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Artificial niche microarrays for identifying extrinsic cell-fate determinants

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Deciphering Metabolic Regulation of Hematopoietic Stem Cell Fate

Mukul Girotra

Hematopoietic stem cells (HSCs) are responsible for life-long production of all mature blood cells. This unique characteristic makes them an ideal candidate for cell-based therapies to treat various hematological malignancies. Their extensive use in the cl ...

EPFL2015

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

In vitro Fate Mapping of Single Hematopoietic Stem Cells

Aline Roch

The in vitro expansion of hematopoietic stem cells (HSC) for clinical applications is hampered by a rapid loss of HSC blood reconstitution capability in culture. While these rare cells can be stimulated to massively proliferate, cell divisions mostly resul ...

EPFL2014

3D niche microarrays for systems-level analyses of cell fate

Matthias Lütolf, Adrian Ranga, Samy Gobaa, Katarzyna Mosiewicz, Andrea Negro, Yuya Okawa

The behaviour of mammalian cells in a tissue is governed by the three-dimensional (3D) microenvironment and involves a dynamic interplay between biochemical and mechanical signals provided by the extracellular matrix (ECM), cell–cell interactions and solub ...

Nature Publishing Group2014

Spatiotemporal Intracellular Nitric Oxide Signaling Captured Using Internalized, Near-Infrared Fluorescent Carbon Nanotube Nanosensors

Ardemis Anoush Boghossian, Xun Gong

Fluorescent nanosensor probes have suffered from limited mol. recognition and a dearth of strategies for spatial-temporal operation in cell culture. In this work, we spatially imaged the dynamics of nitric oxide (NO) signaling, important in numerous pathol ...

2014

Nanoscale Topography and Chemistry Affect Embryonic Stem Cell Self-Renewal and Early Differentiation

Francesco Stellacci

Adherent cells respond to a wide range of substrate cues, including chemistry, topography, hydrophobicity, and surface energy. The cell-substrate interface is therefore an important design parameter in regenerative medicine and tissue engineering applicati ...

Wiley-Blackwell2013

Microtechnologies to Map the Fate of Single Stem Cells and their Progeny

Stefan Kobel

Since stem cells have the unique ability to produce more of themselves (i.e. to "self-renew") and to generate specialized tissue cells, they are an ideal source of cells for regenerative medicine and in vitro tissue models. In order to fully exploit this p ...

EPFL2012

Hydrogel Microfluidics to Control Stem Cell Fate

Steffen Cosson

Biomolecular signaling is of utmost importance in governing many biological processes such as morphogenesis during tissue development where biomolecules regulate key cell-fate decisions. In vivo, these factors are presented in a spatiotemporally tightly co ...

EPFL2012

Micro-engineering the Cerebral Cortical Cell Niche

Anja Kunze

A major problem in traditional cell culture methods, such as Petri dishes and culture flasks, is the very simplified artificial environment around the cells. Traditional cell culture methods lack features of the native cell niche, such as gradients and cel ...

EPFL2012

Photopatterning of Synthetic Hydrogels

Katarzyna Mosiewicz

In recent years sophisticated biomaterials have made a significant impact on our understanding of cellular behavior, particularly in the fields of stem cell research and tissue engineering. Nevertheless, the promising potential of stem cells for regenerati ...

EPFL2012