2023
The E3 ligase Riplet promotes RIG-I signaling independent of RIG-I oligomerization
Wang W, Götte B, Guo R, Pyle A. The E3 ligase Riplet promotes RIG-I signaling independent of RIG-I oligomerization. Nature Communications 2023, 14: 7308. PMID: 37951994, PMCID: PMC10640585, DOI: 10.1038/s41467-023-42982-0.Peer-Reviewed Original Research
2022
The RIG-I receptor adopts two different conformations for distinguishing host from viral RNA ligands
Wang W, Pyle AM. The RIG-I receptor adopts two different conformations for distinguishing host from viral RNA ligands. Molecular Cell 2022, 82: 4131-4144.e6. PMID: 36272408, PMCID: PMC9707737, DOI: 10.1016/j.molcel.2022.09.029.Peer-Reviewed Original ResearchMeSH KeywordsCarrier ProteinsDEAD Box Protein 58DEAD-box RNA HelicasesImmunity, InnateLigandsRNA, Double-StrandedRNA, ViralConceptsRNA moleculesRNA ligandsHigh-resolution cryo-EM structuresCryo-EM structureDouble-stranded RNARIG-I receptorInduction of autoimmunityViral RNA moleculesAutoinhibited conformationInnate immune receptorsHost RNARelated RNAProtein foldsMolecular basisUnique molecular featuresHigh-affinity conformationAntiviral sensingHost cellsRNA virusesRNA releaseImmune receptorsRNAViral RNAExquisite selectivityMolecular features
2021
The molecular mechanism of RIG‐I activation and signaling
Thoresen D, Wang W, Galls D, Guo R, Xu L, Pyle AM. The molecular mechanism of RIG‐I activation and signaling. Immunological Reviews 2021, 304: 154-168. PMID: 34514601, PMCID: PMC9293153, DOI: 10.1111/imr.13022.Peer-Reviewed Original ResearchMeSH KeywordsDEAD-box RNA HelicasesImmunity, InnateInterferon-Induced Helicase, IFIH1RNA, Double-StrandedRNA, ViralSignal TransductionConceptsRIG-I activationTranscription of interferonEvolutionary implicationsAdapter proteinHost RNAPathogenic RNAsPattern recognition receptorsCell biologyInactive conformationMolecular mechanismsRNA virusesRole of RIGRNA duplexesInitial RNARNAStructural determinantsRecognition receptorsInnate immunityViral RNAInterferon expressionImportant receptorViral pathogensCellular spaceMolecular featuresReceptorsSingle-cell longitudinal analysis of SARS-CoV-2 infection in human airway epithelium identifies target cells, alterations in gene expression, and cell state changes
Ravindra NG, Alfajaro MM, Gasque V, Huston NC, Wan H, Szigeti-Buck K, Yasumoto Y, Greaney AM, Habet V, Chow RD, Chen JS, Wei J, Filler RB, Wang B, Wang G, Niklason LE, Montgomery RR, Eisenbarth SC, Chen S, Williams A, Iwasaki A, Horvath TL, Foxman EF, Pierce RW, Pyle AM, van Dijk D, Wilen CB. Single-cell longitudinal analysis of SARS-CoV-2 infection in human airway epithelium identifies target cells, alterations in gene expression, and cell state changes. PLOS Biology 2021, 19: e3001143. PMID: 33730024, PMCID: PMC8007021, DOI: 10.1371/journal.pbio.3001143.Peer-Reviewed Original ResearchConceptsSARS-CoV-2 infectionSARS-CoV-2Human bronchial epithelial cellsInterferon-stimulated genesCell state changesAcute respiratory syndrome coronavirus 2 infectionSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infectionSyndrome coronavirus 2 infectionCell tropismCoronavirus 2 infectionCoronavirus disease 2019Onset of infectionCell-intrinsic expressionCourse of infectionAir-liquid interface culturesHost-viral interactionsBronchial epithelial cellsSingle-cell RNA sequencingCell typesIL-1Disease 2019Human airwaysDevelopment of therapeuticsDrug AdministrationViral replication
2019
RIG-I Recognition of RNA Targets: The Influence of Terminal Base Pair Sequence and Overhangs on Affinity and Signaling
Ren X, Linehan MM, Iwasaki A, Pyle AM. RIG-I Recognition of RNA Targets: The Influence of Terminal Base Pair Sequence and Overhangs on Affinity and Signaling. Cell Reports 2019, 29: 3807-3815.e3. PMID: 31851914, DOI: 10.1016/j.celrep.2019.11.052.Peer-Reviewed Original ResearchConceptsRNA moleculesRIG-I activationBase pair sequenceHost RNA moleculesViral RNA moleculesRIG-I recognitionMolecular basisRNA variantsRNA targetsPair sequenceHuman cellsBase pairsImmune receptorsMechanisms of evasionTerminal base pairsLigand affinityWhole animalInterferon responseDeadly pathogenRNA therapeuticsMarburg virusCellsOverhangMoleculesSignaling