Affiliation:
1. Department of General Surgery The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou first People's Hospital Xuzhou Jiangsu China
Abstract
AbstractAimTo evaluate the potential role of serum and tissue hsa_circ_0008621 as a prognostic biomarker for CRC patients. Focused on the functional role of hsa_circ_0008621 in colorectal cancer (CRC).MethodsSerum and tissue hsa_circ_0008621 expression were quantified by qRT‐PCR in 157 CRC patients, as well as 100 serums from healthy controls. Serum and tissue hsa_circ_0008621 expression was evaluated for their prognostic role in CRC patients using Kaplan–Meier curves and Multivariate Cox proportional hazards analysis. To further characterize the biological role of hsa_circ_0008621 expression in CRC, in vitro hsa_circ_0008621 inhibition was performed and the effects on cellular growth, migration, invasion, apoptosis, and glycolysis were explored. Next, the downstream molecules for hsa_circ_0008621 were predicted.ResultsHsa_circ_0008621 expression was significantly upregulated in CRC tissues and serums. Serum hsa_circ_0008621 levels were significantly up‐regulated in advanced‐staged samples. High serum hsa_circ_0008621 expression was associated with shorter overall survival and recurrence‐free survival in CRC patients. Multivariate Cox regression analysis identified a high level of serum hsa_circ_0008621 expression as an independent prognostic factor with respect to overall survival and recurrence‐free survival. Loss of function assays for hsa_circ_0008621 in vitro led to a significant decrease in cell proliferation, migration, invasion, and glycolysis, but an increase in cell apoptosis. Hsa_circ_0008621 can sponge miR‐532‐5p, which targets SLC16A3.ConclusionHigh level of serum hsa_circ_0008621 is associated with poor survival in CRC and promotes CRC progression, suggesting it to be a promising non‐invasive prognostic biomarker and novel therapeutic target in CRC patients.