Researchers at the University of Minnesota have constructed an artificial cell system, dubbed "Spud Cells," capable of limited self-division. These engineered cells encapsulate genetic material and can import necessary components from their environment. While requiring significant external support, the Spud Cells demonstrate a rudimentary form of life cycle, offering insights into cellular origins.

The Spud Cells utilize viral components for DNA replication and protein synthesis, with purified translation machinery supplied externally. A key challenge addressed was feeding the cells; they import small molecules through pore proteins. Larger components, including translation machinery, are delivered via separate membrane-bound "food" packets that fuse with the Spud Cell, enabling growth and membrane expansion.

Physical manipulation and chemical triggers were used to induce division, splitting the cells into a few generations. However, genetic material distribution was random, leading to progressive genome loss. After about five generations, the cells ceased to function, but researchers observed that altered pore protein levels allowed for faster growth and survival in resource-scarce conditions, indicating natural selection at play.

This work, while highly artificial and reliant on evolved proteins, provides a useful analog for studying early life. It allows exploration of questions regarding genetic material distribution and the evolution of cellular structures, even if it doesn't precisely mirror primitive Earth cells.