Francisco Tome
Research Associate PharmacologyCards
About
Research
Publications
2023
Heparin is essential for optimal cell signaling by FGF21 and for regulation of βKlotho cellular stability
An S, Mohanty J, Tome F, Suzuki Y, Lax I, Schlessinger J. Heparin is essential for optimal cell signaling by FGF21 and for regulation of βKlotho cellular stability. Proceedings Of The National Academy Of Sciences Of The United States Of America 2023, 120: e2219128120. PMID: 36745784, PMCID: PMC9962926, DOI: 10.1073/pnas.2219128120.Peer-Reviewed Original ResearchConceptsHeparan sulfate proteoglycanCellular stabilityCell membraneSingle-molecule fluorescenceProtein kinase responsesChinese hamster ovary cellsFGF moleculesHamster ovary cellsFactor bindsReceptor assemblyReceptor dimerizationGrowth factor bindsHigh-affinity bindingFGF1 stimulationKinase responseCHO cellsOvary cellsSulfate proteoglycanIntracellular CaKlotho proteinFGFR1cPotential roleRegulationΒKlothoCells
2020
FGF23 contains two distinct high-affinity binding sites enabling bivalent interactions with α-Klotho
Suzuki Y, Kuzina E, An SJ, Tome F, Mohanty J, Li W, Lee S, Liu Y, Lax I, Schlessinger J. FGF23 contains two distinct high-affinity binding sites enabling bivalent interactions with α-Klotho. Proceedings Of The National Academy Of Sciences Of The United States Of America 2020, 117: 31800-31807. PMID: 33257569, PMCID: PMC7749347, DOI: 10.1073/pnas.2018554117.Peer-Reviewed Original ResearchMeSH KeywordsBinding SitesCalcinosisCell MembraneFibroblast Growth Factor-23Fibroblast Growth FactorsGlucuronidaseHEK293 CellsHumansHyperostosis, Cortical, CongenitalHyperphosphatemiaImmunoglobulin Fc FragmentsKlotho ProteinsMutationOsteomalaciaProtein BindingProtein DomainsProtein MultimerizationRecombinant Fusion ProteinsRickets, HypophosphatemicConceptsFGF receptorsTotal internal reflection fluorescence microscopyChimeric receptor moleculesReflection fluorescence microscopyBinding sitesDisulfide bridge formationCritical metabolic processesMAPK responseCytoplasmic domainGrowth factor familyTerminal tailFactor familyKinase activationSimilar binding affinitiesExtracellular domainFGFR1 activationTandem repeatsMetabolic processesDisulfide bridgesCell surfaceDistinct ligandsCell membraneFluorescence microscopyDistinct high-affinity binding sitesPhosphate homeostasis
2019
Structures of ligand-occupied β-Klotho complexes reveal a molecular mechanism underlying endocrine FGF specificity and activity
Kuzina ES, Ung PM, Mohanty J, Tome F, Choi J, Pardon E, Steyaert J, Lax I, Schlessinger A, Schlessinger J, Lee S. Structures of ligand-occupied β-Klotho complexes reveal a molecular mechanism underlying endocrine FGF specificity and activity. Proceedings Of The National Academy Of Sciences Of The United States Of America 2019, 116: 7819-7824. PMID: 30944224, PMCID: PMC6475419, DOI: 10.1073/pnas.1822055116.Peer-Reviewed Original ResearchConceptsFGF receptorsPleiotropic cellular responsesFibroblast growth factor (FGF) familyPrimary high-affinity receptorsKlotho proteinChimeric mutantsGrowth factor familyCatalytic subunitFGFR functionRegulatory interactionsTerminal tailPleiotropic cellular effectsFactor familyP motifS motifExtracellular domainMolecular mechanismsIntracellular signalingCellular responsesSame binding siteCellular effectsGeneral mechanismEndocrine FGFsBinary complexBinding sites
2018
Identification of a biologically active fragment of ALK and LTK-Ligand 2 (augmentor-α)
Reshetnyak AV, Mohanty J, Tomé F, Puleo DE, Plotnikov AN, Ahmed M, Kaur N, Poliakov A, Cinnaiyan AM, Lax I, Schlessinger J. Identification of a biologically active fragment of ALK and LTK-Ligand 2 (augmentor-α). Proceedings Of The National Academy Of Sciences Of The United States Of America 2018, 115: 8340-8345. PMID: 30061385, PMCID: PMC6099872, DOI: 10.1073/pnas.1807881115.Peer-Reviewed Original ResearchConceptsLeukocyte tyrosine kinaseN-terminal variable regionDeletion mutantsVariable regionsDisulfide bridgesDetailed biochemical characterizationIntramolecular disulfide bridgesNIH 3T3 cellsSimilar tyrosine phosphorylationAnaplastic lymphoma kinaseReceptor-receptor interactionsMAP kinase responseTyrosine phosphorylationBiochemical characterizationTyrosine kinaseReceptor tyrosineNeuronal differentiationL6 cellsPhysiological roleMode of actionKinase responseCultured cellsPC12 cellsStructures of β-klotho reveal a ‘zip code’-like mechanism for endocrine FGF signalling
Lee S, Choi J, Mohanty J, Sousa LP, Tome F, Pardon E, Steyaert J, Lemmon MA, Lax I, Schlessinger J. Structures of β-klotho reveal a ‘zip code’-like mechanism for endocrine FGF signalling. Nature 2018, 553: 501-505. PMID: 29342135, PMCID: PMC6594174, DOI: 10.1038/nature25010.Peer-Reviewed Original ResearchMeSH KeywordsBinding SitesCrystallography, X-RayExtracellular SpaceFibroblast Growth Factor-23Fibroblast Growth FactorsGlycoside HydrolasesHEK293 CellsHumansKlotho ProteinsLigandsMembrane ProteinsModels, MolecularProtein BindingProtein DomainsReceptors, Fibroblast Growth FactorSignal TransductionSubstrate Specificity
2016
Distinct cellular properties of oncogenic KIT receptor tyrosine kinase mutants enable alternative courses of cancer cell inhibition
Shi X, Sousa LP, Mandel-Bausch EM, Tome F, Reshetnyak AV, Hadari Y, Schlessinger J, Lax I. Distinct cellular properties of oncogenic KIT receptor tyrosine kinase mutants enable alternative courses of cancer cell inhibition. Proceedings Of The National Academy Of Sciences Of The United States Of America 2016, 113: e4784-e4793. PMID: 27482095, PMCID: PMC4995958, DOI: 10.1073/pnas.1610179113.Peer-Reviewed Original ResearchConceptsTyrosine kinase inhibitorsCombination of TKIsAnti-Kit antibodiesKIT mutantsPrecision medicine treatmentAntibody treatmentMedicine treatmentLow dosePrecision medicine effortsToxin conjugatesKIT inhibitorsActivating mutationsDistinct cellular propertiesReceptor tyrosine kinasesKinase inhibitorsCell inhibitionCancer cellsGenomic sequencing analysisCancer cell inhibitionMedicine effortsCancerTreatmentTyrosine kinaseSequencing analysisInhibitors
2015
Augmentor α and β (FAM150) are ligands of the receptor tyrosine kinases ALK and LTK: Hierarchy and specificity of ligand–receptor interactions
Reshetnyak AV, Murray PB, Shi X, Mo ES, Mohanty J, Tome F, Bai H, Gunel M, Lax I, Schlessinger J. Augmentor α and β (FAM150) are ligands of the receptor tyrosine kinases ALK and LTK: Hierarchy and specificity of ligand–receptor interactions. Proceedings Of The National Academy Of Sciences Of The United States Of America 2015, 112: 15862-15867. PMID: 26630010, PMCID: PMC4702955, DOI: 10.1073/pnas.1520099112.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnaplastic Lymphoma KinaseAnimalsCell LineCell Line, TumorCell ProliferationCytokinesDoxycyclineEnzyme ActivationHEK293 CellsHeparinHumansImmunoblottingLigandsMiceMolecular Sequence DataNIH 3T3 CellsProtein BindingReceptor Protein-Tyrosine KinasesSequence Homology, Amino AcidConceptsLeukocyte tyrosine kinaseReceptor tyrosine kinasesTyrosine kinaseIL-3-independent growthCritical cellular functionsBa/F3 cellsCell surface receptorsAnaplastic lymphoma kinaseLigand-receptor interactionsCellular functionsLigand bindingF3 cellsReceptor tyrosineProtein ligandsNIH/3T3 cellsKinaseSurface receptorsIndependent growthSubnanomolar potencyCellsDisease statesHigh affinityLymphoma kinaseFAM150ANovel cytokine
2014
The Strength and Cooperativity of KIT Ectodomain Contacts Determine Normal Ligand-Dependent Stimulation or Oncogenic Activation in Cancer
Reshetnyak AV, Opatowsky Y, Boggon TJ, Folta-Stogniew E, Tome F, Lax I, Schlessinger J. The Strength and Cooperativity of KIT Ectodomain Contacts Determine Normal Ligand-Dependent Stimulation or Oncogenic Activation in Cancer. Molecular Cell 2014, 57: 191-201. PMID: 25544564, PMCID: PMC4764128, DOI: 10.1016/j.molcel.2014.11.021.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBaculoviridaeBinding SitesCrystallography, X-RayEnzyme ActivationHumansLigandsMiceModels, MolecularMutationNeoplasmsNIH 3T3 CellsProtein BindingProtein FoldingProtein Interaction Domains and MotifsProtein MultimerizationProtein Structure, SecondaryProto-Oncogene Proteins c-kitRecombinant ProteinsSf9 CellsSpodopteraConceptsOncogenic KIT mutationsKIT mutationsGastrointestinal stromal tumorsAcute myeloid leukemiaKIT tyrosine kinase activitySomatic oncogenic mutationsInterstitial pacemaker cellsLigand-dependent stimulationReceptor tyrosine kinase KITStromal tumorsTyrosine kinase KITMyeloid leukemiaReceptor activationPacemaker cellsTyrosine kinase activityCancerKinase KITOncogenic mutationsHematopoietic cellsGerm cellsOncogenic activationActivationCellsReceptor moleculesMutationsStructure, domain organization, and different conformational states of stem cell factor-induced intact KIT dimers
Opatowsky Y, Lax I, Tomé F, Bleichert F, Unger VM, Schlessinger J. Structure, domain organization, and different conformational states of stem cell factor-induced intact KIT dimers. Proceedings Of The National Academy Of Sciences Of The United States Of America 2014, 111: 1772-1777. PMID: 24449920, PMCID: PMC3918759, DOI: 10.1073/pnas.1323254111.Peer-Reviewed Original ResearchConceptsExtracellular regionConformational statesIg-like domainsReceptor tyrosine kinasesDifferent conformational statesTrans autophosphorylationTyrosine kinase domainMembrane-proximal Ig-like domainsTrans phosphorylationAutophosphorylation sitesDomain organizationKinase domainCytoplasmic regionHomotypic interactionsKinase activityReceptor dimersDimeric receptorTyrosine kinaseAsymmetric arrangementMolecular interactionsPrevalent conformationsCrystal structureAutophosphorylationDimersKinase
2013
Structural basis for KIT receptor tyrosine kinase inhibition by antibodies targeting the D4 membrane-proximal region
Reshetnyak AV, Nelson B, Shi X, Boggon TJ, Pavlenco A, Mandel-Bausch EM, Tome F, Suzuki Y, Sidhu SS, Lax I, Schlessinger J. Structural basis for KIT receptor tyrosine kinase inhibition by antibodies targeting the D4 membrane-proximal region. Proceedings Of The National Academy Of Sciences Of The United States Of America 2013, 110: 17832-17837. PMID: 24127596, PMCID: PMC3816449, DOI: 10.1073/pnas.1317118110.Peer-Reviewed Original ResearchConceptsKIT antibodyReceptor tyrosine kinase inhibitionGastrointestinal stromal tumorsAcute myeloid leukemiaDurable disease controlTyrosine kinase inhibitorsTyrosine kinase inhibitionSomatic oncogenic mutationsUnique therapeutic approachClinical progressionStromal tumorsMyeloid leukemiaTherapeutic approachesDramatic responseTreatment of KITDrug resistanceDisease controlIsolated antibodyKIT inhibitionKinase inhibitorsAntibodiesCancerCell proliferationOncogenic mutationsKinase inhibition
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