TargetGAN: A generative AI framework for designing plant core promoters with targeted activity.
Xiang X, Yao Q, Deng K, Ge Y, Xiong Q
Synthetic Biology
PubMedCrops engineered with these AI-designed genetic switches could be dialed up to resist drought, pests, or disease at intensities nature never achieved — meaning the food on your plate may soon come from plants built with tools more powerful than evolution itself.
Every gene in a plant has a tiny 'on switch' that controls how loudly that gene speaks inside the cell. Until now, plant breeders were limited to on switches found in nature, which only cover a narrow range of volumes. This team used AI to invent completely new switches from scratch — and the best one cranks the volume 128 times higher than the strongest standard switch researchers normally rely on. That means scientists could one day build crops that produce much more of a desired protein, whether for nutrition, disease resistance, or drought survival.
Key Findings
29 out of 2,909 validated AI-generated synthetic promoters exceeded the activity of all tested natural promoters, proving synthetic designs can transcend natural limits.
The top synthetic candidate, SP1482, achieved 128-fold higher gene expression than the widely used 35S minimal promoter benchmark.
The TargetGAN framework — trained on 76,851 natural promoters — can generate promoters targeting user-specified activity levels, with moderate predictive accuracy (correlation of 0.64 between predicted and measured activity).
chevron_right Technical Summary
Scientists used a generative AI system called TargetGAN to invent artificial gene switches for plants that are far more powerful than anything found in nature. The best synthetic switch boosted gene activity 128-fold compared to a standard benchmark, opening new possibilities for precisely engineering crop traits.
Abstract Preview
Plant core promoters (PCPs) are key genetic elements controlling gene expression, holding significant value for crop breeding and plant synthetic biology. However, natural promoters (NPs) are const...
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