A novel circular RNA circENTPD7 contributes to glioblastoma progression by targeting ROS1
Fei Zhu1, Cheng Cheng1, Hong Qin1
1Department of Neuro Surgery, The Affiliated Hospital of Yangzhou University, No. 45, Taizhou Road, Yangzhou, Jiangsu China.
Background:
Circular RNAs (circRNAs) are identified to play an important role in many human cancers, such as glioblastoma. However, the potential mechanisms underlying the relationship between circRNAs and glioblastoma pathogenesis are still elusive. This study is designed to investigate the role of circRNAs in glioblastoma progression.
Methods:
The present study is designed to investigate the mechanism by which circRNAs involves in glioblastoma pathogenesis. By using circRNAs microarray, we detected the dysregulated circRNAs and identified an up-regulated circRNA, circENTPD7 in glioblastoma tissues. Cell proliferation was measured using a CCK-8 assay. Cell clone formation ability was assessed with a clone formation test. We used the bioinformatics website to predict circRNA-miRNA and miRNA-mRNA interactions. CircRNA-miRNA interaction was confirmed by dual-luciferase reporter assays and RNA-RNA pulldown assay.
Results:
circENTPD7 (hsa_circ_0019421) was upregulated in glioblastoma tissues. Kaplan-Meier survival analysis indicated that glioblastoma patients had a poor overall survival when circENTPD7 expression levels were high. Knockdown of circENTPD7 inhibited the motility and proliferation of glioblastoma cells. Moreover, we demonstrated that circENTPD7 acted as a sponge of miR-101-3p to regulate the expression of ROS1 further promoted the proliferation and motility of glioblastoma cells.
Conclusions:
Taken together, these findings indicate that circRNA circENTPD7 promotes glioblastoma cell proliferation and motility by regulating miR-101-3p/ROS1.
Insights
Circular RNAs (circRNAs) promote glioblastoma by upregulating circENTPD7. This molecule enhances tumor cell proliferation and motility by interacting with miR-101-3p and ROS1, impacting patient survival.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Circular RNAs (circRNAs) are implicated in human cancers, including glioblastoma.
- Mechanisms linking circRNAs to glioblastoma pathogenesis remain largely unknown.
- Investigating circRNA roles is crucial for understanding glioblastoma progression.
Purpose of the Study:
- To elucidate the role of circRNAs in glioblastoma pathogenesis.
- To identify specific circRNAs involved in glioblastoma progression.
- To explore the molecular mechanisms underlying circRNA function in glioblastoma.
Main Methods:
- CircRNA microarray analysis to detect dysregulated circRNAs in glioblastoma.
- Cell proliferation assays (CCK-8) and clone formation tests to assess cellular growth.
- Bioinformatic predictions, dual-luciferase reporter assays, and RNA-RNA pulldown assays to confirm molecular interactions.
Main Results:
- circENTPD7 (hsa_circ_0019421) was significantly upregulated in glioblastoma tissues.
- High circENTPD7 expression correlated with poor overall survival in glioblastoma patients.
- Knockdown of circENTPD7 suppressed glioblastoma cell proliferation and motility.
- circENTPD7 functions as a sponge for miR-101-3p, regulating ROS1 expression and promoting tumor growth.
Conclusions:
- circRNA circENTPD7 promotes glioblastoma cell proliferation and motility.
- The mechanism involves the regulation of the miR-101-3p/ROS1 axis.
- circENTPD7 represents a potential therapeutic target for glioblastoma.
Related Concept Videos
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Small GTPases - Ras and Rho
Three regulatory proteins control their activity:
Tumor Progression
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Abnormal Proliferation


