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  • Title: RNA-binding motif protein 28 enhances angiogenesis by improving STAT3 translation in hepatocellular carcinoma.
    Author: Han H, Yuan Y, Li C, Liu L, Yu H, Han G, Wang Q, Lin M, Huang J.
    Journal: Cancer Lett; 2024 Nov 01; 604():217191. PubMed ID: 39181434.
    Abstract:
    Hepatocellular carcinoma (HCC) is a prevalent malignant tumor characterized by extensive angiogenesis. However, the underlying mechanisms of HCC pathogenesis remain unclear. Previous studies have shown that RNA-binding proteins (RBPs) are implicated in HCC pathogenesis. In this study, we observed that increased RBM28 expression in HCC tissues was positively correlated with tumor microvascular density and negatively correlated with patient prognosis. Overexpression of RBM28 in HCC cells promoted tubule formation in human umbilical vein endothelial cells, whereas inhibition of RBM28 had the opposite effect, furthermore, the role of RBM28 in the progression of HCC was assessed using transgenic mouse models and chemically induced HCC models. We used various molecular assays and high-throughput detection methods to evaluate the role of RBM28 in promoting angiogenesis in HCC. Increased RBM28 expression in HCC directly binds to STAT3 mRNA, recruiting EIF4E to increase STAT3 expression and enhancing the secretion and expression of vascular endothelial growth factor A; consequently, promoting neovascularization in HCC. The potential of RBM28 as a viable diagnostic and therapeutic target for HCC was assessed using multi-cohort clinical samples and animal models. In summary, our results provide insights into the pathogenesis, clinical diagnosis, and treatment of HCC.
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