Cited by 99Trace Elements in HealthNeurological diseases and metabolismGenomics and Rare Diseases

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.

SLC30A9 mutation affecting intracellular zinc homeostasis causes a novel cerebro-renal syndrome

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Abstract

A novel autosomal recessive cerebro-renal syndrome was identified in consanguineous Bedouin kindred: neurological deterioration was evident as of early age, progressing into severe intellectual disability, profound ataxia, camptocormia and oculomotor apraxia. Brain MRI was normal. Four of the six affected individuals also had early-onset nephropathy with features of tubulo-interstitial nephritis, hypertension and tendency for hyperkalemia, though none had rapid deterioration of renal function. Genome wide linkage analysis identified an ∼18 Mb disease-associated locus on chromosome 4 (maximal logarithm of odds score 4.4 at D4S2971; θ = 0). Whole exome sequencing identified a single mutation in SLC30A9 within this locus, segregating as expected within the kindred and not found in a homozygous state in 300 Bedouin controls. We showed that SLC30A9 (solute carrier family 30 member 9; also known as ZnT-9) is ubiquitously expressed with high levels in cerebellum, skeletal muscle, thymus and kidney. Confocal analysis of SH-SY5Y cells overexpressing SLC30A9 fused to enhanced green fluorescent protein demonstrated vesicular cytosolic localization associated with the endoplasmic reticulum, not co-localizing with endosomal or Golgi markers. SLC30A9 encodes a putative zinc transporter (by similarity) previously associated with Wnt signalling. However, using dual-luciferase reporter assay in SH-SY5Y cells we showed that Wnt signalling was not affected by the mutation. Based on protein modelling, the identified mutation is expected to affect SLC30A9's highly conserved cation efflux domain, putatively disrupting its transmembrane helix structure. Cytosolic Zn2+ measurements in HEK293 cells overexpressing wild-type and mutant SLC30A9 showed lower zinc concentration within mutant rather than wild-type SLC30A9 cells. This suggests that SLC30A9 has zinc transport properties affecting intracellular zinc homeostasis, and that the molecular mechanism of the disease is through defective function of this novel activity of SLC30A9 rather than by a defect in its previously described role in transcriptional activation of Wnt signalling.

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Crossref · 10.1093/brain/awx013

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  • A mutation in the fourth TMD in SLC30A9 was found to cause acute dysregulation of zinc homeostasis in all family members affected by a novel cerebro-renal syndrome with important early neurological deterioration.

    “Previously, a mutation in the fourth TMD in SLC30A9 was found to cause acute dysregulation of zinc homeostasis in all family members affected by a novel cerebro-renal syndrome with important early neurological deterioration [54].”

    From Human genetic adaptation related to cellular zinc homeostasis (2023) · cites this paper as [54]

    The Results (Protein structural predictions and functional analysis; page unavailable) place the mutation in the fourth transmembrane helix and report reduced cytosolic free zinc in cells expressing mutant SLC30A9. The Results (Clinical characterization; page unavailable) describe early neurological deterioration in all six affected individuals. The zinc finding came from transfected cells, not measurements in every affected family member, and the paper does not characterize the dysregulation as acute. (LLM, conf=0.88)

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  • SLC30A9 is moderately expressed in most tissues, but its expression is higher in fetal brain, cerebellum, skeletal muscle, pituitary, thyroid, and kidneys.

    “Although SLC30A9 is moderately expressed in most tissues, its expression is higher in the fetal brain, cerebellum, skeletal muscle, pituitary, thyroid, and kidneys [54].”

    From Human genetic adaptation related to cellular zinc homeostasis (2023) · cites this paper as [54]

    The Results section, “SLC30A9 expression patterns and subcellular localization” (page unavailable), says SLC30A9 is moderately expressed in most tissues examined and highly transcribed in foetal brain, cerebellum, skeletal muscle, and kidney. It does not identify pituitary or thyroid as tissues with higher expression. (LLM, conf=0.90)

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Metadata

Authors
Perez, Y., Shorer, Z., Liani-Leibson, K., Chabosseau, P., Kadir, R., Volodarsky, M., Halperin, D., Barber-Zucker, S., Shalev, H., Schreiber, R., Gradstein, L., Gurevich, E., Zarivach, R., Rutter, G. A., Landau, D., & Birk, O. S.
Affiliations
  • Ben-Gurion University of the Negev (IL)
  • Imperial College London (GB)
Corresponding author
Birk, Ohad S.
Venue
Brain
Published
2017-02-09
Volume
140
Issue
4
Pages
928-939
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
OpenAlex
W2603980184
Cited by
99
References
37
Citations by year
2026: 10 · 2025: 10 · 2024: 11 · 2023: 11 · 2022: 14 · 2021: 11 · 2020: 10 · 2019: 6 · 2018: 9 · 2017: 7
FWCI
7.28
Type
journal article
Language
en
Open access
Locations
  • Brain (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Spiral (Imperial College London) (submittedVersion, other-oa)
Funders
  • Wellcome Trust (WT098424AIA)
  • Diabetes UK (BDA15/0005275)
  • Ministry of Science, Technology and Space
  • Israel Science Foundation (761676, 1814/13, 1798/16)
  • Directorate for Biological Sciences
  • Medical Research Council (MR/K001981/1, MR/J0003042/1)
  • Biotechnology and Biological Sciences Research Council (BB/J015873/1)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Life Sciences › Neuroscience › Neurology › Neurological diseases and metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
Keywords
autosomal recessive disorder, consanguinity, Bedouin, zinc transporters, Wnt signaling, interstitial nephritis, intellectual disability, ataxia, oculomotor apraxia, endoplasmic reticulum localization, protein modeling, linkage analysis
MeSH terms
Chromosome Mapping, Consanguinity, Cytosol, Female, Homeostasis, Humans, Infant, Kidney Diseases, Male, Intellectual Disability, Mutation, Nuclear Proteins, Pedigree, Syndrome, Transcription Factors, Zinc, Hereditary Sensory and Motor Neuropathy, Age of Onset, Cell Cycle Proteins, Arabs, Cation Transport Proteins, Genome-Wide Association Study, HEK293 Cells, Wnt Signaling Pathway

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