Personne

Martin Ehrbar

Publications associées (22)

Smart Hydrogels for the Augmentation of Bone Regeneration by Endogenous Mesenchymal Progenitor Cell Recruitment

Matthias Lütolf, Olaia Maria Naveiras Torres-Quiroga, Aline Roch, Philipp Sebastian Lienemann, Stéphanie Elisabeth Metzger, Martin Ehrbar, Queralt Vallmajó Martín, Vincent Milleret, Manuel Koch, Panagiota Papageorgiou

The treatment of bone defects with recombinant bone morphogenetic protein-2 (BMP-2) requires high doses precluding broad clinical application. Here, a bioengineering approach is presented that strongly improves low-dose BMP-2-based bone regeneration by mob ...

WILEY2020

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

PEG/HA Hybrid Hydrogels for Biologically and Mechanically Tailorable Bone Marrow Organoids

Nicolas Antoine Vincent Broguiere, Martin Ehrbar, Queralt Vallmajó Martín

Bone marrow (BM) organoids provide powerful tools to study the vital interplay between the BM microenvironment and resident cells. Current biomaterials, however, are limited in terms of versatility for independently studying the biochemical and biophysical ...

WILEY-V C H VERLAG GMBH2020

The NAD-Booster Nicotinamide Riboside Potently Stimulates Hematopoiesis through Increased Mitochondrial Clearance

Johan Auwerx, Matthias Lütolf, Bart Deplancke, Carlos Canto Alvarez, Olaia Maria Naveiras Torres-Quiroga, George Coukos, Aurélien Laurent Jean-Charles Oggier, Loïc Tauzin, Dongryeol Ryu, Eija Riitta Pirinen, Pedro Romero, Vasco Ledebur de Antas de Campos, Mukul Girotra, Joanna Ratajczak, Josefine Catharina Pedersen Tratwal, Nicola Vannini, Pernille Yde Rainer, Gennady Nikitin, Federico Sizzano, Simone Ragusa, Vincent Trachsel, Sonja Giger, Shanti Rojas-Sutterlin, Yannick Lionel Yersin, Martin Ehrbar

It has been recently shown that increased oxidative phosphorylation, as reflected by increased mitochondrial activity, together with impairment of the mitochondrial stress response, can severely compromise hematopoietic stem cell (HSC) regeneration. Here w ...

CELL PRESS2019

Label-Free Quantification Proteomics for the Identification of Mesenchymal Stromal Cell Matrisome Inside 3D Poly(Ethylene Glycol) Hydrogels

Matthias Lütolf, Yannick Robert Devaud, Martin Ehrbar

Cells modulate the functional properties of their environment by depositing extracellular matrix (ECM) proteins during biological processes in vivo and in vitro. Despite the ECMs central role in tissue formation, its quantification in hydrogels like Matrig ...

WILEY2018

Locally controlling mesenchymal stem cell morphogenesis by 3D PDGF-BB gradients towards the establishment of an in vitro perivascular niche

Matthias Lütolf, Philipp Sebastian Lienemann, Yannick Robert Devaud, Martin Ehrbar, Vincent Milleret

The perivascular niche is a complex microenvironment containing mesenchymal stem cells (MSCs), among other perivascular cells, as well as temporally organized biochemical and biophysical gradients. Due to a lack of conclusive phenotypic markers, MSCs' iden ...

Royal Soc Chemistry2015

Engineered cell instructive matrices for fetal membrane healing

Martin Ehrbar

Iatrogenic preterm prelabour rupture of fetal membranes (iPPROM) occurs in 6-45% of the cases after fetoscopic procedures, posing a significant threat to fetal survival and well-being. The number of diagnostic and therapeutic prenatal interventions availab ...

Elsevier Sci Ltd2015

Long-lasting fibrin matrices ensure stable and functional angiogenesis by highly tunable, sustained delivery of recombinant VEGF(164)

Veronica Sacchi, Jeffrey Alan Hubbell, Mikaël Martino, Kristen Lorentz, Martin Ehrbar, Elena Groppa

Clinical trials of therapeutic angiogenesis by vascular endothelial growth factor (VEGF) gene delivery failed to show efficacy. Major challenges include the need to precisely control in vivo distribution of growth factor dose and duration of expression. Re ...

Natl Acad Sciences2014

In situ cell manipulation through enzymatic hydrogel photopatterning

Matthias Lütolf, Jeffrey Alan Hubbell, Mikaël Martino, Katarzyna Mosiewicz, Laura Kolb, Martin Ehrbar

The physicochemical properties of hydrogels can be manipulated in both space and time through the controlled application of a light beam. However, methods for hydrogel photopatterning either fail to maintain the bioactivity of fragile proteins and are thus ...

Nature Publishing Group2013

A generic strategy for pharmacological caging of growth factors for tissue engineering

Matthias Lütolf, Philipp Sebastian Lienemann, Martin Ehrbar

The caging of small molecules has revolutionized biological research by providing a means to regulate a wide range of processes. Here we report on a generic pharmacological method to cage proteins in a similar fashion. The present approach is of value in b ...

2013

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