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Updated: Feb 17, 2026

In Vivo Inhibition of MicroRNA to Decrease Tumor Growth in Mice
Published on: August 23, 2019
MicroRNA-582-5p suppressed gastric cancer cell proliferation via targeting AKT3
1Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Xinyuan District, Wenzhou, Zhejiang Province, China. 79661623@qq.com.
Objective:
To dissect the functioning mode of miR-582-5p on gastric cancer cell growth and provide therapeutic targets for gastric cancer.
Patients And Methods:
Relative expression levels of miR-582-5p in human gastric cancer tissue samples and gastric cancer-derived cell lines were measured by using quantitative Real-time PCR. Cell proliferation and viability capacities were assessed by cell counting kit-8 (CCK8) assay and colony formation assay. Cell apoptosis and cell cycle distribution were identified by flow cytometry. Downstream target gene was confirmed by using luciferase and Western blotting assays.
Results:
MiR-582-5p was downregulated in gastric cancer tissues when compared with para-carcinoma tissues (n=42). Overexpressed miR-582-5p could attenuate cell proliferation and viability capacities, as well as promoted cell apoptosis and cell cycle arrest at G0/G1 phase. AKT3 was chosen as the target gene of miR-582-5p by bioinformatics analysis and luciferase reporter assay. Moreover, restoration of AKT3 could impair tumor suppression role of miR-582-5p on gastric cancer growth.
Conclusions:
MiR-582-5p exerted tumor-suppressive effects on gastric cancer growth via targeting AKT3 in vitro, which provided an innovative and candidate target for diagnosis and treatment of gastric cancer.
Insights
MicroRNA-582-5p (miR-582-5p) acts as a tumor suppressor in gastric cancer by inhibiting cell growth and promoting apoptosis. It targets AKT3, offering a potential therapeutic strategy for gastric cancer treatment.
Area of Science:
- Molecular Oncology
- Cancer Biology
- Biochemistry
Background:
- Gastric cancer remains a significant global health challenge.
- Understanding the molecular mechanisms underlying gastric cancer progression is crucial for developing effective therapies.
- MicroRNAs (miRNAs) play critical roles in various cancers, including gastric cancer.
Purpose of the Study:
- To elucidate the functional role of miR-582-5p in gastric cancer cell growth.
- To identify potential therapeutic targets for gastric cancer treatment based on miR-582-5p function.
Main Methods:
- Quantitative Real-time PCR (qRT-PCR) to measure miR-582-5p expression.
- Cell counting kit-8 (CCK8) and colony formation assays for proliferation and viability.
- Flow cytometry for apoptosis and cell cycle analysis.
- Luciferase and Western blotting assays to validate target genes.
Main Results:
- MiR-582-5p was significantly downregulated in gastric cancer tissues compared to adjacent normal tissues.
- Overexpression of miR-582-5p suppressed gastric cancer cell proliferation and viability.
- Upregulating miR-582-5p induced apoptosis and caused cell cycle arrest at the G0/G1 phase.
- AKT3 was identified as a direct target of miR-582-5p, and its restoration counteracted the tumor-suppressive effects of miR-582-5p.
Conclusions:
- MiR-582-5p exhibits tumor-suppressive properties in gastric cancer by targeting AKT3.
- This miRNA represents a promising candidate for the diagnosis and treatment of gastric cancer.
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