SpudCell: The First Synthetic Cell with a Full Life Cycle
Scientists have achieved what was once thought impossible: building a synthetic cell from scratch that exhibits a complete life cycle, including feeding, dividing, and evolving across generations. This remarkable feat, undertaken by researchers at the University of Minnesota, has been named "SpudCell."
Unraveling the Synthetic Cell’s Secrets
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Construction: The team designed SpudCell by assembling a tiny bubble of lipids around a genome composed of approximately 90,000 base pairs, distributed across seven strands of DNA. This genetic material instructs 36 purified enzymes to read and translate the DNA into proteins.
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Growth and Division: Unlike natural cells that rely on internal scaffolding, SpudCell grows by fusing with feeder bubbles that provide lipids and nutrients. It divides when protein concentrations at its surface become too high, causing the membrane to rupture.
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Evolutionary Dance: One of the most intriguing aspects is its ability to evolve. By introducing a genetic modification, researchers observed natural selection in action. Cells with increased production of a key protein grew faster and left more offspring, demonstrating evolution within the synthetic system over five generations.
Breaking Boundaries and Raises Questions
This research challenges conventional notions of life’s boundaries. While some experts argue that SpudCell is not truly alive due to its dependence on external components and limited longevity, others view it as a significant step towards understanding the essence of life itself.
Key Takeaways:
- SpudCell is a testament to what can be achieved through synthetic biology, showcasing the potential for engineering cells from non-living chemicals.
- It refutes the notion that a minimal genome is required for life, as SpudCell operates with a genome of only 90,000 base pairs.
- The study raises intriguing questions about the nature of life and its definition in the context of synthetic biology advancements.