PT - JOURNAL ARTICLE AU - Sung, Junsik J. AU - Shaw, Jacob R. AU - Rezende, Josie D. AU - Dharmaraj, Shruti AU - Cottingham, Andrea L. AU - Weldemariam, Mehari M. AU - Jones, Jace W. AU - Kane, Maureen A. AU - Pearson, Ryan M. TI - Lipid Nanoparticles from <em>L. meyenii</em> Walp Mitigate Sepsis through Multimodal Protein Corona Formation AID - 10.1101/2024.11.13.623417 DP - 2024 Jan 01 TA - bioRxiv PG - 2024.11.13.623417 4099 - http://biorxiv.org/content/early/2024/11/18/2024.11.13.623417.short 4100 - http://biorxiv.org/content/early/2024/11/18/2024.11.13.623417.full AB - Background Plant-derived nanoparticles (PDNP) are nano-sized particles isolated from various edible plants that contain bioactive components involved in regulating cellular immune responses against pathogenic intrusion and inflammation.Purpose This study describes a novel PDNP derived from Lepidium meyenii Walp (maca) that efficiently captures pro-inflammatory cytokines and acute phase proteins in its protein corona to enhance survival in two representative lethal models of sepsis.Methods Lipid nanoparticles were isolated from maca (MDNP) and triacylglycerols and phytoceramides were identified as major constituents using lipidomics. The physicochemical properties of MDNPs were determined, anti-inflammatory effects of MDNP were evaluated using in vitro models and in vivo using endotoxemia and cecal ligation and puncture (CLP) polymicrobial sepsis models. Proteomic analysis of MDNP in healthy or LPS-induced inflammatory plasma was used to determine the composition and inflammatory pathways modulated due to the MDNP protein corona.Results In vitro studies showed that MDNP were non-toxic, reduced macrophage activation, and effectively sequestered pro-inflammatory cytokines to mitigate NF-κB activity under lipopolysaccharide (LPS) stimulation. In a pre-established LPS-induced endotoxemia model, MDNP-treated mice showed significantly reduced systemic pro-inflammatory cytokines and enhanced survival. Untargeted proteomics and pathway analysis of the MDNP protein corona identified an enrichment in acute phase proteins in MDNP-LPS plasma coronas. MDNP treatment also significantly improved survival in the CLP sepsis model in the absence of antibiotics.Conclusion This work identified MDNP as an efficient, plant-derived lipid NP that broadly sequesters and neutralizes a compilation of inflammatory mediators in their coronas, offering multimodal therapeutic potential for treating inflammatory diseases.Competing Interest StatementThe authors have declared no competing interest.AbbreviationsAP-1activator protein-1APCSSerum Amyloid P componentAPPacute phase proteinsAPRacute phase responseAST/SGOTaspartate aminotransferaseATL/SGPTalanine aminotransferaseBMDMbone marrow derived macrophagesBUNblood urea nitrogenCer(Phyto)phytoceramideCLPcecal ligation and punctureCREAcreatineDAMPdamage-associated molecular patternDAPI4’,6-diamidino-2-phenylindoleDGDGdigalactosyldiacylglycerolDLSdynamic light scatteringDSCdifferential scanning calorimetryFABP4Fatty Acid Binding Protein 4FFAfree fatty acidsFITCfluorescein isothiocyanateH&amp;Ehematoxylin &amp; eosinHexCer(phyto)phytohexosylceramideHphaptoglobinHSP90AAHeat Shock Protein 90 alphaIFN-γinterferon-gammaIL-1βinterleukin-1betaIL-6interleukin-6IPintraperitonealIVintravenousLCN2lipocalin-2LPClysophosphatidylcholineLPSlipopolysaccharideMDNPmaca-derived lipid nanoparticlesNF-κBnuclear factor kappa-light-chain-enhancer of activated B cellsNGP4neutrophilic granule proteinPAMPpathogen-associated molecular patternPCphosphatidylcholinePDNPplant-derived lipid nanoparticlePEGpoly(ethylene glycol)PIphosphatidylinositolPLGApoly(lactic-co-glycolic acid)Saa1serum amyloid A1SEAPsecreted alkaline phosphataseSerpinA3Nserine protease inhibitor A3NTGtriglycerideTLR-4toll-like receptor-4TNF-αtumor necrosis factor-alphaTPtotal protein