Advanced search

A homozygous pathogenic missense variant broadens the phenotypic and mutational spectrum of CREB3L1-related osteogenesis imperfecta

Brecht Guillemyn (UGent) , Hülya Kayserili, Lynn Demuynck (UGent) , Patrick Sips (UGent) , Anne De Paepe (UGent) , Delfien Syx (UGent) , Paul Coucke (UGent) , Fransiska Malfait (UGent) and Sofie Symoens (UGent)
Author
Organization
Abstract
The cyclic adenosine monophosphate (AMP) responsive element binding protein 3-like 1 (CREB3L1) gene codes for the endoplasmic reticulum stress transducer old astrocyte specifically induced substance (OASIS), which has an important role in osteoblast differentiation during bone development. Deficiency of OASIS is linked to a severe form of autosomal recessive osteogenesis imperfecta (OI), but only few patients have been reported. We identified the first homozygous pathogenic missense variant (p.(Ala304Val)) in a patient with lethal OI, which is located within the highly conserved basic leucine zipper domain, four amino acids upstream of the DNA binding domain. In vitro structural modeling and luciferase assays demonstrate that this missense variant affects a critical residue in this functional domain, thereby decreasing the type I collagen transcriptional binding ability. In addition, overexpression of the mutant OASIS protein leads to decreased transcription of the SEC23A and SEC24D genes, which code for components of the coat protein complex type II (COPII), and aberrant OASIS signaling also results in decreased protein levels of SEC24D. Our findings therefore provide additional proof of the potential involvement of the COPII secretory complex in the context of bone-associated disease.
Keywords
Genetics(clinical), Genetics, Molecular Biology, General Medicine

Citation

Please use this url to cite or link to this publication:

Chicago
Guillemyn, Brecht, Hülya Kayserili, Lynn Demuynck, Patrick Sips, Anne De Paepe, Delfien Syx, Paul Coucke, Fransiska Malfait, and Sofie Symoens. 2019. “A Homozygous Pathogenic Missense Variant Broadens the Phenotypic and Mutational Spectrum of CREB3L1-related Osteogenesis Imperfecta.” Human Molecular Genetics.
APA
Guillemyn, B., Kayserili, H., Demuynck, L., Sips, P., De Paepe, A., Syx, D., Coucke, P., et al. (2019). A homozygous pathogenic missense variant broadens the phenotypic and mutational spectrum of CREB3L1-related osteogenesis imperfecta. Human Molecular Genetics.
Vancouver
1.
Guillemyn B, Kayserili H, Demuynck L, Sips P, De Paepe A, Syx D, et al. A homozygous pathogenic missense variant broadens the phenotypic and mutational spectrum of CREB3L1-related osteogenesis imperfecta. Human Molecular Genetics. Oxford University Press (OUP); 2019;
MLA
Guillemyn, Brecht et al. “A Homozygous Pathogenic Missense Variant Broadens the Phenotypic and Mutational Spectrum of CREB3L1-related Osteogenesis Imperfecta.” Human Molecular Genetics (2019): n. pag. Print.
@article{8602341,
  abstract     = {The cyclic adenosine monophosphate (AMP) responsive element binding protein 3-like 1 (CREB3L1) gene codes for the endoplasmic reticulum stress transducer old astrocyte specifically induced substance (OASIS), which has an important role in osteoblast differentiation during bone development. Deficiency of OASIS is linked to a severe form of autosomal recessive osteogenesis imperfecta (OI), but only few patients have been reported. We identified the first homozygous pathogenic missense variant (p.(Ala304Val)) in a patient with lethal OI, which is located within the highly conserved basic leucine zipper domain, four amino acids upstream of the DNA binding domain. In vitro structural modeling and luciferase assays demonstrate that this missense variant affects a critical residue in this functional domain, thereby decreasing the type I collagen transcriptional binding ability. In addition, overexpression of the mutant OASIS protein leads to decreased transcription of the SEC23A and SEC24D genes, which code for components of the coat protein complex type II (COPII), and aberrant OASIS signaling also results in decreased protein levels of SEC24D. Our findings therefore provide additional proof of the potential involvement of the COPII secretory complex in the context of bone-associated disease.},
  author       = {Guillemyn, Brecht and Kayserili, H{\"u}lya and Demuynck, Lynn and Sips, Patrick and De Paepe, Anne and Syx, Delfien and Coucke, Paul and Malfait, Fransiska and Symoens, Sofie},
  issn         = {0964-6906},
  journal      = {Human Molecular Genetics},
  publisher    = {Oxford University Press (OUP)},
  title        = {A homozygous pathogenic missense variant broadens the phenotypic and mutational spectrum of CREB3L1-related osteogenesis imperfecta},
  url          = {http://dx.doi.org/10.1093/hmg/ddz017},
  year         = {2019},
}

Altmetric
View in Altmetric