Scientists create prototype self-replicating cell using 36 bacterial genes

A research team led by the J. Craig Venter Institute has announced the creation of a prototype cell that can partially replicate itself using a set of 36 genes taken from existing bacteria. The construct, described as a “synthetic minimal cell,” incorporates a streamlined genetic circuit that drives the production of essential proteins and the assembly of new cell membranes, allowing it to divide under laboratory conditions. While the system can generate daughter cells that inherit the engineered genome, it lacks the full complement of metabolic pathways required for independent growth and therefore does not meet the conventional definition of a living organism.

The development builds on earlier work that synthesized a complete bacterial genome and transplanted it into a host cell, a milestone achieved in 2010. By focusing on a reduced gene set, the researchers aimed to identify the minimal genetic toolkit necessary for cellular replication. Experiments demonstrated that the prototype can undergo several rounds of division when supplied with external nutrients and energy sources, but it remains dependent on a supportive environment and cannot sustain itself without continual laboratory intervention. The team used advanced gene synthesis, genome editing, and lipid vesicle technology to assemble the cell-like structure and monitor its replication dynamics.

Scientists view the achievement as a step toward understanding the fundamental requirements for life and a platform for engineering custom microorganisms for biotechnology applications. Future work will seek to integrate additional metabolic functions, reduce external dependencies, and test the robustness of the system in more complex settings. If successful, such engineered cells could serve as chassis for sustainable production of chemicals, pharmaceuticals, and biofuels, while also informing debates about the definition and origins of life.