How does Colossal Biosciences' approach to de-extinction differ from Jurassic Park?

Unlike Jurassic Park's fictional method of filling gaps with frog DNA, Colossal Biosciences uses a 'reverse Jurassic Park' approach. They focus on understanding the genome of the closest living relative (e.g., Asian elephant for mammoth) and selectively engineering specific mammoth genes into it, rather than piecing together fragmented ancient DNA with foreign sources.

What is the scientific basis for resurrecting the woolly mammoth?

Colossal Biosciences identifies the Asian elephant as the mammoth's closest living relative (99.6% genetic similarity). By using comparative genomics and AI, they've identified key genes responsible for traits like cold tolerance and thick hair, which they then engineer into the Asian elephant's genome.

What genetic engineering tools does Colossal Biosciences use?

While often associated with CRISPR, Colossal uses a combination of proprietary and established tools. This includes changing individual nucleotides, knocking out genes, synthesizing and inserting DNA blocks, and pioneering multiplex editing to make thousands of edits simultaneously.

When did de-extinction technology become technically feasible?

The feasibility of de-extinction significantly increased around 2012-2015 with the discovery and refinement of CRISPR technology and related gene-editing tools like prime and base editing. Before this period, such undertakings were considered largely science fiction.

What role does Artificial Intelligence play in Colossal Biosciences' work?

AI is a necessary component, used extensively for comparative genomics and analyzing vast datasets. Colossal has also developed an internal AI tool that recommends the most accurate editing tools for specific genetic modifications, significantly shortening experimental feedback loops.

Has Colossal Biosciences successfully brought back any extinct animals in the lab?

As of the conversation, there are no pregnant Asian elephants carrying a resurrected embryo. De-extinction is described as a complex systems problem involving computational analysis, ancient DNA work, and significant engineering challenges that are still being addressed.

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Bringing Back the Mammoth: A Conversation with Ben Lamm (Episode #394)

Sam Harris

Science & Technology4 min read24 min video

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Key Moments

TL;DR

Colossal Biosciences aims to de-extinct species like woolly mammoths using advanced genetic engineering and AI, contrasting with Jurassic Park's fictional approach.

Key Insights

Colossal Biosciences is pioneering de-extinction, focusing on species like the woolly mammoth, Tasmanian tiger, and dodo.

Their scientific approach differs significantly from Jurassic Park, utilizing comparative genomics and advanced gene-editing techniques on living relatives rather than attempting to reconstruct fragmented ancient DNA.

The company leverages AI extensively for tasks ranging from comparative genomics to selecting the most efficient gene-editing tools, significantly shortening experimental feedback loops.

Resurrecting extinct species has potential benefits for ecosystem restoration, biodiversity enhancement, and the development of technologies applicable to human health.

The de-extinction process involves complex genetic engineering, including overcoming biological challenges like regulating cancer-suppressing proteins (p53) in elephant cells.

Technological advancements, particularly in CRISPR-based gene editing and computational power, have made de-extinction scientifically feasible in recent years.

FROM DIVERSE INTERESTS TO DE-EXTINCTION

Ben Lamm, CEO of Colossal Biosciences, describes his career as driven by insatiable curiosity and a systems design perspective. His past ventures spanned mobile gaming, precursors to large language models, and satellite software for defense applications. A pivotal moment came when he asked renowned biologist George Church about his lifelong dream project, to which Church replied: resurrecting the woolly mammoth. This sparked Lamm's fascination with the intersection of synthetic biology, AI, and computational biology, leading him to co-found Colossal with the ambitious goal of de-extinction and species preservation.

THE MISSION: COMBATING BIODIVERSITY LOSS

Colossal Biosciences was founded to address the alarming rate of biodiversity loss, with projections indicating a potential loss of up to 50% of biodiversity by 2050 without significant technological intervention. The company aims to develop tools and technologies for bringing back extinct species and apply these advancements to current conservation efforts, offering them globally. Additionally, the technologies developed for de-extinction have promising applications in human healthcare, creating a multi-faceted value proposition.

TARGET SPECIES: MAMMOTH, TIGER, AND DODO

Colossal has publicly announced efforts to resurrect three distinct species. The woolly mammoth, a long-standing focus for George Church, is a primary target. They are also working on the Tasmanian tiger (thylacine), which went extinct in 1936 due to human hunting. To include avian representation and acknowledge the broader extinction crisis, they are also targeting the dodo, an iconic symbol of extinction. Each species presents unique scientific challenges and ecological implications for reintroduction.

DISTINCT FROM JURASSIC PARK: CORRECTING THE RECORD

Lamm clarifies that Colossal's approach is fundamentally different from the fictional depiction in Jurassic Park. Unlike the movie's premise of extracting and reconstructing fragmented ancient DNA, often with flawed methods, Colossal focuses on comparative genomics. They identify the closest living relative (e.g., the Asian elephant for the mammoth), meticulously analyze its genome, and then use advanced gene-editing techniques to introduce specific mammoth traits into the elephant's genetic code.

THE SCIENCE: COMPARATIVE GENOMICS AND GENE EDITING

The scientific basis of Colossal's work involves extensive comparative genomics to identify key genetic differences between extinct and living species. For the mammoth, the Asian elephant is a near-relative, sharing about 99.6% of its genome. Researchers use sophisticated software and AI to pinpoint the specific genes responsible for mammoth characteristics like cold tolerance and hair. Instead of piecing together ancient DNA fragments, they engineer these identified genes into the genome of the living elephant cell.

ADVANCED GENE EDITING AND BIOLOGICAL HURDLES

Colossal utilizes a suite of advanced genetic engineering tools, not limited to CRISPR, for precise editing. This includes altering individual nucleotides, knocking out genes, and synthesizing and inserting DNA blocks. They are pioneers in multiplex editing, aiming to make numerous edits simultaneously with high efficiency. A significant biological hurdle encountered was managing the elevated p53 protein levels in elephant cells, which can trigger cell senescence. The team developed methods to regulate p53, enabling effective gene editing without compromising cell viability.

THE ROLE OF ARTIFICIAL INTELLIGENCE

Artificial intelligence is an indispensable component of Colossal's de-extinction efforts. AI is employed not only for complex comparative genomics but also for optimizing experimental processes. The company has developed internal AI tools that can predict, with over 90% accuracy, the most suitable gene-editing tool for a specific task. This significantly accelerates the research feedback loop, saving months of time and considerable resources by minimizing the use of inefficient methods or incorrect edits.

FEASIBILITY AND TECHNOLOGICAL EVOLUTION

The feasibility of de-extinction has significantly advanced, particularly since the discovery and refinement of CRISPR technology around 2012-2014. Coupled with developments in prime and base editing, and the increasing power of computational resources, these technologies have made previously theoretical concepts achievable. Lamm estimates that the current five-year window is critical for delivering on the promise of de-extinction, moving it from scientific possibility to scalable reality.

CURRENT PROGRESS AND FUTURE REINTRODUCTION

While Colossal has not yet announced the birth of a de-extinct animal, they have achieved significant milestones in the lab. De-extinction is viewed as a complex systems problem requiring advancements in computational analysis, DNA sequencing, and reproductive technologies. The ultimate goal includes reintroducing these resurrected species into their ancestral habitats to restore ecological balance and enhance biodiversity, though this phase involves considerable planning and ethical considerations.

ENVIRONMENTAL AND BUSINESS IMPLICATIONS

The business case for de-extinction extends beyond scientific curiosity. Reintroducing keystone species like the mammoth could have significant environmental benefits, such as restoring grassland ecosystems and potentially mitigating permafrost melt. The development of cutting-edge biotechnologies also creates substantial economic value. Colossal aims to balance scientific innovation, environmental impact, and financial sustainability in its ambitious endeavors.

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Common Questions

Colossal Biosciences is a company co-founded by Ben Lamm and George Church focused on de-extinction and species preservation. Their mission is to resurrect extinct species like the woolly mammoth and Tasmanian tiger, and reintroduce them into ecosystems, while also developing technologies for human healthcare and conservation.