| 2002 |
ZnT7 is localized in the Golgi apparatus and cytoplasmic vesicles, and facilitates zinc transport from the cytoplasm into the Golgi apparatus; exposure of ZnT7-expressing CHO cells to zinc causes zinc accumulation in the Golgi apparatus. |
Immunofluorescence microscopy, zinc accumulation assay in transfected CHO cells, Western blot |
The Journal of biological chemistry |
High |
12446736
|
| 2004 |
ZnT7 (together with ZnT5) is required for loading zinc into alkaline phosphatases (ALPs) in the secretory pathway, converting apo-ALP to holo-ALP; double knockout of ZnT5 and ZnT7 in DT40 cells reduced ALP activity to <5% of wild-type, and re-expression of either ZnT5 or ZnT7 rescued activity. |
Gene disruption in DT40 cells, ALP activity assay, overexpression rescue experiment |
The Journal of biological chemistry |
High |
15525635
|
| 2007 |
Znt7-deficient mice are zinc-deficient (reduced zinc in serum, liver, bone, kidney, small intestine; ~50% cellular zinc in embryonic fibroblasts), show reduced dietary zinc absorption, and display reduced body fat accumulation; the growth defect cannot be corrected by dietary zinc supplementation. |
Gene-trap knockout mouse model, zinc content measurement in tissues and cells, radioactive zinc feeding study |
The Journal of biological chemistry |
High |
17954933
|
| 2009 |
ZnT7 is localized to the Golgi apparatus membrane in Purkinje cells, Bergmann glial cells, and granule cells of the mouse cerebellum, as confirmed by co-localization with the trans-Golgi marker TGN38 and immuno-electron microscopy. |
Immunofluorescence confocal microscopy, immuno-electron microscopy, Western blot |
Histology and histopathology |
Medium |
19283665
|
| 2009 |
ZnT7 is localized to the Golgi apparatus in spermatocytes, spermatids, Sertoli cells, and Leydig cells of the mouse testis, co-localizing with the trans-Golgi marker TGN38; ZnT7 and chelatable zinc are distributed in different cell populations in the testis. |
Immunohistochemistry, double immunofluorescence with TGN38, zinc autometallographic staining |
Histology and histopathology |
Medium |
19012241
|
| 2010 |
Overexpression of ZnT7 in RIN5mF pancreatic beta-cells increases insulin mRNA expression, insulin protein synthesis, and total cellular insulin content; this effect is mediated through metal-responsive transcription factor Mtf1 binding to metal-responsive elements (MREs) in the Ins1 and Ins2 gene promoters. |
Overexpression in RIN5mF cells, quantitative RT-PCR, 35S metabolic labeling, promoter MRE identification, Mtf1 binding assay |
Experimental cell research |
Medium |
20599947
|
| 2011 |
Znt7-null mutation in a TRAMP prostate cancer mouse model accelerates prostate tumor formation, increases frequency of high-grade PIN, promotes metastasis to lymph nodes, and reduces apoptosis in the prostate. |
TRAMP/Znt7-/- transgenic mouse model, histopathological analysis, apoptosis measurement |
Cancer letters |
Medium |
21621325
|
| 2012 |
ZnT7 in skeletal muscle supports insulin signaling; Znt7-KO mice fed a high-fat diet develop glucose intolerance and insulin resistance associated with down-regulated Insr, Irs2, and Akt1 mRNA in skeletal muscle; overexpression of ZnT7 in L6 skeletal muscle cells increased Irs2 mRNA, Irs2 and Akt phosphorylation, and glucose uptake. |
Znt7-KO mouse model, high-fat diet challenge, oral glucose tolerance test, insulin tolerance test, overexpression in L6 cells, quantitative RT-PCR, Western blot, glucose uptake assay |
The Journal of biological chemistry |
High |
22854958
|
| 2013 |
ZnT7 overexpression protects MC3T3-E1 osteoblasts from H2O2-induced apoptosis by reducing intracellular free zinc accumulation; this protective effect is mediated through activation of PI3K/Akt and MAPK/ERK signaling pathways; ZnT7 siRNA knockdown exacerbates apoptosis. |
Overexpression and siRNA knockdown in MC3T3-E1 cells, H2O2 treatment, apoptosis assay, Western blot for pathway activation |
Cellular signalling |
Medium |
23403124
|
| 2016 |
Combined deletion of Slc30a7 (ZnT7) and Slc30a8 (ZnT8) in mice abolishes glucose-stimulated insulin secretion (GSIS) in isolated islets, whereas deletion of either gene alone has no effect on GSIS in isolated islets; Slc30a7 deletion alone impairs glucose tolerance in vivo, reduces glucose-stimulated plasma insulin, pancreatic insulin content, hepatic glycogen, and alters islet morphology increasing the α- to β-cell ratio. |
Single and double knockout mice, oral glucose tolerance test, GSIS in isolated islets, pancreatic insulin content measurement, islet morphology analysis |
Endocrinology |
High |
27754787
|
| 2017 |
ZnT7 is localized to the sarco(endo)plasmic reticulum (S(E)R) in cardiomyocytes; under hyperglycemia, decreased ZnT7 expression combined with increased ZIP7 activity causes redistribution of free Zn2+ (increased cytosolic, decreased S(E)R Zn2+) and contributes to ER stress and cardiac dysfunction. |
Subcellular fractionation, S(E)R isolation, FRET-based Zn2+ sensors, siRNA silencing of CK2α, Western blot |
Diabetes |
Medium |
28232492
|
| 2017 |
ZNT7 physically interacts with CD40 in B lymphocytes (demonstrated by immunoprecipitation); ZNT7 knockdown reduces CD40 cell surface expression and impairs CD154-CD40-mediated p38 MAPK phosphorylation; ZNT7 overexpression up-regulates this signaling. |
Immunoprecipitation, flow cytometry for CD40 surface expression, Western blot for p38 MAPK phosphorylation, siRNA knockdown and overexpression |
FEBS open bio |
Medium |
28469980
|
| 2018 |
ZnT7 is also localized to mitochondria (mitochondrial matrix) in cardiomyocytes in addition to the S(E)R; under hyperglycemia, increased ZnT7 on mitochondria is associated with elevated mitochondrial free Zn2+, increased ROS, depolarized mitochondrial membrane potential, and altered S(E)R-mitochondria coupling protein expression. |
Fluorescence microscopy, mitochondrial fractionation, biochemical analysis, FRET Zn2+ sensors |
Mitochondrion |
Medium |
29307859
|
| 2018 |
ZnT7 protects renal tubular epithelial cells (NRK-52E) from high glucose-induced epithelial-to-mesenchymal transition (EMT); ZnT7 knockdown enhances EMT and activates MAPK/ERK and TGF-β/Smad pathways; ZnT7 overexpression inhibits these effects. |
Overexpression and siRNA knockdown in NRK-52E cells, Western blot for EMT markers and pathway activation, dual-fluorescent localization |
Kidney & blood pressure research |
Medium |
29627824
|
| 2018 |
In znt7-KO skeletal muscle, insulin resistance is mechanistically linked to increased intracellular fatty acid levels, intracellular lipid accumulation, and elevated production of bioactive lipid mediators (12,13-DiHOME and 12-HETE); this is accompanied by up-regulation of Fabp3, Cd36, Slc27a1, and Slc27a4 fatty acid transporters and increased fatty acid oxidative capacity with enlarged mitochondria. |
znt7-KO mice, fatty acid and oxylipin profiling, electron microscopy, immunohistochemistry, quantitative RT-PCR, Western blot |
The Journal of biological chemistry |
High |
29555680
|
| 2020 |
SLC30A7 knockdown decreases intracellular free zinc levels and reduces zinc distribution in the Golgi apparatus; SLC30A7 has anti-apoptotic effects in high glucose-induced apoptosis in renal tubular cells via the NFE2L2/HMOX1 signaling pathway; knockdown of NFE2L2 decreases SLC30A7 activity and increases apoptosis. |
siRNA knockdown, real-time RT-PCR, Western blot, intracellular zinc measurement, STZ-induced diabetic mouse model |
Diabetes research and clinical practice |
Medium |
32949653
|
| 2021 |
In Drosophila, silencing of dZnT7 (the ZnT7 ortholog, localized on the Golgi apparatus) in a RafGOF scrib-/- tumor model enhances tumor growth, invasion, and migration; mechanistically, zinc deficiency in the Golgi caused by dZnT7 RNAi induces ER stress which activates JNK signaling via Atg9, promoting cell-autonomous and non-autonomous autophagy. |
Drosophila RNAi genetics, tumor growth/invasion assay, JNK pathway analysis, Atg9 epistasis |
Oncogene |
Medium |
33649534
|
| 2022 |
miR-200c-3p directly targets SLC30A7 in human retinal microvascular endothelial cells (validated by dual luciferase reporter); miR-200c-3p negatively regulates SLC30A7 expression, and its knockdown mitigates high glucose-induced pyroptosis. |
Dual luciferase reporter assay, RT-qPCR, siRNA knockdown, Western blot, ELISA |
Human & experimental toxicology |
Medium |
35607288
|
| 2023 |
Cryo-EM structures of human ZnT7 at 2.2–3.1 Å resolution reveal: (1) ZnT7 functions as a homodimer with tight interactions in both cytosolic and transmembrane (TM) domains; (2) each protomer has a single Zn2+-binding site in the TM domain; (3) ZnT7 operates as a Zn2+/H+ antiporter undergoing TM-helix rearrangement between inward-facing (negatively charged cytosolic cavity for Zn2+ entry) and outward-facing (widened luminal cavity for Zn2+ release) conformations; (4) the exceptionally long cytosolic histidine-rich loop binds two Zn2+ ions, seemingly facilitating Zn2+ recruitment to the TM transport pathway. |
Cryo-EM structure determination (2.2–3.1 Å), Zn2+-bound and unbound forms |
Nature communications |
High |
37553324
|
| 2023 |
ZnT7 is localized on the mitochondrial matrix in cardiomyoblasts; ZnT7 overexpression increases mitochondrial free Zn2+ ([Zn2+]Mit), elevates ROS production, depolarizes mitochondrial membrane potential, increases markers of mitochondria-associated apoptosis and autophagy, and alters histone methylation marks (H3K27me3 and H3K36me1), linking ZnT7-mediated Zn2+ buffering to epigenetic regulation. |
Confocal immunofluorescence, FRET-based Zn2+/Ca2+ sensors, ROS measurement, mitochondrial membrane potential assay, Western blot for histone modifications |
Journal of trace elements in medicine and biology |
Medium |
37196548
|
| 2023 |
Compound heterozygous loss-of-function variants in SLC30A7 (c.21dup causing premature stop, and c.842+15T>C causing leaky splicing with premature stop) result in 80–96% reduction in ZnT7 protein in affected individuals with stunted growth, testicular hypoplasia, and bone marrow failure (Ziegler-Huang Syndrome/BMF8). |
Exome sequencing, RNA-seq splicing analysis, Western blot for protein expression in patient cells |
Human molecular genetics |
Medium |
36821639
|
| 2024 |
ZnT7 (as part of ZNT5-6 heterodimers and ZNT7 homodimers) supplies Zn2+ to Golgi α-mannosidase II (GMII), a key enzyme in N-glycan processing; loss of ZNT5-6 and ZNT7 function markedly reduces GMII activity and causes accumulation of hybrid-type N-glycans with reduction of complex-type glycans; lysosomal mannosidase (LAMAN) activity is not affected. |
Genetic disruption of ZNT5-6 and ZNT7 in cells, GMII enzyme activity assay, N-glycan profiling, xenograft tumor growth model |
The Journal of biological chemistry |
High |
38762179
|
| 2025 |
ZNT7 deficiency in patient-derived B-EBV lymphoblasts causes excessive TP53 expression and decreased AKT activation; overexpression of wild-type ZNT7 in patient fibroblasts rescues insulin-stimulated AKT pathway activation; ZNT7 is expressed in myeloid and lymphoid lineage cells in human bone marrow, and Znt7-KO mice develop progressive cytopenia. |
Western blot for TP53 and pAKT in patient cells, wild-type ZNT7 transduction rescue, fluorescence microscopy for lineage co-expression, hematological analysis of Znt7-KO mice |
Journal of trace elements in medicine and biology |
Medium |
40286389
|
| 2026 |
ERK1 specifically binds SLC30A7 and phosphorylates it at T297, driving redistribution of Zn2+ from cytosol into the Golgi lumen; SLC30A7 cooperates with zinc metallochaperone ZNG1 to mobilize Golgi zinc toward MMP2/3/9 activation, leading to E-cadherin degradation, β-catenin nuclear translocation, and MYC transcription in esophageal squamous cell carcinoma. |
Genetic deletion in mouse 4NQO tumorigenesis model, siRNA knockdown, ERK1 binding and phosphorylation assays (T297 site), co-IP for ZNG1 interaction, MMP activity assays, β-catenin pathway analysis, PDX model with ERK inhibitor nanoplatform |
Cancer letters |
Medium |
42190790
|