How do you make a nanoparticle that tells you where it is and helps at the same time?In this episode, we dive into the chemistry behind polydiacetylene (PDA)—a polymer that changes colour when it senses temperature, pH, or stress.Researchers combined PDA with biodegradable poly(glycerol adipate) to create self-reporting nanoparticles that:Change colour from blue to red under stress or heatTrack cells and nematodes without any added fluorescent dyesDegrade naturally via enzymatic actionCarry drugs like usnic acid for therapeutic deliveryIt’s a step toward theranostic polymers—materials that diagnose and treat simultaneously, glowing as they go. Even C. elegans joined the test, confirming safe uptake and real-time visibility.📖 Based on the research article:“Tailoring the Properties of Polydiacetylene Nanosystems for Enhanced Cell Tracking Through Poly(glycerol Adipate) Blending: an In Vitro and In Vivo Investigation”Benedetta Brugnoli, Eleni Axioti, Philippa L. Jacob, Nana A. Berfi, Lei Lei, Benoit Couturaud, Veeren M. Chauhan, Robert J. Cavanagh, Luciano Galantini, Iolanda Francolini & Vincenzo TarescoPublished in Macromolecular Chemistry and Physics (2025)🔗 https://doi.org/10.1002/macp.202500259🎧 Subscribe to the WOrM Podcast for more bright ideas in molecular sensing, smart polymers, and organism-level science.🔗 www.veerenchauhan.com

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