Researchers at the University of Minnesota have developed “SpudCell,” a synthetic cell that can grow, divide, and pass traits to offspring, marking a significant step toward artificial life.
Scientists at the University of Minnesota have announced the creation of “SpudCell,” the most life-like synthetic cell to date. This laboratory-engineered system is constructed entirely from nonliving components and is capable of growing, replicating its genetic material, dividing, and even passing beneficial traits to future generations.
The researchers describe their work as a major advancement in the quest to build artificial life. However, they note that these synthetic cells cannot survive outside of carefully controlled laboratory environments and require external nutrients and specialized components for growth and division. Their findings were published as a preprint on bioRxiv, indicating that the research has not yet undergone peer review.
“One of the most ambitious and fascinating goals of bioengineering is to build a biochemical system that could cross the threshold from chemistry to life,” the researchers stated. They emphasized that their work demonstrates “the first minimal cell with a cell cycle, genetically encoded growth and division, all coupled to selection and competition.”
SpudCell distinguishes itself from earlier synthetic cell models by being assembled from chemically defined, nonliving components rather than starting with living organisms. Its genome, comprising 90,000 base pairs, enables the synthetic cell to produce proteins, replicate its DNA, feed, grow, and divide into daughter cells.
In an innovative twist, the researchers introduced a genetic mutation that allowed some synthetic cells to grow faster than others. Over several generations, these faster-growing cells produced more offspring, becoming increasingly prevalent in the population and demonstrating a basic form of natural selection.
The team believes their work represents “key milestones towards the construction of synthetic life” and could eventually lay the groundwork for “fully artificial organisms” designed for various biotechnology applications. Despite this progress, the researchers acknowledge that SpudCell remains significantly less capable than even the simplest living cells.
Currently, the synthetic cells cannot survive outside laboratory conditions, depend on externally supplied nutrients, and utilize ribosomes purified from E. coli bacteria. After five generations, only about 30% of the daughter cells inherited the complete synthetic genome, highlighting the limitations of the current system.
These constraints indicate that the research has not yet achieved the creation of self-sustaining artificial life. Nonetheless, the findings suggest that many defining characteristics of life can be recreated from nonliving materials.
The researchers also pointed out that the development of increasingly sophisticated synthetic cells could raise new biosafety and biosecurity concerns. They emphasized the importance of establishing a safety and security framework for future synthetic cell engineering.
“This project offers a significant milestone towards the evolvability of synthetic cells, making it more likely that more robust, autonomous systems will be available soon,” the authors noted. They added that their progress underscores the urgent need for a comprehensive safety and security framework as synthetic cell technology advances.
Looking ahead, the researchers plan to focus on enhancing the self-sufficiency of synthetic cells by enabling them to regenerate more of their own molecular machinery, improving the distribution of genomes during cell division, and allowing mutations to arise naturally rather than being artificially introduced.
As the field of synthetic biology continues to evolve, the implications of this research could be profound, potentially paving the way for new biotechnological applications while also necessitating careful consideration of the ethical and safety challenges that accompany such advancements.
According to Fox News, the University of Minnesota research team is poised to make significant contributions to the future of synthetic biology.