In a breakthrough that blurs the line between biology and manufacturing, researchers at the University of California, San Francisco (UCSF) have demonstrated that living cells can be programmed to fold into three-dimensional structures such as bowls, coils, and ripples. The work, led by senior author Zev Gartner of the Center for Cellular Construction, harnesses the natural mechanical activity of cells to shape tissues, a process that mirrors embryonic development.
The team used a technique called DNA-programmed assembly of cells (DPAC), a precision 3D cell-patterning technology. By applying this method to active cells derived from both mice and humans, they created a tissue template capable of folding itself in ways that occur organically during development. The findings were reported by the UCSF team, with first author Alex Hughes, a postdoctoral fellow, emphasizing that this approach breaks down complex developmental processes into simpler engineering principles that can be repurposed.
“Development is starting to become a canvas for engineering,” Gartner said in a statement. “By breaking the complexity of development down into simpler engineering principles, scientists are beginning to better understand, and ultimately control, the fundamental biology.” He added that the intrinsic ability of mechanically active cells to promote changes in tissue shape offers a robust platform for building functional synthetic tissues.
The researchers developed simple computational models to predict how the cells would behave, including their folding patterns and tissue development. To their surprise, the cells followed the predictions closely, enabling the team to construct living shapes based on developmental folding behaviors. This predictive capability is a key step toward making tissue engineering more reliable and programmable.
From Development to Engineering
Hughes noted that this work represents “a totally new angle in tissue engineering,” as it treats natural developmental processes as a set of engineering principles that can be reused. The team’s success in predicting cell behavior suggests that the underlying biology is more tractable than previously thought, potentially accelerating the design of complex tissues.
Looking ahead, the researchers plan to combine the developmental basis of folding with other methods of controlling tissue patterns and differentiation. They also aim to understand how cells respond to mechanical changes during folding, which could inform future therapies and tissue regeneration strategies.
Potential Applications and Implications
While the immediate applications are primarily in research, the ability to program biological materials into three-dimensional shapes raises possibilities for soft robotics and cybernetic systems. The fields of soft robots and cybernetic organisms are advancing rapidly, and integrating biological components could lead to novel devices. However, the researchers caution that commercial applications remain speculative at this stage.
The study underscores a broader trend: as humans increasingly integrate technology into their bodies, machines are incorporating more biological elements. This convergence may eventually lead to new classes of materials and devices that are partly alive, though significant technical hurdles remain.
For now, the UCSF team’s work provides a foundation for understanding how mechanical forces shape tissues, offering a new lens on developmental biology and tissue engineering.
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