TY - JOUR
T1 - Single amino acid charge switch defines clinically distinct proline-serine-threonine phosphatase-interacting protein 1 (PSTPIP1)-associated inflammatory diseases
AU - Holzinger, Dirk
AU - Fassl, Selina Kathleen
AU - de Jager, Wilco
AU - Lohse, Peter
AU - Röhrig, Ute F
AU - Gattorno, Marco
AU - Omenetti, Alessia
AU - Chiesa, Sabrina
AU - Schena, Francesca
AU - Austermann, Judith
AU - Vogl, Thomas
AU - Kuhns, Douglas B
AU - Holland, Steven M
AU - Rodríguez-Gallego, Carlos
AU - López-Almaraz, Ricardo
AU - Arostegui, Juan I
AU - Colino, Elena
AU - Roldan, Rosa
AU - Fessatou, Smaragdi
AU - Isidor, Bertrand
AU - Poignant, Sylvaine
AU - Ito, Koichi
AU - Epple, Hans-Joerg
AU - Bernstein, Jonathan A
AU - Jeng, Michael
AU - Frankovich, Jennifer
AU - Lionetti, Geraldina
AU - Church, Joseph A
AU - Ong, Peck Y
AU - LaPlant, Mona
AU - Abinun, Mario
AU - Skinner, Rod
AU - Bigley, Venetia
AU - Sachs, Ulrich J
AU - Hinze, Claas
AU - Hoppenreijs, Esther
AU - Ehrchen, Jan
AU - Foell, Dirk
AU - Chae, Jae Jin
AU - Ombrello, Amanda
AU - Aksentijevich, Ivona
AU - Sunderkoetter, Cord
AU - Roth, Johannes
N1 - Copyright © 2015 American Academy of Allergy, Asthma & Immunology. All rights reserved.
PY - 2015/11
Y1 - 2015/11
N2 - BACKGROUND: Hyperzincemia and hypercalprotectinemia (Hz/Hc) is a distinct autoinflammatory entity involving extremely high serum concentrations of the proinflammatory alarmin myeloid-related protein (MRP) 8/14 (S100A8/S100A9 and calprotectin).OBJECTIVE: We sought to characterize the genetic cause and clinical spectrum of Hz/Hc.METHODS: Proline-serine-threonine phosphatase-interacting protein 1 (PSTPIP1) gene sequencing was performed in 14 patients with Hz/Hc, and their clinical phenotype was compared with that of 11 patients with pyogenic arthritis, pyoderma gangrenosum, and acne (PAPA) syndrome. PSTPIP1-pyrin interactions were analyzed by means of immunoprecipitation and Western blotting. A structural model of the PSTPIP1 dimer was generated. Cytokine profiles were analyzed by using the multiplex immunoassay, and MRP8/14 serum concentrations were analyzed by using an ELISA.RESULTS: Thirteen patients were heterozygous for a missense mutation in the PSTPIP1 gene, resulting in a p.E250K mutation, and 1 carried a mutation resulting in p.E257K. Both mutations substantially alter the electrostatic potential of the PSTPIP1 dimer model in a region critical for protein-protein interaction. Patients with Hz/Hc have extremely high MRP8/14 concentrations (2045 ± 1300 μg/mL) compared with those with PAPA syndrome (116 ± 74 μg/mL) and have a distinct clinical phenotype. A specific cytokine profile is associated with Hz/Hc. Hz/Hc mutations altered protein binding of PSTPIP1, increasing interaction with pyrin through phosphorylation of PSTPIP1.CONCLUSION: Mutations resulting in charge reversal in the y-domain of PSTPIP1 (E→K) and increased interaction with pyrin cause a distinct autoinflammatory disorder defined by clinical and biochemical features not found in patients with PAPA syndrome, indicating a unique genotype-phenotype correlation for mutations in the PSTPIP1 gene. This is the first inborn autoinflammatory syndrome in which inflammation is driven by uncontrolled release of members of the alarmin family.
AB - BACKGROUND: Hyperzincemia and hypercalprotectinemia (Hz/Hc) is a distinct autoinflammatory entity involving extremely high serum concentrations of the proinflammatory alarmin myeloid-related protein (MRP) 8/14 (S100A8/S100A9 and calprotectin).OBJECTIVE: We sought to characterize the genetic cause and clinical spectrum of Hz/Hc.METHODS: Proline-serine-threonine phosphatase-interacting protein 1 (PSTPIP1) gene sequencing was performed in 14 patients with Hz/Hc, and their clinical phenotype was compared with that of 11 patients with pyogenic arthritis, pyoderma gangrenosum, and acne (PAPA) syndrome. PSTPIP1-pyrin interactions were analyzed by means of immunoprecipitation and Western blotting. A structural model of the PSTPIP1 dimer was generated. Cytokine profiles were analyzed by using the multiplex immunoassay, and MRP8/14 serum concentrations were analyzed by using an ELISA.RESULTS: Thirteen patients were heterozygous for a missense mutation in the PSTPIP1 gene, resulting in a p.E250K mutation, and 1 carried a mutation resulting in p.E257K. Both mutations substantially alter the electrostatic potential of the PSTPIP1 dimer model in a region critical for protein-protein interaction. Patients with Hz/Hc have extremely high MRP8/14 concentrations (2045 ± 1300 μg/mL) compared with those with PAPA syndrome (116 ± 74 μg/mL) and have a distinct clinical phenotype. A specific cytokine profile is associated with Hz/Hc. Hz/Hc mutations altered protein binding of PSTPIP1, increasing interaction with pyrin through phosphorylation of PSTPIP1.CONCLUSION: Mutations resulting in charge reversal in the y-domain of PSTPIP1 (E→K) and increased interaction with pyrin cause a distinct autoinflammatory disorder defined by clinical and biochemical features not found in patients with PAPA syndrome, indicating a unique genotype-phenotype correlation for mutations in the PSTPIP1 gene. This is the first inborn autoinflammatory syndrome in which inflammation is driven by uncontrolled release of members of the alarmin family.
KW - Hyperzincemia and hypercalprotectinemia
KW - myeloid-related protein 8/14
KW - calprotectin
KW - S100 proteins
KW - zinc
KW - proline-serine-threonine phosphatase-interacting protein 1
KW - pyogenic arthritis
KW - pyoderma gangrenosum, and acne syndrome
KW - genotype
KW - phenotype
KW - autoinflammation
U2 - 10.1016/j.jaci.2015.04.016
DO - 10.1016/j.jaci.2015.04.016
M3 - Article
C2 - 26025129
SN - 0091-6749
VL - 136
SP - 1337
EP - 1345
JO - Journal of Allergy and Clinical Immunology
JF - Journal of Allergy and Clinical Immunology
IS - 5
ER -