**Synthetic Cell Marks New Step Toward Artificial Life – Researchers**
In a significant advancement in synthetic biology, scientists at the University of Minnesota have developed a synthetic cell capable of exhibiting behaviors typically associated with living organisms. This lab-created entity, named SpudCell, is constructed from non-living chemical components and can feed, grow, replicate its DNA, and divide, though it is not classified as a living organism.
The research team unveiled their findings on Wednesday, with Kate Adamala, a synthetic biologist and professor at the university, leading the project. Adamala described SpudCell as an “incredibly wimpy organism” that primarily performs basic functions such as “eating and occasionally making a daughter cell.” Despite its limitations, she emphasized that the synthetic cell serves as “proof of principle,” showcasing that molecules can replicate behaviors previously attributed only to natural living cells.
SpudCell is composed of 36 purified enzymes and features a genome that spans 90,000 base pairs across multiple DNA molecules, all encased within a lipid membrane. The cells operate in a nutrient-rich chemical environment, growing by merging with small ‘feeder liposomes’ that provide essential nutrients, enzymes, and ribosomes necessary for protein synthesis. The genome within SpudCells contains instructions for DNA replication and cellular division.
However, the synthetic cell's capabilities are still constrained. SpudCells rely on external supplies for their functions, lack the ability to construct their own ribosomes, do not regulate their metabolism, and often misallocate DNA during division. Additionally, the cells typically cease functioning after several generations, highlighting the challenges that remain in the quest for synthetic life.
The development of SpudCell is part of a broader trend in synthetic biology, where researchers have been striving to create artificial life forms for decades. Notably, in 2010, US geneticist Craig Venter and his team introduced what was then considered the first cell controlled by a laboratory-made genome, achieved by transplanting synthetic DNA into a bacterium. Concurrently, Russian scientists have explored synthetic life through genome transplantation and reduction in Mycoplasma bacteria, aiming to determine the minimum gene set required for a self-sustaining cell.
The name "SpudCell" was chosen by Adamala partly to avoid personal attribution and as a nod to Sputnik, the Soviet satellite that marked the dawn of the space age in 1957. This reflects the researchers' intent to make a significant impact in the field of synthetic biology, akin to the historical significance of space exploration.
While SpudCell is not yet a fully autonomous living organism, its development represents a crucial step in understanding the fundamental principles of life and the potential for creating synthetic life forms in the future. Researchers believe that by dissecting and reconstructing biological systems from known components, they can gain deeper insights into the workings of life itself.
As the field of synthetic biology continues to evolve, the implications of creating synthetic cells could extend beyond academic research, potentially leading to innovations in medicine, biotechnology, and environmental science. The work on SpudCell may pave the way for future breakthroughs in artificial life, offering new avenues for exploration in the quest to understand the essence of life and its underlying mechanisms.