Cited by 270Genomics and Chromatin DynamicsHedgehog Signaling Pathway StudiesDevelopmental Biology and Gene Regulation

Chromosomal dynamics at the Shh locus: limb bud-specific differential regulation of competence and active transcription

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Amano, Takanori, Sagai, Tomoko, Tanabe, Hideyuki, Mizushina, Yoichi, Nakazawa, Hiromi, Shiroishi, Toshihiko·2009·Developmental Cell

Abstract

The expression of Sonic hedgehog (Shh) in mouse limb buds is regulated by a long-range enhancer 1 Mb upstream of the Shh promoter. We used 3D-FISH and chromosome conformation capture assays to track changes at the Shh locus and found that long-range promoter-enhancer interactions are specific to limb bud tissues competent to express Shh. However, the Shh locus loops out from its chromosome territory only in the posterior limb bud (zone of polarizing activity or ZPA), where Shh expression is active. Notably, while Shh mRNA is detected throughout the ZPA, enhancer-promoter interactions and looping out were only observed in small fractions of ZPA cells. In situ detection of nascent Shh transcripts and unstable EGFP reporters revealed that active Shh transcription is likewise only seen in a small fraction of ZPA cells. These results suggest that chromosome conformation dynamics at the Shh locus allow transient pulses of Shh transcription.

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Crossref · 10.1016/j.devcel.2008.11.011

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  • DNA FISH has been used to characterise enhancer-promoter loops for several developmental genes such as Shh and HoxD.

    “DNA FISH has been used to characterise enhancer–promoter loops for several developmental genes such as Shh and HoxD [303, 304].”
  • Enhancer-promoter contacts are stochastic and probably dynamic in single cells.

    “Enhancer–promoter contacts are stochastic32,37,38 and probably dynamic39 in single cells.”
  • Within the last decade, hematopoietic regulatory elements have been identified that are quite distant from their associated genes, often separated by hundreds of kilobases.

    “Within the last decade, however, hematopoietic regulatory elements have been identified that are quite distant from their associated genes, often separated by hundreds of kilobases (Amano et al., 2009; Mifsud et al., 2015; Sanyal et al., 2012; Schoenfelder et al., 2015).”

    From Unraveling Hematopoiesis through the Lens of Genomics (2020) · cites this paper as Amano et al., 2009

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Authors
Amano, T., Sagai, T., Tanabe, H., Mizushina, Y., Nakazawa, H., & Shiroishi, T.
Affiliations
  • National Institute of Genetics (JP)
  • The Graduate University for Advanced Studies, SOKENDAI (JP)
Corresponding author
Shiroishi, Toshihiko
Venue
Developmental Cell
Publisher
Elsevier BV
Published
2009-01
Volume
16
Issue
1
Pages
47-57
ISSN
1534-5807 (ISSN-L)
OpenAlex
W2067585563
Cited by
268
References
52
Citations by year
2025: 7 · 2024: 7 · 2023: 11 · 2022: 12 · 2021: 8 · 2020: 17 · 2019: 16 · 2018: 17 · 2017: 21 · 2016: 21 · 2015: 18 · 2014: 25 · 2013: 23 · 2012: 25
FWCI
5.49
Type
journal article
Language
en
Open access
Locations
  • Developmental Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by-nc-nd)
  • SOKENDAI (Graduate University for Advanced Studies) (submittedVersion, cc-by-nc-nd)
Funders
Ministry of Education, Culture, Sports, Science and Technology
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Hedgehog Signaling Pathway Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
Sonic hedgehog, limb bud, zone of polarizing activity, long-range enhancers, enhancer-promoter interactions, chromatin looping, 3D genome organization, nascent transcription, transcriptional competence, tissue-specific gene regulation, 3D-FISH, chromosome conformation capture
MeSH terms
Animals, Chromosomes, Enhancer Elements, Genetic, Mice, Inbred C57BL, Morphogenesis, RNA Precursors, Transcription, Genetic, In Situ Hybridization, Fluorescence, Genes, Reporter, Gene Expression Regulation, Developmental, Limb Buds, Mice, Hedgehog Proteins

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