The study on circRNA profiling uncovers the regulatory function of the hsa_circ_0059665/miR-602 pathway in breast cancer
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View abstract on PubMed
Summary
This summary is machine-generated.This study identifies hsa_circ_0059665 as a novel tumor suppressor in breast cancer. It acts as a molecular sponge for miR-602, inhibiting cancer cell proliferation, migration, and invasion, offering potential therapeutic targets.
Area Of Science
- Oncology
- Molecular Biology
- Genetics
Background
- Circular RNAs (circRNAs) are implicated in various cancers, but their specific roles in breast cancer progression are not fully understood.
- Identifying novel circRNAs and their mechanisms is crucial for understanding breast cancer biology and developing targeted therapies.
Purpose Of The Study
- To identify novel circRNAs involved in breast cancer progression.
- To elucidate the functional mechanisms of these circRNAs, particularly hsa_circ_0059665, in breast cancer.
- To construct a competing endogenous RNA (ceRNA) network to understand regulatory interactions.
Main Methods
- Bioinformatic analysis of public circRNA and RNA-sequencing data to identify differentially expressed circRNAs and mRNAs.
- Construction of circRNA-miRNA-mRNA ceRNA networks and Protein-Protein Interaction (PPI) networks.
- Experimental validation including Fluorescence in situ hybridization (FISH), Transwell assays, CCK-8 assays, and molecular interaction studies (RIP, luciferase reporter assay).
Main Results
- Identified 252 differentially expressed circRNAs in breast cancer, with 246 upregulated and 6 downregulated.
- Constructed a ceRNA network and identified six hub genes (KIT, FGF2, NTRK2, CAV1, LEP) significantly downregulated in breast cancer and associated with poor prognosis.
- Demonstrated that hsa_circ_0059665 is significantly downregulated in breast cancer, inhibits proliferation, migration, and invasion, and acts as a molecular sponge for miR-602.
Conclusions
- hsa_circ_0059665 functions as a tumor suppressor in breast cancer by sponging miR-602, thereby inhibiting cancer cell proliferation, migration, and invasion.
- The identified circRNA-related ceRNA network provides insights into breast cancer regulatory mechanisms.
- hsa_circ_0059665 represents a potential biomarker and therapeutic target for breast cancer treatment.
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