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,” which they describe as the most life-like synthetic cell to date. This laboratory-engineered system is composed entirely of nonliving components and is capable of growth, replication of genetic material, division, and even the transmission of beneficial traits to future generations.
The researchers regard 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 depend on externally supplied 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 linked to selection and competition.
The synthetic cell, SpudCell, distinguishes itself from previous efforts by being assembled from chemically defined, nonliving components rather than starting with living organisms. Its genome, consisting of 90,000 base pairs, allows the synthetic cell to produce proteins, replicate its DNA, feed, grow, and divide into daughter cells.
In an interesting development, the researchers introduced a genetic mutation that enabled some synthetic cells to grow faster than others. Over several generations, these faster-growing cells produced more offspring, becoming increasingly prevalent in the population. This phenomenon illustrates a basic form of natural selection at work.
The research team believes their work represents key milestones toward the construction of synthetic life and could eventually lay the groundwork for fully artificial organisms designed for various biotechnology applications. Nonetheless, they acknowledged that the current system is significantly less capable than even the simplest living cells.
Currently, the synthetic cells are unable to survive outside of laboratory conditions, require external nutrients, and depend on ribosomes purified from E. coli bacteria. After five generations, researchers found that only about 30% of the daughter cells inherited the complete synthetic genome.
Despite these limitations, the researchers assert that their findings demonstrate the potential to recreate many defining characteristics of life using nonliving materials. However, they also recognize that the development of increasingly sophisticated synthetic cells could raise new biosafety and biosecurity concerns.
The authors of the study noted, “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.” They added that this progress underscores the urgent need to establish a safety and security framework for future synthetic cell engineering.
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. They also aim to improve the distribution of genomes during cell division and to allow mutations to arise naturally, rather than being artificially introduced by researchers.
As the field of synthetic biology continues to advance, the implications of such research could be profound, potentially transforming our understanding of life itself and leading to innovative applications in biotechnology.
According to Fox News, the University of Minnesota research team is poised to explore these exciting developments further.