論文

査読有り 招待有り 筆頭著者
2021年4月29日

Pharmacological Inhibition of miR-130 Family Suppresses Bladder Tumor Growth by Targeting Various Oncogenic Pathways via PTPN1

International Journal of Molecular Sciences
  • Yuya Monoe
  • Kentaro Jingushi
  • Akitaka Kawase
  • Takayuki Hirono
  • Ryo Hirose
  • Yoshino Nakatsuji
  • Kaori Kitae
  • Yuko Ueda
  • Hiroaki Hase
  • Yuichi Abe
  • Jun Adachi
  • Takeshi Tomonaga
  • Kazutake Tsujikawa
  • 全て表示

22
9
開始ページ
4751
終了ページ
4751
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.3390/ijms22094751
出版者・発行元
MDPI AG

Previously, we have revealed that the miR-130 family (miR-130b, miR-301a, and miR-301b) functions as an oncomiR in bladder cancer. The pharmacological inhibition of the miR-130 family molecules by the seed-targeting strategy with an 8-mer tiny locked nucleic acid (LNA) inhibits the growth, migration, and invasion of bladder cancer cells by repressing stress fiber formation. Here, we searched for a functionally advanced target sequence with LNA for the miR-130 family with low cytotoxicity and found LNA #9 (A(L)^i^i^A(L)^T(L)^T(L)^G(L)^5(L)^A(L)^5(L)^T(L)^G) as a candidate LNA. LNA #9 inhibited cell growth in vitro and in an in vivo orthotopic bladder cancer model. Proteome-wide tyrosine phosphorylation analysis suggested that the miR-130 family upregulates a wide range of receptor tyrosine kinases (RTKs) signaling via the expression of phosphorylated Src (pSrcTyr416). SILAC-based proteome analysis and a luciferase assay identified protein tyrosine phosphatase non-receptor type 1 (PTPN1), which is implicated as a negative regulator of multiple signaling pathways downstream of RTKs as a target gene of the miR-130 family. The miR-130-targeted LNA increased and decreased PTPN1 and pSrcTyr416 expressions, respectively. PTPN1 knockdown led to increased tumor properties (cell growth, invasion, and migration) and increased pSrcTyr416 expression in bladder cancer cells, suggesting that the miR-130 family upregulates multiple RTK signaling by targeting PTPN1 and subsequent Src activation in bladder cancer. Thus, our newly designed miR-130 family targeting LNA could be a promising nucleic acid therapeutic agent for bladder cancer.

リンク情報
DOI
https://doi.org/10.3390/ijms22094751
URL
https://www.mdpi.com/1422-0067/22/9/4751/pdf
ID情報
  • DOI : 10.3390/ijms22094751
  • eISSN : 1422-0067

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