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Updated: Aug 15, 2025

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An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
Published on: May 21, 2019
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Circular RNA Fibroblast Growth Factor Receptor 1 Promotes Pancreatic Cancer Progression by Targeting
Kai-Qiong Wang1, Mu-Lin Ye2, Xin Qiao1
1From the Department of Hepatobiliary and Pancreatic Surgery.
Pancreas
|January 6, 2023
Summary
Circular RNA fibroblast growth factor receptor 1 (circFGFR1) drives pancreatic cancer progression by targeting miR-532-3p and PIK3CB. Inhibiting circFGFR1 may offer a new therapeutic strategy for pancreatic ductal adenocarcinoma (PDAC).
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Pancreatic ductal adenocarcinoma (PDAC) is a lethal malignancy with complex molecular underpinnings.
- Circular RNAs (circRNAs) are emerging as critical regulators in cancer development and progression.
Purpose of the Study:
- To investigate the role and mechanism of circFGFR1 in PDAC progression.
- To elucidate the regulatory axis involving circFGFR1, miR-532-3p, and PIK3CB in PDAC.
Main Methods:
- Quantitative real-time PCR and in situ hybridization for expression analysis.
- In vitro assays (cell growth, migration, invasion, apoptosis) and in vivo xenograft models.
- Dual-luciferase and RNA pull-down assays to confirm molecular interactions.
Main Results:
- Knockdown of circFGFR1 inhibited PDAC cell growth, migration, invasion, and metastasis.
- circFGFR1 acts as a sponge for miR-532-3p, leading to increased PIK3CB levels.
- Overexpression of circFGFR1 or PIK3CB reversed the tumor-suppressive effects of miR-532-3p mimics.
Conclusions:
- circFGFR1 promotes PDAC malignancy via the miR-532-3p/PIK3CB pathway.
- circFGFR1 represents a potential therapeutic target for PDAC treatment.
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