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Paulo Henrique Jacob Silva

Cette personne a quitté l’EPFL

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Publications associées (33)

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Cryogenic electron tomography to determine thermodynamic quantities for nanoparticle dispersions

Francesco Stellacci, Quy Ong Khac, Paulo Henrique Jacob Silva, Davide Demurtas, Xufeng Xu, Francesca Olgiati, Anna Murello, Ting Mao

Here we present a method to extract thermodynamic quantities for nanoparticle dispersions in solvents. The method is based on the study of tomograms obtained from cryogenic electron tomography (cryoET). The approach is demonstrated for gold nanoparticles ( ...

Royal Society of Chemistry2022

Benzene with Alkyl Chains Is a Universal Scaffold for Multivalent Virucidal Antivirals

Jay-Ar Bautista Dela Cruz, Francesco Stellacci, Paulo Henrique Jacob Silva, Matteo Gasbarri, Lixia Wei, Yong Zhu, Heyun Wang, Sujeet Pawar

Most viruses start their invasion by binding to glycoproteins' moieties on the cell surface (heparan sulfate proteoglycans [HSPG] or sialic acid [SA]). Antivirals mimicking these moieties multivalently are known as broad-spectrum multivalent entry inhibito ...

Amer Chemical Soc2024

Antiviral Mechanism of Virucidal Sialic Acid Modified Cyclodextrin

Francesco Stellacci, Paulo Henrique Jacob Silva, Yong Zhu

We have reported that CD-6'SLN [6-sialyllactosamine (6'SLN)-modified beta-cyclodextrin (CD)] can be a potential anti-influenza drug because it irreversibly deactivates virions. Indeed, in vivo, CD-6'SLN improved mice survival in an H1N1 infection model eve ...

MDPI2023

Peptide-Grafted Nontoxic Cyclodextrins and Nanoparticles against Bacteriophage Infections

Francesco Stellacci, Paulo Henrique Jacob Silva, Lixia Wei, Laura Roset Julia, Corey Alfred Stevens, Lukasz Richter

One of the biggest threats for bacteria-based bioreactors in the biotechnology industry is infections caused by bacterial viruses called bacteriophages. More than 70% of companies admitted to encountering this problem. Despite phage infections being such a ...

AMER CHEMICAL SOC2022

Superparamagnetic Nanoparticles as High Efficiency Magnetic Resonance Imaging T-2 Contrast Agent

Francesco Stellacci, Henrik Moodysson Rønnow, Kurt Schenk, Paulo Henrique Jacob Silva, Randy Patrick Carney, Lin Yang, Ping Huang, Arash Alahgholipour Omrani

Nanoparticle-based magnetic resonance imaging T-2 negative agents are of great interest, and much effort is devoted to increasing cell loading capability while maintaining low cytotoxicity. Herein, two classes of mixed-ligand protected magnetic-responsive, ...

American Chemical Society2017

Lipid tail protrusions mediate the insertion of nanoparticles into model cell membranes

Francesco Stellacci, Paulo Henrique Jacob Silva, Javier Reguera Gomez, Kislon Voitchovsky, Maria Ricci

Recent work has demonstrated that charged gold nanoparticles (AuNPs) protected by an amphiphilic organic monolayer can spontaneously insert into the core of lipid bilayers to minimize the exposure of hydrophobic surface area to water. However, the kinetic ...

Nature Publishing Group2014

Simultaneous Electrophysiology and Imaging Reveal Changes in Lipid Membrane Thickness and Tension upon Uptake of Amphiphilic Gold Nanoparticles

Francesco Stellacci, Paulo Henrique Jacob Silva, Xufeng Xu

Amphiphilic gold core nanoparticles (AmNPs) striped with hydrophilic 11-mercapto-1-undecanesulfonate (MUS) and hydrophobic 1-octanethiol (OT) ligands are promising candidates for drug carriers that passively and nondisruptively enter cells. Yet, how they i ...

Amer Chemical Soc2023

Distribution of superparamagnetic Au/Fe nanoparticles in an isolated guinea pig brain with an intact blood brain barrier

Francesco Stellacci, Paulo Henrique Jacob Silva

Diagnosis and treatment of brain disorders, such as epilepsy, neurodegenerative diseases and tumors, would benefit from innovative approaches to deliver therapeutic or diagnostic compounds into the brain parenchyma, with either a homogeneous or a targeted ...

ROYAL SOC CHEMISTRY2018

High-resolution scanning tunneling microscopy characterization of mixed monolayer coated gold nanoparticles

Francesco Stellacci, Paulo Henrique Jacob Silva, Quy Ong Khac, Javier Reguera Gomez, Kellen Michael Harkness, Mauro Moglianetti

Amer Chemical Soc2013

Ligand concentration determines antiviral efficacy of silica multivalent nanoparticles

Francesco Stellacci, Paulo Henrique Jacob Silva, Quy Ong Khac, Heyun Wang, Xufeng Xu, Rémi Andréa La Polla

We have learned from the recent COVID-19 pandemic that the emergence of a new virus can quickly become a global health burden and kill millions of lives. Antiviral drugs are essential in our fight against viral diseases, but most of them are virus-specific ...

Academic Press Inc Elsevier Science2023

Electrical Method to Quantify Nanoparticle Interaction with Lipid Bilayers

Francesco Stellacci, Paulo Henrique Jacob Silva, Randy Patrick Carney, Kislon Voitchovsky

Understanding as well as rapidly screening the interaction of nanoparticles with cell membranes is of central importance for biological applications such as drug and gene delivery. Recently, we have shown that "striped" mixed-monolayer-coated gold nanopart ...

American Chemical Society2013

Virucidal compositions and use thereof

Francesco Stellacci, Paulo Henrique Jacob Silva, Valeria Cagno, Özgün Kocabiyik

The invention relates to virucidal compositions comprising a sialic acid (SA) moiety, pharmaceutical compositions and disinfection and/or sterilization compositions comprising thereof and uses thereof in disinfection and/or sterilization methods and in tre ...

2021

Amphiphilic Au nanoparticles and cholesterol-containing liposomes serving as minimal tunable fusion machinery

Francesco Stellacci, Paulo Henrique Jacob Silva

SPRINGER2023