Engineered Biomimetic Platelet Membrane-Coated Nanoparticles Block Staphylococcus aureus Cytotoxicity and Protect Against Lethal Systemic Infection
Staphylococcus aureus (S. aureus) is a leading human pathogen capable of producing severe invasive infections such as bacteremia, sepsis, and endocarditis with high morbidity and mortality, exacerbated by the increasingly widespread antibiotic resistance exemplified by methicillin-resistant strains...
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doaj-bc036e7eff4641e9bacd741436f451a12021-10-03T04:39:48ZengElsevierEngineering2095-80992021-08-017811491156Engineered Biomimetic Platelet Membrane-Coated Nanoparticles Block Staphylococcus aureus Cytotoxicity and Protect Against Lethal Systemic InfectionJwa-Kyung Kim0Satoshi Uchiyama1Hua Gong2Alexandra Stream3Liangfang Zhang4Victor Nizet5Division of Nephrology, Department of Internal Medicine & Kidney Research Institute, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; Department of Clinical Immunology, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; Division of Host–Microbe Systems and Therapeutics, Department of Pediatrics, University of California San Diego, La Jolla, CA 92093, USA; Corresponding authors.Division of Host–Microbe Systems and Therapeutics, Department of Pediatrics, University of California San Diego, La Jolla, CA 92093, USADepartment of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USADivision of Host–Microbe Systems and Therapeutics, Department of Pediatrics, University of California San Diego, La Jolla, CA 92093, USADepartment of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA; Moores Cancer Center, University of California San Diego Health, La Jolla, CA 92037, USADivision of Host–Microbe Systems and Therapeutics, Department of Pediatrics, University of California San Diego, La Jolla, CA 92093, USA; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA 92093, USA; Corresponding authors.Staphylococcus aureus (S. aureus) is a leading human pathogen capable of producing severe invasive infections such as bacteremia, sepsis, and endocarditis with high morbidity and mortality, exacerbated by the increasingly widespread antibiotic resistance exemplified by methicillin-resistant strains (MRSA). S. aureus pathogenesis is fueled by the secretion of toxins—such as the membrane-damaging pore-forming α-toxin, which have diverse cellular targets including the epithelium, endothelium, leukocytes, and platelets. Here, we examine the use of human platelet membrane-coated nanoparticles (PNPs) as a biomimetic decoy strategy to neutralize S. aureus toxins and preserve host cell defense functions. The PNPs blocked platelet damage induced by S. aureus secreted toxins, thereby supporting platelet activation and bactericidal activity. Likewise, the PNPs blocked macrophage damage induced by S. aureus secreted toxins, thus supporting macrophage oxidative burst, nitric oxide production, and bactericidal activity, and diminishing MRSA-induced neutrophil extracellular trap release. In a mouse model of MRSA systemic infection, PNP administration reduced bacterial counts in the blood and protected against mortality. Taken together, the results from the present work provide a proof of principle of the therapeutic benefit of PNPs in toxin neutralization, cytoprotection, and increased host resistance to invasive S. aureus infection.http://www.sciencedirect.com/science/article/pii/S2095809920303313NanoparticleNanospongePlateletStaphylococcus aureusBacterial toxinsSepsis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jwa-Kyung Kim Satoshi Uchiyama Hua Gong Alexandra Stream Liangfang Zhang Victor Nizet |
spellingShingle |
Jwa-Kyung Kim Satoshi Uchiyama Hua Gong Alexandra Stream Liangfang Zhang Victor Nizet Engineered Biomimetic Platelet Membrane-Coated Nanoparticles Block Staphylococcus aureus Cytotoxicity and Protect Against Lethal Systemic Infection Engineering Nanoparticle Nanosponge Platelet Staphylococcus aureus Bacterial toxins Sepsis |
author_facet |
Jwa-Kyung Kim Satoshi Uchiyama Hua Gong Alexandra Stream Liangfang Zhang Victor Nizet |
author_sort |
Jwa-Kyung Kim |
title |
Engineered Biomimetic Platelet Membrane-Coated Nanoparticles Block Staphylococcus aureus Cytotoxicity and Protect Against Lethal Systemic Infection |
title_short |
Engineered Biomimetic Platelet Membrane-Coated Nanoparticles Block Staphylococcus aureus Cytotoxicity and Protect Against Lethal Systemic Infection |
title_full |
Engineered Biomimetic Platelet Membrane-Coated Nanoparticles Block Staphylococcus aureus Cytotoxicity and Protect Against Lethal Systemic Infection |
title_fullStr |
Engineered Biomimetic Platelet Membrane-Coated Nanoparticles Block Staphylococcus aureus Cytotoxicity and Protect Against Lethal Systemic Infection |
title_full_unstemmed |
Engineered Biomimetic Platelet Membrane-Coated Nanoparticles Block Staphylococcus aureus Cytotoxicity and Protect Against Lethal Systemic Infection |
title_sort |
engineered biomimetic platelet membrane-coated nanoparticles block staphylococcus aureus cytotoxicity and protect against lethal systemic infection |
publisher |
Elsevier |
series |
Engineering |
issn |
2095-8099 |
publishDate |
2021-08-01 |
description |
Staphylococcus aureus (S. aureus) is a leading human pathogen capable of producing severe invasive infections such as bacteremia, sepsis, and endocarditis with high morbidity and mortality, exacerbated by the increasingly widespread antibiotic resistance exemplified by methicillin-resistant strains (MRSA). S. aureus pathogenesis is fueled by the secretion of toxins—such as the membrane-damaging pore-forming α-toxin, which have diverse cellular targets including the epithelium, endothelium, leukocytes, and platelets. Here, we examine the use of human platelet membrane-coated nanoparticles (PNPs) as a biomimetic decoy strategy to neutralize S. aureus toxins and preserve host cell defense functions. The PNPs blocked platelet damage induced by S. aureus secreted toxins, thereby supporting platelet activation and bactericidal activity. Likewise, the PNPs blocked macrophage damage induced by S. aureus secreted toxins, thus supporting macrophage oxidative burst, nitric oxide production, and bactericidal activity, and diminishing MRSA-induced neutrophil extracellular trap release. In a mouse model of MRSA systemic infection, PNP administration reduced bacterial counts in the blood and protected against mortality. Taken together, the results from the present work provide a proof of principle of the therapeutic benefit of PNPs in toxin neutralization, cytoprotection, and increased host resistance to invasive S. aureus infection. |
topic |
Nanoparticle Nanosponge Platelet Staphylococcus aureus Bacterial toxins Sepsis |
url |
http://www.sciencedirect.com/science/article/pii/S2095809920303313 |
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