAC cases, GM2 expression was significantly associated with younger age, larger tumor size, advanced stage and higher histological grade. These findings suggest that GM2 could be used as a novel diagnostic and therapeutic target for PDAC.

リンク情報
DOI
https://doi.org/10.1038/s41598-019-55867-4
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/31852956
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6920443