Cell-membrane-cloaked oil nanosponges enable dual-modal detoxification

Summary

This preclinical detoxification study combines two scavenging mechanisms in one biomimetic particle to address organophosphate poisons that lack adequate antidotes. The construct consists of an olive-oil nanodroplet enclosed by red-blood-cell membrane. Its oil core nonspecifically partitions hydrophobic toxicants, while the membrane shell provides biological binding sites that can capture and neutralize harmful agents through a separate mode. The investigators evaluated this dual function with paraoxon, diisopropyl fluorophosphate, and dichlorvos, three organophosphates that inhibit acetylcholinesterase and can cause severe neuromuscular toxicity. In mouse poisoning models, the oil nanosponges reduced clinical signs, lowered toxicant concentrations in tissues, and markedly increased survival when used either after exposure or prophylactically. The principal finding is that physical absorption by a synthetic oil phase and biological sequestration by a natural membrane can operate together to improve detoxification across several related chemicals. Its significance is a prototype for multimodal nanoscavengers that do not depend on one narrowly defined antidote mechanism. The abstract does not provide dosing windows, quantitative survival, comparison with standard emergency treatments, toxicant-release risk, pharmacokinetics, or comprehensive safety data.