The future of cell-free biotechnology

In this episode of The Future of Everything, host Russ Altman interviews Mike Jewett, a professor of bioengineering and chemical engineering at Stanford University, about the transformative potential of cell-free biotechnology. Jewett explains that instead of relying on living cells to produce medicines, vaccines, and biofuels—processes that require massive, expensive fermentation vats—he and his team use the internal components of cells, stripped of their membranes and life-support systems, as molecular factories. This approach eliminates the 'evolutionary baggage' of living cells, such as their need to grow, replicate, and repair themselves, which often conflicts with engineering goals like maximizing drug production. The result is a more efficient, scalable, and decentralized system that can produce medicines with just a few drops of water—ideal for global health applications, especially in regions without refrigeration infrastructure. The episode highlights real-world applications, including rapid, low-cost diagnostics for contaminated water using engineered biosensors that change color in the presence of lead, and the use of machine learning to accelerate protein engineering. Jewett emphasizes that cell-free systems unlock new possibilities for exploring protein function and designing novel biological tools, marking a paradigm shift in biotechnology.