Role for Daple in non-canonical Wnt signaling during gastric cancer invasion and metastasis

Hosne Ara, Maki Takagishi, Atsushi Enomoto, Masato Asai, Kaori Ushida, Naoya Asai, Yoshie Shimoyama, Kozo Kaibuchi, Yasuhiro Kodera, Masahide Takahashi

研究成果: Article査読

29 被引用数 (Scopus)

抄録

In gastric cancer, the non-canonical Wnt signaling pathway is activated by Wnt5a, which has a critical role in disease outcome. Previous studies have shown that Wnt5a mediates the expression of the extracellular matrix protein laminin γ2 through Rac and JNK activation to promote gastric cancer progression. However, the mechanism of this regulatory pathway has not been completely addressed. The scaffold protein Dvl is a major component of the Wnt signaling pathway. Here, we show that Dvl-associating protein with a high frequency of leucine residues (Daple) mediates Wnt5a-induced laminin γ2 expression. Immunohistochemical analysis showed marked expression of Daple in advanced clinical stages of gastric cancer, where it highly correlated with Wnt5a/b and laminin γ2 expression, the depth of wall invasion, and the frequency of lymph node metastasis. In cultured cancer cells, Daple depletion led to the suppression of Wnt5a-induced Rac and JNK activation, laminin γ2 expression, and cell migration and invasion. Accordingly, Daple depletion also suppressed liver metastasis in a mouse xenograft model of gastric cancer. These results suggest that the non-canonical Wnt signaling pathway contributes to gastric cancer progression at least in part via Daple, which provides a new therapeutic opportunity for the treatment of the disease.

本文言語English
ページ(範囲)133-139
ページ数7
ジャーナルCancer science
107
2
DOI
出版ステータスPublished - 01-02-2016
外部発表はい

All Science Journal Classification (ASJC) codes

  • 腫瘍学
  • 癌研究

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