What is 'SpudCell'? Arguably the greatest bioengineering feat yet
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- Kate Adamala's team at the University of Minnesota built "SpudCell," a synthetic cell assembled from just 36 genes that can copy its DNA and divide approximately five times before collapsing — more than any prior synthetic-cell effort has achieved.
- The cell's genome is split across 7 circular DNA pieces drawn mostly from E. coli, with added genes from bacteriophages and one jellyfish fluorescent-protein gene — a bottom-up approach that contrasts with 2016 work that top-down stripped a 901-gene bacterium down to 493.
- SpudCells cannot make their own ribosomes and must be spoon-fed DNA/protein building blocks and large proteins delivered via small bubbles; Adamala told New Scientist the ribosome shortfall is the team's leading guess for why division stalls at ~5 rounds, and called self-made ribosomes "achievable very soon."
- The project is being made open source so outside groups can push it toward indefinite self-division.
- Adamala frames the end goal as engineering synthetic cells that can survive the toxic petrochemical precursors that would kill normal cells, enabling biology-based production of plastics and pesticides without oil.
- By Adamala's own definition — indefinite replication plus spontaneous Darwinian evolution — SpudCell is not yet "alive" and couldn't survive outside a lab, making biosafety risk effectively nil.
Why it matters: SpudCell is the first synthetic cell built bottom-up from only 36 genes that can copy DNA and divide at all, putting it ahead of every prior minimal-cell project; if the open-source community delivers indefinite self-division (Adamala's stated next milestone, centered on getting the cell to build its own ribosomes), it would unlock customizable cell chassis for petrochemical-free manufacturing of plastics and pesticides that are toxic to natural cells.
