Cited by 302Genomics and Chromatin DynamicsChromatin Remodeling and CancerChromosomal and Genetic Variations

Remote control of gene transcription

West, Adam G., Fraser, Peter·2005·Human Molecular Genetics

Abstract

In this review, we look at the most recent studies of DNA elements that function over long genomic distances to regulate gene transcription and will discuss the mechanisms genes employ to overcome the positive and negative influences of their genomic neighbourhood in order to achieve accurate programmes of expression. Enhancer elements activate high levels of transcription of linked genes from distal locations. Recent technological advances have demonstrated chromatin loop interactions between enhancers and their target promoters. Moreover, there is increasing evidence that these dynamic interactions regulate the repositioning of genes to foci of active transcription within the nucleus. Enhancers have the potential to activate a number of neighbouring genes over a large chromosomal region, hence, their action must be restricted in order to prevent activation of non-target genes. This is achieved by specialized DNA sequences, termed enhancer blockers (or insulators), that interfere with an enhancer's ability to communicate with a target promoter when positioned between the two. Here, we summarize current models of enhancer blocking activity and discuss recent findings of how it can be dynamically regulated. It has become clear that enhancer blocking elements should not be considered only as structural elements on the periphery of gene loci, but as regulatory elements that are crucial to the outcome of gene expression. The transcription potential of a gene can also be susceptible to heterochromatic silencing originating from its chromatin environment. Insulator elements can act as barriers to the spread of heterochromatin. We discuss recent evidence supporting a number of non-exclusive mechanisms of barrier action, which mostly describe the modulation of chromatin structure or modification.

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Crossref · 10.1093/hmg/ddi104

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Authors
West, A. G., & Fraser, P.
Affiliations
Western Infirmary (GB)
Corresponding author
West, Adam G.
Venue
Human Molecular Genetics
Published
2005-04-15
Volume
14
Issue
suppl_1
Pages
R101-R111
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2170211828
Cited by
302
References
113
Citations by year
2025: 1 · 2024: 6 · 2023: 5 · 2022: 5 · 2021: 7 · 2020: 4 · 2019: 6 · 2018: 8 · 2017: 7 · 2016: 10 · 2015: 7 · 2014: 7 · 2013: 14 · 2012: 13
FWCI
3.29
Type
journal article
Language
en
Open access
closed
Locations
  • Human Molecular Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
enhancers, insulators, chromatin looping, enhancer-promoter interactions, gene expression regulation, heterochromatin silencing, chromatin structure, chromatin modification, long-range gene regulation
MeSH terms
Animals, Chromatin, DNA, Enhancer Elements, Genetic, Gene Expression Regulation, Heterochromatin, Humans, Models, Biological, Models, Genetic, Promoter Regions, Genetic, Transcription, Genetic

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