Life from Scratch: Kate Adamala on Spud Cells and Building Synthetic Life from Nonliving Components

Episode snapshot

In this episode of Vox Unexplainable, Kate Adamala explains how her lab is pursuing life from scratch by assembling nonliving chemicals into cell-like systems that can perform basic life-like functions. The interview covers why cells are attractive as biological factories, what makes spud cells able to feed, grow and divide, and how this work challenges our understanding of life, while highlighting safety, governance, and the potential for a future bioeconomy powered by engineered biology.

• What spud cells are and why building cells from nonliving parts matters
• The line between nonliving chemistry and living behavior, including growth and division
• Ethical and policy considerations to guard against misuse
• Ambitions for a global bioeconomy and how this research could transform materials, drugs, and fertilizers

Overview

The podcast examines synthetic biology through the lens of Kate Adamala, a synthetic biology researcher at the University of Minnesota. The conversation centers on her team’s work to build cells from nonliving chemical components that can perform some life-like functions such as feeding, growth, and division. Adamala argues that natural cells carry evolutionary baggage that limits what they can do, so engineering cells from scratch using nonliving inputs could offer a more flexible, sustainable path to producing materials, drugs, and chemicals for civilization.

What spud cells are and why they matter

Adamala describes spud cells as chemical assemblies that resemble cells in function but not in origin. By combining nonliving chemicals in a precise way, these constructs can feed, grow, and even compartmentalize processes. The genome-encoded proteins on membranes drive division, a process distinct from how natural cells reproduce. The term spud cell is used to emphasize the concept of a simple, testable artificial cell that demonstrates the possibility of life-like behavior using nonliving building blocks. The broader aim is to establish a platform for fermentation-based production of polymers, drugs, fertilizers, and other materials with potentially lower environmental impact than petrochemical routes.

Why build cells from nonliving components

The argument is that biological systems evolved under constraints and trade-offs that limit their capacity to produce certain products. By designing cells from nonliving components, researchers hope to bypass those constraints, enabling the production of everything from plastics to high-value chemicals. Fermentation is highlighted as a fundamental process at the heart of this approach, offering a route to sustainable manufacturing that may reduce reliance on petrochemicals.

Defining life and the role of the lab

The discussion touches on the ambiguities of defining life. Adamala notes NASA’s working definition of life as a self-replicating chemical system capable of Darwinian evolution, and she argues that spud cells occupy a gray area—exhibiting life-like traits without full robustness or autonomous adaptability. The lab treats these systems as a platform for understanding life in a controllable, observable way, enabling clearer investigation into what constitutes living matter.

Ethics, safety, and governance

Dual-use risk is a recurring theme. The researchers are actively embedding safeguards and pursuing policy engagement to minimize misuse while ensuring accessible benefits. The analogy to AI safety is used to frame these concerns, underscoring the need for responsible development and governance as the technology matures.

Next steps and the long arc

The project is framed as a long-term endeavor that could take decades to translate into a full bioeconomy. Adamala emphasizes the need to improve robustness, environmental resilience, and regulatory frameworks, while expanding the types of production the spud cells can support. The hope is to move toward a future where biology plays a central role in producing materials, medicines, and chemicals with greater sustainability and fewer ecological costs.

Closing thoughts

Overall, the podcast portrays synthetic biology as a frontier with profound scientific and societal implications, one that requires careful stewardship, interdisciplinary collaboration, and thoughtful policy to realize its potential for good.