Scientists Report Building Synthetic Cell ‘SpudCell’ with 90kbp Genome from Scratch, Capable of Growth and Replication

July 5, 2026

Science Alert (citing Cell) International

Overview

Scientists announced they have successfully built a synthetic cell, “SpudCell,” from scratch, capable of growth and replication. This cell possesses a remarkably small 90kbp genome, suggesting that fewer genetic instructions than previously thought may be sufficient for basic life functions. Although the research is not yet formally peer-reviewed, some Cell reviewers have expressed skepticism, calling it “not real biology,” raising debate about the limits and possibilities of synthetic biology.

In Depth

Key Findings

Scientists have announced the successful construction of a completely synthetic cell, dubbed “SpudCell,” from the ground up, capable of both growth and replication. This landmark achievement suggests that a genome as small as 90 kilobase pairs (kbp) can sustain the fundamental functions of life, prompting a re-evaluation of our conventional understanding of the minimal requirements for life.

Technical & Research Details

Construction of Synthetic Cell: The research team built cells that mimic living processes using a meticulously designed minimal set of synthetic genes and membrane components, rather than repurposing existing biological components. This process involved synthesizing DNA, constructing protein expression systems, and encapsulating these within a lipid membrane to create autonomously functioning units.
Genome Minimization: SpudCell possesses a genome of just 90 kbp, significantly smaller than the genomes of even the simplest known natural organisms. This is the result of a stringent selection process, incorporating only the essential genes required for cell survival and replication. The design of this “minimal genome” is crucial for identifying the fundamental elements necessary for basic metabolic pathways, gene expression, and cell division.
Growth and Replication Capability: The constructed synthetic cells demonstrated stable growth in nutrient media and, crucially, the ability to self-replicate through cell division. This means they are not merely mimicking biological structures but possess the core characteristic of self-propagation, central to the definition of life.
Reaction from the Scientific Community: While this research has garnered significant attention for its innovation, some reviewers for the journal Cell have expressed cautious opinions, stating it’s “not real biology.” This indicates an active debate within the scientific community regarding whether synthetic cells possess the same complex interactions and environmental responsiveness as natural cells, and indeed, about the very definition of “life” itself.

Background & Industry Context

Synthetic biology is an emerging field that aims to design and construct artificial biological systems to deepen our understanding of living systems and for applications in pharmaceutical production, biofuels, and new material development. The construction of synthetic cells holds potential not only for fundamental scientific questions about the origin of life but also for applications such as life support systems in space environments, self-repairing materials, or targeted drug delivery systems.

Future Outlook

The creation of SpudCell marks a significant milestone in the field of synthetic biology, offering profound insights into the minimal requirements for life and the potential for artificial life. While this technology is still in its early stages, future applications could include designing microbes with specific functions, closed-loop life support systems in space, environmental remediation, and even on-demand manufacturing of pharmaceuticals and materials in space. The ongoing debate surrounding this research will not only advance scientific understanding but also deepen discussions on bioethics and societal implications.

Source: https://www.sciencealert.com/for-the-first-time-scientists-say-theyve-built-a-synthetic-cell-from-scratch

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