Synthetic multistability in mammalian cells.

多稳态 细胞生物学 生物 化学 生物物理学
作者
Ronghui Zhu,Jesus M Del Rio-Salgado,Jordi Garcia-Ojalvo,Michael B. Elowitz
出处
期刊:Science [American Association for the Advancement of Science (AAAS)]
卷期号:375 (6578): eabg9765-eabg9765 被引量:1
标识
DOI:10.1126/science.abg9765
摘要

In multicellular organisms, gene regulatory circuits generate thousands of molecularly distinct, mitotically heritable states through the property of multistability. Designing synthetic multistable circuits would provide insight into natural cell fate control circuit architectures and would allow engineering of multicellular programs that require interactions among distinct cell types. We created MultiFate, a naturally inspired, synthetic circuit that supports long-term, controllable, and expandable multistability in mammalian cells. MultiFate uses engineered zinc finger transcription factors that transcriptionally self-activate as homodimers and mutually inhibit one another through heterodimerization. Using a model-based design, we engineered MultiFate circuits that generate as many as seven states, each stable for at least 18 days. MultiFate permits controlled state switching and modulation of state stability through external inputs and can be expanded with additional transcription factors. These results provide a foundation for engineering multicellular behaviors in mammalian cells.
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