Naslov
Pleiotropic ZIP8 A391T implicates abnormal manganese homeostasis in complex human disease

Autori
Sunuwar, Laxmi ; Frkatović, Azra ; Sharapov, Sodbo ; Wang, Qinchuan ; Neu, Heather M. ; Wu, Xinqun ; Haritunians, Talin ; Wan, Fengyi ; Michel, Sarah ; Wu, Shaoguang ; Donowitz, Mark ; McGovern, Dermot ; Lauc, Gordan ; Sears, Cynthia ; Melia, Joanna

Izvornik
JCI Insight (2379-3708) 5 (2020), 20; E140978, 12

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, ostalo

Ključne riječi
ibd ; plasma glycans ; ZIP8

Sažetak
ZIP8 is a metal transporter with a role in manganese (Mn) homeostasis. A common genetic variant in ZIP8 (rs13107325 ; A391T) ranks in the top 10 of pleiotropic SNPs identified in GWAS ; A391T has associations with an increased risk of schizophrenia, obesity, Crohn’s disease, and reduced blood Mn. Here, we used CRISPR/Cas9-mediated knockin (KI) to generate a mouse model of ZIP8 A391T (Zip8 393T-KI mice). Recapitulating the SNP association with blood Mn, blood Mn was reduced in Zip8 393T-KI mice. There was restricted abnormal tissue Mn homeostasis, with decreases in liver and kidney Mn and a reciprocal increase in biliary Mn, providing in vivo evidence of hypomorphic Zip8 function. Upon challenge in a chemically induced colitis model, male Zip8 393T-KI mice exhibited enhanced disease susceptibility. ZIP8 391-Thr associated with reduced triantennary plasma N-glycan species in a population-based cohort to define a genotype- specific glycophenotype hypothesized to be linked to Mn- dependent glycosyltransferase activity. This glycophenotype was maintained in a cohort of patients with Crohn’s disease. These data and the pleiotropic disease associations with ZIP8 391-Thr suggest underappreciated roles of Mn homeostasis in complex human disease.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Kliničke medicinske znanosti

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