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Long-range enhancer-promoter interactions in the HoxD complex

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HOX13-dependent chromatin accessibility underlies the transition towards the digit development program

Alexandre Gauthier Aurèle Mayran

Hox genes encode transcription factors (TFs) that establish morphological diversity in the developing embryo. The similar DNA-binding motifs of the various HOX TFs contrast with the wide-range of HOX-dependent genetic programs. The influence of the chromat ...

2020

Analysis of long-range gene regulation at the HoxD locus

Ana Rita De Carvalho Amândio Lhopitallier

Hoxd genes are essential for the development of the various body axes in vertebrates and hence the underlying regulatory mechanisms are of paramount importance. Among these various mechanisms are long-range acting enhancers, which are located in the two ad ...

EPFL2019

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Background The spatial organization of the mammalian genome relies upon the formation of chromatin domains of various scales. At the level of gene regulation in cis, collections of enhancer sequences define large regulatory landscapes that usually match wi ...

2019

Cell-free gene-regulatory network engineering with synthetic transcription factors

Sebastian Maerkl, Zoe Newell Swank, Nadanai Laohakunakorn

Gene-regulatory networks are ubiquitous in nature and critical for bottom-up engineering of synthetic networks. Transcriptional repression is a fundamental function that can be tuned at the level of DNA, protein, and cooperative protein-protein interaction ...

2019

A Comprehensive Drosophila melanogaster Transcription Factor Interactome

Bart Deplancke, Riccardo Dainese, Jean-Daniel Feuz, Sachi Iiyama Inukai

Combinatorial interactions among transcription factors (TFs) play essential roles in generating gene expression specificity and diversity in metazoans. Using yeast 2-hybrid (Y2H) assays on nearly all sequence-specific Drosophila TFs, we identified 1,983 pr ...

CELL PRESS2019

The variability in transcription factor concentration among cells is an important developmental determinant, yet how variability is controlled remains poorly understood. Studies of variability have focused predominantly on monitoring mRNA production noise. ...

The Company of Biologists2019

Coordinated Hoxd genes expression during embryogenesis is dependent on a strict disposition of genes and polarized regulators within the HoxD cluster

Fabrice Daniel Darbellay

HOX transcription factors determine the identity of body regions along the rostro-caudal axis during bilaterian embryogenesis. In vertebrates Hox genes distinctively lie organized in dense clusters, each typically composed of a dozen paralogous transcripti ...

EPFL2018

Heterogeneous combinatorial expression of Hoxd genes in single cells during limb development

Denis Duboule, Marion Leleu, Pierre Raymond Fabre

Background: Global analyses of gene expression during development reveal specific transcription patterns associated with the emergence of various cell types, tissues, and organs. These heterogeneous patterns are instrumental to ensure the proper formation ...

BMC2018

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In all tetrapods examined thus far, the development and patterning of limbs require the activation of gene members of the HoxD cluster. In mammals, they are regulated by a complex bimodal process that controls first the proximal patterning and then the dis ...

PUBLIC LIBRARY SCIENCE2018

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