PUBLICATION
Mutation in protein disulfide isomerase A3 causes neurodevelopmental defects by disturbing endoplasmic reticulum proteostasis
- Authors
- Bilches Medinas, D., Malik, S., Yıldız-Bölükbaşı, E., Borgonovo, J., Saaranen, M.J., Urra, H., Pulgar, E., Afzal, M., Contreras, D., Wright, M.T., Bodaleo, F., Quiroz, G., Rozas, P., Mumtaz, S., Díaz, R., Rozas, C., Cabral-Miranda, F., Piña, R., Valenzuela, V., Uyan, O., Reardon, C., Woehlbier, U., Brown, R.H., Sena-Esteves, M., Gonzalez-Billault, C., Morales, B., Plate, L., Ruddock, L.W., Concha, M.L., Hetz, C., Tolun, A.
- ID
- ZDB-PUB-211216-10
- Date
- 2021
- Source
- The EMBO journal 41(2): e105531 (Journal)
- Registered Authors
- Keywords
- actin cytoskeleton, cell adhesion, integrins, intellectual disability, protein disulfide isomerase
- MeSH Terms
-
- Adolescent
- Adult
- Animals
- Axons/metabolism
- Axons/pathology
- Cell Adhesion
- Cells, Cultured
- Child
- Cytoskeleton/metabolism
- Developmental Disabilities/genetics*
- Developmental Disabilities/metabolism
- Developmental Disabilities/pathology
- Endoplasmic Reticulum/metabolism*
- Female
- Hippocampus/metabolism
- Hippocampus/pathology
- Humans
- Integrins/metabolism
- Male
- Mice
- Mice, Inbred C57BL
- Mutation, Missense
- Neuronal Outgrowth
- Neuronal Plasticity
- Pedigree
- Protein Disulfide-Isomerases/genetics*
- Protein Disulfide-Isomerases/metabolism
- Proteostasis*
- Zebrafish
- PubMed
- 34904718 Full text @ EMBO J.
Citation
Bilches Medinas, D., Malik, S., Yıldız-Bölükbaşı, E., Borgonovo, J., Saaranen, M.J., Urra, H., Pulgar, E., Afzal, M., Contreras, D., Wright, M.T., Bodaleo, F., Quiroz, G., Rozas, P., Mumtaz, S., Díaz, R., Rozas, C., Cabral-Miranda, F., Piña, R., Valenzuela, V., Uyan, O., Reardon, C., Woehlbier, U., Brown, R.H., Sena-Esteves, M., Gonzalez-Billault, C., Morales, B., Plate, L., Ruddock, L.W., Concha, M.L., Hetz, C., Tolun, A. (2021) Mutation in protein disulfide isomerase A3 causes neurodevelopmental defects by disturbing endoplasmic reticulum proteostasis. The EMBO journal. 41(2):e105531.
Abstract
Recessive gene mutations underlie many developmental disorders and often lead to disabling neurological problems. Here, we report identification of a homozygous c.170G>A (p.Cys57Tyr or C57Y) mutation in the gene coding for protein disulfide isomerase A3 (PDIA3, also known as ERp57), an enzyme that catalyzes formation of disulfide bonds in the endoplasmic reticulum, to be associated with syndromic intellectual disability. Experiments in zebrafish embryos show that PDIA3C57Y expression is pathogenic and causes developmental defects such as axonal disorganization as well as skeletal abnormalities. Expression of PDIA3C57Y in the mouse hippocampus results in impaired synaptic plasticity and memory consolidation. Proteomic and functional analyses reveal that PDIA3C57Y expression leads to dysregulation of cell adhesion and actin cytoskeleton dynamics, associated with altered integrin biogenesis and reduced neuritogenesis. Biochemical studies show that PDIA3C57Y has decreased catalytic activity and forms disulfide-crosslinked aggregates that abnormally interact with chaperones in the endoplasmic reticulum. Thus, rare disease gene variant can provide insight into how perturbations of neuronal proteostasis can affect the function of the nervous system.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping