Mutations in the gene encoding PDGF-B cause brain calcifications in humans and mice.
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Keller A, Westenberger A, Sobrido MJ, Garcia-Murias M, Domingo A, Sears RL, Lemos RR, Ordonez-Ugalde A, Nicolas G, da Cunha JE, Rushing EJ, Hugelshofer M, Wurnig MC, Kaech A, Reimann R, Lohmann K, Dobricic V, Carracedo A, Petrovic I, Miyasaki JM, Abakumova I, Mae MA, Raschperger E, Zatz M, Zschiedrich K, Klepper J, Spiteri E, Prieto JM, Navas I, Preuss M, Dering C, Jankovic M, Paucar M, Svenningsson P, Saliminejad K, Khorshid HR, Novakovic I, Aguzzi A, Boss A, Le Ber I, Defer G, Hannequin D, Kostic VS, Campion D, Geschwind DH, Coppola G, Betsholtz C, Klein C, Oliveira JR
Mutations in the gene encoding PDGF-B cause brain calcifications in humans and mice.
Nat Genet. 2013 Sep;45(9):1077-82. doi: 10.1038/ng.2723. Epub 2013 Aug 4.
- PubMed ID
- 23913003 [ View in PubMed]
- Abstract
Calcifications in the basal ganglia are a common incidental finding and are sometimes inherited as an autosomal dominant trait (idiopathic basal ganglia calcification (IBGC)). Recently, mutations in the PDGFRB gene coding for the platelet-derived growth factor receptor beta (PDGF-Rbeta) were linked to IBGC. Here we identify six families of different ancestry with nonsense and missense mutations in the gene encoding PDGF-B, the main ligand for PDGF-Rbeta. We also show that mice carrying hypomorphic Pdgfb alleles develop brain calcifications that show age-related expansion. The occurrence of these calcium depositions depends on the loss of endothelial PDGF-B and correlates with the degree of pericyte and blood-brain barrier deficiency. Thus, our data present a clear link between Pdgfb mutations and brain calcifications in mice, as well as between PDGFB mutations and IBGC in humans.