4.7 Review

Epigenetic Regulation of Endothelial Cell Lineages During Zebrafish Development-New Insights From Technical Advances

Journal

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fcell.2022.891538

Keywords

blood endothelial cells; lymphatic endothelial cells; epigenetics; ATAC-seq; ChIP-seq; enhancers; conserved non-coding elements; chromatin structure

Funding

  1. Wallenberg Academy Fellowship [2017.0144]
  2. Vetenskapsadet [VR-MH-2016-01437]
  3. Jeanssons Foundation
  4. Birmingham Fellowship (University of Birmingham, United Kingdom)
  5. Ragnar Soederbergs Fellowship [M13/17]

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Epigenetic regulation plays a crucial role in the spatiotemporal regulation of gene expression, particularly in the field of vascular biology in zebrafish. The latest technologies enable researchers to assess genome-wide epigenetic modifications and validate the activity of cis-regulatory elements in zebrafish models. This research has led to breakthroughs in identifying and characterizing key enhancers of important vascular genes.
Epigenetic regulation is integral in orchestrating the spatiotemporal regulation of gene expression which underlies tissue development. The emergence of new tools to assess genome-wide epigenetic modifications has enabled significant advances in the field of vascular biology in zebrafish. Zebrafish represents a powerful model to investigate the activity of cis-regulatory elements in vivo by combining technologies such as ATAC-seq, ChIP-seq and CUT&Tag with the generation of transgenic lines and live imaging to validate the activity of these regulatory elements. Recently, this approach led to the identification and characterization of key enhancers of important vascular genes, such as gata2a, notch1b and dll4. In this review we will discuss how the latest technologies in epigenetics are being used in the zebrafish to determine chromatin states and assess the function of the cis-regulatory sequences that shape the zebrafish vascular network.

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