2020
Functional characterization of a novel SLC40A1 Arg88Ile mutation in a kindred with familial iron overload treated by phlebotomy
Womack J, Sukumaran A, Li X, Lozovatsky L, Gallagher PG, Seid JE, Finberg KE. Functional characterization of a novel SLC40A1 Arg88Ile mutation in a kindred with familial iron overload treated by phlebotomy. Blood Cells Molecules And Diseases 2020, 87: 102532. PMID: 33385755, PMCID: PMC8272917, DOI: 10.1016/j.bcmd.2020.102532.Peer-Reviewed Original ResearchMeSH KeywordsCation Transport ProteinsHumansIron OverloadMaleMiddle AgedModels, MolecularPhlebotomyPoint Mutation
2018
Hb Adana (HBA2 or HBA1: c.179G > A) and alpha thalassemia: Genotype–phenotype correlation
Singh SA, Sarangi S, Appiah‐Kubi A, Hsu P, Smith WB, Gallagher PG, Glader B, Chui DHK. Hb Adana (HBA2 or HBA1: c.179G > A) and alpha thalassemia: Genotype–phenotype correlation. Pediatric Blood & Cancer 2018, 65: e27220. PMID: 29749692, DOI: 10.1002/pbc.27220.Peer-Reviewed Original Research
2008
Structural and functional effects of hereditary hemolytic anemia-associated point mutations in the alpha spectrin tetramer site
Gaetani M, Mootien S, Harper S, Gallagher PG, Speicher DW. Structural and functional effects of hereditary hemolytic anemia-associated point mutations in the alpha spectrin tetramer site. Blood 2008, 111: 5712-5720. PMID: 18218854, PMCID: PMC2424163, DOI: 10.1182/blood-2007-11-122457.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnemia, Hemolytic, CongenitalBinding SitesCalorimetry, Differential ScanningCircular DichroismEntropyErythrocytesGene ExpressionGenotypeHumansMolecular Sequence DataPhenotypePoint MutationProtein BindingRecombinant ProteinsSpectrinSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationStructure-Activity Relationship
2004
Mutation of a highly conserved isoleucine disrupts hydrophobic interactions in the αβ spectrin self-association binding site
Gallagher PG, Zhang Z, Morrow JS, Forget BG. Mutation of a highly conserved isoleucine disrupts hydrophobic interactions in the αβ spectrin self-association binding site. Laboratory Investigation 2004, 84: 229-234. PMID: 14661034, DOI: 10.1038/labinvest.3700029.Peer-Reviewed Original ResearchConceptsBinding sitesAlpha-spectrin mutationsEvolutionary conservationSpectrin functionSpectrin repeatsTriple helical modelAlpha-spectrinGenetic studiesHydrophobic isoleucineHydrophobic interactionsLow-expression alleleMolecular modelingExpression alleleSpectrinFunctional defectsTriple helixMutationsHelical modelIsoleucineErythrocyte membranesDrosophilaClinical phenotypeNeonatal hemolytic anemiaRepeatsHelix
2001
Dynamic molecular modeling of pathogenic mutations in the spectrin self-association domain
Zhang Z, Weed S, Gallagher P, Morrow J. Dynamic molecular modeling of pathogenic mutations in the spectrin self-association domain. Blood 2001, 98: 1645-1653. PMID: 11535493, DOI: 10.1182/blood.v98.6.1645.Peer-Reviewed Original ResearchConceptsSelf-association domainPoint mutationsHuman sequenceDrosophila alpha-spectrinDynamic molecular modelingHuman erythrocyte spectrinCytoskeletal functionSpecific point mutationsConservative substitutionsPrimary sequenceConformational rearrangementsAlpha-spectrinHelical regionHydrophilic residuesAmino acidsMutationsSpectrinSalt bridgeErythrocyte spectrinStructural consequencesPathogenic mutationsRepeat unitsMolecular modelingSequenceStructural disruption
1997
Amino‐acid substitution in α‐spectrin commonly coinherited with nondominant hereditary spherocytosis
Tse W, Gallagher P, Jenkins P, Wang Y, Benoit L, Speicher D, Winkelmann J, Agre P, Forget B, Marchesi S. Amino‐acid substitution in α‐spectrin commonly coinherited with nondominant hereditary spherocytosis. American Journal Of Hematology 1997, 54: 233-241. PMID: 9067503, DOI: 10.1002/(sici)1096-8652(199703)54:3<233::aid-ajh10>3.0.co;2-e.Peer-Reviewed Original ResearchMeSH KeywordsAllelesAmino AcidsFemaleGenes, RecessiveHumansMalePoint MutationPolymorphism, GeneticSpectrinSpherocytosis, HereditaryConceptsHereditary spherocytosisAlpha-spectrin geneNumber of patientsSevere hemolytic anemiaAmino acid substitutionsHemolytic anemiaPatientsPatterns of transmissionDifferent kindredsPolymorphic variantsAffected individualsErythrocyte spectrinGene defectsGenomic DNA analysisTrue homozygotesDisordersSpherocytosisSpectrin chainsGenomic DNAAlpha-spectrinKindredsLinkage disequilibriumΑ-spectrinAmino acidsDomain peptideMutation of a highly conserved residue of betaI spectrin associated with fatal and near-fatal neonatal hemolytic anemia.
Gallagher PG, Petruzzi MJ, Weed SA, Zhang Z, Marchesi SL, Mohandas N, Morrow JS, Forget BG. Mutation of a highly conserved residue of betaI spectrin associated with fatal and near-fatal neonatal hemolytic anemia. Journal Of Clinical Investigation 1997, 99: 267-277. PMID: 9005995, PMCID: PMC507794, DOI: 10.1172/jci119155.Peer-Reviewed Original ResearchMeSH KeywordsAnemia, Hemolytic, CongenitalArginineBase SequenceConserved SequenceErythrocyte MembraneFemaleHomozygoteHumansHydrops FetalisLaosLeucineMaleMembrane ProteinsModels, MolecularMuscle, SkeletalPedigreePeptide MappingPoint MutationPolymerase Chain ReactionProtein ConformationSequence Analysis, DNASpectrinConceptsImportance of leucineEvolutionary conservationSpectrin functionSpectrin repeatsBeta spectrinBetaI spectrinTriple helical modelGenetic studiesSpectrinMutationsSkeletal muscleMolecular modelingTriple helixNormal functionHelical modelLeucineErythrocyte membranesDrosophilaHydrophobic interactionsNeonatal hemolytic anemiaRepeatsHelixConservationResiduesMembraneMolecular basis of erythrocyte membrane disorders
Gallagher P, Ferriera J. Molecular basis of erythrocyte membrane disorders. Current Opinion In Hematology 1997, 4: 128-135. PMID: 9107530, DOI: 10.1097/00062752-199704020-00009.Peer-Reviewed Original Research
1996
Epidemiological studies of spectrin mutations related to hereditary elliptocytosis and spectrin polymorphisms in Benin
Glele‐Kakai C, Garbarz M, Lecomte M, Leborgne S, Galand C, Bournier O, Devaux I, Gautero H, Zohoun I, Gallagher P, Forget B, Dhermy D. Epidemiological studies of spectrin mutations related to hereditary elliptocytosis and spectrin polymorphisms in Benin. British Journal Of Haematology 1996, 95: 57-66. PMID: 8857939, DOI: 10.1046/j.1365-2141.1996.d01-1869.x.Peer-Reviewed Original ResearchConceptsHereditary elliptocytosisGenetic backgroundAlpha-spectrin geneSeparate genetic backgroundsNumber of polymorphismsErythrocyte alpha-spectrinGenetic basisProtein polymorphismsAfrican populationsAlpha-spectrinSpectrin mutationsMolecular defectsMutationsNovel mutationsPolymorphismEpidemiological studiesHE individualsElliptocytosisTwo-thirdsGenesSpectrinPopulationHigh frequencyThe lethal hemolytic mutation in beta I sigma 2 spectrin Providence yields a null phenotype in neonatal skeletal muscle.
Weed SA, Stabach PR, Oyer CE, Gallagher PG, Morrow JS. The lethal hemolytic mutation in beta I sigma 2 spectrin Providence yields a null phenotype in neonatal skeletal muscle. Laboratory Investigation 1996, 74: 1117-29. PMID: 8667615.Peer-Reviewed Original ResearchConceptsBeta ISpectrin skeletonSkeletal muscleMost such mutationsGene transferAdult mouse skeletal muscleDominant-negative fashionErythroid lineage cellsNeonatal skeletal muscleCultured muscle cellsAlpha beta heterodimersErythrocyte shape abnormalitiesMuscle cellsMouse skeletal muscleDefective proteinSpectrin geneAlternative transcriptsHemolytic phenotypeCDNA constructsNull phenotypeC2C12 myoblastsBeta heterodimerSpectrin mutationsSedimentation velocity analysisIntracellular distributionA nonsense mutation in the erythrocyte band 3 gene associated with decreased mRNA accumulation in a kindred with dominant hereditary spherocytosis.
Jenkins PB, Abou-Alfa GK, Dhermy D, Bursaux E, Féo C, Scarpa AL, Lux SE, Garbarz M, Forget BG, Gallagher PG. A nonsense mutation in the erythrocyte band 3 gene associated with decreased mRNA accumulation in a kindred with dominant hereditary spherocytosis. Journal Of Clinical Investigation 1996, 97: 373-380. PMID: 8567957, PMCID: PMC507027, DOI: 10.1172/jci118425.Peer-Reviewed Original ResearchConceptsBand 3 geneCytoplasmic domainNonsense mutationGenomic DNABand 3 cytoplasmic domainErythrocyte band 3 geneErythrocyte membrane mechanical stabilityEntire transmembrane domainBand 3Membrane mechanical stabilityBand 3 proteinTransmembrane domainNucleotide sequenceRT-PCRFamily membersStudy of erythrocytesMRNA accumulationSequence analysisAnion transport studiesBand 3 defectsTypical hereditary spherocytosisHS mutationsReticulocyte RNAUnaffected family membersRNA
1995
Recurrent fatal hydrops fetalis associated with a nucleotide substitution in the erythrocyte beta-spectrin gene.
Gallagher PG, Weed SA, Tse WT, Benoit L, Morrow JS, Marchesi SL, Mohandas N, Forget BG. Recurrent fatal hydrops fetalis associated with a nucleotide substitution in the erythrocyte beta-spectrin gene. Journal Of Clinical Investigation 1995, 95: 1174-1182. PMID: 7883966, PMCID: PMC441455, DOI: 10.1172/jci117766.Peer-Reviewed Original ResearchConceptsBeta-spectrin geneErythrocyte membrane mechanical stabilityPrincipal structural proteinMembrane mechanical stabilitySpectrin functionBeta spectrinErythrocyte membranesNucleotide substitutionsStudy of erythrocytesStructural proteinsAlpha-spectrinGenetic studiesMolecular defectsPoint mutationsSpectrinHydrops fetalisRecombinant peptideMutationsGenesSevere Coomb's negative hemolytic anemiaThird-trimester fetal loss