Publications related to Sonic hedgehog protein

Multi-species atlas resolves an axolotl limb development and regeneration paradox

Can Aztekin, Evangelia Skoufa, Jixing Zhong, Georgios Tsissios

Humans and other tetrapods are considered to require apical-ectodermal-ridge (AER) cells for limb development, and AER-like cells are suggested to be re-formed to initiate limb regeneration. Paradoxically, the presence of AER in the axolotl, a primary mode ...

Nature Portfolio2023

Puckered and JNK signaling in pioneer neurons coordinates the motor activity of the Drosophila embryo

Samuel William Vernon

Central nervous system organogenesis is a complex process that obeys precise architectural rules. The impact that nervous system architecture may have on its functionality remains, however, relatively unexplored. To clarify this problem, we analyze the dev ...

Nature Portfolio2023

Reaction wavefront theory of notochord segment patterning

Andrew Charles Oates

The vertebrate axis is segmented into repetitive structures, the vertebrae. In fish, these segmented structures are thought to form from the paraxial mesoderm and the adjacent notochord. Recent work revealed an autonomous patterning mechanism in the zebraf ...

FRONTIERS MEDIA SA2022

In vitro endoderm emergence and self-organisation in the absence of extraembryonic tissues and embryonic architecture

Stefano Davide Vianello

In humans, mice, and other mammals key internal organs such as the gut, the lungs, the pancreas, and the liver all derive from the same embryonic tissue: the endoderm. The development of all of these structures thus depends on a same set of early cells, an ...

EPFL2022

Molecular profiling of stem cell-derived retinal pigment epithelial cell differentiation established for clinical translation

Gioele La Manno, Alex Russell Lederer, Irina Khven

Human embryonic stem cell-derived retinal pigment epithelial cells (hESC-RPE) are a promising cell source to treat age-related macular degeneration (AMD). Despite several ongoing clinical studies, a detailed mapping of transient cellular states during in v ...

CELL PRESS2022

Fryns type mesomelic dysplasia of the upper limbs caused by inverted duplications of the HOXD gene cluster

Denis Duboule

The HoxD cluster is critical for vertebrate limb development. Enhancers located in both the telomeric and centromeric gene deserts flanking the cluster regulate the transcription of HoxD genes. In rare patients, duplications, balanced translocations or inv ...

NATURE PUBLISHING GROUP2020

Patterning and mechanics of somite boundaries in zebrafish embryos

Andrew Charles Oates, Sundar Ram Naganathan

The body axis of vertebrates is subdivided into repetitive compartments called somites, which give rise primarily to the segmented architecture of the musculoskeletal system in the adult body. Somites form in a sequential and rhythmic manner in embryos and ...

2020

Engineered signaling centers for the spatially controlled patterning of human pluripotent stem cells

Matthias Lütolf, Felix Naef, Yoji Tabata, Eric Paquet, François Réal Rivest, Ambroise Roger Vuaridel, Andrea Manfrin

Signaling centers, localized groups of cells that secrete morphogens, play a key role in early development and organogenesis by orchestrating spatial cell fate patterning. Here we present a microfluidic approach that exposes human pluripotent stem cell (hP ...

NATURE PUBLISHING GROUP2019

Tissue-specific enhancer repression through molecular integration of cell signaling inputs

Bart Deplancke

Drosophila leg morphogenesis occurs under the control of a relatively well-known genetic cascade, which mobilizes both cell signaling pathways and tissue-specific transcription factors. However, their cross-regulatory interactions, deployed to refine leg p ...

2017

Integration of Shh and Fgf signaling in controlling Hox gene expression in cultured limb cells

Denis Duboule, Guillaume Andrey, Patrick Schorderet, Nayuta Yakushiji

During embryonic development, fields of progenitor cells form complex structures through dynamic interactions with external signaling molecules. How complex signaling inputs are integrated to yield appropriate gene expression responses is poorly understood ...

National Academy of Sciences2017

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

Translating Hedgehog in Cancer: Controlling Protein Synthesis

Davide D'Amico

Developmental Hedgehog (Hh) signaling is found deregulated in a broad spectrum of human malignancies and, thus, is an attractive target for cancer therapy. Currently available Hh inhibitors have shown the rapid occurrence of drug resistance, due to altered ...

Elsevier Sci Ltd2016

Faster embryonic segmentation through elevated Delta-Notch signalling

Andrew Charles Oates

An important step in understanding biological rhythms is the control of period. A multicellular, rhythmic patterning system termed the segmentation clock is thought to govern the sequential production of the vertebrate embryo's body segments, the somites. ...

Nature Publishing Group2016

Sequential pattern formation governed by signaling gradients

Andrew Charles Oates

Rhythmic and sequential segmentation of the embryonic body plan is a vital developmental patterning process in all vertebrate species. However, a theoretical framework capturing the emergence of dynamic patterns of gene expression from the interplay of cel ...

2016

Dynamic structure and protein expression of the live embryonic heart captured by 2-photon light sheet microscopy and retrospective registration

Michael Stefan Daniel Liebling

We present an imaging and image reconstruction pipeline that captures the dynamic three-dimensional beating motion of the live embryonic zebrafish heart at subcellular resolution. Live, intact zebrafish embryos were imaged using 2-photon light sheet micros ...

2015

ProNodal acts via FGFR3 to govern duration of Shh expression in the prechordal mesoderm

Daniel Constam

The secreted glycoprotein sonic hedgehog (Shh) is expressed in the prechordal mesoderm, where it plays a crucial role in induction and patterning of the ventral forebrain. Currently little is known about how Shh is regulated in prechordal tissue. Here we s ...

Company of Biologists2015

Nanoscale spatial organization of the HoxD gene cluster in distinct transcriptional states

Denis Duboule, Suliana Manley, Aleksandr Benke, Pierre Raymond Fabre

Chromatin condensation plays an important role in the regulation of gene expression. Recently, it was shown that the transcriptional activation of Hoxd genes during vertebrate digit development involves modifications in 3D interactions within and around th ...

2015

Wnt directs the endosomal flux of LDL-derived cholesterol and lipid droplet homeostasis

Olivier Martin, Gerardo Turcatti, Marc Chambon, Nicolas Jean Philippe Guex

The Wnt pathway, which controls crucial steps of the development and differentiation programs, has been proposed to influence lipid storage and homeostasis. In this paper, using an unbiased strategy based on high-content genome-wide RNAi screens that monit ...

Nature Publishing Group2015

Regulatory Switches Underlie Hoxd Gene Activation in Tetrapod Limbs

Guillaume Andrey

Accurate spatio-temporal control of Hox cluster genes expression is critical for the proper organization of body structures during vertebrate embryogenesis. In the limbs, Hoxd genes are critical in setting up the proximodistal and anteroposterior axes. Sev ...

EPFL2013

Hedgehog pathway regulators influence cervical cancer cell proliferation, survival and migration

Peter Martin Beard, Ivana Samarzija

Human papillomavirus (HPV) infection is considered to be a primary hit that causes cervical cancer. However, infection with this agent, although needed, is not sufficient for a cancer to develop. Additional cellular changes are required to complement the a ...

Academic Press Inc Elsevier Science2012