Publications by Caroline Vandevyver

Synthesis and cell localization of self-assembled dinuclear lanthanide bioprobes

Jean-Claude Bünzli, Caroline Vandevyver, Anne-Sophie Chauvin, Bo Song

Lanthanide bioprobes and bioconjugates are ideal luminescent stains in view of their low propensity to photobleaching, sharp emission lines and long excited state lifetimes permitting time-resolved detection for enhanced sensitivity. In this paper, we expa ...

Royal Society, The2013

Fluorescent magnetic bead and cell differentiation/counting using a CMOS SPAD matrix

Martinus Gijs, Caroline Vandevyver, Edoardo Charbon, Ulrike Lehmann, Emile Dupont

We present a monolithic silicon chip comprising a matrix of 84 single photon avalanche diodes (SPADs) to detect and discriminate fluorescent beads or fluorescently labeled single cells in a polydimethyl(-siloxane) (PDMS) cartridge that is positioned on top ...

Elsevier2012

Lighting-up cancerous cells and tissues with lanthanide luminescence

Martinus Gijs, Jean-Claude Bünzli, Caroline Vandevyver, Anne-Sophie Chauvin, Hans-Anton Lehr

2011

Chaotic mixing using source-sink microfluidic flows in a PDMS chip

Abdeljalil Sayah, Martinus Gijs, Caroline Vandevyver, Venkataragavalu Sivagnanam, Hüseyin Cumhur Tekin, Ata Tuna Ciftlik

We present an active fixed-volume mixer based on the creation of multiple source–sink microfluidic flows in a polydimethylsiloxane (PDMS) chip without the need of external or internal pumps. To do so, four different pressure-controlled actuation chambers a ...

Springer-Verlag2011

Fast Immunohistochemical BioMarker Detection Device for Cancer Tissue Slices

Martinus Gijs, Jean-Claude Bünzli, Caroline Vandevyver, Bo Song, Ata Tuna Ciftlik, Hans-Anton Lehr

2010

Active microfluidic mixer using virtual source-sink pairs for DNA purification

Martinus Gijs, Caroline Vandevyver, Hüseyin Cumhur Tekin

We present an active mixer based on the creation of virtual source-sink pairs in a polydimethylsiloxane (PDMS) chip. Perfect mixing is achieved in only a sub-second time interval for a compact 5 μL mixing volume. This excellent performance is achieved than ...

2010

Monolithic Silicon Chip for Immunofluorescence Detection on Single Magnetic Beads

Martinus Gijs, Caroline Vandevyver, Edoardo Charbon, Ulrike Lehmann, Emile Dupont

While fluorescence detection is widely used for bioassays owing to its high sensitivity, a complete fluorescent microscopy setup, comprised of a light source, optical filters, a microscope body, and a camera, still is bulky equipment, compromising its use ...

2010

Bioconjugated lanthanide luminescent helicates as multilabels for lab-on-a-chip detection of cancer biomarkers

Martinus Gijs, Jean-Claude Bünzli, Caroline Vandevyver, Anne-Sophie Chauvin, Venkataragavalu Sivagnanam, Bo Song, Vanesa Fernandez Moreira, Hans-Anton Lehr

The lanthanide binuclear helicate [Eu2(LC2(CO2H))3] is coupled to avidin to yield a luminescent bioconjugate EuB1 (Q ¼ 9.3%, s(5D0) ¼ 2.17 ms). MALDI/TOF mass spectrometry confirms the covalent binding of the Eu chelate and UV-visible spectroscopy allows o ...

2010

Sandwich immunoassay on a microfluidic chip using patterns of electrostatically self-assembled streptavidin-coated beads

Martinus Gijs, Caroline Vandevyver, Frédéric Lacharme, Venkataragavalu Sivagnanam

In this paper, we demonstrate a bead-based microfluidic immunoassay using self-assembled streptavidin-coated bead micropatterns. The beads are assembled on the microfluidic channel surface using electrostatic forces between the negatively-charged streptavi ...

Elsevier2009

Time-resolved lanthanide luminescence for lab-on-a-chip detection of biomarkers on cancerous tissues

Martinus Gijs, Jean-Claude Bünzli, Caroline Vandevyver, Venkataragavalu Sivagnanam, Bo Song, Hans-Anton Lehr

PDMS-based microfluidic devices combined with lanthanide-based immunocomplexes have been successfully tested for the multiplex detection of biomarkers on cancerous tissues, revealing an enhanced sensitivity compared to classical organic dyes. ...

2009

Time-Resolved Luminescence for Immunohistochemical Detection of Cancer Biomarkers in a Lab-on-a-Chip

Martinus Gijs, Jean-Claude Bünzli, Caroline Vandevyver, Venkataragavalu Sivagnanam, Ata Tuna Ciftlik

2009

On-chip immunoassay using electrostatic assembly of streptavidin-coated bead micropatterns

Martinus Gijs, Caroline Vandevyver, Venkataragavalu Sivagnanam

We propose an original concept for a sandwich immunoassay that is completely performed on-chip using streptavidin-coated beads as substrate. The latter are electrostatically self-assembled on aminosilane micropatterns at the bottom of a microfluidic channe ...

2009

On-chip immunoassay using electrostatic assembly of streptavidin-coated bead micropatterns

Martinus Gijs, Caroline Vandevyver, Venkataragavalu Sivagnanam, Bo Song, Hui Yang

We propose an original concept for a sandwich immunoassay that is completely performed on-chip using streptavidin-coated beads as substrate. The latter are electrostatically self-assembled on aminosilane micropatterns at the bottom of a microfluidic channe ...

2009

Luminescent Bimetallic Lanthanide Bioprobes for Cellular Imaging with Excitation in the Visible-Light Range

Jean-Claude Bünzli, Caroline Vandevyver, Frédéric Gumy, Anne-Sophie Chauvin, Bo Song

A series of homoditopic ligands H2LCX (X=4–6) has been designed to self-assemble with lanthanide ions (LnIII), resulting in neutral bimetallic helicates of overall composition [Ln2ACHTUNGTRENUNG(LCX)3] with the aim of testing the influence of substituents ...

2009

Magnetic beads retention device for sandwich immunoassay: comparison of off-chip and on-chip antibody incubation

Martinus Gijs, Caroline Vandevyver, Frédéric Lacharme

We use magnetic microbeads, which are magnetically self-assembled in chains in a microfluidic chip, as reaction substrates to implement two different sandwich immunoassay protocols for the detection of mouse monoclonal target antibodies. The magnetic chain ...

Springer-Verlag2009

Screening of a Human Antibody Phage Display Library Against a Peptide Antigen Using Stimuli-Responsive Bioconjugates

Dorothée Dumoulin, Caroline Vandevyver

A synthetic antibody phage library, (ETH-2) was screened against the MUC-1 peptide. Two standard methods were used, namely screening on immunotubes coated with the peptide antigen and on streptavidin-coated paramagnetic particles together with a biotinylat ...

2008

Full on-chip nanoliter immuno-assay by geometrical magnetic trapping of nanoparticle chains

Martinus Gijs, Caroline Vandevyver, Frédéric Lacharme

We propose an original concept to perform a complete on-chip sandwich immunoassay on magnetic nanoparticles that are self-assembled in chains in a uniform magnetic field. The magnetic chains are retained over periodically enlarged cross sections of a micro ...

2008

Micropatterning of protein-functionalized magnetic beads on glass using electrostatic self-assembly

Abdeljalil Sayah, Martinus Gijs, Caroline Vandevyver, Venkataragavalu Sivagnanam

We demonstrate a simple and fast method for self-assembly-driven micropatterning of protein functionalized magnetic beads on glass. We use positively charged aminosilane micro-patterns as template for selective immobilization of streptavidin-coated beads b ...

2008

A versatile method for quantification of DNA and PCR products based on time-resolved EuIII luminescence

Jean-Claude Bünzli, Caroline Vandevyver, Anne-Sophie Chauvin, Bo Song

A versatile and robust method for the determination of DNA and PCR products (

2008

Effect of the length of polyoxyethylene substituents on luminescent bimetallic lanthanide bioprobes

Jean-Claude Bünzli, Caroline Vandevyver, Anne-Sophie Chauvin, Bo Song

The new homoditopic ligand

H_2L^{C2'}

self-assembles with lanthanide ions (

Ln^{III}

) to yield neutral bimetallic helicates of overall composition

[Ln_2(L^{C2'})_3]

; it is fitted with two hexakis(oxyethylene) chains to test their effects on the thermo ...

2008