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Laser Capture Microdissection of Mouse Embryonic Cartilage and Bone for Gene Expression Analysis
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Published on: December 18, 2019

Mutations in SERPINF1 cause osteogenesis imperfecta type VI.

Erica P Homan1, Frank Rauch, Ingo Grafe

  • 1Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.

Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research
|August 10, 2011
PubMed
Summary

Osteogenesis imperfecta type VI is linked to SERPINF1 gene mutations. This discovery reveals a new mechanism involving pigment epithelium-derived factor in bone mineralization disorders.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Biochemistry

Background:

  • Osteogenesis imperfecta (OI) encompasses genetic bone fragility disorders.
  • Mutations in type I procollagen genes or processing genes cause OI.
  • Recessive OI type VI presents with excess unmineralized osteoid, suggesting a unique mechanism.

Observation:

  • A large consanguineous family with OI type VI was studied.
  • Homozygosity mapping and next-generation sequencing were employed.
  • Loss-of-function mutations in SERPINF1 were identified in affected individuals.

Findings:

  • Mutations in serpin peptidase inhibitor, clade F, member 1 (SERPINF1) cause OI type VI.
  • SERPINF1 encodes pigment epithelium-derived factor (PEDF).
  • These findings implicate PEDF dysfunction in OI pathogenesis.

Implications:

  • Loss of PEDF function represents a novel mechanism for Osteogenesis Imperfecta.
  • This highlights SERPINF1's crucial role in bone mineralization.
  • Identifies a new target for understanding and potentially treating OI.