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Mesaconate-Based Polyester Nanoparticles Reveal How Metabolite Isomerism Shapes Polymer Behavior, Macrophage Reprogramming, and Systemic Immunomodulation

Metabolite-based polymer nanoparticles can transform endogenous immunometabolites into intrinsically bioactive materials, yet most platforms have focused on itaconate or soluble metabolite analogs. Mesaconate is a downstream itaconate-derived immunometabolite with distinct metabolic activity, but its potential as an engineerable material building block remains largely unexplored. Here, mesaconic…

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