Int J Oncol:金-大黄酚纳米颗粒可通过失活AKT并诱导细胞凋亡和ROS产生抑制前列腺癌的进展

2017-12-03 MedSci MedSci原创

缓释仍是载药释药的最方便的方法。在本研究中,我们制备了大黄酚金纳米颗粒。将金-大黄酚转化为聚(DL-丙交酯-共-乙交酯)纳米颗粒,测试大黄酚纳米颗粒在人LNCap前列腺癌细胞上的生物活性,及缓释性能。圆二色光谱显示,大黄酚纳米颗粒有效地导致DNA构象改变,并调节与细胞周期停滞相关的不同蛋白质。分析活性氧(ROS)、细胞凋亡、细胞周期、DNA损伤、Cyto-c和caspase-3的活性,并使用免疫印

缓释仍是载药释药的最方便的方法。在本研究中,我们制备了大黄酚金纳米颗粒。将金-大黄酚转化为聚(DL-丙交酯-共-乙交酯)纳米颗粒,测试大黄酚纳米颗粒在人LNCap前列腺癌细胞上的生物活性,及缓释性能。

圆二色光谱显示,大黄酚纳米颗粒有效地导致DNA构象改变,并调节与细胞周期停滞相关的不同蛋白质。分析活性氧(ROS)、细胞凋亡、细胞周期、DNA损伤、Cyto-c和caspase-3的活性,并使用免疫印迹法分析不同抗凋亡蛋白和促凋亡蛋白的表达水平。

细胞毒性测定表明,与正常细胞相比,大黄酚纳米颗粒优先杀死前列腺癌细胞。大黄酚纳米颗粒可减少组蛋白脱乙酰基酶(HDAC)以抑制细胞增殖并通过阻滞细胞周期在亚G期来诱导细胞凋亡。此外,大黄素纳米颗粒还可调控细胞周期相关蛋白,包括p27、CHK1、cyclin D1、CDK1、p-AMP活化蛋白激酶(AMPK)和p-蛋白激酶B(AKT),以防止人类前列腺癌细胞的进展。

大黄酚纳米颗粒通过促进p53/ROS串扰以防止LNCap细胞增殖而诱导其凋亡。小鼠药代动力学研究表明,与游离大黄酚相比,大黄酚纳米颗粒注射剂的生物利用度更高。另外,体内研究显示大黄酚纳米颗粒可明显减少肿瘤体积和重量。

综上所述,该研究结果表明,大黄酚纳米颗粒可有效预防人类前列腺癌的进展。

原始出处:


Li Lu, Ke Li, et al., Gold-chrysophanol nanoparticles suppress human prostate cancer progression through inactivating AKT expression and inducing apoptosis and ROS generation in vitro and in vivo. Int J Oncol. 2017 Oct; 51(4): 1089–1103.

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    2018-07-26 xfpan20
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    2018-11-11 minlingfeng
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    2017-12-05 lsndxfj
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    2017-12-04 执着追梦

    学习.谢谢分享

    0

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    2017-12-03 changjiu

    学习一下谢谢

    0

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