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Photochemical synthesis of natural lipids in artificial and living cells

Author

Listed:
  • Peng Ji

    (University of California, San Diego)

  • Alexander Harjung

    (University of California, San Diego)

  • Caroline H. Knittel

    (University of California, San Diego)

  • Alessandro Fracassi

    (University of California, San Diego)

  • Jiyue Chen

    (University of California, San Diego)

  • Roberto J. Brea

    (University of California, San Diego)

  • Neal K. Devaraj

    (University of California, San Diego)

Abstract

Lipid synthesis plays a central role in cell structure, signaling, and metabolism. A general method for the abiogenesis of natural lipids could transform the development of lifelike artificial cells and unlock new ways to explore lipid functions in living cells. Here, we demonstrate the abiotic formation of natural lipids in water using visible-light-driven photoredox chemistry. Radical-mediated coupling of hydrocarbon tails to polar single-chain precursors yields lipids identical to those enzymatically formed. Spatiotemporally controlled lipid generation promotes de novo vesicle formation, growth, and division. Lipid synthesis can be driven by RNA aptamers that specifically bind and activate photocatalysts, establishing a direct link between abiotic lipid metabolism and nucleic acid sequence. Light-mediated assembly of bioactive lipids can take place in living cells, triggering signaling events such as apoptosis and protein kinase C (PKC) activation. Our finding that photochemical lipid synthesis can be driven by simple genetic elements could be the starting point for developing protocells capable of Darwinian evolution. Additionally, the ability to generate specific membrane lipids in living cells with precise spatiotemporal control will advance studies on how lipid structure influences cellular function.

Suggested Citation

  • Peng Ji & Alexander Harjung & Caroline H. Knittel & Alessandro Fracassi & Jiyue Chen & Roberto J. Brea & Neal K. Devaraj, 2025. "Photochemical synthesis of natural lipids in artificial and living cells," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-60358-4
    DOI: 10.1038/s41467-025-60358-4
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    References listed on IDEAS

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