Paul Schmidt's work seeks to understand the underlying pathophysiology of hereditary hemochromatosis, sideroblastic anemia and dysregulated iron metabolism through the use of multiple model systems. More recently he has sought to investigate the role of the ubiquitin-proteasome system (UPS) in modifying the erythroid proteome during terminal erythropoiesis
Research Background
Paul Schmidt earned his PhD in Environmental Health Sciences in the Biochemical/Molecular Toxicology track at Johns Hopkins University School of Public Health in 2001. There he studied the role of copper protein chaperones in a yeast model system. He completed post-doctoral research fellowships in the laboratories of Dr. Nancy Andrews and Dr. Mark Fleming at Boston Children's Hospital employing cell culture and rodent models to study various human iron metabolism diseases.
Murine models of erythroid 5ALA synthesis disorders and their conditional synthetic lethal dependency on pyridoxine. Blood. 2024 09 26; 144(13):1418-1432. View Abstract
Global loss of Tfr2 with concomitant induced iron deficiency greatly ameliorates the phenotype of a murine thalassemia intermedia model. Am J Hematol. 2021 02 01; 96(2):251-257. View Abstract
Mutations in the iron-sulfur cluster biogenesis protein HSCB cause congenital sideroblastic anemia. J Clin Invest. 2020 10 01; 130(10):5245-5256. View Abstract
The role of iron in mediating testosterone's effects on erythropoiesis in mice. FASEB J. 2020 09; 34(9):11672-11684. View Abstract
Mild iron deficiency does not ameliorate the phenotype of a murine erythropoietic protoporphyria model. Am J Hematol. 2020 05; 95(5):492-496. View Abstract
The Human-Specific BOLA2 Duplication Modifies Iron Homeostasis and Anemia Predisposition in Chromosome 16p11.2 Autism Individuals. Am J Hum Genet. 2019 11 07; 105(5):947-958. View Abstract
Hepcidin is not essential for mediating testosterone's effects on erythropoiesis. Andrology. 2020 01; 8(1):82-90. View Abstract
NCOA4 maintains murine erythropoiesis via cell autonomous and non-autonomous mechanisms. Haematologica. 2019 07; 104(7):1342-1354. View Abstract
RNAi-mediated reduction of hepatic Tmprss6 diminishes anemia and secondary iron overload in a splenectomized mouse model of ß-thalassemia intermedia. Am J Hematol. 2018 Jun; 93(6):745-750. View Abstract
UBE2O remodels the proteome during terminal erythroid differentiation. Science. 2017 08 04; 357(6350). View Abstract
Physiologic Expression of Sf3b1(K700E) Causes Impaired Erythropoiesis, Aberrant Splicing, and Sensitivity to Therapeutic Spliceosome Modulation. Cancer Cell. 2016 09 12; 30(3):404-417. View Abstract
A recurring mutation in the respiratory complex 1 protein NDUFB11 is responsible for a novel form of X-linked sideroblastic anemia. Blood. 2016 10 13; 128(15):1913-1917. View Abstract
Pseudouridine synthase 1 deficient mice, a model for Mitochondrial Myopathy with Sideroblastic Anemia, exhibit muscle morphology and physiology alterations. Sci Rep. 2016 05 20; 6:26202. View Abstract
Effects of Testosterone on Erythropoiesis in a Female Mouse Model of Anemia of Inflammation. Endocrinology. 2016 07; 157(7):2937-46. View Abstract
Differing impact of the deletion of hemochromatosis-associated molecules HFE and transferrin receptor-2 on the iron phenotype of mice lacking bone morphogenetic protein 6 or hemojuvelin. Hepatology. 2016 Jan; 63(1):126-37. View Abstract
Congenital sideroblastic anemia due to mutations in the mitochondrial HSP70 homologue HSPA9. Blood. 2015 Dec 17; 126(25):2734-8. View Abstract
Regulation of Iron Metabolism by Hepcidin under Conditions of Inflammation. J Biol Chem. 2015 Jul 31; 290(31):18975-83. View Abstract
Combination therapy with a Tmprss6 RNAi-therapeutic and the oral iron chelator deferiprone additively diminishes secondary iron overload in a mouse model of ß-thalassemia intermedia. Am J Hematol. 2015 Apr; 90(4):310-3. View Abstract
A competitive enzyme-linked immunosorbent assay specific for murine hepcidin-1: correlation with hepatic mRNA expression in established and novel models of dysregulated iron homeostasis. Haematologica. 2015 Feb; 100(2):167-77. View Abstract
HFE interacts with the BMP type I receptor ALK3 to regulate hepcidin expression. Blood. 2014 Aug 21; 124(8):1335-43. View Abstract
Modulation of hepcidin as therapy for primary and secondary iron overload disorders: preclinical models and approaches. Hematol Oncol Clin North Am. 2014 Apr; 28(2):387-401. View Abstract
Encyclopedia of Inorganic and Bioinorganic Chemistry, edited by R.A. Scott. Iron: Molecular basis of hemochromatosis. 2013; 1-12. View Abstract
X-linked sideroblastic anemia due to ALAS2 intron 1 enhancer element GATA-binding site mutations. Am J Hematol. 2014 Mar; 89(3):315-9. View Abstract
HRG1 is essential for heme transport from the phagolysosome of macrophages during erythrophagocytosis. Cell Metab. 2013 Feb 05; 17(2):261-70. View Abstract
The IRP1-HIF-2a axis coordinates iron and oxygen sensing with erythropoiesis and iron absorption. Cell Metab. 2013 Feb 05; 17(2):282-90. View Abstract
An RNAi therapeutic targeting Tmprss6 decreases iron overload in Hfe(-/-) mice and ameliorates anemia and iron overload in murine ß-thalassemia intermedia. Blood. 2013 Feb 14; 121(7):1200-8. View Abstract
Transgenic HFE-dependent induction of hepcidin in mice does not require transferrin receptor-2. Am J Hematol. 2012 Jun; 87(6):588-95. View Abstract
Murine mutants in the study of systemic iron metabolism and its disorders: an update on recent advances. Biochim Biophys Acta. 2012 Sep; 1823(9):1444-50. View Abstract
Hepcidin induction by transgenic overexpression of Hfe does not require the Hfe cytoplasmic tail, but does require hemojuvelin. Blood. 2010 Dec 16; 116(25):5679-87. View Abstract
BMP6 treatment compensates for the molecular defect and ameliorates hemochromatosis in Hfe knockout mice. Gastroenterology. 2010 Nov; 139(5):1721-9. View Abstract
Mutations in mitochondrial carrier family gene SLC25A38 cause nonsyndromic autosomal recessive congenital sideroblastic anemia. Nat Genet. 2009 Jun; 41(6):651-3. View Abstract
The transferrin receptor modulates Hfe-dependent regulation of hepcidin expression. Cell Metab. 2008 Mar; 7(3):205-14. View Abstract
Transferrin receptor 1 is a cellular receptor for New World haemorrhagic fever arenaviruses. Nature. 2007 Mar 01; 446(7131):92-6. View Abstract
Iron homeostasis. Annu Rev Physiol. 2007; 69:69-85. View Abstract