2025
Heme promotes venetoclax resistance in multiple myeloma through MEK-ERK signaling and purine biosynthesis
Nair R, Vu A, Freer A, Bhatia K, Wang D, Savani M, Matulis S, Lonial S, Jaye D, Boise L, Seo S, Corson T, Nooka A, Bhatt S, McBrayer S, Gupta V, Hu X, Barwick B, Reddi A, Shanmugam M. Heme promotes venetoclax resistance in multiple myeloma through MEK-ERK signaling and purine biosynthesis. Blood 2025, 145: 732-747. PMID: 39693611, PMCID: PMC12060166, DOI: 10.1182/blood.2024025690.Peer-Reviewed Original ResearchConceptsElectron transport chainBcl-2Heme biosynthesisBCL-2 antagonismElectron transport chain activityIron-containing prosthetic groupMultiple myelomaB-cell lymphoma 2MEK-ERK signalingGene signatureActivation of prosurvivalApoptotic thresholdPurine biosynthesisPenultimate enzymePyrimidine biosynthesisMetabolic rewiringTransport chainProtein kinaseMultiple Myeloma Research Foundation CoMMpass studyBiosynthesisPurine synthesisGenetic profilePrimary MM cellsProsthetic groupProgression-free survival
2023
An intrinsic purine metabolite AICAR blocks lung tumour growth by targeting oncoprotein mucin 1
Aftab F, Rodriguez-Fuguet A, Silva L, Kobayashi I, Sun J, Politi K, Levantini E, Zhang W, Kobayashi S, Zhang W. An intrinsic purine metabolite AICAR blocks lung tumour growth by targeting oncoprotein mucin 1. British Journal Of Cancer 2023, 128: 1647-1664. PMID: 36810913, PMCID: PMC10133251, DOI: 10.1038/s41416-023-02196-z.Peer-Reviewed Original ResearchConceptsProtein-protein interactionsProximity ligation assayWhole transcriptomic profileEGFR inhibitorsMUC1-CTThermal stability assaysRNA sequencingTransgenic micePurine biosynthesisTranscriptomic profilesAICARTumor cell growthLigation assayMucin 1DNA damageCell growthMethodsCell viabilityLung tumor tissuesTumor formationCancer cellsEGFR-mutant lung cancerStability assaysJAKJAK1Dual immunofluorescence staining
2022
Combinatorial GxGxE CRISPR screen identifies SLC25A39 in mitochondrial glutathione transport linking iron homeostasis to OXPHOS
Shi X, Reinstadler B, Shah H, To TL, Byrne K, Summer L, Calvo SE, Goldberger O, Doench JG, Mootha VK, Shen H. Combinatorial GxGxE CRISPR screen identifies SLC25A39 in mitochondrial glutathione transport linking iron homeostasis to OXPHOS. Nature Communications 2022, 13: 2483. PMID: 35513392, PMCID: PMC9072411, DOI: 10.1038/s41467-022-30126-9.Peer-Reviewed Original ResearchConceptsDe novo purine biosynthesisMitochondrial iron uptakeStructure-guided mutagenesisNovo purine biosynthesisMetabolic stateMitochondrial glutathione transportGlutathione importGenetic interactionsGenetic perturbationsDifferent metabolic environmentsFitness defectsLack of substrateGene interactionsMitochondrial OXPHOSMitochondrial membranePurine biosynthesisCarrier familyTransport assaysKO cellsIron uptakeGlutathione transportTransport activityIron homeostasisGlutathione homeostasisGenes
1997
Pre-steady state kinetic analysis of the bifunctional human amino-imidazole carboxamide ribonucleotide formyltransferase/AMP cyclohydrolase (AICARFT/IMPCHase), a 10-formyltetrahydro-folate-requiring enzyme essential for de novo purine biosynthesis
Rayl E, Moroson B, Beardsley G, Anderson K. Pre-steady state kinetic analysis of the bifunctional human amino-imidazole carboxamide ribonucleotide formyltransferase/AMP cyclohydrolase (AICARFT/IMPCHase), a 10-formyltetrahydro-folate-requiring enzyme essential for de novo purine biosynthesis. Clinical Biochemistry 1997, 30: 275-276. DOI: 10.1016/s0009-9120(97)87769-7.Peer-Reviewed Original Research
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