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Updated: Aug 10, 2026

An Orthotopic Murine Model of Human Prostate Cancer Metastasis
Published on: September 19, 2013
[Stable suppression of beta-catenin expression in prostate cancer cell line by retrovirus mediated RNAi]
Zheng Hu1, Fang Cai, Li-Juan Cheng
1National Laboratory of Medical Genetics, Central South University, Changsha 410078, China.
Objective:
To set up a prostate cancer cell line in which beta-catenin expression is stably suppressed and to investigate the role of Wnt/beta-catenin signaling pathway in prostate tumorgenesis.
Methods:
We select 3 sites in the complete coden sequence region of beta-catenin gene as the RNAi targets, ligated the annealed double pre-DNA strands into the retroviral vectors pSUPER-retro and transfected them into the packaging cells PA317, and then collected supernatant with retrovirus to infect DU145. After selection by puromycin and culture expansion, the stable cell clones were attained. Expression of the 2 target genes of Wnt/beta-catenin signaling pathway cyclinD1 and c-myc, was detected in the beta-catenin RNAi cells by Western blot. The effect of suppressing beta-catenin by RNAi on cell proliferation was quantified by methylthiazoletetrazolium (MTT) assay.
Results:
Western blotting and RT-PCR showed that the expression level of beta-catenin in the 2 stable cell clones apparently decreased. CyclinD1 and c-myc expression decreased in the beta-catenin RNAi cells. MTT showed that the cell number of beta-catenin expression suppression cell clones decreased significantly (P < 0. 05), suggesting the cell proliferation was prevented.
Conclusion:
The beta-catenin gene stable suppression cell line was successfully established.
Insights
Researchers successfully created a prostate cancer cell line with suppressed beta-catenin. This suppression inhibited cell proliferation, offering insights into the Wnt/beta-catenin pathway
Area of Science:
- Molecular biology
- Cancer research
- Genetics
Context:
- Prostate cancer is a significant health concern.
- The Wnt/beta-catenin signaling pathway is implicated in various cancers.
- Understanding this pathway's role in tumorgenesis is crucial.
Purpose:
- To establish a prostate cancer cell line with stably suppressed beta-catenin expression.
- To investigate the role of the Wnt/beta-catenin signaling pathway in prostate cancer development.
Summary:
- Beta-catenin gene suppression was achieved using RNA interference (RNAi) in DU145 prostate cancer cells.
- Western blot and RT-PCR confirmed reduced beta-catenin, cyclinD1, and c-myc expression.
- Methylthiazaletrazolium (MTT) assays demonstrated significantly decreased cell proliferation in suppressed cell lines.
Impact:
- Successfully established a beta-catenin suppressed prostate cancer cell line.
- Provides a valuable tool for further research into Wnt/beta-catenin signaling in prostate cancer.
- Demonstrates that suppressing beta-catenin inhibits prostate cancer cell proliferation.
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