University of Minnesota Develops Advanced Synthetic Cells
Scientists at the University of Minnesota have announced the creation of highly life-like synthetic cells. These lab-engineered systems are constructed entirely from nonliving materials and possess the ability to grow, replicate genetic material, and divide. Surprisingly, they can also pass on favorable traits to subsequent generations.
The research team views this achievement as a significant advancement toward the goal of artificial life. However, it’s important to note that these synthetic cells are not capable of surviving outside the controlled environment of a lab. They depend on supplied nutrients and specific components for their growth and division.
The findings are currently available as a preprint on bioRxiv, indicating that they haven’t undergone peer review yet.
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The researchers expressed their ambition, stating that one of the prime objectives in bioengineering is to build biochemical systems that could blur the line between chemistry and life. According to them, this study demonstrates “the first minimal cell with a cell cycle, genetically encoded growth and division, all coupled to selection and competition.”
This innovation, dubbed “SpudCells,” differs from previous methods that utilized living organisms, as it was formed solely from chemically defined, abiotic components.
Equipped with a genome containing 90,000 base pairs, the synthetic cell is able to produce proteins, replicate DNA, and nourish itself, ultimately leading to growth and division into daughter cells.
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The researchers manipulated genetic mutations, resulting in some synthetic cells growing faster than others. In subsequent generations, these quicker-growing cells yielded more offspring, illustrating a basic principle of natural selection.
This significant work is regarded as “an important milestone toward creating synthetic life,” potentially laying the groundwork for entirely artificial organisms intended for biotechnological purposes.
Still, the team acknowledged the limitations of their system, noting it operates far below the capabilities of even the simplest living cells. Currently, the synthetic cells cannot thrive outside of lab conditions, demand external nutrients, and rely on ribosomes extracted from E. coli. After five generations, only around 30% of the daughter cells had claimed the full synthetic genome.
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Despite these challenges, the researchers believe their work indicates that many characteristics of life can indeed be replicated from nonliving materials.
They also pointed out that as synthetic cells become more advanced, they could introduce new considerations regarding biosafety and biosecurity.
The research team intends to enhance the self-sufficiency of synthetic cells in future studies. This might involve enabling the cells to reproduce more of their own molecular machinery, refining the distribution of the genome during division, and allowing natural mutations to occur instead of being artificially introduced.
“This project marks an important milestone in the evolution of synthetic cells,” the authors concluded, emphasizing the growing need for safety and security frameworks in future synthetic cell engineering.
