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Temporal colinearity and the phylotypic progression: a basis for the stability of a vertebrate Bauplan and the evolution of morphologies through heterochrony

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Transposable elements and their KRAB/KAP1 controllers broadly regulate transcription in adult human cells

Flavia Marzetta

KAP1 is a universal corepressor for the large family of KRAB-ZFP proteins that coordinates epigenetic silencing of endogenous retroelements (EREs) during early embryonic development. This process is essential not just to prevent replication of EREs, but al ...

EPFL2015

Temporal dynamics and developmental memory of 3D chromatin architecture at Hox gene loci

Denis Duboule, Marion Leleu, Daniël Noordermeer, Patrick Schorderet

Hox genes are essential regulators of embryonic development. Their step-wise transcriptional activation follows their genomic topology and the various states of activation are subsequently memorized into domains of progressively overlapping gene products. ...

Elife Sciences Publications Ltd2014

During development, a properly coordinated expression of Hox genes, within their different genomic clusters is critical for patterning the body plans of many animals with a bilateral symmetry. The fascinating correspondence between the topological organiza ...

Royal Soc2013

The evolution of chordates was accompanied by critical anatomical innovations in craniofacial development, along with the emergence of neural crest cells. The potential of these cells to implement a craniofacial program in part depends upon the (non-)expre ...

Academic Press Inc Elsevier Science2013

A genetic approach to the transcriptional regulation of hox gene clusters

Denis Duboule

The evolution of vertebrate genomes was accompanied by an astounding increase in the complexity of their regulatory modalities. Genetic redundancy resulting from large-scale genome duplications at the base of the chordate tree was repeatedly exploited by t ...

2011

A regulatory archipelago controls hox genes transcription in digits

Denis Duboule

The evolution of digits was an essential step in the success of tetrapods. Among the key players, Hoxd genes are coordinately regulated in developing digits, where they help organize growth and patterns. We identified the distal regulatory sites associated ...

2011

Changes in Hox genes' structure and function during the evolution of the squamate body plan

Denis Duboule

Hox genes are central to the specification of structures along the anterior-posterior body axis, and modifications in their expression have paralleled the emergence of diversity in vertebrate body plans. Here we describe the genomic organization of Hox clu ...

Nature Publishing Group2010

Development of a bacterial biosensor for arsenite detection

Philippe Renaud, Nina Buffi

In order to provide an alternative measurement tool for arsenic contamination, we are developing a sensor that uses agarose beads containing a genetically engineered Escherichia coli strain producing a fluorescent signal in response to arsenite. Beads with ...

2010

Segment number and axial identity in a segmentation clock period mutant.

Andrew Charles Oates

A species-specific number of segments is a hallmark of the vertebrate body plan. The first segmental structures in the vertebrate embryo are the somites, which bud sequentially from the growing presomitic mesoderm (PSM). The Clock and Wavefront model for s ...

2010

Atypical relaxation of structural constraints in Hox gene clusters of the green anole lizard

Denis Duboule

Hox genes control many aspects of embryonic development in metazoans. Previous analyses of this gene family revealed a surprising diversity in terms of gene number and organization between various animal species. In vertebrates, Hox genes are grouped into ...

2009