未登录,请登录后再发表信息
最新评论 (0)
播放视频

从动物的角上能学到什么?

What antlers can teach us about cancer and regrowing limbs

What do cows, rams, and giraffes have in common?
牛 公羊和长颈鹿有什么共同点呢?
Their bony headgear.
它们都有角
From curly horns to pronghorns,
从卷角到叉角
branching antlers to knobby ossicones,
从分支鹿角到多节的角状突起
all these mammals have elaborate bones
这些哺乳动物的头上
growing out of their heads.
都长出了复杂的骨头
Kind of strange when you think about it.
想到这些你会觉得有些奇怪
Scientists thought it was strange, too.
科学家们也觉得奇怪
So they took a closer look at
于是他们对这些“头顶的荣耀”的生长
how these crowning glories grow.
进行了仔细的研究
They found that when horns or antlers start to grow,
他们发现每当角或者鹿角开始生长时
many of the genes used to create nerve, skin, and bone
许多跟生成角神经 皮肤和骨骼相关的基因
during early development were switched on.
在生长早期就被激活
The fact that the process was similar in horns and antlers
事实上这些羊角和牛角相似的生长过程
suggests that animals with bony head growths
暗示着头上有骨头生长的动物
all descend from a common ancestor.
是由同一个祖先进化而来
But antlers grow back, year after year.
但鹿角可以年复一年地再生
Unlike our amphibian cousins,
不同于我们的近亲两栖动物
most mammals can’t grow something like a limb on demand.
大多数哺乳动物的四肢无法随意生长
Antlers aren’t simply bone,
鹿角不仅仅是骨头
they’re covered in skin and laced with delicate nerves.
它们被皮肤包裹并且周围有敏感的神经
And they grow really fast.
而且鹿角生长的非常快
We’re talking 30 kg of antler in less than a year.
不到一年就能长出30公斤鹿角
This fast, complicated tissue growth
这种年复一年
that regenerates year after year
复杂而又快速的组织生长
has caught the attention of tissue engineers
引起了组织工程师的注意
—people looking to regrow human limbs.
——这群人致力于让人类的四肢再生
When scientists examined deer during antler-growing season,
在鹿角生长季节 科学家对鹿群进行了检测
they found that an unusual set of genes come to life,
他们发现有一组不寻常的基因被激活
some of the genes turned on in a cell destined to become an antler
在注定分化成鹿角的细胞中被激活的基因
are associated with cancers in humans.
有一些是与人类的癌症有关的
But these beasts don’t have a higher rate of cancer.
但这些动物并没有更高的癌症发病率
In fact, cervids like deer are 5 times less likely
事实上 鹿科动物的癌症发病率
to get cancer than other mammals.
比其他哺乳动物低五倍
This suggests they’ve found a way
这说明它们找到了方法
to control otherwise dangerous cancer pathways
去控制本可能很危险的癌症路径
—harnessing fast growth
——快速生长的同时
without the out-of-control proliferation of cancer cells.
没有失控的癌细胞增殖
Exploring these genes may help scientists
探究这些基因有利于科学家们在未来的研究中
understand cancer growth in the future,
理解癌细胞生长机制
particularly bone cancers like osterocarcinoma.
尤其是像骨肉瘤这种骨癌
And tissue engineers can also look at these processes
这些过程还可以帮助组织工程师
to further understand how to make prosthesis
进一步了解如何制作假肢
or one day regrow limbs.
或者有一天让四肢再生
This is just antlers.
这里研究的只是鹿角
Who knows what horns may have to offer?
谁知道我们从牛角中又能学到什么呢?
You may never look at the
你可能要对这种
cud-chewing, horn-sporting cow the same way again.
既能反刍头上又长角的牛刮目相看了

发表评论

译制信息
视频概述

根据鹿角的再生,科学家们发现其中基因与人类的癌症有关,组织工程师则有望利用这一快速生长进行四肢的再生

听录译者

收集自网络

翻译译者

一颗大橙子

审核员

审核员AL

视频来源

https://www.youtube.com/watch?v=ynMnrbq--WU

相关推荐