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Zinc transporter 8

From Wikipedia, the free encyclopedia

SLC30A8
Identifiers
AliasesSLC30A8, ZNT8, ZnT-8, solute carrier family 30 member 8
External IDsOMIM: 611145 MGI: 2442682 HomoloGene: 13795 GeneCards: SLC30A8
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001172811
NM_001172813
NM_001172814
NM_001172815
NM_173851

NM_172816

RefSeq (protein)

NP_001166282
NP_001166284
NP_001166285
NP_001166286
NP_776250

NP_766404

Location (UCSC)Chr 8: 116.95 – 117.18 MbChr 15: 52.16 – 52.2 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Zinc transporter 8 (ZNT8) is a protein that in humans is encoded by the SLC30A8 gene.[5] ZNT8 is a zinc transporter related to insulin secretion in humans. In particular, ZNT8 is critical for the accumulation of zinc into beta cell secretory granules and the maintenance of stored insulin as tightly packaged hexamers. Certain alleles of the SLC30A8 gene may increase the risk for developing type 2 diabetes, but a loss-of-function mutation appears to greatly reduce the risk of diabetes.[6]

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Transcription

Clinical significance

Association with type 2 diabetes (T2D)

Twelve rare variants in SLC30A8 have been identified through the sequencing or genotyping of approximately 150,000 individuals from 5 different ancestry groups. SLC30A8 contains a common variant (p.Trp325Arg), which is associated with T2D risk and levels of glucose and proinsulin.[7][8][9] Individuals carrying protein-truncating variants collectively had 65% reduced risk of T2D. Additionally, non-diabetic individuals from Iceland harboring a frameshift variant p. Lys34Serfs*50 demonstrated reduced glucose levels.[6] Earlier functional studies of SLC30A8 suggested that reduced zinc transport increased T2D risk.[10][11] Conversely, loss-of-function mutations in humans indicate that SLC30A8 haploinsufficiency protects against T2D. Therefore, ZnT8 inhibition can serve as a therapeutic strategy in preventing T2D.[6]

See also

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000164756 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000022315 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ "Entrez Gene: SLC30A8 solute carrier family 30 (zinc transporter), member 8".
  6. ^ a b c Flannick, Jason; et al. (2014). "Loss-of-function mutations in SLC30A8 protect against type 2 diabetes". Nature Genetics. 46 (4): 357–363. doi:10.1038/ng.2915. PMC 4051628. PMID 24584071.
  7. ^ Dupis, J.; et al. (Feb 2010). "New genetic loci implicated in fasting glucose homeostasis and their impact on type 2 diabetes risk". Nature Genetics. 42 (2): 105–16. doi:10.1038/ng.520. PMC 3018764. PMID 20081858.
  8. ^ Strawbridge, R.J.; et al. (October 2011). "Genome-wide association identifies nine common variants associated with fasting proinsulin levels and provides new insights into the pathophysiology of type 2 diabetes". Diabetes. 60 (10): 2624–34. doi:10.2337/db11-0415. PMC 3178302. PMID 21873549.
  9. ^ Morris, A.P.; et al. (Sep 2012). "Large-scale association analysis provides insights into the genetic architecture and pathophysiology of type 2 diabetes". Nature Genetics. 44 (9): 981–90. doi:10.1038/ng.2383. PMC 3442244. PMID 22885922.
  10. ^ Nicolson, T.J.; et al. (Sep 2009). "Insulin storage and glucose homeostasis in mice null for the granule zinc transporter ZnT8 and studies of the type 2 diabetes–associated variants". Diabetes. 58 (9): 2070–83. doi:10.2337/db09-0551. PMC 2731533. PMID 19542200.
  11. ^ Rutter, G.A.; et al. (2010). "Think zinc: new roles for zinc in the control of insulin secretion". Islets. 2 (1): 49–50. doi:10.4161/isl.2.1.10259. PMID 21099294.

Further reading

External links


This page was last edited on 26 November 2023, at 16:23
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