Cancer Prevention Research:科学家正测试一种有前途的抗癌新药,有效阻止了50%细胞癌变!

2018-03-27 枫丹白露 来宝网

密歇根州立大学的科学家正在测试一种有前途的药物,可能会阻止与肥胖相关的基因引发乳腺癌和肺癌,并阻止这些癌症的发展。

有前景的药物可能会阻止致癌基因的产生】密歇根州立大学的科学家正在测试一种有前途的药物,可能会阻止与肥胖相关的基因引发乳腺癌肺癌,并阻止这些癌症的发展。

这些发现基于最新一期癌症预防研究中的两项研究。

第一个是由药理学和毒理学系副教授Karen Liby领导的临床前研究。研究结果显示,I-BET-762药物通过调整癌基因c-Myc的作用,显着延缓了现有乳腺癌和肺癌的发展。

“I-BET-762通过靶向DNA起作用,使得该基因不能被表达,”Liby说。“它通过抑制癌症和免疫细胞中的许多重要蛋白质来实现这一目标,最终将小鼠癌细胞的数量减少80%。”

这些蛋白质很重要,因为它们在细胞之间发生的事情中起着关键作用。例如,一种称为pSTAT3的特定蛋白质可以在免疫细胞中被激活,并阻止它们完成其工作,例如抵御入侵的癌症。这种有害的蛋白质也可能在癌细胞中过量表达,并起到屏蔽作用——最终保护肿瘤。

“在我们的研究中,这两种细胞的药物使pSTAT3水平下降50%,”Liby说。

第二项研究由药理学和毒理学助理教授Jamie Bernard领导,将利比研究的发现应用于癌前细胞。

“我们直接看了I-BET-762对可能变成致瘤性的人类细胞的影响,但还没有完成,”Bernard说。 “我们发现这种药物阻止了超过50%的这些细胞发生癌变。”

c-Myc基因由内脏脂肪诱导,内脏脂肪位于身体内部器官周围,而皮下脂肪位于皮肤下。这种内脏脂肪对你的健康更危险。

Bernard说:“近50万新癌症与肥胖有关。 “有证据表明,内脏脂肪和高脂肪饮食会增加癌症风险;尽管目前的癌症治疗有助于降低癌症死亡率,但与肥胖相关的癌症数量仍在不断攀升。”

Bernard说,由于在降低乳腺癌和肺癌的高死亡率方面取得的成效有限,因此迫切需要采取新的预防方法。

类似于I-BET-762的药物也正在临床试验中用于治疗各种其他癌症,包括白血病淋巴瘤,脑肿瘤和骨髓瘤。利比和伯纳德希望I-BET-762能够增加乳腺癌和肺癌患者的生存机会。

“目标是我们的研究结果将阐明需要针对什么,因此可用于预防高风险患者群体中的癌症,”Bernard说。

原始出处:

Debrup Chakraborty et al. A BET Bromodomain Inhibitor Suppresses Adiposity-Associated Malignant Transformation, Cancer Prevention Research (2017). DOI: 10.1158/1940-6207.CAPR-17-0262.

Di Zhang et al. Chemoprevention of Preclinical Breast and Lung Cancer with the Bromodomain Inhibitor I-BET 762, Cancer Prevention Research (2017). DOI: 10.1158/1940-6207.CAPR-17-0264.

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    2018-12-02 lhlxtx
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    2018-03-29 axin014
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    2018-03-29 yangshch

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