Scientists at Colossal Biosciences in Dallas have made a groundbreaking announcement – they have successfully created what they are calling the Colossal Woolly Mouse, taking a significant stride towards reviving the well-loved woolly mammoth. This remarkable feat marks a pivotal moment in genetic engineering and de-extinction efforts. Beth Shapiro, the Chief Science Officer at Colossal, expressed her excitement, highlighting that this achievement is a crucial validation of their capability to genetically modify living organisms to exhibit woolly mammoth traits. The Colossal Woolly Mouse boasts features such as curlier hair, reminiscent of the mammoth mummies found in permafrost, and a gene that affects fat metabolism.
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While the concept of a woolly mouse may seem peculiar, it is a strategic move by the scientists at Colossal to streamline their experimentation process. In comparison to elephants, the closest living relatives to mammoths, mice offer a more viable option due to their shorter gestation period of just 20 days. Beth Shapiro emphasised the impracticality of waiting over a decade for elephants to exhibit woolly traits, making mice an ideal choice for conducting genetic experiments efficiently. The unique characteristics of mammoths, such as fat clumps on their backs for insulation, have been successfully replicated in the Colossal Woolly Mouse, providing a valuable model for studying cold-climate adaptations in mammals.
Looking ahead, scientists anticipate monitoring the Colossal Woolly Mice in cooler environments to observe how these genetic modifications impact their behaviour and well-being. The ultimate goal of the project is to create a hybrid species virtually indistinguishable from woolly mammoths, which could have significant implications beyond de-extinction. Colossal’s efforts may also contribute to combating elephant endotheliotropic herpesviruses, a deadly condition affecting young Asian elephants. Additionally, the team is concurrently working on projects to resurrect the Dodo and the Thylacine, reflecting their dedication to conservation and genetic diversity.
Anna Keyte, leading the Dodo revival, and Sara Ord, spearheading the Thylacine project, emphasise the broader ecological implications of their work. They recognise the importance of not only resurrecting lost species but also ensuring their resilience in the face of contemporary challenges. With discussions revolving around the ethical responsibility of undoing human-caused extinctions, the team at Colossal is navigating complex moral considerations in their pursuit of de-extinction. The Thylacine, driven to extinction by human activities, serves as a poignant example of the repercussions of environmental negligence.
Furthermore, the leadership roles held by women in Colossal’s de-extinction projects underscore a positive shift towards gender inclusivity in STEM fields. Beth Shapiro acknowledges the growing diversity in scientific disciplines, highlighting the invaluable contributions of varied perspectives in tackling complex biological challenges. With an increasing number of women entering STEM occupations, the scientific community is poised to benefit from a more inclusive and innovative workforce, essential for addressing pressing global issues.
As the woolly mice project progresses, the team at Colossal remains committed to ethical scientific practices and animal welfare. While the project is not intended to be perpetual, having achieved its initial objectives, there is assurance that the living mice will find caring homes once their research involvement concludes. The passion and dedication exhibited by the team towards both the scientific endeavour and the sentient beings involved encapsulate the ethos driving Colossal Biosciences towards pioneering genetic advancements to safeguard biodiversity and promote species conservation.