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Skp2-RNAi suppresses proliferation and migration of gallbladder carcinoma cells by enhancing p27 expression

Bin Zhang1, Lin-Hua Ji, Wei Liu

  • 1Department of General Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China.

World Journal of Gastroenterology
|August 16, 2013
PubMed
Abstract

Insights

Silencing S-phase kinase-associated protein-2 (Skp2) using RNA interference inhibited gallbladder carcinoma cell proliferation and migration. This targeted approach also reduced tumor growth in vivo by enhancing p27 protein expression.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Gallbladder carcinoma is an aggressive malignancy with limited treatment options.
  • S-phase kinase-associated protein-2 (Skp2) is implicated in various cancers, potentially driving tumor progression.
  • Understanding Skp2's role is crucial for developing targeted therapies.

Purpose of the Study:

  • To investigate the role of Skp2 in gallbladder carcinoma.
  • To determine if Skp2 depletion via RNA interference (RNAi) can inhibit cancer cell proliferation and migration.

Main Methods:

  • Lentiviral vectors were used to deliver Skp2-RNAi into gallbladder carcinoma cells (GBC-SD).
  • In vitro assays assessed proliferation, colony formation, migration, invasion, and cell cycle.
  • Real-time PCR and Western blotting analyzed Skp2 and p27 expression.
  • In vivo tumorigenicity experiments in nude mice evaluated Skp2-RNAi's effect on tumor growth.

Main Results:

  • Skp2-RNAi effectively reduced Skp2 expression in GBC-SD cells.
  • Downregulation of Skp2 led to increased p27 protein levels, without altering p27 mRNA.
  • Skp2 depletion inhibited cell proliferation, migration, and invasion in vitro.
  • Tumor weights were significantly reduced in vivo following Skp2 suppression.

Conclusions:

  • Skp2-RNAi successfully inhibited Skp2 expression in gallbladder carcinoma cells.
  • Silencing Skp2 suppressed proliferation, migration, and invasiveness.
  • These effects are mediated by enhanced p27 protein expression, suggesting a therapeutic target.
Keywords:
Cell cycleGallbladder carcinomaGene therapyS-phase kinase-associated protein-2p27

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