Related Experiment Video
Updated: Apr 18, 2026
Characterization of Functionally Associated miRNAs in Glioblastoma and their Engineering into Artificial Clusters for Gene Therapy
Published on: October 4, 2019
Efficient inhibition of human glioma development by RNA interference-mediated silencing of PAK5
Xuefeng Gu1, Ce Wang2, Xuefeng Wang2
11. Institute of Neurology, Guangdong Medical College, Zhanjiang, China. ; 2. Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China.
Abstract:
Glioma is the most common type of primary intracranial tumor and is highly lethal due to its pathogenetic location, high invasiveness, and poor prognosis. Even combined surgery and chemoradiotherapy do not effectively rescue glioma patients. Molecular target therapy is considered a safe and promising therapy for glioma. The identification of a novel, effective target protein in gliomas is of great interest. We found that PAK5 was highly expressed in the tumor tissues of glioma patients and human glioma cell lines. We then used a lentivirus-delivered short hairpin RNA to stably silence PAK5 expression in glioma cells and explore its influence. The results showed that the inhibition of PAK5 reduced cell viability and delayed the cell cycle at the G0/G1 phase in the glioma cells with PAK5 high expression. In addition, silencing PAK5 expression in U87 cells weakened their colony formation ability and in vivo tumorigenesis ability. Further studies demonstrated that PAK5 inhibition led to an increase in cleaved caspase 3 and a decrease in β-catenin. In conclusion, our results suggest that the inhibition of PAK5 by RNA interference might efficiently suppress tumor development of glioma cells with PAK5 high expression. This finding provides a novel, promising therapeutic target for glioma treatment.
Insights
Targeting PAK5, a protein highly expressed in glioma, effectively suppresses tumor growth. Inhibiting PAK5 reduces glioma cell viability, delays cell cycle progression, and impairs tumor formation, offering a promising therapeutic strategy.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Glioma, a common and lethal primary brain tumor, exhibits high invasiveness and poor prognosis despite standard treatments.
- Current therapies including surgery and chemoradiotherapy have limited efficacy, highlighting the need for novel therapeutic strategies.
- Molecular targeted therapy presents a promising avenue for glioma treatment, necessitating the identification of effective molecular targets.
Purpose of the Study:
- To investigate the role of PAK5 (p21-activated kinase 5) as a potential therapeutic target in glioma.
- To evaluate the effects of PAK5 inhibition on glioma cell behavior and tumor development.
Main Methods:
- PAK5 expression was analyzed in glioma tissues and cell lines.
- Lentivirus-mediated short hairpin RNA (shRNA) was employed to stably silence PAK5 expression in glioma cells.
- Cell viability, cell cycle, colony formation, and in vivo tumorigenesis assays were performed to assess the impact of PAK5 inhibition.
Main Results:
- PAK5 was found to be highly expressed in glioma tissues and cell lines.
- Silencing PAK5 significantly reduced glioma cell viability and induced G0/G1 cell cycle arrest.
- Inhibition of PAK5 impaired colony formation, reduced in vivo tumorigenesis, increased cleaved caspase 3, and decreased β-catenin levels.
Conclusions:
- PAK5 is highly expressed in glioma and plays a crucial role in tumor development.
- RNA interference-mediated inhibition of PAK5 effectively suppresses glioma cell proliferation and tumorigenesis.
- PAK5 represents a novel and promising therapeutic target for glioma treatment.
Related Concept Videos
02:15Experimental RNAi
01:23RNA Interference
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
01:22MicroRNAs
01:22MicroRNAs
02:23Abnormal Proliferation
02:30siRNA - Small Interfering RNAs
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...