Circular RNA hsa_circ_0062682 binds to YBX1 and promotes oncogenesis in hepatocellular carcinoma

Razpotnik, Rok (author), Vidmar, Robert (author), Fonović, Marko (author), Rozman, Damjana (author), Režen, Tadeja (author)

Circular RNAs (circRNAs) have been shown to play an important role in the pathogenesis of hepatocellular carcinoma (HCC). By implementing available transcriptomic analyses of HCC patients, we identified an upregulated circRNA hsa_circ_0062682. Stable perturbations of hsa_circ_0062682 in Huh-7 and SNU-449 cell lines influenced colony formation, migration, cell proliferation, sorafenib sensitivity, and additionally induced morphological changes in cell lines, indicating an important role of hsa_circ_0062682 in oncogenesis. Pathway enrichment analysis and gene set enrichment analysis of the transcriptome data from hsa_circ_0062682 knockdown explained the observed phenotypes and exposed transcription factors E2F1, Sp1, HIF-1α, and NFκB1 as potential downstream targets. Biotinylated oligonucleotide pulldown combined with proteomic analyses identified protein interaction partners of which YBX1, a known oncogene, was confirmed by RNA immunoprecipitation. Furthermore, we discovered a complex cell-type-specific phenotype in response to the oncogenic potential of hsa_circ_0062682. This finding is in line with different classes of HCC tumours, and more studies are needed to shed a light on the molecular complexity of liver cancer.

• Language: English
• Keywords: hepatocellular carcinoma, circRNAs, transcriptomic analyses, circular RNA, HCC, YBX1
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: MF - Faculty of Medicine
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: 25 str.
• Numbering: Vol. 14, iss. 18, art. 4524
• PID: 20.500.12556/RUL-165933
• UDC: 616-006
• ISSN on article: 2072-6694
• DOI: 10.3390/cancers14184524
• COBISS.SI-ID: 122291459
• Publication date in RUL: 13.12.2024

Record is a part of a journal

• Title: Cancers
• Shortened title: Cancers
• Publisher: MDPI
• ISSN: 2072-6694
• COBISS.SI-ID: 517914137

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: hepatocelularni karcinom, circRNAs, transkriptomske analize