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cover of episode Reviving The Woolly Mammoth ... With Mice

Reviving The Woolly Mammoth ... With Mice

2025/3/4
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Short Wave

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Rob Stein: 我报道了Colossal Biosciences公司利用基因编辑技术复活猛犸象的尝试。他们首先通过对猛犸象和现代大象基因组的比对,确定了与猛犸象特有性状相关的基因。由于大象繁殖周期长,难以进行实验验证,研究人员选择用老鼠作为模型生物,来验证这些基因的功能。实验结果表明,通过基因编辑,可以使老鼠长出更长、更卷曲、颜色更浅的毛发,这证明了他们的技术是可行的。这项研究为最终复活猛犸象奠定了基础,但同时也引发了广泛的争议。 一些科学家对这项研究表示赞赏,认为它为理解基因与性状的关系提供了宝贵的资料。然而,也有科学家对此表示担忧,他们认为这项研究的资金可以更好地用于保护现存的濒危物种。此外,他们还担心复活猛犸象可能会对生态系统造成不可预测的负面影响,甚至可能带来伦理问题。Colossal公司则回应称,复活猛犸象可以帮助修复生态系统,恢复猛犸象曾经生活的环境,并且这项技术可以应用于保护其他濒危物种。 Beth Shapiro: 我们通过比较猛犸象和现代大象的基因组,找到了使猛犸象具有独特特征的基因,例如浓密的毛发和特殊的脂肪代谢。由于大象繁殖周期长,我们选择用老鼠作为模型生物来验证这些基因的功能。实验结果验证了我们的假设,这让我们对复活猛犸象更有信心。我们的最终目标是创造出类似猛犸象的亚洲象,并最终将它们放归北极,以帮助修复生态系统。 Vincent Lynch: 我对这项技术印象深刻,老鼠实验的结果令人惊叹。但是,老鼠毕竟不是大象,我们不能保证同样的技术能够在象身上取得成功。此外,我认为复活猛犸象的意义值得商榷,将资金用于保护现存的濒危物种可能更有价值。 Carl Flessa: 我担心复活猛犸象可能会带来意想不到的负面后果,我们对生态系统的影响知之甚少。我不认为我们应该扮演上帝的角色,随意干预自然界的进程。 Ben Lamb: 当前的物种保护模式在应对快速变化的环境和物种灭绝方面效率低下,我们需要新的工具和技术。我们的技术不仅可以用于复活灭绝物种,还可以帮助我们更好地保护现存的濒危物种,使它们能够更好地适应人类活动的影响。

Deep Dive

Chapters
The episode introduces the concept of woolly mice, genetically modified to possess mammoth-like traits. These mice, created by Colossal Biosciences, serve as a crucial step in the company's ambitious goal of de-extinction, specifically targeting the woolly mammoth.
  • Woolly mice genetically modified by Colossal Biosciences
  • Mice possess mammoth-like traits (woolly coat, fat metabolism)
  • Key step towards de-extinction of woolly mammoth

Shownotes Transcript

You've heard of the woolly mammoth. But have you heard of woolly mice? These critters were genetically modified by the Dallas-based biotech company Colossal Biosciences) to have the same "woolly" and fat appearance as the ancient mammoths. The mice are a key step in the longer journey to de-extinct the woolly mammoth. NPR's Rob Stein) takes us to the lab where it all happened.*Interested in more biotech stories? Let us know by dropping a line to [email protected]).Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave).*Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)