Colossal Biosciences' "Dire Wolf" Controversy: De-Extinction and Conservation

The "Dire Wolf" Controversy Explained

• 💡 Colossal Biosciences has claimed to bring back the iconic "dire wolf" from extinction, sparking significant media coverage and debate.
• 🎯 The company created proxy wolves by taking DNA from grey wolves and making 20 edits to 14 genes to express traits associated with dire wolves, such as size and coat color.
• 🐺 These gene-edited grey wolves were implanted into dogs and reportedly delivered via C-section, leading to questions about whether they can be accurately called "dire wolves" or if this constitutes true de-extinction.

De-Extinction: Definitions and Technology

• 🔬 Beth Shapiro, Colossal's Chief Science Officer, clarifies that it's impossible to create a 100% genetically identical extinct species; the best outcome is creating proxies to potentially replace extinct species in ecosystems.
• 📄 The IUCN defines de-extinction as creating an organism that resembles an extinct species, but notes the term itself is misleading.
• 🐁 Colossal's earlier work with woolly mice demonstrated their ability to make multiple gene edits, though it's complex and not a simple copy-paste of genes.

Ethical Considerations and Animal Welfare

• ⚠️ Gene editing can have unintended consequences; for instance, edits intended for coat color in proxy dire wolves could lead to blindness or deafness in dogs, prompting Colossal to avoid those specific edits.
• ⚖️ Colossal emphasizes animal welfare, aiming to make the fewest necessary edits to minimize risk, with only 20 edits made to the proxy dire wolves.
• ❓ A major concern is why Colossal focuses on extinct species instead of currently endangered ones, to which the company states they are pursuing both.

Broader Conservation Efforts by Colossal

• 🚀 Colossal makes its de-extinction technologies, including genetic rescue, biobanking, and cryofreezing, available for free for conservation purposes.
• 🐺 They used a new cloning technique to create four critically endangered red wolves, increasing the genetic diversity of captive populations.
• 📈 Colossal aims to raise the profile of wolf preservation and other conservation projects through their high-profile work.

Challenges and Future of De-Extinction

• 🌍 The company selects extinct species for research based on feasibility and significance (cultural, indigenous, ecological), with ongoing projects including the mammoth, dodo, and Tasmanian tiger.
• ⚠️ Potential disadvantages of de-extinction, as outlined by the IUCN, include decreased support for preventing current extinctions, risks to animals involved, and ecological concerns like invasiveness and disease transmission.
• 🤝 Colossal views de-extinction not as a replacement for conservation but as a complementary tool, emphasizing it's not a zero-sum game.