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CircARL8B Contributes to the Development of Breast Cancer Via Regulating miR-653-5p/HMGA2 Axis.
Wu, Hansheng; Xu, Jingyun; Gong, Guoliang; Zhang, Yuanxin; Wu, Shenggui.
Afiliação
  • Wu H; Department of Thoracic Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China.
  • Xu J; Department of Pathology, The First Affiliated Hospital of Shantou University Medical College, No. 57, Changping Road, Shantou, 515041, Guangdong, China.
  • Gong G; Department of Pathology, The First Affiliated Hospital of Shantou University Medical College, No. 57, Changping Road, Shantou, 515041, Guangdong, China. blkggl@163.com.
  • Zhang Y; Department of Pathology, Chaonan Minsheng Hospital of Shantou, Shantou, Guangdong, China. blkggl@163.com.
  • Wu S; Department of Pathology, Chaonan Minsheng Hospital of Shantou, Shantou, Guangdong, China.
Biochem Genet ; 59(6): 1648-1665, 2021 Dec.
Article em En | MEDLINE | ID: mdl-34050452
Circular RNAs (circRNAs) act as essential regulators in breast cancer (BC) progression. In this paper, we aimed to investigate the functions of circARL8B in BC. The levels of circARL8B, ADP Ribosylation Factor Like GTPase 8B (ARL8B), miR-653-5p and high-mobility group AT-hook 2 (HMGA2) mRNA were examined by qRT-PCR. The stability of circARL8B was determined by RNase R assay and Actinomycin D assay. Cell viability and metastasis were evaluated by Cell Counting Kit-8 (CCK-8) assay and transwell assay, respectively. The levels of cellular phospholipids and triglycerides were measured using relevant kits. Protein levels were measured by western blot analysis. The association between miR-653-5p and circARL8B or HMGA2 was verified by dual-luciferase reporter assay. A murine xenograft model was established to explore the function of circARL8B in vivo. CircARL8B was increased in BC tissues and cells. CircARL8B silencing inhibited cell viability, migration, invasion and fatty acid metabolism in BC cells in vitro and blocked tumor growth in vivo. MiR-653-5p was identified as the target of circARL8B and miR-653-5p was negatively modulated by circARL8B. The suppressive role of circARL8B silencing in BC cell progression was abolished by miR-653-5p downregulation. Moreover, HMGA2 was the target gene of miR-653-5p. HMGA2 overexpression abrogated the effect of miR-653-5p on BC cell development. In addition, circARL8B knockdown might block PGE2/PI3K/AKT/GSK-3ß/Wnt/ß-catenin pathway. Silencing of circARL8B inhibited cell viability, migration, invasion and fatty acid metabolism via miR-653-5p/HMGA2 axis in BC.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Neoplasias da Mama / MicroRNAs / RNA Circular Tipo de estudo: Prognostic_studies Limite: Animals / Female / Humans Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Neoplasias da Mama / MicroRNAs / RNA Circular Tipo de estudo: Prognostic_studies Limite: Animals / Female / Humans Idioma: En Ano de publicação: 2021 Tipo de documento: Article