Related Experiment Video
Updated: Sep 27, 2025

Quantitative PCR-based Assay to Measure Sonic Hedgehog Signaling in Cellular Model of Ciliogenesis
Published on: January 31, 2025
Circ_0001971 makes progress of oral squamous cell carcinoma by targeting miR-107/FZD4 axis
1Department of Stomatology, Jingmen No.1 People's Hospital, Jingmen City, China.
Background:
Accumulating articles have suggested the important regulatory roles of circular RNAs in human cancers, including oral squamous cell carcinoma (OSCC). However, the role of circ_0001971 in OSCC progression remains to be determined.
Methods:
3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and colony formation assays were conducted to analyze cell proliferation ability. Cell migration and invasion abilities were assessed by transwell assays. Dual-luciferase reporter assay was conducted to confirm the target relation between miR-107 and circ_0001971 or FZD4. Xenograft tumor model was established to analyze the biological role of circ_0001971 in regulating tumor growth in vivo.
Results:
Circ_0001971 was markedly up-regulated in OSCC tissues and cell lines. Circ_0001971 knockdown inhibited the growth of xenograft tumors in vivo. miR-107 was confirmed as a direct target of circ_0001971, and circ_0001971 depletion-mediated anti-tumor effects in OSCC cells could be largely alleviated by silencing miR-107. miR-107 directly targeted the 3' untranslated region of FZD4, and FZD4 overexpression largely reversed the anti-tumor effects of circ_0001971 in OSCC cells. Circ_0001971 could positively regulate FZD4 expression by targeting miR-107 in OSCC cells.
Conclusion:
Circ_0001971 promoted the proliferation, migration, and glycolysis of OSCC cells through mediating miR-107/FZD4 axis. Circ_0001971 might be a new effective target for OSCC treatment in future.
Insights
Circular RNA circ_0001971 promotes oral squamous cell carcinoma (OSCC) progression by regulating the miR-107/FZD4 axis. This finding suggests circ_0001971 as a potential therapeutic target for OSCC treatment.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Circular RNAs (circRNAs) play regulatory roles in human cancers.
- The specific function of circ_0001971 in oral squamous cell carcinoma (OSCC) remains unclear.
Purpose of the Study:
- To investigate the role of circ_0001971 in the progression of oral squamous cell carcinoma (OSCC).
- To elucidate the molecular mechanism underlying circ_0001971's function in OSCC.
Main Methods:
- Cell proliferation, migration, and invasion assays were performed.
- Dual-luciferase reporter assays confirmed molecular interactions.
- A xenograft tumor model was utilized to assess in vivo effects.
Main Results:
- Circ_0001971 expression was significantly elevated in OSCC tissues and cell lines.
- Knockdown of circ_0001971 inhibited tumor growth in vivo and OSCC cell progression.
- Circ_0001971 positively regulates FZD4 expression by targeting miR-107.
Conclusions:
- Circ_0001971 promotes OSCC cell proliferation, migration, and glycolysis via the miR-107/FZD4 pathway.
- Circ_0001971 represents a promising therapeutic target for oral squamous cell carcinoma.
Related Concept Videos
Abnormal Proliferation
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
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...
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,...
MicroRNAs
Cancer-Critical Genes II: Tumor Suppressor Genes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...

