An essential role for the Zn 2+ transporter ZIP7 in B cell development

Consuelo Anzilotti, David J. Swan, Bertrand Boisson, Mukta Deobagkar-Lele, Catarina Oliveira, Pauline Chabosseau, Karin R. Engelhardt, Xijin Xu, Rui Chen, Luis Alvarez, Rolando Berlinguer-Palmini, Katherine R. Bull, Eleanor Cawthorne, Adam P. Cribbs, Tanya L. Crockford, Tarana Singh Dang, Amy Fearn, Emma J. Fenech, Sarah J. de Jong, B. Christoffer LagerholmCindy S. Ma, David Sims, Bert van den Berg, Yaobo Xu, Andrew J. Cant, Gary Kleiner, T. Ronan Leahy, M. Teresa de la Morena, Jennifer M. Puck, Ralph S. Shapiro, Mirjam van der Burg, J. Ross Chapman, John C. Christianson, Benjamin Davies, John A. McGrath, Stefan Przyborski, Mauro Santibanez Koref, Stuart G. Tangye, Andreas Werner, Guy A. Rutter, Sergi Padilla-Parra, Jean Laurent Casanova, Richard J. Cornall, Mary Ellen Conley, Sophie Hambleton

研究成果: Article同行評審

97 引文 斯高帕斯(Scopus)

摘要

Despite the known importance of zinc for human immunity, molecular insights into its roles have remained limited. Here we report a novel autosomal recessive disease characterized by absent B cells, agammaglobulinemia and early onset infections in five unrelated families. The immunodeficiency results from hypomorphic mutations of SLC39A7, which encodes the endoplasmic reticulum-to-cytoplasm zinc transporter ZIP7. Using CRISPR-Cas9 mutagenesis we have precisely modeled ZIP7 deficiency in mice. Homozygosity for a null allele caused embryonic death, but hypomorphic alleles reproduced the block in B cell development seen in patients. B cells from mutant mice exhibited a diminished concentration of cytoplasmic free zinc, increased phosphatase activity and decreased phosphorylation of signaling molecules downstream of the pre-B cell and B cell receptors. Our findings highlight a specific role for cytosolic Zn 2+ in modulating B cell receptor signal strength and positive selection.

原文English
頁(從 - 到)350-361
頁數12
期刊Nature Immunology
20
發行號3
DOIs
出版狀態Published - 2019 3月 1

All Science Journal Classification (ASJC) codes

  • 免疫學和過敏
  • 免疫學

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