ArticleJournal of nanobiotechnology2026
T7 peptide-engineered liposomal Irisin mitigates PND progression through AMPK/PGC-1α signaling: multi-omic evidence of metabolic and epigenetic modulation.
Article in Journal of nanobiotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study explored the molecular mechanisms by which T7 peptide-modified liposomal irisin (T7@Lipo@Irisin) alleviates perioperative neurocognitive disorders (PND) via regulation of the AMPK/PGC-1α metabolic pathway. T7@Lipo@Irisin nanoparticles were prepared by thin-film hydration and ultrasonic dispersion and showed favorable physicochemical performance, with an encapsulation efficiency of approximately 85%. Serum analysis of healthy donors (n = 10) and PND patients (n = 6) showed higher IL-6 and TNF-α and lower brain-derived neurotrophic factor (BDNF) in PND. In vitro, T7@Lipo@Irisin restored mitochondrial membrane potential, reduced reactive oxygen species (ROS) accumulation, enhanced Neuro-2a hippocampal neuron viability, and activated the AMPK/PGC-1α axis under oxidative stress. In a PND mouse model, it improved Garcia neurological scores, preserved neuronal morphology, and decreased apoptosis. Multi-omic integration of scATAC-seq/scRNA-seq and TMT-based proteomics demonstrated enhanced neuro-glial crosstalk, epigenetic activation of metabolic/antioxidant genes (e.g., Sirt1, Nfe2l2), and upregulated pathways (mitochondrial function, NAD-dependent metabolism, synaptic homeostasis). Proteomics confirmed upregulation of SIRT1, NDUFS2, and BDNF, forming a network linked to energy metabolism and neural repair. Collectively, T7@Lipo@Irisin mitigates PND by activating AMPK/PGC-1α to enhance mitochondrial function and stabilize the neuro-microenvironment.
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