Multimodal characterization of murine gastruloid development

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Developing new tools to study and program cell fate at the single-cell level

Single-cell transcriptomics (scRNA-seq) started a technological revolution in biology by enabling through the plethora of methods to assess a molecular state of the cell on systems level without the strict necessity of the prior knowledge of the cell state ...

EPFL2021

In vitro modeling of early mouse development

Mehmet Ugur Girgin

Previous attempts to recapitulate embryogenesis in a developmentally relevant context started with aggregates composed of a few thousand ESCs, termed embryoid bodies (EB), that upon induction of differentiation reveal a surprising level of autonomous cell ...

EPFL2020

Wnt-controlled sphingolipids modulate Anthrax Toxin Receptor palmitoylation to regulate oriented mitosis in zebrafish

Françoise Gisou van der Goot Grunberg, Laurence Gouzi Abrami

Oriented cell division is a fundamental mechanism to control asymmetric stem cell division, neural tube elongation and body axis extension, among other processes. During zebrafish gastrulation, when the body axis extends, dorsal epiblast cells display divi ...

Nature Publishing Group2020

Hydrogel-based milliwell arrays for standardized and scalable retinal organoid cultures

Matthias Lütolf, Nathalie Brandenberg

The development of improved methods to culture retinal organoids is relevant for the investigation of mechanisms of retinal development under pathophysiological conditions, for screening of neuroprotective compounds, and for providing a cellular source for ...

Nature Research2020

The Effect of Thiol Structure on Allyl Sulfide Photodegradable Hydrogels and their Application as a Degradable Scaffold for Organoid Passaging

Matthias Lütolf, Nikolche Gjorevski

Intestinal organoids are useful in vitro models for basic and translational studies aimed at understanding and treating disease. However, their routine culture relies on animal-derived matrices that limit translation to clinical applications. In fact, ther ...

Wiley-V C H Verlag Gmbh2020

High-throughput automated organoid culture via stem-cell aggregation in microcavity arrays

Matthias Lütolf, Gerardo Turcatti, Nathalie Brandenberg, George Coukos, Fabien Kuttler, Krisztian Homicsko, Camilla Carla Alma Ceroni, Nikolche Gjorevski

Stem-cell-derived epithelial organoids are routinely used for the biological and biomedical modelling of tissues. However, the complexity, lack of standardization and quality control of stem cell culture in solid extracellular matrices hampers the routine ...

NATURE PUBLISHING GROUP2020

Low-Defect Thiol-Michael Addition Hydrogels as Matrigel Substitutes for Epithelial Organoid Derivation

Matthias Lütolf, Nikolche Gjorevski, Saba Rezakhani

Due to their selective crosslinking chemistry and well-defined mechano-biochemical characteristics, hydrogels crosslinked by thiol-Michael addition reactions have garnered immense interest for 3D cell culture applications. These hydrogels are typically for ...

2020

Primate-restricted KRAB zinc finger proteins and target retrotransposons control gene expression in human neurons

Didier Trono, Bart Deplancke, Priscilla Turelli, Christian Axel Wandall Thorball, Julien Léonard Duc, Charlène Mireille Raymonde Raclot, Alexandre Coudray, Julien Paul André Pontis, Delphine Yvette L Grun, Christopher James Playfoot

In the first days of embryogenesis, transposable element-embedded regulatory sequences (TEeRS) are silenced by Kruppel-associated box (KRAB) zinc finger proteins (KZFPs). Many TEeRS are subsequently co-opted in transcription networks, but how KZFPs influen ...

2020

Comparative Transcriptomics Analyses across Species, Organs, and Developmental Stages Reveal Functionally Constrained lncRNAs

Fabrice Daniel Darbellay, Anamaria Necsulea

The functionality of long noncoding RNAs (lncRNAs) is disputed. In general, lncRNAs are under weak selective pressures, suggesting that the majority of lncRNAs may be nonfunctional. However, although some surveys showed negligible phenotypic effects upon l ...

OXFORD UNIV PRESS2020

Recapitulating macro-scale tissue self-organization through organoid bioprinting

Matthias Lütolf, Moritz Hofer, Mikhail Nikolaev, Jonathan Brassard

A 3D bioprinting approach has been developed to facilitate tissue morphogenesis by directly depositing organoid-forming stem cells in an extracellular matrix, with the ability to generate intestinal epithelia and branched vascular tissue constructs. ...

NATURE RESEARCH2021