Chinese Scientists Achieve First Asymmetric Division of Artificial Cells
Chinese researchers have achieved a groundbreaking milestone in synthetic biology, creating artificial cells capable of asymmetric division — splitting into two morphologically and functionally distinct daughter cells for the first time. The breakthrough, published in the journal Nature, overcomes a long-standing challenge in the field and opens new possibilities for biomanufacturing, biomedicine, and our understanding of life’s origins.
The Breakthrough
Led by Prof. Qiao Yan and Prof. Wang Shu at the Institute of Chemistry, Chinese Academy of Sciences (CAS), the international team — including collaborators from Beijing University of Chemical Technology and the University of Bristol — developed a novel strategy to induce asymmetric division in artificial cells. The co-first authors are Meng He and Jia Liyan from the Institute of Chemistry, with Prof. Lin Yiyang and Prof. Stephen Mann also serving as corresponding authors.
The team constructed multilamellar liquid-crystal droplets as rudimentary models of artificial cells. These droplets feature an onion-like highly ordered multilayer structure with minor internal defects — a critical architectural feature that provides the structural foundation for asymmetric division. Upon exposure to alkaline phosphatase or metal ions, these droplets underwent spontaneous asymmetric division, splitting into a daughter droplet (retaining the multilamellar liquid crystal structure) and a daughter vesicle (a water-containing multilamellar structure) with distinct structural and functional properties.
According to China Daily, the research marks “a major advance in synthetic life research.” The findings were published in Nature on May 13, 2026, in a paper titled “Asymmetric splitting in dividing lipid-nucleotide multilamellar droplets.”
Previous Research Context
The Qiao Yan group at the Institute of Chemistry has been at the forefront of artificial cell research, with a series of publications in top journals including Nature Chemistry (2024, 2025), Nature Communications (2025), and the Journal of the American Chemical Society (2025). Their work has focused on coacervate-based protocell networks, MOF-based porous membranes, and other biomimetic systems.
Natural cells can divide symmetrically (producing identical daughter cells) or asymmetrically (producing different daughter cells). Asymmetric division is fundamental to cellular differentiation, development, and functional diversification. Previous artificial cell research had achieved symmetric division through various mechanisms — thermal gradients, osmotic pressure, and chemical reactions — but asymmetric division remained elusive. The challenge lay in the fact that artificial cells lack the complex internal structural boundaries and topological defects found in natural cells, making it difficult to achieve “one becomes two, and the two are different.”
How It Works
The researchers developed what they describe as a “peeling-off” asymmetric division mechanism. When alkaline phosphatase was added to the artificial cells, it first “gnawed” a small pit approximately one micrometer wide and two micrometers deep on the droplet surface. As the enzyme continued acting, the pit expanded circumferentially, forming a clear core-shell interface. When the opening angle exceeded approximately 80 degrees, the core was completely “squeezed out” while the shell automatically closed to form a multilamellar vesicle.
This process is fundamentally different from traditional symmetric division mechanisms. The team’s strategy relies on transient chemical heterogeneity and interfacial energy gradients — a localized chemical disturbance that triggers a complete structural reorganization.
The asymmetric division could also be triggered by multiple mechanisms, including multivalent cations (magnesium, calcium) regulating electrostatic interactions, pH reduction promoting ATP protonation, and replacement of ATP with other nucleoside triphosphates. This versatility suggests the mechanism has broad applicability.
Why Asymmetric Division Matters
Asymmetric division is a fundamental process in living systems that drives cellular differentiation, tissue development, and functional specialization. In nature, a stem cell divides asymmetrically to produce one stem cell and one differentiated cell — a process essential for development and regeneration.
Previous artificial cell research had achieved symmetric division through various mechanisms such as thermal gradients, osmotic pressure, and chemical reactions. However, asymmetric division — producing two different daughter cells — had remained elusive. The Chinese Academy of Sciences noted that reproducing this behavior in artificial cells had long been considered a major challenge because of the difficulty in generating and maintaining symmetry breaking in artificial cell systems.
Functional Differentiation and Intergenerational Transfer
The research demonstrated that functional biomolecules encapsulated in the parent cell were effectively distributed to both daughter cells while maintaining good activity. Notably, the two daughter cells showed behavioral differences: the shell-derived daughter was relatively loose, gradually releasing internal biomolecules, while the core-inheriting daughter had stronger material retention capacity.
Prof. Qiao Yan explained the significance: “The realization of asymmetric division is expected to advance the development of artificial cells with life-like properties, enabling functional differentiation and the inheritance of distinct properties across generations of progeny cells.”
Expert Reactions
A Nature reviewer commented that the paper’s authors “have discovered an extraordinary dynamic transition in a simple soft matter system that will arouse strong interest in multiple interdisciplinary fields including lipid self-assembly, non-equilibrium chemistry, and artificial cell research.”
Prof. Wang Shu highlighted the broader implications: “With the continuous cross-development of fields such as chemistry, materials science, and synthetic biology, humanity is getting closer to ‘building from scratch’ artificial cell systems with basic life characteristics. This not only promises to deepen our understanding of the origin and evolution of life but also shows broad application prospects in biomanufacturing, biomedicine, intelligent biosensing, and new functional material development.”
What’s Next
The research team acknowledged that current artificial cells are still unable to undergo continuous division and stable propagation in the way natural cells do. In the next phase, the researchers will explore strategies to equip artificial cells with multi-generational proliferation capabilities resembling those of living systems, while integrating functional modules such as gene expression and metabolic networks.
Several key challenges remain before this technology can move from laboratory demonstration to practical applications. These include achieving multi-generational proliferation — enabling artificial cells to divide repeatedly and stably like natural cells — and integrating the asymmetric division mechanism with gene expression and metabolic reaction modules. Scaling up the system for practical applications in biomanufacturing, biomedicine, and biosensing also lies ahead.
Significance and Forward Look
This breakthrough represents a significant step toward the bottom-up construction of artificial cell systems with life-like properties. As the Institute of Chemistry, CAS stated, the research “not only offers a new experimental model for understanding the emergence of life-like functions, but also lays an important foundation for constructing sophisticated artificial cell systems capable of autonomous proliferation, differentiation, and evolution.”
The paper, titled “Asymmetric splitting in dividing lipid-nucleotide multilamellar droplets,” was published in Nature on May 13, 2026 (Volume 653, pages 418–424). The research was supported by the National Natural Science Foundation of China, the Chinese Academy of Sciences, and the Beijing National Laboratory for Molecular Sciences.
For the field of synthetic biology, this achievement brings humanity closer to the goal of “building from scratch” artificial cell systems with basic life characteristics — a pursuit that promises to deepen our understanding of the origin and evolution of life while opening new frontiers in biotechnology.