Publications associées à Recent Advances in Alginate-Based Hydrogels for Cell Transplantation Applications

Enhancing Chondrocyte Biosynthetic Activities: Harnessing the Power of Loading-Induced Evolved Temperature

Chondrocytes within articular cartilage possess the capacity to perceive and react to signals generated by the typical load-bearing actions of daily life, such as walking or running. Articular cartilage is predominantly oriented toward compression-based fu ...

EPFL2024

A guide to preclinical evaluation of hydrogel-based devices for treatment of cartilage lesions

Dominique Pioletti, Peyman Karami, Theofanis Stampoultzis, Yanheng Guo

The drive to develop cartilage implants for the treatment of major defects in the musculoskeletal sys-tem has resulted in a major research thrust towards developing biomaterial devices for cartilage repair. Investigational devices for the restoration of ar ...

ELSEVIER SCI LTD2023

Islet Encapsulation: New Developments for the Treatment of Type 1 Diabetes

Sandrine Gerber, Léo Bühler, Qixing Zhang, Yi Wang

Islet transplantation is a promising approach for the treatment of type 1 diabetes (T1D). Currently, clinical islet transplantation is limited by allo - and autoimmunity that may cause partial or complete loss of islet function within a short period of tim ...

2022

Mechanical Reinforcement of Hydrogels through Physical Crosslinks and Double Network Granular Architecture

Alvaro Lino Boris Charlet

Throughout nature, organisms fabricate a myriad of materials to sustain their lifestyle. Many of the soft materials are composed of water-swollen networks of organic molecules, so-called hydrogels. They generally contribute to the mechanical integrity of t ...

EPFL2022

Development of Standardized Fetal Progenitor Cell Therapy for Cartilage Regenerative Medicine: Industrial Transposition and Preliminary Safety in Xenogeneic Transplantation

Dominique Pioletti, Sandra Jaccoud, Nathalie Hirt-Burri, Philippe Abdel Sayed, Corinne Scaletta, Salim Elias Darwiche, Alexis Laurent

Diverse cell therapy approaches constitute prime developmental prospects for managing acute or degenerative cartilaginous tissue affections, synergistically complementing specific surgical solutions. Bone marrow stimulation (i.e., microfracture) remains a ...

2021

Towards an in vitro cardiac model: 3D environment, co-culture, alignment, and mechanical stimulation impact on cell behavior

Fatemeh Navaee

Our aim is to develop a 3D model unit of cardiac muscle: an in-vitro analog of the trabeculae carneae found in vivo. As a base hydrogel matrix for cardiomyocyte culture in 3D, we develop a blend of decellularized extracellular matrix (dECM) and fibrin. Thi ...

EPFL2021

Shape retaining self-healing metal-coordinated hydrogels

Raffaele Mezzenga, Alvaro Lino Boris Charlet, Esther Amstad

Metal-coordinated hydrogels are physical hydrogels entirely crosslinked by complexes between ligand decorated polymers and metal ions. The mechanical properties of these hydrogels strongly depend on the density and dynamics of metal-coordinated interaction ...

2021

Extracellular Matrix Production by Mesenchymal Stromal Cells in Hydrogels Facilitates Cell Spreading and Is Inhibited by FGF-2

Martin Ehrbar, Queralt Vallmajó Martín

In native tissues, the interaction between cells and the surrounding extracellular matrix (ECM) is reciprocal, as cells not only receive signals from the ECM but also actively remodel it through secretion of cell-derived ECM. However, very little is known ...

2020

Multifunctional hybrid alginate-based hydrogels for cell immobilization

Luca Szabó

Cell therapy could be a solution for many diseases that currently pose a huge health burden on patients. Especially, cell therapies based on cell microencapsulation are of great interest. Immunoprotection of cells would allow to avoid the need for immunosu ...

EPFL2020

Volumetric Bioprinting of Complex Living-Tissue Constructs within Seconds

Christophe Moser, Damien Claude-Marie Loterie, Paul Delrot, Yang Li, Yang Li

Biofabrication technologies, including stereolithography and extrusion-based printing, are revolutionizing the creation of complex engineered tissues. The current paradigm in bioprinting relies on the additive layer-by-layer deposition and assembly of repe ...

Wiley2019

Engineering Dynamic Hydrogels For In Vitro Organoid Culture

Delphine Lorraine Perle Blondel

Over the past decade, methods to culture stem cells in three dimensions have opened up a plethora of new opportunities for basic and translational research in the life sciences. In particular, the use of natural extracellular matrix (ECM) surrogates, such ...

EPFL2019

Development of functionalized alginate-based hydrogels to reduce fibrosis in the transplantation of microencapsulated cells

François Rémi Pierre Noverraz

Nowadays, the development of cell therapy relies mainly on the advances made toward cell microencapsulation which allows to evade the need for immunosuppression during cell transplantation. Among the materials considered for cell encapsulation, hydrogels d ...

EPFL2018

Synthesis strategies to extend the variety of alginate-based hybrid hydrogels for cell microencapsulation

Jutta Christine Wandrey, Sandrine Gerber, François Rémi Pierre Noverraz, Solène Marcelle Françoise Marie Passemard, Luca Szabó

The production of hydrogel microspheres (MS) for cell immobilization, maintaining the favorable properties of alginate gels but presenting enhanced performance in terms of in vivo durability and physical properties, is desirable to extend the therapeutic p ...

American Chemical Society2017

In vitro modeling of complex microenvironmental regulation of stem cells

Yoji Tabata

Although stem cells hold tremendous potential for clinical applications, their in vitro manipulation remains very challenging. In vivo, stem cells reside in intricate 3D microenvironments, termed niche, in which many local and systemic extrinsic factors ar ...

EPFL2017

Stem cell niche engineering through photopatterning and microfluidics

Laura Kolb

The application of stem cells in drug screening and regenerative therapy has led to important advances in basic biology and biomedicine. Such strategies require high cell numbers and the efficient maturation into faithful functional organ or tissue units. ...

EPFL2016

Nano Fibrillated Cellulose Based Composite Hydrogels for an Injectable Intervertebral Disc Implant

Azadeh Khoushabi

Replacing the gel-like central part of the intervertebral disc (IVD), so-called nucleus pulposus (NP), via a minimally invasive surgery is one of the most recent approaches in the lower back pain treatments. An appropriate biomaterial for NP replacement (N ...

EPFL2016

A photopolymerized composite hydrogel and surgical implanting tool for a nucleus pulposus replacement

Dominique Pioletti, Pierre-Etienne Bourban, Andreas Schmocker, Azadeh Khoushabi, Christophe Moser

Nucleus pulposus replacements have been subjected to highly controversial discussions over the last 40 years. Their use has not yet resulted in a positive outcome to treat herniated disc or degenerated disc disease. The main reason is that not a single imp ...

Elsevier2016

Pancreatic islet cells isolation and transplantation into the bone marrow

Sandrine Gerber

Bone marrow is currently being considered as an alternative site for pancreatic islet transplantation. The goal of the present review is to report preclinical and clinical studies taking advantage of this new implantation site. Preclinical studies in mice ...

2016

Tunable and cell-responsive 3D poly(ethylene glycol) microenvironments for the development of tissue models

Stéphanie Elisabeth Metzger

The recapitulation of tissue organization and function in vitro is one of the main objectives of tissue engineering. Proper tissue function depends on the spatial assembly and interactions between key components such as cells, growth factors, signaling cue ...

EPFL2016

Bioengineering approaches to emulate the stem cell niche

Sylke Höhnel

Stem cell therapies hold tremendous potential for tissue and organ regeneration. Yet, there remains significant need for better ex vivo culture and manipulation methods. On the one hand, many tissue-specific stem cells cannot be propagated without causing ...

EPFL2015