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Circular RNA contributes to gastric cancer by targeting Wnt family member 2B as a competing endogenous RNA
Wei Bai1, Zong-Liang Guo1, Jiang-Hong Guo2
1Department of Pathology, Shanxi Province Cancer Hospital/Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences/Cancer Hospital Affiliated to Shanxi Medical University, Taiyuan 030013, Shanxi Province, China.
Background:
As a non-coding RNA molecule, circular RNAs (circRNAs) have significant specificity, and existing data suggest a close relationship between them and the prognosis of patients with gastric cancer (GC). However, this mechanism has no evidence yet. This article explores the functions of hsa_circRNA_102415 in the malignant behavior and potential downstream signaling of GC cells. The chosen approach is loss of signal and functional gain.
Aim:
To investigate and analyze the relationship between hsa_circRNA_102415 and GC and explore its specific role. Results provide reference for other researchers to develop targeted treatment plans.
Methods:
The gene expression omnibus (GEO) database can be used to obtain the microarray dataset GSE83521. Data were analyzed using the GEO2R tool to identify differences in circRNAs between normal and GC samples. Quantitative real-time polymerase chain reaction was used to detect differentially expressed genes in GC tissue samples and adjacent cancer tissue samples. GC cells were transfected with small interfering-hsa_circRNA_104415 and plasmid DNA (pcDNA)-hsa_ircRNA_102415. Multiple detection methods, such as Transwell and cell counting kit 8, were used to evaluate cellular physiological activities, including cell invasion and proliferation. The relationship between Wnt family members 2B, microRNA (miR)-4529-5p, etc., including argonaute 2-RNA immunoprecipitation and luciferase reporter genes was analyzed. Rescue experiments were conducted to analyze and explore the relationship between the malignant behavior of GC cells and hsa_circRNA_102415.
Results:
GEO2R analysis confirmed that hsa_circRNA_102415 had significantly higher expression levels in disease tissues. hsa_circRNA_102415 and miR-4529-5p showed a negative correlation in disease cells, suggesting that hsa_circRNA_102415 upregulated WNT2B expression in GC cells as a competing endogenous RNA for miR-4529-5p. miR-4529-5p mimic or small interfering-WNT2B reversed the effects of pcDNA-hsa_circRNA_102415 or miR-4529-5p inhibitor on cell malignant functions.
Conclusion:
miR-4529-5p was used to successfully activate the potential of WNT2B, clarify the role of hsa_circRNA_102415 in GC cells, and provide reference for other researchers to develop targeted treatment plans.
Insights
Circular RNAs (circRNAs) like hsa_circRNA_102415 are linked to gastric cancer (GC) progression. This study reveals hsa_circRNA_102415 promotes GC cell invasion and proliferation by regulating the miR-4529-5p/WNT2B axis.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Circular RNAs (circRNAs) are non-coding RNA molecules with specific functions.
- Emerging evidence suggests a link between circRNAs and gastric cancer (GC) prognosis.
- The precise mechanisms underlying circRNA involvement in GC malignancy remain underexplored.
Purpose of the Study:
- To investigate the role of hsa_circRNA_102415 in gastric cancer (GC).
- To elucidate the functional mechanisms of hsa_circRNA_102415 in GC cell behavior.
- To provide insights for developing targeted GC therapies.
Main Methods:
- Utilized Gene Expression Omnibus (GEO) dataset GSE83521 and GEO2R for differential expression analysis.
- Employed quantitative real-time polymerase chain reaction (qRT-PCR) to validate circRNA expression in GC tissues.
- Performed cell transfection, Transwell assays, and CCK-8 assays to assess GC cell proliferation and invasion.
- Investigated molecular interactions using Argonaute 2-RNA immunoprecipitation (RIP) and luciferase reporter assays.
Main Results:
- hsa_circRNA_102415 exhibited significantly higher expression in GC tissues compared to normal tissues.
- A negative correlation was observed between hsa_circRNA_102415 and microRNA (miR)-4529-5p in GC cells.
- hsa_circRNA_102415 acts as a competing endogenous RNA (ceRNA) to upregulate WNT2B expression, promoting GC cell malignant behaviors.
Conclusions:
- hsa_circRNA_102415 promotes GC cell proliferation and invasion via the miR-4529-5p/WNT2B pathway.
- Targeting hsa_circRNA_102415 may offer a novel therapeutic strategy for gastric cancer.
- This study clarifies the molecular mechanism of hsa_circRNA_102415 in GC, aiding future research and treatment development.
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