2024
TLR8‐activating miR‐146a‐3p is an intermediate signal contributing to fetal membrane inflammation in response to bacterial LPS
Georges H, Cassin C, Tong M, Abrahams V. TLR8‐activating miR‐146a‐3p is an intermediate signal contributing to fetal membrane inflammation in response to bacterial LPS. Immunology 2024, 172: 577-587. PMID: 38631842, PMCID: PMC11223956, DOI: 10.1111/imm.13794.Peer-Reviewed Original ResearchMiR-146a-3pPreterm birthFetal membranesToll-like receptorsExpression of miR-146a-3pLipopolysaccharide exposureMouse model of pregnancyIL-8Response to bacterial LPSAssociated with chorioamnionitisFetal membrane inflammationHuman FM explantsMouse fetal membranesInduced preterm birthBacterial lipopolysaccharideMaternal-fetal interfaceDanger signalsWild-type miceIn vivo mouse modelModel of pregnancyInterleukin (IL)-8Pro-inflammatory roleResponse to bacterial lipopolysaccharideAssociated with elevated levelsResponse to LPS
2023
Decidualization dampens toll-like receptor mediated inflammatory responses in human endometrial stromal cells by upregulating IκBα
Tong M, Scott J, Whirledge S, Abrahams V. Decidualization dampens toll-like receptor mediated inflammatory responses in human endometrial stromal cells by upregulating IκBα. Journal Of Reproductive Immunology 2023, 159: 103988. PMID: 37451159, PMCID: PMC10530124, DOI: 10.1016/j.jri.2023.103988.Peer-Reviewed Original ResearchConceptsEndometrial stromal cellsInflammatory responseStromal cellsHuman endometrial stromal cellsToll-like receptor signalingSex hormone levelsMenstrual cycle stageToll-like receptorsImmune response changesViral double-stranded RNAHuman EnSCsEndometrial responseProinflammatory cytokinesSuccessful pregnancyMenstrual cycleHuman endometriumHormone levelsMajor cell typesImmune responseNFκB p65Viral infectionDecidualizationBacterial lipopolysaccharideReceptor signalingBacterial components
2022
Placental macrophage responses to viral and bacterial ligands and the influence of fetal sex
Pantazi P, Kaforou M, Tang Z, Abrahams V, McArdle A, Guller S, Holder B. Placental macrophage responses to viral and bacterial ligands and the influence of fetal sex. IScience 2022, 25: 105653. PMID: 36505933, PMCID: PMC9732417, DOI: 10.1016/j.isci.2022.105653.Peer-Reviewed Original ResearchPathogen-associated molecular patternsViral pathogen-associated molecular patternsHofbauer cellsFetal sexMajor histocompatibility complex class IAdverse pregnancy outcomesHistocompatibility complex class IToll-like receptorsComplex class ISex-dependent responseInfectious triggerPregnancy outcomesPlacental macrophagesVertical pathogen transmissionViral infectionLipid metabolismMacrophage responseBacterial ligandsProtein expression changesClass IMolecular patternsPlacentaMacrophagesCytoskeleton organizationQuantitative proteomics
2018
Antiphospholipid Antibodies Inhibit Trophoblast Toll‐Like Receptor and Inflammasome Negative Regulators
Mulla MJ, Weel IC, Potter JA, Gysler SM, Salmon JE, Peraçoli MTS, Rothlin CV, Chamley LW, Abrahams VM. Antiphospholipid Antibodies Inhibit Trophoblast Toll‐Like Receptor and Inflammasome Negative Regulators. Arthritis & Rheumatology 2018, 70: 891-902. PMID: 29342502, PMCID: PMC5984662, DOI: 10.1002/art.40416.Peer-Reviewed Original ResearchConceptsGrowth arrest-specific protein 6Quantitative reverse transcription polymerase chain reactionEnzyme-linked immunosorbent assayLigand growth arrest-specific protein 6TAM receptor functionTrophoblast inflammationAntiphospholipid antibodiesInflammasome functionReceptor functionToll-like receptor 4Human first-trimester trophoblastsTAM receptor signalingGlycoprotein I antibodiesInterleukin-8 responseRobust inflammatory responseToll-like receptorsEffects of aPLReverse transcription-polymerase chain reactionIL-1β responseIL-1β secretionFirst trimester trophoblastsTranscription-polymerase chain reactionAutophagy inducer rapamycinPlacental inflammationSubsequent TLR
2014
Single- and double-stranded viral RNA generate distinct cytokine and antiviral responses in human fetal membranes
Bakaysa SL, Potter JA, Hoang M, Han CS, Guller S, Norwitz ER, Abrahams VM. Single- and double-stranded viral RNA generate distinct cytokine and antiviral responses in human fetal membranes. Molecular Human Reproduction 2014, 20: 701-708. PMID: 24723465, PMCID: PMC4072183, DOI: 10.1093/molehr/gau028.Peer-Reviewed Original ResearchConceptsHuman fetal membranesToll-like receptorsMIP-1βMIP-1αFetal membranesAntiviral responseIL-1βIL-6IL-2Viral infectionG-CSFCytokine/chemokine profilesViral ssRNAAdverse pregnancy outcomesMaternal-fetal interfaceInfection-associated inflammationMCP-1 secretionViral dsRNA analogueTNF-α productionMIP-1α secretionTLR adapter proteinsExpression of IFNβPregnancy outcomesCytokine profileChemokine profilesHuman Fetal Membranes Generate Distinct Cytokine Profiles in Response to Bacterial Toll-Like Receptor and Nod-Like Receptor Agonists1
Hoang M, Potter JA, Gysler SM, Han CS, Guller S, Norwitz ER, Abrahams VM. Human Fetal Membranes Generate Distinct Cytokine Profiles in Response to Bacterial Toll-Like Receptor and Nod-Like Receptor Agonists1. Biology Of Reproduction 2014, 90: 39, 1-9. PMID: 24429216, PMCID: PMC4076407, DOI: 10.1095/biolreprod.113.115428.Peer-Reviewed Original ResearchConceptsBacterial toll-like receptorsToll-like receptorsPathogen-associated molecular patternsInnate immune pattern recognition receptorsNOD-like receptorsPattern recognition receptorsImmune pattern recognition receptorsCytokine profileIL1B secretionFetal membranesCpG ODNCaspase-1Subsequent preterm birthInflammatory cytokine profilePreterm premature ruptureDistinct cytokine profilesMaternal-fetal interfaceInfection-associated inflammationMild stimulatory effectNLR agonistsPreterm birthPremature ruptureProinflammatory cytokinesCytokine productionMCP-1
2012
Nod1, but not the ASC inflammasome, contributes to induction of IL-1β secretion in human trophoblasts after sensing of Chlamydia trachomatis
Kavathas PB, Boeras CM, Mulla MJ, Abrahams VM. Nod1, but not the ASC inflammasome, contributes to induction of IL-1β secretion in human trophoblasts after sensing of Chlamydia trachomatis. Mucosal Immunology 2012, 6: 235-243. PMID: 22763410, PMCID: PMC3465624, DOI: 10.1038/mi.2012.63.Peer-Reviewed Original ResearchMeSH KeywordsCARD Signaling Adaptor ProteinsCarrier ProteinsCell LineChlamydia trachomatisCytoskeletal ProteinsGene ExpressionHumansInflammasomesInterleukin-1betaMyeloid Differentiation Factor 88NLR Family, Pyrin Domain-Containing 3 ProteinNod1 Signaling Adaptor ProteinToll-Like Receptor 2Toll-Like Receptor 4TrophoblastsConceptsIL-1β secretionToll-like receptorsCT infectionIL-1βASC inflammasomeChlamydia trachomatisKey Toll-like receptorsNalp3/ASC inflammasomePro-inflammatory cytokinesIL-1β mRNAIL-1β productionInnate immune pathwaysNOD-like receptorsHuman trophoblast cellsIntracellular bacterial pathogenChlamydia infectionImmune pathwaysObligate intracellular bacterial pathogenTrophoblast cellsHuman trophoblastsCaspase-1InfectionSecretionInflammasomeNOD1
2006
Toll-Like Receptors and Pregnancy
Abrahams V, Mor G. Toll-Like Receptors and Pregnancy. Medical Intelligence Unit 2006, 15-25. DOI: 10.1007/0-387-34944-8_2.Peer-Reviewed Original ResearchMaternal-fetal interfaceToll-like receptorsCertain pregnancy complicationsInnate immune cellsInnate immune responseInnate immune systemAllogenic fetusIntrauterine infectionPregnancy complicationsTrophoblast responsesImmune cellsClinical studiesImmune responseImmune systemTrophoblast cellsHost defensePossible pathogensPregnancyStrong associationReceptorsCellsComplicationsPathogensTLRFetuses