AACR 2015:牛奶蓟提取物可以停止大肠肿瘤干细胞生长

2015-04-27 佚名 生物谷

在美国癌症研究协会(AARC)2015年年会上,来自科罗拉多大学的学者展示了最新的研究结果关于治疗结直肠癌的新潜力药物——口服水飞蓟宾(silibinin,从牛奶蓟中纯化提取),减慢结直肠癌干细胞生长的能力。在美国癌症研究协会(AARC)2015年年会上,来自科罗拉多大学的学者展示了最新的研究结果关于治疗结直肠癌的新潜力药物——口服水飞蓟宾(silibinin,从牛奶蓟中纯化提取),减慢结直肠癌干

在美国癌症研究协会(AARC)2015年年会上,来自科罗拉多大学的学者展示了最新的研究结果关于治疗结直肠癌的新潜力药物——口服水飞蓟宾(silibinin,从牛奶蓟中纯化提取),减慢结直肠癌干细胞生长的能力。



在美国癌症研究协会(AARC)2015年年会上,来自科罗拉多大学的学者展示了最新的研究结果关于治疗结直肠癌的新潜力药物——口服水飞蓟宾(silibinin,从牛奶蓟中纯化提取),减慢结直肠癌干细胞生长的能力。水飞蓟宾治疗后采样的肿瘤干细胞重新注入到新模型上,细胞未能发展成具有同样侵袭性的肿瘤,即使在没有再服用水飞蓟宾的情况下。

水飞蓟宾是存在于牛奶蓟种子内的非毒性,潜在的化学预防剂。在去年的AACR年会上Agarwal博士和他的同事发现,在细胞培养物中,水飞蓟宾影响大肠癌干细胞的形成和生存相关的细胞信号传导。现在,这个充满希望的研究扩展到这个小鼠模型上。研究人员将结直肠癌干细胞种植到喂或不喂水飞蓟宾的小鼠体内。肿瘤生长通过可见的尺寸测量,MRI扫描和肿瘤代谢率(葡萄糖的使用)来测量。随后小鼠体内的肿瘤干细胞重新注入下一代小鼠,以测量在没有水飞蓟宾影响下的肿瘤生长模式。

“在水飞蓟宾喂养的小鼠肿瘤内,肿瘤干细胞数目很少,肿瘤体积较小,代谢水平较低,并表现出新的血管生长水平下降。更重要的是,水飞蓟宾喂养的小鼠的肿瘤干细胞失去了分裂繁殖的能力。”Rajesh Agarwal博士总结说道。

研究人员表示他们已经在深入进行这项研究,从水飞蓟宾本身到它在结直肠癌的化学预防性。目前的研究正在验证一个重要之处:在动物模型上同时观察到可能的化学预防特性和治疗效果。具体的分子机制的发现还需要一定的研究,确认水飞蓟宾在癌症的预防和或治疗的人体临床实验也在计划之中。

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    2015-04-29 10518094zz
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    2015-04-29 Luyuxie_14
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