Cited by 1,147Bone Metabolism and DiseasesDermatological and Skeletal DisordersBone health and osteoporosis research

Increased bone density in sclerosteosis is due to the deficiency of a novel secreted protein (SOST)

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Balemans, W.·2001·Human Molecular Genetics

Abstract

Sclerosteosis is a progressive sclerosing bone dysplasia with an autosomal recessive mode of inheritance. Radiologically, it is characterized by a generalized hyperostosis and sclerosis leading to a markedly thickened and sclerotic skull, with mandible, ribs, clavicles and all long bones also being affected. Due to narrowing of the foramina of the cranial nerves, facial nerve palsy, hearing loss and atrophy of the optic nerves can occur. Sclerosteosis is clinically and radiologically very similar to van Buchem disease, mainly differentiated by hand malformations and a large stature in sclerosteosis patients. By linkage analysis in one extended van Buchem family and two consanguineous sclerosteosis families we previously mapped both disease genes to the same chromosomal 17q12-q21 region, supporting the hypothesis that both conditions are caused by mutations in the same gene. After reducing the disease critical region to approximately 1 Mb, we used the positional cloning strategy to identify the SOST gene, which is mutated in sclerosteosis patients. This new gene encodes a protein with a signal peptide for secretion and a cysteine-knot motif. Two nonsense mutations and one splice site mutation were identified in sclerosteosis patients, but no mutations were found in a fourth sclerosteosis patient nor in the patients from the van Buchem family. As the three disease-causing mutations lead to loss of function of the SOST protein resulting in the formation of massive amounts of normal bone throughout life, the physiological role of SOST is most likely the suppression of bone formation. Therefore, this gene might become an important tool in the development of therapeutic strategies for osteoporosis.

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Crossref · 10.1093/hmg/10.5.537

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  • SOST inactivating mutations cause Van Buchem disease or sclerosteosis, both high-bone-mass disorders.

    “Inactivating mutations of this gene can produce the high-bone-mass disorder Van Buchem disease or sclerosteosis”

    From Pathogenesis of osteoporosis: concepts, conflicts, and prospects (2005) · cites this paper as [73]

    The Introduction and Discussion identify loss-of-function SOST mutations as causative for sclerosteosis, a disorder of increased bone formation. The Mutation analysis section found no SOST mutation in the Dutch van Buchem family; the Discussion proposes a regulatory explanation but does not establish that SOST-inactivating mutations cause van Buchem disease. Page numbers are unavailable in our copy. (LLM, conf=0.90)

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  • Mutations in genes that have highly enriched expression in osteocytes cause rare bone and mineral disorders.

    “Mutations in genes that have highly enriched expression in osteocytes cause rare bone and mineral disorders.”

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Research works printed but not linked: 2

  1. Witkop, C.J. (1965) Genetic diseases of the oral cavity. In Tiecke, R.W. (ed.), Oral Pathology. McGraw-Hill, New York, NY, pp. 834-843.
  2. Van Buchem, F.S.P., Prick, J.J.G. and Jaspar, H.H.J. (1976) Hyperostosis corticalis generalisata familiaris (van Buchem's disease). In Excerpta Medica. American Elsevier Publishing, New York, NY, pp. 1-205.

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Authors
Balemans, W.
Affiliations
F. Hoffmann-La Roche AG (CH)
Corresponding author
Balemans, W.
Venue
Human Molecular Genetics
Published
2001-03-01
Volume
10
Issue
5
Pages
537-543
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2119934014
Cited by
1,147
References
36
Citations by year
2026: 19 · 2025: 21 · 2024: 34 · 2023: 33 · 2022: 41 · 2021: 64 · 2020: 60 · 2019: 49 · 2018: 48 · 2017: 70 · 2016: 71 · 2015: 74 · 2014: 72 · 2013: 83 · 2012: 68
FWCI
5.82
Type
journal article
Language
en
Open access
Locations
  • Human Molecular Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (publishedVersion, other-oa)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (publishedVersion)
  • reroDoc Digital Library (submittedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion)
Funders
  • Fonds Wetenschappelijk Onderzoek
  • Universiteit Antwerpen
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Dermatological and Skeletal Disorders
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
Keywords
sclerosteosis, SOST gene, sclerostin, bone mineral density, bone formation regulation, van Buchem disease, positional cloning, nonsense mutation, splice site mutation, loss-of-function mutations, osteoporosis treatment, consanguineous family
MeSH terms
Amino Acid Sequence, Base Sequence, Chromosome Mapping, Chromosomes, Human, Pair 17, DNA Mutational Analysis, Genetic Markers, Humans, Genetic Linkage, Molecular Sequence Data, Osteochondrodysplasias, Protein Conformation, Proteins, RNA, Messenger, Bone Density, Sequence Homology, Amino Acid, DNA, Complementary, Bone Morphogenetic Proteins, Adaptor Proteins, Signal Transducing

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