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Updated: May 31, 2026
An Orthotopic Bladder Tumor Model and the Evaluation of Intravesical saRNA Treatment
Published on: July 28, 2012
shRNA targeting PLCε inhibits bladder cancer cell growth in vitro and in vivo
HongLin Cheng1, ChunLi Luo, XiaoHou Wu
1Department of Urological Surgery, First Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China.
Objectives:
To investigate the role of phospholipase Cε (PLCε) by silencing PLCε with short hairpin RNA (shRNA) in human bladder cancer cells BIU-87 in vitro and in vivo.
Methods:
A PLCε shRNA expression vector was transfected into BIU-87 cells, and the expression of PLCε protein was detected by Western blotting. Cell proliferation was determined using the MTT assay, and the cell cycle was detected using flow cytometry. A tumor xenograft experiment was established to evaluate the tumor growth under the condition of PLCε knockdown, and the expression of PLCε, proliferating cell nuclear antigen, and cyclin D1 were detected by Western blotting or immunohistrochemistry.
Results:
PLCε shRNA reduced the protein level of PLCε, leading to marked proliferation inhibition and significant cell cycle arrest. Furthermore, PLCε shRNA reduced the tumor xenograft growth implanted with BIU-87 cells. The protein expression of PLCε, proliferating cell nuclear antigen, and cyclin D1 were downregulated in the bladder tumor xenograft.
Conclusions:
The knockdown of PLCε by shRNA could inhibit bladder tumor growth and might be an alternative approach for human bladder cancer therapy.
Insights
Silencing phospholipase Cε (PLCε) with short hairpin RNA (shRNA) effectively inhibited human bladder cancer cell growth and tumor xenograft development. This suggests PLCε is a potential therapeutic target for bladder cancer.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Phospholipase Cε (PLCε) is implicated in cellular signaling pathways.
- Its specific role in human bladder cancer progression requires further elucidation.
Purpose of the Study:
- To investigate the function of PLCε in human bladder cancer.
- To evaluate the therapeutic potential of targeting PLCε using short hairpin RNA (shRNA).
Main Methods:
- PLCε was silenced using shRNA in BIU-87 human bladder cancer cells in vitro and in vivo.
- Cell proliferation, cell cycle, and tumor xenograft growth were assessed.
- Protein expression of PLCε, proliferating cell nuclear antigen, and cyclin D1 was analyzed.
Main Results:
- PLCε shRNA significantly reduced PLCε protein levels.
- Knockdown of PLCε inhibited cell proliferation and induced cell cycle arrest.
- Tumor xenograft growth was suppressed, with decreased expression of PLCε, PCNA, and cyclin D1.
Conclusions:
- PLCε knockdown via shRNA effectively inhibits human bladder cancer growth.
- Targeting PLCε represents a promising therapeutic strategy for bladder cancer.
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