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Lithium inhibits tumorigenic potential of PDA cells through targeting hedgehog-GLI signaling pathway

Zhonglu Peng1, Zhengyu Ji, Fang Mei

  • 1State Key Laboratory of Natural Medicines and School of Life Science and Technology, China Pharmaceutical University, Nanjing, China.

Plos One
|April 30, 2013
PubMed

Insights

Lithium inhibits pancreatic ductal adenocarcinoma (PDA) cell growth and proliferation by targeting the GLI1 protein in the hedgehog signaling pathway. It also enhances gemcitabine

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Pancreatic ductal adenocarcinoma (PDA) is driven by the hedgehog signaling pathway.
  • GLI1 is a key downstream mediator of hedgehog signaling.
  • Lithium inhibits glycogen synthase kinase 3β (GSK3β), affecting GLI1 degradation.

Purpose of the Study:

  • To investigate the effect of lithium on PDA cells.
  • To elucidate the role of GLI1 in lithium's anti-PDA activity.
  • To evaluate lithium's potential as a PDA therapeutic strategy.

Main Methods:

  • Cell proliferation assays
  • Cell-cycle analysis
  • Apoptosis assays
  • Tumorigenic potential assessment
  • Western blotting to assess GLI1 expression and activity

Main Results:

  • Lithium inhibited PDA cell proliferation and G1/S cell-cycle progression.
  • Lithium induced apoptosis and suppressed tumorigenic potential in PDA cells.
  • Lithium reduced GLI1 expression and activity, confirming pathway inhibition.
  • Lithium demonstrated synergistic effects with gemcitabine.

Conclusions:

  • Lithium exhibits anti-cancer properties against PDA by targeting GLI1.
  • Lithium down-regulates GLI1, inhibiting PDA cell growth and survival.
  • Lithium offers a potential therapeutic strategy for PDA, possibly in combination with chemotherapy.

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