Mokhtari Majid, Khoshbakht Samane, Esmaeil Akbari Mohammad, Sayyed Sajjad Moravveji
Department of Bioinformatics, Kish International Campus, University of Tehran, Kish Island, Iran.
Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Heliyon. 2023 Nov 29;9(12):e22874. doi: 10.1016/j.heliyon.2023.e22874. eCollection 2023 Dec.
BACKGROUND: The gene has been linked to promoting metastasis in breast cancer (BC) cells, and low expression reduces invasion potential. Circular RNAs (circRNAs) function as microRNA (miRNA) modulators and are involved in cancer progression, but the relationship between these factors remains unclear. METHODS: This study used bioinformatics methods and a computational approach to investigate the role of circRNAs and miRNAs in the context of overexpression. Differentially expressed mRNAs, circRNAs, and miRNAs were identified using Gene Expression Omnibus (GEO) datasets. A competing endogenous RNA (ceRNA) network was constructed based on circRNA-miRNA pairs and miRNA-mRNA pairs. Functional and pathway enrichment analyses were predicted using a circRNA-miRNA-mRNA network. RESULTS: RNA expression patterns were significantly different between normal and tumor samples. A total of 190 circRNAs, 76 miRNAs, and 678 mRNAs were differentially expressed. The analysis of the circRNA-miRNA-mRNA regulatory network revealed interactions between hsa-circ-0100153, hsa-miR-31, hsa-miR-767-3p, and hsa-miR-935 with in cancer. These interactions primarily function in DNA replication and the cell cycle. CONCLUSIONS: This study reveals a mechanism by which overexpression affects the expression of circRNAs hsa-circ-0100153, promoting BC progression by sponging hsa-miR-31/hsa-miR-767-3p /hsa-miR-935. This mechanism may increase the invasive potential of cancers, in addition to other reported molecular mechanisms involving the gene.
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