The DOI matches its Crossref record; 34 of the 35 references it cites were found in a registry or an index.
A long-range Shh enhancer regulates expression in the developing limb and fin and is associated with preaxial polydactyly
Open accessAbstract
Unequivocal identification of the full composition of a gene is made difficult by the cryptic nature of regulatory elements. Regulatory elements are notoriously difficult to locate and may reside at considerable distances from the transcription units on which they operate and, moreover, may be incorporated into the structure of neighbouring genes. The importance of regulatory mutations as the basis of human abnormalities remains obscure. Here, we show that the chromosome 7q36 associated preaxial polydactyly, a frequently observed congenital limb malformation, results from point mutations in a Shh regulatory element. Shh, normally expressed in the ZPA posteriorly in the limb bud, is expressed in an additional ectopic site at the anterior margin in mouse models of PPD. Our investigations into the basis of the ectopic Shh expression identified the enhancer element that drives normal Shh expression in the ZPA. The regulator, designated ZRS, lies within intron 5 of the Lmbr1 gene 1 Mb from the target gene Shh. The ZRS drives the early spatio-temporal expression pattern in the limb of tetrapods. Despite the morphological differences between limbs and fins, an equivalent regulatory element is found in fish. The ZRS contains point mutations that segregate with polydactyly in four unrelated families with PPD and in the Hx mouse mutant. Thus point mutations residing in long-range regulatory elements are capable of causing congenital abnormalities, and possess the capacity to modify gene activity such that a novel gamut of abnormalities is detected.
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“It soon became clear that enhancers also played vital roles in humans, with non-coding enhancer deletions starting to be linked to severe disease phenotypes such as beta thalassaemia and polydactyly [25–28].”
From Transcriptional enhancers and their communication with gene promoters (2021) · cites this paper as [27]
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“The classic example of this is the Shh ZRS enhancer, which is located within the intron of the Lmbr1 gene approximately 1 megabase distant from Shh [27].”
From Transcriptional enhancers and their communication with gene promoters (2021) · cites this paper as [27]
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“For example, in the mouse genome, the Shh gene and its ZRS (zone of polarizing activity regulatory sequence) enhancer are located about 1 Mb apart [127].”
From Enhancer Function in the 3D Genome (2023) · cites this paper as [127]
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“At least a few enhancers reside at great distances from their target gene (e.g. the ZRS enhancer located 1 Mb from the Shh gene118, and a MYC enhancer located 1.7 Mb downstream119), although most are much more proximal to their target promoters72.”
From Towards a comprehensive catalogue of validated and target-linked human enhancers (2020) · cites this paper as [118]
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Metadata
- Authors
- Lettice, L. A.
- Affiliations
- Western General Hospital (GB)
- Corresponding author
- Lettice, L. A.
- ORCID
- Lettice, L. A.
- Venue
- Human Molecular Genetics
- Publisher
- Oxford University Press (OUP)
- Published
- 2003-07-15
- Volume
- 12
- Issue
- 14
- Pages
- 1725-1735
- ISSN
- 0964-6906 (ISSN-L)
- 1460-2083
- OpenAlex
- W2145144631
- Cited by
- 1,164
- References
- 35
- Citations by year
- 2026: 26 · 2025: 40 · 2024: 50 · 2023: 58 · 2022: 66 · 2021: 78 · 2020: 52 · 2019: 49 · 2018: 50 · 2017: 50 · 2016: 64 · 2015: 56 · 2014: 78 · 2013: 64 · 2012: 60
- FWCI
- 26.20
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Human Molecular Genetics (publishedVersion)
- PubMed (publishedVersion)
- EUR Research Repository (Erasmus University Rotterdam) (publishedVersion)
- Lirias (submittedVersion, other-oa)
- EUR Research Repository (Erasmus University Rotterdam) (submittedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Developmental Biology › Congenital limb and hand anomalies
- 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
- Keywords
- Sonic hedgehog, preaxial polydactyly, limb bud, fin development, zirconium, LMBR1, point mutations, congenital limb anomalies, chromosome 7q36
- MeSH terms
- Zona Pellucida Glycoproteins, Animals, Base Sequence, Chromosomes, Human, Pair 7, Egg Proteins, Enhancer Elements, Genetic, Extremities, Female, Humans, Male, Membrane Glycoproteins, Membrane Proteins, Molecular Sequence Data, Pedigree, Receptors, Cell Surface, Trans-Activators, Polydactyly, Takifugu, Mice, Hedgehog Proteins
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