Concept

Alginic acid

Related publications (43)

Mechanotransduction of epiphyseal chondro-progenitors in 3D hydrogel system.

Of the many external factors that affect cell behavior, mechanical cues are fundamental in modulating a cell’s phenotype. Biomimetic mechanosensing requires the three-dimensional encapsulation of cells within a controlled microenvironment. As musculoskelet ...

2012

Link between Alginate Reaction Front Propagation and General Reaction Diffusion Theory

Jürgen Brugger, Philippe Renaud, Thomas Michael Braschler, Kristopher Pataky, Ana Valero, Ludovica Colella

We provide a common theoretical framework reuniting specific models for the Ca2+-alginate system and general reaction diffusion theory along with experimental validation on a microfluidic chip. As a starting point, we use a set of nonlinear, partial differ ...

2011

Nanofibrillated cellulose composite hydrogel for the replacement of the nucleus pulposus

Dominique Pioletti, Pierre-Etienne Bourban, Ana Borges de Couraça, Fabien Duc

The swelling and compressive mechanical behavior as well as the morphology and biocompatibility of composite hydrogels based on Tween® 20 trimethacrylate (T3), N-vinyl-2-pyrrolidone (NVP) and nanofibrillated cellulose (NFC) were assessed in the present stu ...

2011

Hybrid Microspheres For Cell Encapsulation

Redouan Mahou

Cell microencapsulation is an active interdisciplinary research field. It requires the input from materials sciences, organic and physical chemistry, biology and medicine. Hydrogels are particularly suitable materials to form microspheres for cell entrapme ...

EPFL2011

Fluidic microstructuring of alginate hydrogels for the single cell niche

Jürgen Brugger, Philippe Renaud, Thomas Michael Braschler, Kristopher Pataky, Ana Valero, Ludovica Colella

Controlling alginate gel formation by diffusion of Ca2+ ions through a filter barrier, a layer-by-layer deposition technique with resolution on the size scale of a single cell is presented. It offers the possibility of exposing cells under biocompatible co ...

Royal Society of Chemistry2010

Alginate-Poly(ethylene glycol) Hybrid Microspheres with Adjustable Physical Properties

Jutta Christine Wandrey, Redouan Mahou

A one-step extrusion process under physiological conditions yielded calcium alginate-poly-(ethylene glycol) hybrid microspheres (Alg-PEG-M), for which the physical properties were adjustable by the macromolecular characteristics of the components, their co ...

American Chemical Society2010

Effect of natural organic matter and green microalga on carboxyl-polyethylene glycol coated CdSe/ZnS quantum dots stability and transformations under freshwater conditions

The influence of pH, ionic strength, presence of humic or alginic acids, extracellular polymeric substances (EPS), or freshwater microalga Chlorella kesslerii on the stability and transformation of carboxyl-PEG-CdSe/ZnS core/shell quantum dots (QDs) in ter ...

2009

A new non-toxic chemically cross-linked ELP hydrogel for in situ protein delivery

Karine Ciapala

Proteins play an essential role in all biological processes and have been attracting more and more attention as drug candidates due to their high specificity and activity. However, their use as therapeutics has been seriously held back given that their abi ...

2009

Microfluidic patterning of alginate hydrogels

Philippe Renaud

In this article the authors present techniques which allow the microfluidic design of alginate microgels with layer composition on a chip. The hydrogel is created by combining two laminar flows of the gel precursor solutions-a calcium solution and an algin ...

American Vacuum Society2007

Gentle cell trapping and release on a microfluidic chip by in situ alginate hydrogel formation

Philippe Renaud, Thomas Michael Braschler, Lynda Metref

Microfluidic devices are increasingly used to perform biological experiments on a single-cell basis. However, long-term stability of cell positions is still an issue. A novel biocompatible method for cell entrapment and release on a microchip is presented. ...

2005

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