| 2005 |
Mouse SLC39A8 (ZIP8) was identified as the gene responsible for cadmium-induced testicular necrosis (Cdm locus); expression of ZIP8 in cultured mouse fetal fibroblasts caused >10-fold increase in intracellular Cd influx and accumulation and 30-fold increase in sensitivity to Cd-induced cell death. ZIP8 mRNA was localized to vascular endothelial cells of the testis in sensitive strains. |
Positional cloning, SNP haplotype analysis, retroviral overexpression in fibroblasts, in situ hybridization |
Proceedings of the National Academy of Sciences of the United States of America |
High |
15722412
|
| 2006 |
ZIP8 functions as a Mn2+/HCO3- symporter; cadmium uptake operated maximally at pH 7.5, was bicarbonate-dependent, inhibited by cyanide, and Mn2+ was the best competitive cation for Cd2+ uptake (Km for Cd2+ ~0.62 µM; Km for Mn2+ ~2.2 µM). ZIP8 was glycosylated and localized to the apical surface of polarized MDCK cells. |
Stable retroviral infection of mouse fetal fibroblasts, radioisotope uptake assays, Western blot, Z-stack confocal microscopy in polarized MDCK cells |
Molecular pharmacology |
High |
16638970
|
| 2007 |
ZIP8-mediated Cd2+ and Zn2+ transport in Xenopus oocytes is electroneutral, with two HCO3- anions transported per one Cd2+ or Zn2+ cation. Under Zn2+ depletion, ZIP8 traffics to the cell surface membrane; under Zn2+ homeostasis, ZIP8 is largely internalized. |
Xenopus oocyte cRNA injection with radioisotope uptake, electrogenicity studies, retroviral infection of MDCK cells with HA-tagged ZIP8, confocal microscopy |
Biochemical and biophysical research communications |
High |
18037372
|
| 2008 |
In human lung epithelial cells, ZIP8 (SLC39A8) mRNA is strongly induced by TNF-α (unlike other zinc transporters), and the resulting glycosylated ZIP8 protein translocates to the plasma membrane and mitochondria, increasing intracellular zinc content and protecting cells from TNF-α-induced cytotoxicity. siRNA knockdown of ZIP8 reduced cellular zinc content and impaired mitochondrial function, resulting in loss of cell viability. |
Quantitative RT-PCR of all human zinc transporters, siRNA knockdown, immunofluorescence/translocation assays, mitochondrial function assays, cell viability assays |
American journal of physiology. Lung cellular and molecular physiology |
High |
18390834
|
| 2008 |
Sp1 binding at the proximal promoter of ZIP8/SLC39A8 drives its transcription; elevated GSH levels suppress Sp1 expression, thereby down-regulating ZIP8 and reducing cadmium uptake, conferring cadmium resistance. |
Promoter analysis, Sp1 binding site mutagenesis, GSH manipulation via stable GCLC transfection, cadmium uptake assays, Western blot |
Molecular pharmacology |
Medium |
18556457
|
| 2009 |
ZIP8 localizes to the lysosome in T cells, and its abundance increases upon T cell activation. Loss of lysosomal labile zinc following activation (measured by flow cytometry) and ZIP8-mediated zinc transport from lysosomes inhibits calcineurin (CN) phosphatase activity, sustaining CREB phosphorylation and enhancing IFN-γ expression. ZIP8 siRNA knockdown reduced IFN-γ and perforin secretion; ZIP8 overexpression enhanced T cell activation. |
Confocal microscopy, siRNA knockdown, transient transfection overexpression, flow cytometry with zinc fluorophore, calcineurin phosphatase activity assay |
Journal of leukocyte biology |
Medium |
19401385
|
| 2009 |
Down-regulation of ZIP8 expression via DNA hypermethylation of the SLC39A8 CpG island is a mechanism of cadmium resistance in metallothionein-null cells. Treatment with the DNMT inhibitor 5-aza-deoxycytidine reversed methylation, restored ZIP8 expression, and re-sensitized cells to cadmium. |
DNA microarray, real-time PCR, Western blot, bisulfite sequencing/methylation analysis, DNMT inhibitor treatment, cadmium uptake and toxicity assays |
Toxicology and applied pharmacology |
Medium |
19699220
|
| 2012 |
ZIP8 transports Fe2+ and Zn2+ in HEK 293T cells and Xenopus oocytes (K0.5 ~0.7 µM for Fe2+); Fe2+ and Zn2+ mutually inhibit each other's uptake. ZIP8 also transports Cd2+, Co2+, Zn2+, and Mn2+ but not Cu. ZIP8 localizes to the plasma membrane and partially to early endosomes; iron loading increases total and cell-surface ZIP8 levels. Asparagine residues 40, 88, and 96 are glycosylated (site-directed mutagenesis), but N-glycosylation is not required for transport activity. ZIP8 knockdown in BeWo placental cells reduced iron uptake by ~40%. |
HEK 293T transfection with radioisotope uptake (59Fe, 65Zn, 109Cd, 57Co, 54Mn), Xenopus oocyte RNA injection, immunofluorescence, site-directed mutagenesis, siRNA knockdown in BeWo cells |
The Journal of biological chemistry |
High |
22898811
|
| 2012 |
ZIP8 is expressed on the apical membrane of renal proximal tubule cells (S3 segment) and mediates uptake of Cd2+ and Mn2+ from the apical side. siRNA knockdown of ZIP8 in proximal tubule cells significantly reduced apical uptake of both Cd2+ and Mn2+. |
siRNA knockdown, apical/basolateral compartment transport assays, in situ hybridization |
Metallomics : integrated biometal science |
Medium |
22534978
|
| 2012 |
ZIP8 hypomorphic (Slc39a8neo/neo) mice exhibit severely decreased ZIP8 expression and develop lethal anemia, hypoplastic spleen, dysorganogenesis, and impaired hematopoiesis. Diminished zinc and iron uptake was confirmed in fetal fibroblast and liver-derived cultures. The phenotype was rescued by introduction of BAC-transgenic extra copies of Slc39a8, proving the phenotype is due to ZIP8 deficiency. |
Mouse genetics (hypomorphic allele generation, BAC transgenic rescue), flow cytometry of fetal liver erythroid cells, hematological parameters, tissue zinc/iron measurement, cell culture uptake assays |
PloS one |
High |
22563477
|
| 2013 |
ZIP8 (SLC39A8) is a transcriptional target of NF-κB and functions as a negative feedback regulator of NF-κB signaling: ZIP8-mediated zinc influx inhibits IκB kinase (IKK) activity in vitro. Slc39a8 hypomorphic mouse fibroblasts showed dysregulated zinc uptake and increased NF-κB activation. |
NF-κB transcriptional target identification, IKK activity assay in vitro, Slc39a8 hypomorphic mouse fibroblasts, zinc uptake assays, NF-κB reporter assays |
Cell reports |
High |
23403290
|
| 2014 |
ZIP8 is specifically upregulated in osteoarthritis (OA) cartilage, mediating increased intracellular Zn2+ influx in chondrocytes, which activates the transcription factor MTF1 to drive expression of matrix-degrading enzymes (MMP3, MMP9, MMP12, MMP13, ADAMTS5). Ectopic ZIP8 expression in mouse cartilage caused OA-like destruction; Zip8 knockout suppressed surgically induced OA. The zinc-ZIP8-MTF1 axis was identified as a catabolic regulator of OA. |
Adenoviral ectopic expression in mouse cartilage, cartilage-specific Zip8 knockout, surgical OA induction, chondrocyte culture zinc measurements, MTF1 genetic manipulation in mice |
Cell |
High |
24529376
|
| 2015 |
Loss-of-function mutations in SLC39A8 cause severe manganese deficiency (undetectable blood Mn) leading to impaired activity of the Mn-dependent Golgi enzyme β-1,4-galactosyltransferase, resulting in defective protein glycosylation (type II CDG). Oral galactose supplementation normalized glycosylation. |
Whole-exome sequencing, transferrin glycosylation analysis (type II CDG diagnosis), blood Mn measurement, identification of two unrelated pedigrees with compound heterozygous SLC39A8 variants |
American journal of human genetics |
High |
26637979
|
| 2015 |
SLC39A8 deficiency in humans causes variably low blood Mn and Zn levels with elevated urinary excretion (renal wasting), establishing SLC39A8 as a Mn and Zn transporter critical for maintaining systemic homeostasis of both metals. The homozygous Gly38Arg variant arose independently in Hutterite and Egyptian families. |
Exome sequencing, blood/urine Mn and Zn quantification, haplotype analysis |
American journal of human genetics |
High |
26637978
|
| 2015 |
HIF-2α activates the zinc-ZIP8-MTF1 catabolic axis in chondrocytes by upregulating ZIP8 expression, increasing Zn2+ influx, and activating MTF1. Reciprocally, the zinc-ZIP8-MTF1 axis transcriptionally upregulates HIF-2α, creating a positive feedback loop that amplifies OA cartilage destruction. Cartilage-specific conditional knockout of ZIP8 abolished HIF-2α-induced enzyme expression. |
Microarray, adenoviral intra-articular injection, cartilage-specific conditional knockouts (Zip8fl/fl;Col2a1-Cre), chondrocyte primary culture assays |
Osteoarthritis and cartilage |
High |
26241779
|
| 2016 |
ZIP8-mediated transport of selenite (HSeO3-) requires bicarbonate and zinc; the transported complex is proposed to be Zn2+/(HCO3-)(HSeO3-). ZIP8 knockdown or transgenic overexpression in mice directly altered tissue selenium content, establishing ZIP8 as a selenite uptake transporter. |
shRNA knockdown in human/mouse cells, Xenopus oocyte cRNA injection, transgenic mouse lines with altered ZIP8 expression, tissue Se quantification |
Oncotarget |
High |
27166256
|
| 2016 |
The SLC39A8 missense variant A391T (rs13107325) reduces cadmium transport capacity; cells expressing ZIP8-Ala391 accumulated more intracellular cadmium than ZIP8-Thr391 cells, leading to increased ERK2 phosphorylation, NFκB activation, and reduced cell viability. |
HEK293 heterologous expression of ZIP8-Ala391 vs ZIP8-Thr391, cadmium accumulation measurement, phospho-ERK2 and NFκB assays, vascular endothelial cell genotyping experiments |
Human molecular genetics |
Medium |
27466201
|
| 2017 |
Hepatic ZIP8 is localized to the hepatocyte canalicular membrane where it reclaims Mn from bile; liver-specific ZIP8 knockout (ZIP8-LSKO) mice had markedly decreased Mn in multiple organs and increased bile Mn, while liver-specific overexpression (AAV-ZIP8) increased tissue Mn and decreased bile Mn. ZIP8-LSKO mice showed decreased activity of the Mn-dependent enzyme arginase and defective protein N-glycosylation. |
Liver-specific knockout mouse (Slc39a8-LSKO), inducible global knockout, AAV-mediated liver-specific overexpression, tissue Mn quantification, bile Mn measurement, arginase activity assay, N-glycosylation analysis |
The Journal of clinical investigation |
High |
28481222
|
| 2017 |
ZIP8 is transcriptionally induced in human macrophages by LPS via NF-κB; ZIP8 knockdown inhibited LPS-driven cellular zinc accumulation and prevented zinc-dependent reduction of IL-10 release. Zinc supplementation reduced nuclear localization and activity of C/EBPβ, a transcription factor driving IL-10 expression, in a ZIP8-dependent manner. |
siRNA knockdown of ZIP8 in human macrophages, zinc accumulation measurement, IL-10/TNFα/IL-6/IL-8 protein and mRNA assays, C/EBPβ nuclear localization assay |
PloS one |
Medium |
28056086
|
| 2018 |
Slc39a8 (ZIP8) is expressed by endothelial cells in the developing mouse heart and is required for cardiac ventricular compaction. Slc39a8-null hearts showed marked ECM accumulation and reduction of ADAMTS metalloproteinases. Mechanistically, SLC39A8 knockdown in HUVECs decreased ADAMTS1 transcription by reducing cellular Zn uptake and MTF1 transcriptional activity, placing ZIP8 upstream of the Zn/MTF1/ADAMTS axis in ECM remodeling. |
Slc39a8-null mouse embryo analysis, HUVEC siRNA knockdown, Zn uptake measurement, MTF1 transcriptional activity assay, ADAMTS1 mRNA quantification, histology/ECM staining |
The Journal of clinical investigation |
High |
29337306
|
| 2018 |
Disease-associated SLC39A8 mutations (CDG-associated variants) abolish Mn uptake activity and cause retention of ZIP8 protein in the ER rather than localization to the cell surface. These mutants reduce mitochondrial Mn levels and activity of MnSOD, increasing oxidative stress. Wild-type SLC39A8 restored normal mitochondrial function. |
54Mn uptake assays in transfected cells, immunofluorescence localization, MnSOD activity assay, oxidative stress measurement, loss-of-function by siRNA |
Scientific reports |
High |
29453449
|
| 2018 |
ZIP8 deficiency in hepatocytes leads to decreased hepatic selenium content, downregulation of selenoproteins GPX1 and GPX2, decreased antioxidant SOD1/SOD2, and increased oxidative stress, establishing ZIP8 as a hepatic selenium transporter required for redox homeostasis. |
Slc39a8+/neo hypomorphic mice and Ad-shZip8 acute liver knockdown, ICP-MS for tissue Se and Zn quantification, immunohistochemistry, Western blot for selenoproteins |
American journal of physiology. Gastrointestinal and liver physiology |
Medium |
29927321
|
| 2019 |
ZIP8 and ZIP14 together mediate NTBI (non-transferrin-bound iron) uptake in human proximal tubular epithelial cells; combined siRNA silencing of both ZIP8 and ZIP14 (but not either alone) significantly reduced 55Fe uptake. ZIP8 did not colocalize with early endosomes or mediate TBI-derived iron uptake (unlike ZIP14). |
siRNA knockdown of ZIP8 and/or ZIP14 in ciPTEC cells, 55Fe uptake assay, immunofluorescence colocalization with EEA1, fluorescent transferrin uptake |
Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine |
Medium |
30806852
|
| 2019 |
ZIP8 and ZIP14 support Mn2+ uptake in brain microvascular endothelial cells (BMVECs) at both apical and basal sides, enabling bidirectional Mn2+ flux across the blood-brain barrier. siRNA knockdown of ZIP8/ZIP14 reduced Mn uptake; kinetic analysis confirmed pH and bicarbonate dependence characteristic of ZIP8/ZIP14; LPS upregulated Mn uptake. Cell-surface biotinylation confirmed membrane presentation of both transporters. |
siRNA knockdown, 54Mn radioisotope uptake assay, kinetic analysis, surface protein biotinylation, LPS stimulation |
The Journal of biological chemistry |
Medium |
31699897
|
| 2019 |
ZIP8 mediates Mn uptake in primary skeletal myoblasts; ZIP8 knockdown severely impaired myoblast growth and led to cell death under differentiation conditions. ZIP8 knockdown reduced activity of Mn-dependent SOD2. Growth defects were rescued only by Mn supplementation, and reintroduction of wild-type ZIP8 rescued proliferation and differentiation phenotypes. |
siRNA knockdown in primary myoblasts, SOD2 activity assay, Mn supplementation rescue, ZIP8 re-expression rescue, differentiation assays |
Metallomics : integrated biometal science |
Medium |
31086870
|
| 2020 |
The Slc39a8 A391T knock-in mouse model exhibits Mn deficiency in the colon, impaired intestinal barrier function, disrupted epithelial glycocalyx, and increased sensitivity to epithelial injury and pathological colitis, mechanistically linking the variant to Crohn's disease risk through impaired intestinal Mn absorption and barrier integrity. |
CRISPR knock-in mouse (Slc39a8 A391T), colon Mn quantification, intestinal barrier function assays, glycocalyx analysis, dextran sulfate sodium-induced colitis model |
Proceedings of the National Academy of Sciences of the United States of America |
High |
33139556
|
| 2020 |
Human carriers of the common SLC39A8 A391T missense variant have reduced serum Mn specifically (among trace elements) and altered plasma protein N-glycome with reduced branching, consistent with reduced β-1,4-galactosyltransferase activity. Brain MRI showed dose-dependent signal changes in multiple regions. Mn supplementation in SLC39A8-CDG patients improved glycosylation branching. |
Trace element analysis, plasma N-glycome profiling (mass spectrometry), structural brain MRI analysis, Mn supplementation in CDG patients |
Scientific reports |
High |
32753748
|
| 2021 |
The ZIP8 A391T variant results in reduced zinc transport into cells, decreased NMDA- and AMPA-mediated spontaneous EPSCs, and reduced surface expression of GluN2A and GluA1/2/3 receptors in neurons. These phenotypes were rescued by re-expression of wild-type ZIP8 or application of the membrane-impermeable zinc chelator ZX1. ZIP8 reduction also decreased BBB integrity and increased NF-κB-dependent inflammation. |
Electrophysiological recordings in neurons, surface receptor expression assays, zinc chelator rescue (ZX1), wild-type ZIP8 re-expression rescue, BBB integrity assay, NF-κB signaling assay |
Translational psychiatry |
Medium |
33608496
|
| 2021 |
ZIP8 deficiency in CD4+ T cells abrogates collagen-induced arthritis by reducing Zn2+ influx in effector T cells and profoundly impairing TCR-mediated NF-κB and MAPK signaling, reducing Th17 cell differentiation. |
CD4+ T cell-specific ZIP8 knockout, collagen-induced arthritis model, Zn2+ flux measurement in effector T cells, NF-κB and MAPK signaling assays, Th17 differentiation assay |
Experimental & molecular medicine |
Medium |
33795795
|
| 2021 |
Myeloid-specific ZIP8 knockout mice showed increased NF-κB signaling, deficits in phagocytosis, increased cytokine production upon bacterial stimulation, and imbalanced Th17/Th2 responses leading to increased morbidity and mortality after S. pneumoniae infection. |
Myeloid-specific Zip8 conditional knockout mouse, S. pneumoniae lung infection model, phagocytosis assay, cytokine measurement, NF-κB signaling assay, T cell subset analysis |
Journal of immunology (Baltimore, Md. : 1950) |
Medium |
34380651
|
| 2022 |
ZIP8 deficiency in type 2 alveolar epithelial cells (AEC2s) impairs AEC2 progenitor renewal and promotes lung fibrosis in a SIRT1-dependent manner. Deletion of Zip8 in AEC2s in mice caused impaired self-renewal, increased bleomycin injury susceptibility, and spontaneous lung fibrosis. Replenishment of zinc and SIRT1 activation restored AEC2 renewal. |
AEC2-specific Zip8 knockout mice, bleomycin injury model, AEC2 self-renewal and differentiation assays, SIRT1 activity assays, zinc replenishment experiments |
The Journal of clinical investigation |
High |
35389887
|
| 2022 |
The A391T variant of ZIP8 in a knock-in mouse model alters protein N-glycosylation in the brain, particularly in the cortex and cerebellum, affecting glycoproteins including cell adhesion molecules and neurotransmitter receptors relevant to schizophrenia. Changes reflected altered glycosyltransferase activity rather than gene expression changes. |
A391T knock-in mouse model, brain region-specific N-glycome profiling by mass spectrometry, RNAseq, glycoprotein identification |
Molecular psychiatry |
High |
35260802
|
| 2022 |
Cytoplasmic calcium regulates ZIP8 (and ZIP14) plasma membrane abundance in brain microvascular endothelial cells through SPCA1-dependent Golgi calcium homeostasis. SPCA1 knockdown increased cytoplasmic Ca2+, which enhanced membrane-localized ZIP8 and increased 54Mn2+ uptake; SPCA1 overexpression decreased cytoplasmic Ca2+ and reduced manganese transport. |
SPCA1 RNAi knockdown and overexpression, surface protein biotinylation, indirect immunofluorescence, GFP-tagged protein imaging, 54Mn2+ uptake assay, Ca2+ chelation experiments |
The Journal of biological chemistry |
Medium |
35787370
|
| 2022 |
Individual amino acid mutations in ZIP8 transmembrane domain 5 (TMD5) define its unique metal specificity: S335T and I340N mutations completely abolished Mn2+ and Cd2+ transport activity. The EEXXH metal-binding motif in TMD5 (distinct from the HEXXH motif in most ZIP transporters) is critical for ZIP8's unique affinity for Mn and Cd; replacing EEXXH with HEXXH abolished Mn and Cd transport. The A391T variant only slightly reduced transport activity. |
Site-directed mutagenesis, stable expression in DT40 cells, 54Mn and 109Cd radioisotope uptake assays |
Biochemical and biophysical research communications |
High |
35636252
|
| 2023 |
Systematic replacement of differentially conserved residues in ZIP8 identified a conditional selectivity filter operative only in the outward-facing conformation. A quadruple variant (Q180H/E343H/C310A/N357H) largely reduced Cd2+, Fe2+, and Mn2+ transport while increasing Zn2+ selectivity, revealing the molecular basis of substrate specificity in ZIP8. |
Rational mutagenesis, transport activity assays, molecular modeling, covariance analysis, computational studies |
Communications biology |
High |
37495662
|
| 2024 |
SLC39A8 is localized to the apical membrane of intestinal epithelial cells and mediates 54Mn uptake in intestinal organoid monolayer cultures. Slc39a8-IEC KO mice showed markedly decreased blood and organ Mn and impaired intestinal Mn absorption. Transcriptomic analysis identified alkaline ceramidase 1 (ACER1) as a downstream effector; ACER1 inhibition attenuated colitis in Slc39a8-IEC KO mice by remedying barrier dysfunction. |
Intestinal epithelial cell-specific Slc39a8 knockout mice, radiotracer 54Mn absorption studies, intestinal organoid monolayer 54Mn uptake, immunofluorescence localization, RNA-seq, ACER1 inhibitor treatment in colitis model |
Nature communications |
High |
38839750
|
| 2024 |
Slc39a8 neuron-specific knockout (Slc39a8-NSKO) mice displayed markedly decreased brain Mn levels and impaired brain 54Mn uptake by radiotracers, with cerebellar morphological defects including abnormal Purkinje cell dendritic arborization, reduced neurogenesis, increased apoptosis in the cerebellar external granular layer, and motor dysfunction. RNA-seq identified downregulation of cAMP signaling pathway genes; ZIP8 was required for optimal transcriptional response to cAMP-mediated signaling. |
Neuron-specific Slc39a8 conditional knockout, 54Mn radiotracer brain uptake, histology of cerebellum, Purkinje cell morphology analysis, neurogenesis and apoptosis assays, RNA-seq, cAMP signaling assays |
JCI insight |
High |
39435657
|
| 2021 |
TGF-β1 induces ZIP8 expression in vascular endothelial cells via the ALK5-Smad2/3 signaling pathway, with Smad3-mediated induction associated with p38 MAPK, thereby increasing intracellular cadmium accumulation and cytotoxicity. |
TGF-β1 treatment of vascular endothelial cells, ALK5 inhibition, Smad2/3 pathway analysis, p38 MAPK inhibition, cadmium accumulation and cytotoxicity assays, ZIP8 expression analysis |
International journal of molecular sciences |
Medium |
35008873
|
| 2021 |
Cadmium induces ZIP8 expression in vascular endothelial cells via both NF-κB and JNK signaling; JNK stabilizes NF-κB in the nucleus after cadmium-activated NF-κB nuclear translocation, resulting in ZIP8 induction that enhances cadmium cytotoxicity. |
NF-κB and JNK inhibitor experiments, ZIP8 overexpression in vascular endothelial cells, nuclear NF-κB localization assay, cadmium accumulation and cytotoxicity assays |
Toxicology and applied pharmacology |
Medium |
34822840
|
| 2018 |
ZIP8 overexpression induces morphological changes in fibroblasts with F-actin reorganization, increased proliferation and migration, and upregulation of NF-κB and Snail2 transcription factors (and their targets COL1A2 and E-cadherin). ZIP8 knockout in HAP1 cells increases cell-cell adhesion and also modulates NF-κB and Snail2. |
ZIP8 overexpression in MEF cells, ZIP8 knockout in HAP1 cells, BAC-transgenic ZIP8 mouse lungs, F-actin staining, migration/proliferation assays, NF-κB and Snail2 expression analysis |
Metallomics : integrated biometal science |
Medium |
29927450
|
| 2018 |
ZIP8 overexpression sensitizes mouse embryonic fibroblasts to cisplatin, while ZIP8 knockout in HAP1 leukemia cells confers cisplatin resistance. Cisplatin is not a direct ZIP8 substrate. ZIP8 regulates the anti-apoptotic protein Bcl-2: overexpression decreases Bcl-2 and increases cleaved Caspase-3, while loss of ZIP8 elevates Bcl-2. |
ZIP8 overexpression and knockout cell lines, cisplatin sensitivity assays, Bcl-2 and cleaved Caspase-3 Western blot, transgenic mouse tissue analysis |
Toxicology and applied pharmacology |
Medium |
30342059
|
| 2020 |
In human fibroblast-like synoviocytes, TNF-α and IL-1α treatment increases ZIP8 and ZIP14 expression via HIF-1α activation (blocked by echinomycin, an HIF-1α inhibitor), leading to increased basal intracellular Zn2+ concentration. ZIP8 functional expression in HEK cells increased basal [Zn2+]i, and elevated Zn2+ intrinsically activated the TRPA1 channel. |
Cytokine stimulation of synoviocytes, HIF-1α inhibitor (echinomycin), NF-κB P65 and HIF-1α overexpression, fluorescent Zn2+ indicators, TRPA1 activity measurements, ZIP8 expression in HEK cells |
International journal of molecular sciences |
Medium |
34198528
|
| 2024 |
SLC39A8 knockdown in aortic valve interstitial cells reduced intracellular Mn2+ concentration and decreased SOD2 expression and activity, exacerbating ferroptosis and osteogenic differentiation. Nesfatin-1 treatment elevated ZIP8 expression, increased Mn2+, and activated SOD2 to suppress ferroptosis. |
siRNA knockdown of ZIP8 in AVICs, Mn2+ concentration measurement, SOD2 activity assay, osteogenic differentiation assay, ferroptosis markers (GPX4, GSH) |
Free radical biology & medicine |
Medium |
38851518
|
| 2023 |
ZIP8 KO mice exhibited elevated spleen iron and decreased serum iron, indicating a role for ZIP8 in systemic iron recycling. ZIP8 is expressed on lung distal airspace epithelial cells and transports iron from the airway into lung tissue. LPS-induced inflammation upregulated ZIP8 expression in the lung, but ZIP8 deletion did not significantly worsen LPS-induced acute lung injury or Klebsiella pneumoniae infection outcomes. |
Global inducible ZIP8 KO mouse, iron quantification in tissues, LPS-induced acute lung injury model, Klebsiella pneumoniae infection model |
Blood advances |
Medium |
36260707
|