首页> 外文期刊>Life sciences >Ganoderma lucidum polysaccharides peptide inhibits the growth of vascular endothelial cell and the induction of VEGF in human lung cancer cell.
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Ganoderma lucidum polysaccharides peptide inhibits the growth of vascular endothelial cell and the induction of VEGF in human lung cancer cell.

机译:灵芝多糖肽在人肺癌细胞中抑制血管内皮细胞的生长和诱导VEGF。

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摘要

Ganoderma lucidum Polysaccharide Peptide (Gl-PP) has shown some effects as anti-tumors in mice and potential anti-angiogenesis. In this study, we elucidated the possible mechanism of Gl-PP action on anti-angiogenesis of tumor. Our research indicated that the proliferation of HUVECs was inhibited by Gl-PP in a dose-dependent fashion, but not because of cytotoxicity. Flow cytometric studies revealed that Gl-PP treatment of HUVECs could induce cell apoptosis directly. Moreover, addition of Gl-PP also led to a reduction of Bcl-2 anti-apoptotic protein expression and an increase of Bax pro-apoptotic protein expression of HUVECs. Therefore, inducing cell apoptosis by Gl-PP might be the mechanism of inhibiting HUVEC proliferation. Human lung carcinoma cells PG when exposed to high dose of Gl-PP in hypoxia for 18 h resulted in a decrease in the secreted VEGF. Taken together, these findings support the hypothesis that the key attribute of the anti-angiogenic potential of Gl-PP is that it may directly inhibit vascular endothelial cell proliferation or indirectly decrease growth factor expression of tumor cells.
机译:灵芝多糖肽(G1-PP)已显示出一些抗小鼠肿瘤作用和潜在的抗血管生成作用。在这项研究中,我们阐明了G1-PP作用于抗肿瘤血管生成的可能机制。我们的研究表明,HUVEC的增殖被G1-PP抑制,呈剂量依赖性,但不是因为细胞毒性。流式细胞术研究表明,G1-PP处理HUVEC可以直接诱导细胞凋亡。此外,添加G1-PP还导致HUVEC的Bcl-2抗凋亡蛋白表达减少和Bax促凋亡蛋白表达增加。因此,G1-PP诱导细胞凋亡可能是抑制HUVEC增殖的机制。人肺癌细胞PG在低氧环境中暴露于高剂量的G1-PP达18小时后,导致分泌的VEGF减少。综上所述,这些发现支持以下假设:G1-PP的抗血管生成潜力的关键属性是它可以直接抑制血管内皮细胞增殖或间接降低肿瘤细胞的生长因子表达。

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