Mechanisms Underlying Hox-Mediated Transcriptional Outcomes

Metazoans differentially express multiple Hox transcription factors to specify diverse cell fates along the developing anterior-posterior axis. Two challenges arise when trying to understand how the Hox transcription factors regulate the required target genes for morphogenesis: First, how does each...

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Autores principales: Brittany Cain, Brian Gebelein
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Lenguaje:EN
Publicado: Frontiers Media S.A. 2021
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Hox
Acceso en línea:https://doaj.org/article/a39a6c53f32948629abdae6a3fd06b87
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spelling oai:doaj.org-article:a39a6c53f32948629abdae6a3fd06b872021-11-16T05:38:36ZMechanisms Underlying Hox-Mediated Transcriptional Outcomes2296-634X10.3389/fcell.2021.787339https://doaj.org/article/a39a6c53f32948629abdae6a3fd06b872021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fcell.2021.787339/fullhttps://doaj.org/toc/2296-634XMetazoans differentially express multiple Hox transcription factors to specify diverse cell fates along the developing anterior-posterior axis. Two challenges arise when trying to understand how the Hox transcription factors regulate the required target genes for morphogenesis: First, how does each Hox factor differ from one another to accurately activate and repress target genes required for the formation of distinct segment and regional identities? Second, how can a Hox factor that is broadly expressed in many tissues within a segment impact the development of specific organs by regulating target genes in a cell type-specific manner? In this review, we highlight how recent genomic, interactome, and cis-regulatory studies are providing new insights into answering these two questions. Collectively, these studies suggest that Hox factors may differentially modify the chromatin of gene targets as well as utilize numerous interactions with additional co-activators, co-repressors, and sequence-specific transcription factors to achieve accurate segment and cell type-specific transcriptional outcomes.Brittany CainBrian GebeleinBrian GebeleinFrontiers Media S.A.articleHoxtranscription factorchromatin accessibilitycis-regulatory modules (CRMs)protein-protein interactionBiology (General)QH301-705.5ENFrontiers in Cell and Developmental Biology, Vol 9 (2021)
institution DOAJ
collection DOAJ
language EN
topic Hox
transcription factor
chromatin accessibility
cis-regulatory modules (CRMs)
protein-protein interaction
Biology (General)
QH301-705.5
spellingShingle Hox
transcription factor
chromatin accessibility
cis-regulatory modules (CRMs)
protein-protein interaction
Biology (General)
QH301-705.5
Brittany Cain
Brian Gebelein
Brian Gebelein
Mechanisms Underlying Hox-Mediated Transcriptional Outcomes
description Metazoans differentially express multiple Hox transcription factors to specify diverse cell fates along the developing anterior-posterior axis. Two challenges arise when trying to understand how the Hox transcription factors regulate the required target genes for morphogenesis: First, how does each Hox factor differ from one another to accurately activate and repress target genes required for the formation of distinct segment and regional identities? Second, how can a Hox factor that is broadly expressed in many tissues within a segment impact the development of specific organs by regulating target genes in a cell type-specific manner? In this review, we highlight how recent genomic, interactome, and cis-regulatory studies are providing new insights into answering these two questions. Collectively, these studies suggest that Hox factors may differentially modify the chromatin of gene targets as well as utilize numerous interactions with additional co-activators, co-repressors, and sequence-specific transcription factors to achieve accurate segment and cell type-specific transcriptional outcomes.
format article
author Brittany Cain
Brian Gebelein
Brian Gebelein
author_facet Brittany Cain
Brian Gebelein
Brian Gebelein
author_sort Brittany Cain
title Mechanisms Underlying Hox-Mediated Transcriptional Outcomes
title_short Mechanisms Underlying Hox-Mediated Transcriptional Outcomes
title_full Mechanisms Underlying Hox-Mediated Transcriptional Outcomes
title_fullStr Mechanisms Underlying Hox-Mediated Transcriptional Outcomes
title_full_unstemmed Mechanisms Underlying Hox-Mediated Transcriptional Outcomes
title_sort mechanisms underlying hox-mediated transcriptional outcomes
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/a39a6c53f32948629abdae6a3fd06b87
work_keys_str_mv AT brittanycain mechanismsunderlyinghoxmediatedtranscriptionaloutcomes
AT briangebelein mechanismsunderlyinghoxmediatedtranscriptionaloutcomes
AT briangebelein mechanismsunderlyinghoxmediatedtranscriptionaloutcomes
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