Publications associées à Méthode de Bradford

Efficient AC electrothermal flow (ACET) on-chip for enhanced immunoassays

Martinus Gijs, Diego Gabriel Dupouy, Muaz Salama Abdelmonem Draz

Biochemical reaction rates in microfluidic systems are known to be limited by the diffusional transport of reagents, leading often to lowered sensitivity and/or longer detection times in immunoassays. Several methods, including electrically powering electr ...

ROYAL SOC CHEMISTRY2023

Development of next-generation microfluidic systems for enhanced, faster, and cost-effective immunoassays for tissue diagnostics - Ac electrothermal flow & Acoustofluidics

Muaz Salama Abdelmonem Draz

The application of microfluidics in the field of surface-based assays and more specifically, the spatial molecular profiling of tumor tissues has gained a lot of interest, especially with the increased interest in personalized medicine and targeted therapy ...

EPFL2023

Comparative Analysis of Total Alpha-Synuclein (alpha SYN) Immunoassays Reveals That They Do Not Capture the Diversity of Modified alpha SYN Proteoforms

Hilal Lashuel, Lorène Aeschbach, Mohamed Bilal Fares, Lara Petricca, Ritwik Burai, Layane Hanna-el-Daher

Background: The development of therapeutics for Parkinson's disease (PD) requires the establishment of biomarker assays to enable stratifying patients, monitoring disease progression, and assessing target engagement. Attempts to develop diagnostic assays b ...

IOS PRESS2022

Alpha-Synuclein oligomerization and aggregation: All models are useful but only if we know what they model This is the reply to a comment "Alpha-synuclein oligomerization and aggregation: A model will always be a model" on the original article "Monitoring alpha-synuclein oligomerization and aggregation using bimolecular fluorescence complementation assays: What you see is not always what you get". The articles are accompanied by a Preface "How good are cellular models?"

Hilal Lashuel

Alpha-synuclein oligomerization is one of the early events on the pathway to Lewy body formation. Therefore, interfering with this process holds tremendous potential for developing therapies that block alpha-Syn pathology formation and toxicity. The develo ...

Wiley-Blackwell2021

Microfluidic device performing on flow study of serial cell–cell interactions of two cell populations

Philippe Renaud, Margaux Catherine Marie Duchamp, George Coukos, Thamani Dahoun, Alexandre Harari, Marion Arnaud

In this study we present a novel microfluidic hydrodynamic trapping device to probe the cell–cell interaction between all cell samples of two distinct populations. We have exploited an hydrodynamic trapping method using microfluidics to immobilize a batch ...

2019

Measurement of Mitochondrial Mass and Membrane Potential in Hematopoietic Stem Cells and T-cells by Flow Cytometry

Olaia Maria Naveiras Torres-Quiroga, Mukul Girotra, George Coukos, Nicola Vannini, Alexandre Harari

A fine balance of quiescence, self-renewal, and differentiation is key to preserve the hematopoietic stem cell (HSC) pool and maintain lifelong production of all mature blood cells. In recent years cellular metabolism has emerged as a crucial regulator of ...

2019

Label-free plasmonic biosensors for real-time live cell analysis

Xiaokang Li

For decades, the understanding of life has been focused on its most fundamental building blocks: molecules. Deciphering the dynamic activities of protein molecules in human cells is of vital significance for fundamental and clinical studies. The minuscule ...

EPFL2019

Microfluidic systems for high-throughput and high-content screening using the nematode Caenorhabditis elegans

Martinus Gijs, Thomas Lehnert, Matteo Cornaglia

In a typical high-throughput drug screening (HTS) process, up to millions of chemical compounds are applied to cells cultured in well plates, aiming to find molecules that exhibit a robust dose-response, as evidenced for example by a fluorescence signal. I ...

Royal Soc Chemistry2017

Multiplexed nanoplasmonic biosensor for one-step simultaneous detection of Chlamydia trachomatis and Neisseria gonorrhoeae in urine

Hatice Altug, Maria Soler Aznar, Andrea Cavallini, Alexander Belushkin

Development of rapid and multiplexed diagnostic tools is a top priority to address the current epidemic problem of sexually transmitted diseases. Here we introduce a novel nanoplasmonic biosensor for simultaneous detection of the two most common bacterial ...

2017

Optimization of thin-film highly-compliant elastomer sensors for contractility measurement of muscle cells

Herbert Shea, Cristina Martin Olmos, Matthias Imboden, Samuel Rosset, Alexandre Poulin, Francesca Sorba, Mélanie Favre, Oluwaseun Adelowo Araromi

Test assays capable of providing quantitative characterization of the contraction of cardiac and smooth muscle cells are of great need for drug development and screening. Several methodologies have been proposed for achieving measurement of cell contractil ...

Elsevier Science Bv2016

Extra short incubation microfluidic assisted – fluorescence in situ hybridization (ESIMA-FISH)

Martinus Gijs, Raphaël Etienne Jean Trouillon, Huu Tuan Nguyen, Estelle Annick Cuttaz, Laurène Nathalie Dupont

Fluorescence in situ hybridization (FISH) is a powerful technique for evaluating the HER2 gene status in breast cancer specimen (1). However, most of FISH assays currently used in clinical laboratories are expensive and require long experimental time, up t ...

2016

Rapid, Sensitive and Real-Time Multiplexing Platform for the Analysis of Protein and Nucleic-Acid Biomarkers

Philippe Renaud, Nicolas Demierre, Raphaël Tornay, Lucienne Lagopoulos, David Bernasconi

We describe a multiplexing technology, named Evalution, based on novel digitally encoded microparticles in microfluidic channels. Quantitative multiplexing is becoming increasingly important for research and routine clinical diagnostics, but fast, easy-to- ...

Amer Chemical Soc2015

Quantification of low molecular weight drugs : from the selection of nucleic acid-based capture molecules to the characterization in patient samples

Anna Ferretti

Therapeutic Drug Monitoring (TDM) is considered one of the most successful approaches to personalized medicine. However, the accuracy requirements on the quantification of drug concentration and the challenges in the dose adjustment limit the application o ...

EPFL2015

High-throughput nanoimmunoassay chip

Sebastian Maerkl, Jose Luis Garcia Cordero

The nanoimmunoassay chip comprises at least flow and control layers, divided into several rows, each row containing a plurality of single assay units, each assay unit contains two spotting chambers (1) and an assay chamber in the middle, wherein neck valve ...

2015

A miniaturized electrochemical assay for homocysteine using screen-printed electrodes with cytochrome c anchored gold nanoparticles

Christian Santschi, Olivier Martin, Madasamy Thangamuthu

Determination of homocysteine (HcySH) is highly beneficial in human physiology and pathophysiology for diagnosis and prognosis of cardiovascular diseases (CVD). Unfortunately, the practicability of the existing methodologies for the determination of HcySH ...

Royal Society of Chemistry2015

Bioluminescence for Assessing Drug Potency against Nonreplicating Mycobacterium tuberculosis

Stewart Cole, Neeraj Dhar, Claudia Sala, Ruben Hartkoorn, Ming Zhang, Benoit Lechartier, Anthony Vocat

Targeting dormant Mycobacterium tuberculosis represents a challenge to antituberculosis drug discovery programs. We previously reported and validated the use of the streptomycin (STR)-dependent M. tuberculosis 18b strain as a tool for assessing drug potenc ...

American Society for Microbiology2015

Novel Chemosensors for Biologically Important Analytes

Ziya Köstereli

In this work, fluorescent-based chemosensors for the detection of important analytes in aqueous solution are described. The sensors are based on different detection concepts, including analyte-induced aggregation/de-aggregation, pattern-based sensing and m ...

EPFL2015

Simple and Rapid Method To Determine Antimycobacterial Potency of Compounds by Using Autoluminescent Mycobacterium tuberculosis

Neeraj Dhar, Ekaterina Gelman

A major obstacle in the process of discovery of drugs against Mycobacterium tuberculosis is its extremely slow growth rate and long generation time (similar to 20 to 24 h). Consequently, determination of MICs and minimum bactericidal concentrations (MBCs) ...

Amer Soc Microbiology2014

Digital approaches in Electronic biochips

Carlotta Guiducci, Enrico Accastelli, Fabio Mario Spiga

Download Citation Email Print Request Permissions Save to Project Electronic biochips are defined by the merge of integrated electronics, containing diverse sensors, with reaction solution and sample hold in reaction chamber(s). Based on their overall stru ...

IEEE2013

Use of the mitochondria toxicity assay for quantifying the viable cell density of microencapsulated jurkat cells

Jutta Christine Wandrey, Redouan Mahou, Michael Werner

The mitochondria toxicity assay (MTT assay) is an established method for monitoring cell viability based on mitochondrial activity. Here the MTT assay is proposed for the in situ quantification of the living cell density of microencapsulated Jurkat cells. ...

Wiley-Blackwell2013