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  • Title: Berberine enhances radiosensitivity of esophageal squamous cancer by targeting HIF-1α in vitro and in vivo.
    Author: Yang X, Yang B, Cai J, Zhang C, Zhang Q, Xu L, Qin Q, Zhu H, Ma J, Tao G, Cheng H, Sun X.
    Journal: Cancer Biol Ther; 2013 Nov; 14(11):1068-73. PubMed ID: 24025355.
    Abstract:
    Radiation therapy is an important treatment approach for esophageal squamous cell carcinoma (ESCC). However, how to promote radiation sensitivity in ESCC remains a challenge. This study aimed to evaluate the effects of berberine, a common used Chinese medicine, on the radiosensitivity of ESCC. ECSS cell line ECA109 and TE13 were subjected to hypoxia and/or ionizing radiation (IR), in the presence or absence of berberine treatment. Cell growth and survival, and apoptosis were evaluated. In addition, ECA109 cells were xenografted into nude mice and subjected to IR and/or berberine treatment. The expression of HIF-1α and VEGF was detected by western blot and immunohistochemical analysis. Our results showed that berberine increased radiosensitivity of ESCC cells and xenografts, and this was associated with the inhibition of HIF-1α and VEGF expression. These data suggest that berberine may be a potential radiotherapy sensitization drugs due to its significant anti-hypoxia activity.
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