在托福听力考试的备考过程中，科学美国人60秒相信大家一定用得比较多，那么大家平时是如何利用这个课外资料的呢?这里小编整理了科学美国人60秒多吃西兰花预防癌细胞的内容分享，大家一起来学习一下吧。

科学美国人60秒听力练习：多吃西兰花预防癌细胞

科学美国人60秒英文文本

generations of American children have been told, “Eat your broccoli!” And for decades, researchers have known that broccoli and related vegetables like cauliflower and watercress appeared to lower the risk of some cancers. And that compounds in the vegetables could kill cancer cells. But how the cruciferous veggies worked their medical magic was a mystery. Until now. Because researchers have figured out just what broccoli does that helps keep cancer in check. The work appears in the Journal of Medicinal Chemistry. [Xiantao Wang et al., "Selective Depletion of Mutant p53 by Cancer Chemoprevention Isothiocyanates and Their Structure-Activity Relationships"]

Proteins coded by the gene p53 help keep cancer from starting to grow. But when the p53 gene is mutated, the protection is gone. Mutated p53 is implicated in about half of all human cancers.

Broccoli and its relatives are rich in compounds called isothiocyanates, or ITCs. And these ITCs apparently destroy the products of the mutant p53 gene, but leave the healthy p53 proteins alone and free to suppress tumor development.

The researchers write that “depletion of mutant p53 may reduce drug resistance and lead to new strategies for treating cancer in the clinic.” In the meantime, eat your broccoli!

—Steve Mirsky

科学美国人60秒中文翻译：

一代代的美国小朋友都被教导“多吃西兰花!”几十年过去了，科学家已经知道西兰花，及其相近的蔬菜如花菜、水田芥，都可以降低癌症的发生率。这些蔬菜含有的物质可以杀死癌细胞。但是为什么这些十字花科的植物具有如此神奇的功效依然是个迷。不过这个迷已经成为历史。因为科学家已经弄明白西兰花是如何抑制癌症的了。这一研究公布在了《医疗化学杂志》上[Xiantao Wang et al, Selective Depletion of Mutant 这一研究发现有一个叫p53的基因，能够编码蛋白，抑制癌细胞生长。当这个基因缺失时，这种保护也就不存在了。因此，缺失p53的突变体与一半的人类癌症都有关。

西兰花和它的近亲富含一类叫做异硫氰酸酯的物质，也就是ITCs。这些物质能够降解掉突变p53基因的产物，从而保留健康的p53蛋白，抑制肿瘤的发展。

科学家在论文中写到“消灭p53突变体能够降低抗药性，引出临床癌症治疗的新方法。”不过在生活中，还是多吃西兰花吧。

1. broccoli n.西兰花, 花椰菜, 甘蓝花

2. cauliflower n.花椰菜，菜花

3. watercress n. [植]水田芥, 豆瓣菜

4. cruciferous adj. [植]十字花科的

5. in check 受抑制, 受控制

6. depletion n.耗尽，枯竭

7. mutant n. 突变异种

8. implicate vt.牵涉, 意味着, 暗示

9. isothiocyanate n. [生]异硫氰酸盐, 异硫氰酸酯

以上就是小编为大家整理的科学美国人60秒：多吃西兰花预防癌细胞的文本以及翻译，大家练习的时候还可以找来音频资料一起练习，效果定会更好。最后，小编预祝大家托福考试能取得理想的成绩。