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Background

Circular RNAs (circRNAs) have been implicated in the initiation and development of various cancers. This study explored the potential contribution of hsa_hsa_circ_0081069 in the progression of colorectal cancer (CRC).

Methods

The gene expression was analyzed by qRT-PCR. Functional roles of hsa_circ_0081069 were examined by shRNA-mediated silencing using CCK-8 proliferation assay, Transwell migration and invasion assay, tube formation assay. The tumorigenesis and metastasis of CRC cells were assess in a xenograft mouse model.

Results

Hsa_circ_0081069 was significantly upregulated in CRC tissues and cells. Hsa_circ_0081069 knockdown suppressed the proliferation, migration and invasion in CRC cells, as well as the angiogenesis. Silencing hsa_circ_0081069 also impaired the tumorigenesis of CRC cells in a xenograft mouse model. Furthermore, miR-665 was identified as an interacting partner of hsa_circ_0081069, which was negatively regulated by hsa_circ_0081069. miR-665 targeted the mRNA of E2F3 to suppress its expression. We further demonsatred that miR-665/E2F3 axis mediated the functional role of hsa_circ_0081069 in regulating the malignant phenotype of CRC cells.

Conclusions

Collectively, our study suggests that hsa_circ_0081069 could serve as a prognostic marker in progression of CRC. Targeting hsa_circ_0081069 and miR-665/E2F3 axis could serve as potential therapeutic strategies for CRC treatment."xsd:string
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http://purl.uniprot.org/citations/36181281http://purl.uniprot.org/core/author"Jin J."xsd:string
http://purl.uniprot.org/citations/36181281http://purl.uniprot.org/core/author"Xu J."xsd:string
http://purl.uniprot.org/citations/36181281http://purl.uniprot.org/core/author"Yang F."xsd:string
http://purl.uniprot.org/citations/36181281http://purl.uniprot.org/core/author"Xie J."xsd:string
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http://purl.uniprot.org/citations/36181281http://purl.uniprot.org/core/name"J Clin Lab Anal"xsd:string
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http://purl.uniprot.org/citations/36181281http://purl.uniprot.org/core/title"Hsa_hsa_circ_0081069 promotes the progression of colorectal cancer through sponging miR-665 and regulating E2F3 expression."xsd:string
http://purl.uniprot.org/citations/36181281http://purl.uniprot.org/core/volume"36"xsd:string
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